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SEA - LON

Find cheap flights from Seattle to London from C$ 448

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to London departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 25/5
Sat 1/6

Search hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to London.
In the last 7 days, travellers have searched 45,119,101 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to London (SEA-LON)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:50 p.m. - 11:45 a.m.SEA-LGW
11h 55m1 stop
1:00 p.m. - 5:55 p.m.LGW-SEA
12h 55m1 stop
C$ 857Icelandair
Find Deal
Sun, 6 Oct - Wed, 16 Oct
6:55 p.m. - 8:20 p.m.SEA-LHR
17h 25m1 stop
1:10 p.m. - 5:55 p.m.LHR-SEA
12h 45m1 stop
C$ 861Icelandair
Find Deal
Mon, 30 Sep - Thu, 10 Oct
11:15 a.m. - 10:00 a.m.SEA-LGW
14h 45m1 stop
12:00 p.m. - 10:20 p.m.LGW-SEA
18h 20m1 stop
C$ 864Virgin Atlantic
Find Deal
Tue, 1 Oct - Tue, 22 Oct
10:40 a.m. - 11:50 a.m.SEA-LHR
17h 10m2 stops
10:50 a.m. - 10:20 p.m.LHR-SEA
19h 30m2 stops
C$ 875Lufthansa
Find Deal
Tue, 8 Oct - Wed, 23 Oct
10:40 a.m. - 11:50 a.m.SEA-LHR
17h 10m2 stops
7:10 p.m. - 10:20 p.m.LHR-SEA
35h 10m2 stops
C$ 886Lufthansa
Find Deal
Sun, 13 Oct - Mon, 21 Oct
9:56 a.m. - 8:00 a.m.SEA-LHR
14h 04m1 stop
4:00 p.m. - 5:45 p.m.LHR-SEA
9h 45mdirect
C$ 899British Airways
Find Deal
Wed, 2 Oct - Wed, 16 Oct
11:15 a.m. - 10:00 a.m.SEA-LGW
14h 45m1 stop
12:00 p.m. - 10:20 p.m.LGW-SEA
18h 20m1 stop
C$ 932Virgin Atlantic
Find Deal
Wed, 25 Sep - Sat, 5 Oct
9:56 a.m. - 8:00 a.m.SEA-LHR
14h 04m1 stop
10:30 a.m. - 6:52 p.m.LHR-SEA
16h 22m1 stop
C$ 980Finnair
Find Deal
Fri, 4 Oct - Thu, 17 Oct
9:56 a.m. - 8:00 a.m.SEA-LHR
14h 04m1 stop
10:30 a.m. - 6:52 p.m.LHR-SEA
16h 22m1 stop
C$ 981Finnair
Find Deal
Fri, 4 Oct - Thu, 10 Oct
7:40 p.m. - 1:00 p.m.SEA-LHR
9h 20mdirect
9:50 a.m. - 11:35 a.m.LHR-SEA
9h 45mdirect
C$ 995British Airways
Find Deal
Sun, 29 Sep - Sat, 12 Oct

Flights from Seattle to London - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to London to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Seattle to London flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from Seattle to London.
Our data shows that the cheapest route for a one-way flight from Seattle to London cost C$ 648 and was between Seattle and London Heathrow Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is C$ 880.

What’s the cheapest day of the week to fly from Seattle to London?

The average price of all flights from Seattle to London clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to London on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Seattle to London. For your return ticket, we recommend flying on a Saturday and avoiding Wednesdays for the best deals.

What is the cheapest month to fly from Seattle to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to London, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to London is January, where tickets cost C$ 917 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is C$ 1,555 and C$ 1,496 respectively.

How far in advance should I book a flight from Seattle to London?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to London, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to London, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 58 days before departure.

Which airlines provide the cheapest flights from Seattle to London?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Seattle to London were found on Icelandair (C$ 857) and Virgin Atlantic (C$ 864). Icelandair proposed the cheapest one-way flight at C$ 487.

Which airlines fly most frequently between Seattle and London?

