SEA - LIS

C$ 497 Find Cheap Flights from Seattle to Lisbon

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 Lisbon departing on 16/1. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Lisbon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Lisbon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Lisbon, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Seattle to Lisbon (SEA-LIS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Lisbon 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Lisbon

Fri, 17 Oct - Thu, 30 Oct
Virgin Atlantic Logo
10:05 p.m. - 10:45 a.m.SEA-LIS
28h 40m1 stop
Virgin Atlantic Logo
10:00 a.m. - 10:27 p.m.LIS-SEA
19h 27m1 stop
C$ 893Virgin Atlantic
Find Deal
Mon, 6 Oct - Tue, 14 Oct
 Logo
6:01 a.m. - 8:20 a.m.SEA-LIS
18h 19m1 stop
 Logo
5:05 a.m. - 11:55 a.m.LIS-SEA
14h 50m1 stop
C$ 897
Find Deal
Sun, 16 Nov - Mon, 1 Dec
United Airlines Logo
8:15 a.m. - 9:20 a.m.SEA-LIS
17h 05m1 stop
United Airlines Logo
11:20 a.m. - 10:16 p.m.LIS-SEA
18h 56m1 stop
C$ 898United Airlines
Find Deal
Thu, 20 Nov - Thu, 27 Nov
Delta Logo
11:27 a.m. - 8:55 a.m.SEA-LIS
13h 28m1 stop
Delta Logo
10:00 a.m. - 8:06 p.m.LIS-SEA
18h 06m1 stop
C$ 900Delta
Find Deal
Thu, 20 Nov - Fri, 28 Nov
Delta Logo
11:27 a.m. - 8:55 a.m.SEA-LIS
13h 28m1 stop
Delta Logo
5:30 a.m. - 1:20 p.m.LIS-SEA
15h 50m1 stop
C$ 901Delta
Find Deal
Thu, 20 Nov - Thu, 27 Nov
Lufthansa Logo
2:00 p.m. - 10:50 p.m.SEA-LIS
24h 50m1 stop
Lufthansa Logo
5:00 a.m. - 12:10 p.m.LIS-SEA
15h 10m1 stop
C$ 908Lufthansa
Find Deal
Sat, 1 Nov - Mon, 17 Nov
British Airways Logo
2:35 p.m. - 10:30 p.m.SEA-LIS
24h 55m1 stop
British Airways Logo
6:35 p.m. - 4:55 p.m.LIS-SEA
30h 20m1 stop
C$ 918British Airways
Find Deal
Thu, 20 Nov - Wed, 26 Nov
Lufthansa Logo
2:00 p.m. - 10:50 p.m.SEA-LIS
24h 50m1 stop
Lufthansa Logo
6:10 a.m. - 1:20 p.m.LIS-SEA
15h 10m1 stop
C$ 922Lufthansa
Find Deal
Sat, 10 Jan - Thu, 22 Jan
United Airlines Logo
5:00 a.m. - 8:10 a.m.SEA-LIS
19h 10m3 stops
United Airlines Logo
10:55 a.m. - 10:43 p.m.LIS-SEA
19h 48m2 stops
C$ 959United Airlines
Find Deal
Sat, 22 Nov - Tue, 2 Dec
British Airways Logo
1:35 p.m. - 9:50 a.m.SEA-LIS
36h 15m1 stop
British Airways Logo
4:00 p.m. - 4:55 p.m.LIS-SEA
32h 55m1 stop
C$ 980British Airways
Find Deal

Everything you should know

Top airlines
Virgin Atlantic
Cheapest • from C$ 893 (round-trip)
Turkish Airlines
Best reviews • 7.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 19% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 893
Overall average: C$ 1,188
Virgin Atlantic
Fri 17/10Thu 30/10
SEA - LIS • 1 stop
Cheapest one-way flights
C$ 497
Typical prices: C$ 691-811
United Airlines
Fri 16/1
SEA - LIS • 1 stop
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Lisbon!
Booking Insights

KAYAK's insights & trends for Seattle to Lisbon flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Lisbon, 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 Lisbon is January, where tickets cost C$ 1,053 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is C$ 1,826 and C$ 1,672 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Lisbon, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Lisbon, you should book around 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flightC$ 497
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.
Flight from Seattle to Lisbon

When to book flights from Seattle to Lisbon

Are your dates flexible? Find out the best times to travel from Seattle to Lisbon 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 Lisbon

  • How early should I get to SEA on the date I’m supposed to travel?

