SEA - LIS

C$ 456 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 11/2. 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, 0 bags

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

Sat, 22 Nov - Tue, 9 Dec
United Airlines Logo
12:10 a.m. - 8:10 a.m.SEA-LIS
24h 00m1 stop
United Airlines Logo
10:15 a.m. - 9:46 p.m.LIS-SEA
19h 31m2 stops
C$ 709United Airlines
Find Deal
Mon, 1 Dec - Mon, 8 Dec
United Airlines Logo
8:10 a.m. - 9:20 a.m.SEA-LIS
17h 10m1 stop
United Airlines Logo
5:00 a.m. - 12:10 p.m.LIS-SEA
15h 10m1 stop
C$ 711United Airlines
Find Deal
Mon, 23 Feb - Wed, 4 Mar
Multiple Airlines Logo
12:37 p.m. - 9:20 a.m.SEA-LIS
36h 43m3 stops
Multiple Airlines Logo
3:55 p.m. - 3:01 p.m.LIS-SEA
31h 06m2 stops
C$ 716Multiple Airlines
Find Deal
Sat, 10 Jan - Sun, 18 Jan
Multiple Airlines Logo
11:45 p.m. - 8:10 a.m.SEA-LIS
24h 25m1 stop
Multiple Airlines Logo
10:50 a.m. - 7:16 p.m.LIS-SEA
40h 26m2 stops
C$ 719Multiple Airlines
Find Deal
Sat, 14 Feb - Sat, 14 Mar
Air Canada Logo
8:00 p.m. - 9:20 a.m.SEA-LIS
29h 20m2 stops
Air Canada Logo
6:10 a.m. - 10:16 p.m.LIS-SEA
23h 06m2 stops
C$ 722Air Canada
Find Deal
Thu, 12 Feb - Thu, 12 Mar
Lufthansa Logo
2:00 p.m. - 10:50 p.m.SEA-LIS
24h 50m1 stop
Lufthansa Logo
5:00 a.m. - 1:10 p.m.LIS-SEA
15h 10m1 stop
C$ 730Lufthansa
Find Deal
Thu, 12 Feb - Wed, 11 Mar
Lufthansa Logo
2:00 p.m. - 10:50 p.m.SEA-LIS
24h 50m1 stop
Lufthansa Logo
6:10 a.m. - 2:20 p.m.LIS-SEA
15h 10m1 stop
C$ 733Lufthansa
Find Deal
Sun, 9 Nov - Wed, 19 Nov
British Airways Logo
6:50 p.m. - 9:50 a.m.SEA-LIS
31h 00m1 stop
British Airways Logo
3:55 p.m. - 4:55 p.m.LIS-SEA
33h 00m1 stop
C$ 782British Airways
Find Deal
Thu, 12 Feb - Wed, 11 Mar
Air Canada Logo
5:50 a.m. - 7:55 a.m.SEA-LIS
18h 05m2 stops
Air Canada Logo
5:00 a.m. - 7:16 p.m.LIS-SEA
21h 16m2 stops
C$ 793Air Canada
Find Deal
Thu, 12 Feb - Fri, 20 Feb
British Airways Logo
6:50 p.m. - 9:55 p.m.SEA-LIS
19h 05m1 stop
British Airways Logo
7:05 a.m. - 4:55 p.m.LIS-SEA
17h 50m1 stop
C$ 852British Airways
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from C$ 709 (round-trip)
Turkish Airlines
Best reviews • 7.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 22% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 709
Overall average: C$ 1,020
United Airlines
Sat 22/11Tue 9/12
SEA - LIS • 1 stop
Cheapest one-way flights
C$ 456
Typical prices: C$ 750-C$ 1,021
Multiple Airlines
Wed 11/2
SEA - LIS • 2 stops
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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$ 1,000 (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$ 1,842 and C$ 1,634 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 2 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonJune
Cheapest flightC$ 456
Best time to beat the crowds but there is an average 43% increase in price.
Most popular time to fly and prices are also 5% 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$ 456 for a one-way ticket and C$ 709 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?

    oneworld, and Star Alliance are the airline alliances operating flights between Seattle and Lisbon, with oneworld 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$ 777 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$ 1,436 and an overall rating of 6.7.

  • 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 4029 reviews
7.7Crew
7.3Boarding
7.4Food
7.4Entertainment
7.3Comfort
Airline reviews

Boeing 777 is a bad choice for a such a long flight.

6.0 GoodAnonymous, Oct 2025IAD - IST
Read more Turkish Airlines reviews

Boeing 777 is a bad choice for a such a long flight.

The staff at IST airport could have been more helpful. Too much wasted time and the plane from IST to KHI was just horrible. The plane was not clean and smelled bad!

This is my 2nd time with the Turkish airline. Would definitely recommend. In stability we connected to Indiago would not recommend, very cramped seating. No inflight entertainment..service was inferior.

I wouldn't know what the flight was like. AI canceled my flight reservation!! There's no way to speak to an actual human to fix the issue! NEVER AGAIN! ALWAYS BOOK YOUR FLIGHT DIRECTLY WITH THE AIRLINE NEVER GO THROUGH KAYAK OR JUSTFLY.COM!!

Paying extra for premium seats was wasted. Turkish Airlines takes 2 seats for bassinet. The lady next to me had a baby with bassinet Bassinet was in front of my seat

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

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

Horrible leg room - coach seating with empty seat in middle on a 3 across seating. You buy business class for comfort which includes leg room. Absolutely no entertainment options either. Awful experience

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Economy seats felt more cramped than other flights we have taken.7 hr, painful sitting hours 6 and 7. Web site difficult to deal with. Originally put in for 1 special meal due to type 2. Meal was awful. Tried to change selection to standard for return flight, on app and website, unable to complete that action.

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

Information on your arrival and departure airports

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