British Airways connects Seattle to London with up to 5 flights per day. Delta also offers 1 flight per day, while Virgin Atlantic follows with 1 flight per day.

Which airlines fly direct between Seattle and London?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to London.
There are 3 airlines that fly direct from Seattle to London. They are: British Airways, Delta and Virgin Atlantic. The cheapest price of all airlines flying this route was found with Virgin Atlantic at C$ 855. On average, the best prices for this route can be found at Delta.

How many flights are there between Seattle and London per day?

Each day, there are between 7 and 9 nonstop flights that take off from Seattle and land in London, with an average flight time of 9h 24m. The most common departure time is 7:00 p.m. and most flights take off in the evening, while the most flights land at London Heathrow Airport. Each week, there are 57 flights. The most frequent day of departure is Thursday, when 16% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Seattle and London?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Seattle to London take?

Direct flights take on average 9h 20m to travel the 12,406 km between Seattle and London.

What’s the earliest departure time from Seattle to London?

Early birds can take the earliest flight from Seattle at 1:30 pm and will be landing in London at 6:50 am.

What’s the latest departure time from Seattle to London?

If you prefer to fly at night, the latest flight from Seattle to London jets off at 9:10 pm and lands at 2:50 pm.

Good to know

Low season

January

High season

June

Cheapest flight

C$ 448
Best time to beat the crowds (23% less expensive on average)
Most popular time to fly (32% more expensive on average)
Flight from Seattle to London Gatwick Airport

When to book flights from Seattle to London

Are your dates flexible? Find out the best times to travel from Seattle to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to London

  • Are there onsite hotels at Heathrow Airport or Gatwick Airport?

    Heathrow Airport features a number of hotels connected directly to its terminals, so visitors have a selection of airports to choose from. In Terminal 4 travelers will find the Hilton London Heathrow Airport and the capsule hotel YOTEL, while in Terminal 5 there is the Sofitel London Heathrow. Gatwick airport also has a variety of hotel options available, such as Hampton by Hilton, YOTELAIR, and Bloc Hotel.

  • Can I fly from Seattle to London non-stop?

    British Airways, Iberia, Virgin Atlantic, Finnair, and Delta Air Lines all offer direct nonstop flights from Seattle to London via Heathrow Airport. Many other airlines also offer one-stop flights to London from Seattle with final destinations varying largely between Heathrow Airport, Gatwick Airport, and London City Airport.

  • What is the quickest way from Heathrow Airport to downtown London?

    The Heathrow Express is the fastest way to get to central London from Heathrow Airport and is conveniently connected to Terminals 2, 3, and 5. There is also a direct London Underground connection via the Piccadilly Line, for those who prefer the cheaper (but slower) method of travel.

  • Should I fly to Heathrow Airport or Gatwick Airport?

    Both airports are conveniently connected via public transport to central London with travel times roughly equal. However, if your final destination is on the south or east side of London, then Gatwick is likely the better option due to its close proximity, while Heathrow is more convenient for destinations on the west and north side.

  • What is the cheapest flight from Seattle to London?

    In the last 3 days, the lowest price for a flight from Seattle to London was C$ 327 for a one-way ticket and C$ 626 for a round-trip.

  • Which airports will I be using when flying from Seattle to London?

    When flying out of Seattle you will be using Seattle/Tacoma Intl. You will be landing at one of these airports: London Gatwick or London Heathrow.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to London?

    All the following airlines offer inflight Wi-Fi service on the Seattle to London flight route: American Airlines, Delta, Air France, KLM, Lufthansa, Virgin Atlantic, United Airlines, and Finnair.

  • Which aircraft models fly most regularly from Seattle to London?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Seattle to London flight route.

  • Which airline alliances offer flights from Seattle to London?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and London, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Seattle to London?

    There are direct flights from Seattle to London on a daily basis.

  • Which is the best airline for flights from Seattle to London, Virgin Atlantic or Finnair?