    On the date you’re supposed to fly to Lisbon from Seattle, it’s in your best interest to reach SEA at least 2h ahead of your flight. Getting to this airport this early will give you adequate time to go through the airport’s time-consuming checkpoints and check out the interesting sites available in its terminals.

  • Does SEA have a spa?

    If you’d like to visit a spa while waiting for your flight at SEA, you’re in luck, as this airport is home to the fabulous Terminal Gateway Spa. Situated a short distance from Gate A5, this spa features exceptional professionals. Given that it offers its services at affordable rates, you won’t incur an exaggerated bill at this spa.

  • Can I leave my luggage at LIS?

    LIS has a luggage storage facility. Located next to car park P2, this facility offers secure storage services at affordable rates. It’s worth noting that as it is usually open 24/7, you can pick up your luggage at this facility whenever you feel like it.

  • Where can I shower at LIS?

    At LIS, you can shower at either ANA Lounge, located on the 6th floor of Terminal 1, or the Airport Business Center, near check-in desks 14 to 36 in Terminal 1. Please note that to gain entry to either, you’ll have to pay an entry fee.

  • What is the cheapest flight from Seattle to Lisbon?

    In the last 3 days, the lowest price for a flight from Seattle to Lisbon was C$ 359 for a one-way ticket and C$ 645 for a round-trip.

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

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Lisbon?

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

  • Which is the best airline for flights from Seattle to Lisbon, Turkish Airlines or British Airways?

    The two airlines most popular with KAYAK users for flights from Seattle to Lisbon are Turkish Airlines and British Airways. With an average price for the route of C$ 769 and an overall rating of 7.3, Turkish Airlines is the most popular choice. British Airways is also a great choice for the route, with an average price of C$ 1,421 and an overall rating of 6.6.

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

    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 Lisbon.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Lisbon 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 Lisbon?

    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 Lisbon 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 Lisbon?

    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 Lisbon from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Lisbon

  • If you are traveling to Lisbon with your kids, you should consider checking out Seattle-Tacoma International Airport’s (SEA) children’s play area. Located between the Central Terminal and Gates A, this children’s play area features a variety of toys and soft play areas for toddlers. Given that it is normally open round-the-clock, you can count on finding it open regardless of the time.
  • SEA features several nursing rooms. These nursing rooms are near Gates A9, C10, D10, D23, and N2. As they all feature changing tables, you can comfortably change your baby’s diapers in any of these rooms.
  • To pay for services and purchase goods easily once you land at Humberto Delgado Airport (LIS), you should convert some of your cash to the local currency. At SEA, you’ll be able to do so, as this airport features currency exchange sites. They are located in the ticketing level and baggage claim area in the Main Terminal and near Gates A and S.
  • LIS features information desks in its Arrivals Hall and Departures Hall. At any of these information desks, open from 7 am to 12 am, you can rest assured of getting the help you need once you land at this airport, as they are both manned by informed airport staff.
  • If you have the necessary documents, you can easily rent a car at LIS, as this airport features counters for car rental agencies such as Hertz, SIXT, Europcar, Avis, Budget, and other local car rentals. As the counters for these car rentals are within the airport’s terminal complex, you won’t need any form of ground transportation to get to the counter of your preferred car rental.