    The two airlines most popular with KAYAK users for flights from Seattle to London are Virgin Atlantic and Finnair. With an average price for the route of C$ 1,212 and an overall rating of 7.7, Virgin Atlantic is the most popular choice. Finnair is also a great choice for the route, with an average price of C$ 1,084 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Seattle to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Seattle to London

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 668 or less one-way and C$ 1,158 or less round-trip.
  • Link Light Rail and bus services connect Seattle-Tacoma International Airport to downtown Seattle quickly and efficiently. The Link is just outside the airport on the fourth floor of the adjacent parking garage and runs all the way from the airport to the University of Washington.
  • Families flying with children may want to consider visiting Seattle-Tacoma International Airport’s Playroom. It is the perfect spot to help kids burn off excess energy before their flight. The Playroom is located across from the Seattle Tap Room in the Central Terminal near the A gates.
  • There are many airports in London and travelers should keep their locations in mind when choosing which airport to fly into. London City Airport and Heathrow Airport are the most central of the airports and offer quick, easy access to the heart of London, while Gatwick Airport and London Stansted Airport are on the southside and northside of London, respectively.
  • Looking for a family-friendly activity to help pass the time prior to your flight? Why not check out a live music performance? All throughout the week, live music gigs are performed in Sea-Tac Airport’s various terminals to the enjoyment of passengers.
  • Travelers with flights from Seattle to London via Delta Air Lines may want to consider taking the chance to relax in comfort in one of Delta’s premium lounges. Delta operates two Delta Sky Clubs at Seattle-Tacoma International Airport, with one in Concourse A and the other in the airport’s Rooftop Area. There are also showers available at the Rooftop location.
See more tips

Prefer to fly non-stop from Seattle to London?

Find which airlines fly direct from Seattle/Tacoma Intl to London, which days they fly and book direct flights.

Nonstop departures

Seattle/Tacoma Intl to London

Monday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Tuesday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Wednesday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Thursday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Friday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Saturday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Sunday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

See more nonstop flights

Nonstop returns

London to Seattle/Tacoma Intl

Monday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Tuesday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Wednesday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Thursday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Friday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Saturday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Sunday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

See more nonstop flights
See more nonstop flights

Top 5 airlines serving from Seattle to London

 
See real verified KAYAK customer reviews for airlines flying from Seattle to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
FinnairOverall score based on 1385 reviews
7.5comfort
7.8boarding
8.2crew
7.0entertainment
6.9food
Airline reviews

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

10.0 ExcellentAnonymous, Apr. 2024LHR - SFO
Read more about Finnair reviews

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

The flight was Finnair but there was no indications anywhere that the checkin was for Finnair also. There was no one to ask. I think at a minimum they should list the code shares so people don’t stand in the wrong line for an hour.

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Flight ok, but me and other two passengers didn’t have connection with the entertainment in our seats. So, no movies, no games, no music… for 9 hours. The crew just told us that there’s nothing they can do but I noticed during the flight that there were empty seats, so they could have offered to us to change seats. Customer service could be better.

Had a nice flight to London on BA will fly with them again in the future

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

Helpful steward. Allowed me to move to some empty seats and I was able to get some sleep. He also had milk for my tea. Americans don’t realise that cream or half and half ruin tea.

Security was a mess at the Helsinki Airport. But I was delighted by the connecting flight waiting for us for JFK.

Cabin crew on our flight showed lack of any customer service gruff and acting annoyed if you asked anything and I mean anything Example a man on the seat over dropped his beer on my husbands blanket We asked if we could switch out blankets cabin crew Said. No we don’t have any extras OK well can you take the wet one Cabin crew looked disgusted and annoyed Took it no OK or yes just a growl

Quick flight. But cabin crew were very noisy and talking too much, especially when we were seated at the back of the plane trying to sleep through the night .

My ticket was for Premium Economy and all the seats were taken, I was placed in Economy class and I’m looking for a refund.

Unfortunately delayed 2 hrs due to faulty tyre.. which had to be changed, but better safe than sorry.

The delay was an issue. Other than that. Every thing good

Hi vergin Atlantic service was good but the flight ticket agent travel up charge me extra 57 pounds as a airport charges, actually I refuse to pay but they say if I not pay £57 then they say you will not be able to travel from Heathrow to goa ,so for me there was no option and it was just 3 day before my departure so i paid, so please look in to the matter. And I have a receipt of £ 57 as well .thanks

Staff didn’t check cabin well for landing seemed more interested in chatting to each other. Food was poor and differed from pre order.

We were in the last group to be called to the flight - which was 30 minutes late taking off. While we were lucky enough to have been given bulkhead seats (due to a medical condition I’d told them about beforehand) the seats weren’t particularly comfortable. A crying baby for the whole trip made things worse, so the crew managed very well with coping. The final thing I’d say was that there wasn’t enough food served during the flight.

Very good. Glad we had Premium for the flight out.

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff were fantastic friendly nice they came round and check we need anything else to eat or drink

I will never fly this airline again. Checking in was poor , we had to go back to the check in counter at Raleigh - Durham international airport three times because they didn’t issue my boarding pass but rather duplicated my husband’s twice which caused a big headache at the passport control at the airport which triggered security alert and wouldn’t let us pass through we we had to wait for long time to be able to explain and clear everything after talking to the supervisor.. No food on the plane , not even crackers. No food was offered to buy ether . No ear phone was provided . Very little time to make from one plane to another and nobody to assist with smooth transition. Flight itself , we felt safe so thank you to the pilots . But customer service was terrible . We spent $ 2500 on 2 tickets, so I cannot say that service was consistent with the price .

Seats are way too much now with these new airplanes especially long flights like we had. I was 7 month pregnant and in a lot of discomfort due to small seats.

Food was horrible. This wasn’t business class. No leg space, can’t sleep in row position, huge delay

I liked how easy my transfers between flights in Keflavik were. I would have appreciated more food options in Keflavik.

The plane was flaming hot! Could not breathe. Everyone coughing from heat. Awful.

My biggest problem was the flight from KEF to DUB was delayed, which caused me to miss my connecting flight in DUB and we were forced into an unplanned 10-hour layover in DUB. Crew and boarding staff were all very friendly but this was a real inconvenience and especially uncomfortable for my disabled wife.

Not much! This was my first flight with Iceland air and unfortunately it wasn’t what I have expected. My luggage is lost nothing as of yet where it was left. Not a good service at all!!

The seat size was more like a domestic than an international flight. In fact, i would compare the ammenities, quality and service to a short hall ryan air flight, which was unexpected for an international flight. The plane was extremely hot so sleeping was difficult. My biggest complaint was that they are very strict on carry on luggage only allowing it to weigh 10kg/22lb. I try to limit myself to a carryon so i don't have to mess with bagage claim, but the wieght restriction made it impossible. I have never had a carry on weight restriction (at least enforced) on an international flight. Will not be including them in future searches.

Pros: "I liked the northern lights look after boarding upon introduction of the captain and crew members. Everyone was super personal and uninformed looked great. The best part was when they started boarding from the last row, which is the most logical and efficient way to do it"
Pros: "Got assisted to the plane by airport staff as I was in a wheelchair"
Cons: "Food on board was awful. Ordered hamburger but not availabe having already pre paid. Pizza was poor quality and had no taste. Range of food disappointing"

good service from crew. Before the would have an option between cookies or nuts as snacks.. Now, there are only cookies. too bad. People who can not have sugar don't have a choice.

Iberia personnel on the ground is so rude. I would think twice in the future before booking another Iberia flight

I’m hoping for WiFi included. Everything else was very good

All corners have been cut and it’s a cheap experience that no longer is distinguished from most other cheap airlines

Rude security cunts. However the lady that issued my boarding ticket when I was flying back from New York was lovely & helpful!!

Appalling! The flight was delayed by 3.5 hours and the American Airlines staff at the airport where nit very helpful. Once boarded, the flight crew were unhelpful, the food was poor and the aircraft was tatty.

I called prior to flying to confirm our baggage allowance which was 5 bags. On our outbound flight thee were no problems. On the return flight we were charged for each bag totaling $400! We are working with customer service to resolve the issue.

Why no entertainment? Also water should be free, it is basic human right.