Reviews of the top airlines flying from Seattle to Lisbon

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Lisbon. 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 Lisbon? 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.
7.3
Turkish AirlinesOverall score based on 3968 reviews
7.4Entertainment
7.3Comfort
7.4Food
7.3Boarding
7.7Crew
Airline reviews

Rude staff. I would avoid using the word racist but definitely partially or discriminatory. My 72 yrs old mother who is also disabled was traveling on this flight. She was the second passenger boarded to the plane. The First elderly couple ahead of my mother were allowed to use the airplane bathroom but my mother was denied entry stating it was for safety reasons. My mother objected the the couple in front of her were allowed but hostess still stated that due to the flight safety reasons she can’t use it. Even my mother explained that he is using blood pressure medication that’s why she have to use the restroom frequently but the crew continued arguing her. At one point the Mae attendent even suggested that if that’s the case my mother can urinate in her seat. The level of disrespect against an elderly lady is beyond my comprehension. This matter will be taken to the social media to shame the employees involved.

2.0 MediocreRaj, Sep 2025LAX - IST
Read more Turkish Airlines reviews

Rude staff. I would avoid using the word racist but definitely partially or discriminatory. My 72 yrs old mother who is also disabled was traveling on this flight. She was the second passenger boarded to the plane. The First elderly couple ahead of my mother were allowed to use the airplane bathroom but my mother was denied entry stating it was for safety reasons. My mother objected the the couple in front of her were allowed but hostess still stated that due to the flight safety reasons she can’t use it. Even my mother explained that he is using blood pressure medication that’s why she have to use the restroom frequently but the crew continued arguing her. At one point the Mae attendent even suggested that if that’s the case my mother can urinate in her seat. The level of disrespect against an elderly lady is beyond my comprehension. This matter will be taken to the social media to shame the employees involved.

my experience was great with Turkish airlines . the problem i encountered was with kayak booking. When I booked . it showed that im allowed a bag . and when I got to the airport, i had to pay $165 for one bag.

Not up to Business Class standards. Two of the three toilets were out of order. The hostesses were aware and didn’t show any responsible act to do something. Food quality was not what we expect from Turkish hospitality. Overall we were not impressed and disappointed.

During mid flight, try to get a flight attendant to help I couldn’t find one Otherwise, everything was perfect

I was not given basinett seat.The connecting flight was missed due to airline fault i was not accomodated for hotel.Drinks were normt served frewuently.Never travelling again on tirkish airlines.I always travel wiyh family by turkish airline but no more.zero stars

The crew were very hospitable and pleasant. The food was pretty good. Unfortunately, there was a flight delay of more than 2 hours. We're not sure why but it appeared to be outside the control of Turkish Airlines.

Bough tickets with luggage, but made me pay at Airport as well

The economy seat was so uncomfortable, had not enough leg room for 13 hours flight, front seat basket was broken and couldn’t hold anything, food quality was horrible( we got food poisoned ) we charged for logged which used to be free. We paid too much for this flight and very disappointed. Turkish air line better to make satisfy and respect people instead of find different way to scam people.

This is really the rating of two flights. JFK to IST then IST to NQZ. New York to Istanbul was good. Good crew and all positives. The flight to Astana was so bad that brought it all down. Crew was nonexistent above the minimum, seats were cramped, and it was hot on the plane. Turkish Airlines seems to be slipping down to US based carriers level.

The 2 agents on the check in counter were super nice , helpful and very polite. Boarding was like a 1 2 3, I would recommend Turkish airlines for your next trip.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Three major things that led to my low rating, 1. Internet wasn't available for the whole time, and 2. TV became available way into flight, after numerous system reboots, and 3. Food is not good at all.

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Some how my flight was canceled, neither BA or Justfly.com accepted responsibility. I only found out about this the day before when I tried to check in. I had to book another flight which due to the time ( day before) cost me $300 more. I was still receiving notifications about the flight even when I was on another flight from you. So no my flight to London was not good.

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Everything you need to know for your flight from Seattle to Lisbon

Information on your arrival and departure airports

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