Late boarding. Delayed departure leading to rushed connection at Madrid Barajas. Not necessarily Iberia's fault but delay loading cargo didn't help.

Everything was great, except the food, which could have been flavorful.

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Very cramped seats in economy, difficult to get comfortable with your legs and feet and back. The seat width is ok but I’m average size. Food is HORRIBLE. Crew is friendly. Delays and very tight connections made it tough for navigating. We would have missed our connecting flight if it wasn’t delayed too. The terminal transit was slow and normally every 10 minutes before 8pm, after 8 pm is every 30 minutes!!!!! No free wine or drinks!! Below average attitude.

Leg room was better than expected. Lavatory’s were easy to access.crew was grea!

Horrible seat allocation. Boarding was slow. Food was average and so was entertainment. The TV terminal didn't work and so had to use remote.

Lost one checked bag.and wasted 30min waiting and filing missing baggage report. Very unsatisfied.

This was an American Airlines flight. The crew were very unhappy and quite grumpy. Abrupt to the point of being rude. The food was dreadful. Indeed the breakfast was in edible. I will avoid AA at all costs in the future.

Book cheap flights from Seattle to London

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to London found on KAYAK in the last 72 hours.
12/7Fri
1 stop
33h 55mSEA-LGW
C$ 448
18/7Thu
1 stop
33h 55mSEA-LGW
C$ 476
22/7Mon
1 stopIcelandair
13h 20mSEA-LHR
C$ 487
30/4Tue
1 stopLufthansa
17h 25mSEA-LHR
C$ 527
17/7Wed
1 stopIcelandair
11h 55mSEA-LGW
C$ 693
2/5Thu
2 stopsLufthansa
17h 10mSEA-LHR
C$ 716
21/7Sun
1 stopBritish Airways
13h 50mSEA-LGW
C$ 857
1/5Wed
directBritish Airways
9h 20mSEA-LHR
C$ 880
30/4Tue
directIberia
9h 20mSEA-LHR
C$ 2,087
19/9Thu
directIberia
9h 20mSEA-LHR
C$ 5,541

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Last minute flights from Seattle to London

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to London that are departing in the next 10 days.
26/4Fri
multi-stopLufthansa
16h 10mSEA-LHR
28/4Sun
multi-stopLufthansa
16h 57mLHR-SEA
C$ 895
26/4Fri
multi-stopSWISS
20h 45mSEA-LHR
28/4Sun
multi-stopSWISS
24h 45mLHR-SEA
C$ 917
27/4Sat
directKLM
9h 45mSEA-LHR
5/5Sun
directKLM
10h 30mLHR-SEA
C$ 1,029
28/4Sun
multi-stopVirgin Atlantic
14h 17mSEA-LGW
14/5Tue
multi-stopVirgin Atlantic
18h 18mLGW-SEA
C$ 1,076
26/4Fri
multi-stopFinnair
12h 48mSEA-LHR
6/5Mon
directFinnair
9h 45mLHR-SEA
C$ 1,248
27/4Sat
multi-stopBritish Airways
12h 48mSEA-LHR
4/5Sat
multi-stopBritish Airways
15h 02mLHR-SEA
C$ 1,262
29/4Mon
multi-stopIcelandair
16h 47mSEA-LGW
5/5Sun
multi-stopIcelandair
12h 40mLGW-SEA
C$ 1,689
28/4Sun
multi-stopIcelandair
11h 55mSEA-LGW
2/5Thu
multi-stopIcelandair
12h 40mLGW-SEA
C$ 1,871
29/4Mon
directBritish Airways
9h 20mSEA-LHR
3/5Fri
multi-stopBritish Airways
13h 01mLHR-SEA
C$ 4,232
28/4Sun
multi-stopFinnair
13h 14mSEA-LHR
11/5Sat
directFinnair
9h 45mLHR-SEA
C$ 10,563

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Seattle - London Flights

Departure:

Seattle (SEA)United States

Cabin classes:

C$ 4,884
C$ 2,174
C$ 880

Browse origins:

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  • Seattle

Browse destinations:

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  • London