SEA - LIS

C$ 336 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 13/4. 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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Everything you should know

Cheapest round-trip
C$ 789
Overall average: C$ 995
Lufthansa
Wed 8/4Wed 22/4
SEA - LIS • 1 stop
Cheapest one-way flights
C$ 336
Typical prices: C$ 440-C$ 882
Multiple Airlines
Mon 13/4
SEA - LIS • 3 stops
Top airlines
Lufthansa
Cheapest • from C$ 789 (round-trip)
Turkish Airlines
Best reviews • 7.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Seattle and Lisbon. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Istanbul (IST)
Cheapest • Avg C$ 764 (round-trip)
Munich (MUC)
Shortest trip • 14h 10m (one-way)
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 40% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Lisbon!
Flight Deals
Booking Insights
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

Wed, 8 Apr - Wed, 22 Apr
Lufthansa Logo
6:50 p.m. - 10:45 p.m.
SEA
-
LIS
19h 55m
1 stop
Lufthansa Logo
5:05 a.m. - 12:20 p.m.
LIS
-
SEA
15h 15m
1 stop
C$ 789Lufthansa
Sun, 12 Apr - Sat, 25 Apr
United Airlines Logo
6:50 p.m. - 10:45 p.m.
SEA
-
LIS
19h 55m
1 stop
United Airlines Logo
5:05 a.m. - 12:20 p.m.
LIS
-
SEA
15h 15m
1 stop
C$ 829United Airlines
Fri, 17 Apr - Tue, 21 Apr
United Airlines Logo
6:50 p.m. - 10:45 p.m.
SEA
-
LIS
19h 55m
1 stop
United Airlines Logo
5:05 a.m. - 12:20 p.m.
LIS
-
SEA
15h 15m
1 stop
C$ 833United Airlines
Fri, 17 Apr - Tue, 21 Apr
United Airlines Logo
6:50 p.m. - 10:45 p.m.
SEA
-
LIS
19h 55m
1 stop
United Airlines Logo
5:05 a.m. - 12:20 p.m.
LIS
-
SEA
15h 15m
1 stop
C$ 834United Airlines
Fri, 17 Apr - Tue, 21 Apr
United Airlines Logo
6:50 p.m. - 10:45 p.m.
SEA
-
LIS
19h 55m
1 stop
United Airlines Logo
11:25 a.m. - 11:48 a.m.
LIS
-
SEA
32h 23m
2 stops
C$ 837United Airlines
Tue, 14 Apr - Mon, 27 Apr
United Airlines Logo
10:48 a.m. - 10:45 p.m.
SEA
-
LIS
27h 57m
2 stops
United Airlines Logo
5:05 a.m. - 12:20 p.m.
LIS
-
SEA
15h 15m
1 stop
C$ 840United Airlines
Tue, 21 Apr - Wed, 29 Apr
Delta Logo
6:40 p.m. - 5:50 p.m.
SEA
-
LIS
15h 10m
1 stop
Delta Logo
5:00 a.m. - 11:40 a.m.
LIS
-
SEA
14h 40m
1 stop
C$ 842Delta
Sun, 12 Apr - Mon, 20 Apr
United Airlines Logo
6:50 p.m. - 10:45 p.m.
SEA
-
LIS
19h 55m
1 stop
United Airlines Logo
1:00 p.m. - 11:48 a.m.
LIS
-
SEA
30h 48m
2 stops
C$ 844United Airlines
Wed, 8 Apr - Wed, 22 Apr
United Airlines Logo
6:50 p.m. - 10:45 p.m.
SEA
-
LIS
19h 55m
1 stop
United Airlines Logo
5:05 a.m. - 12:20 p.m.
LIS
-
SEA
15h 15m
1 stop
C$ 846United Airlines
Mon, 20 Apr - Fri, 8 May
Delta Logo
1:45 p.m. - 5:50 p.m.
SEA
-
LIS
20h 05m
2 stops
Delta Logo
5:00 a.m. - 11:42 a.m.
LIS
-
SEA
14h 42m
1 stop
C$ 849Delta
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$ 675 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is C$ 1,639 and C$ 1,471 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 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flightC$ 336
Best time to beat the crowds (40% less expensive on average)
Most popular time to fly (8% more expensive 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$ 336 for a one-way ticket and C$ 789 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 is the only airline alliance operating flights between Seattle and Lisbon.

  • 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 airline 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 4256 reviews
7.3Boarding
7.5Food
7.8Crew
7.5Entertainment
7.3Comfort
Airline reviews

IAH to Istanbul was outstanding across the board. The flight from Istanbul to Male was good, not great.

8.0 ExcellentDavid, Mar 2026
IAH - IST
Read more Turkish Airlines reviews

IAH to Istanbul was outstanding across the board. The flight from Istanbul to Male was good, not great.

the cabin was kept too hot. couldn't sleep as a result

It was an amazing experience. Flight crew's service, hospitality, and the food were phenomenal. I don't think I'd want to try any other airline company after this. I would definitely recommend to friends and family. Thank you Turkish Airlines !

Business Class pods are horrible. If you're petite, you might be able to sleep on the uncomfortable seat and bed. Crew and food are fantastic.

I have travelled many times on Turkish, but they always board at least 30-40 minutes past the stated time. If informed properly, passengers can choose to spend more time in the .lounge instead of standing around by the gate waiting to board. The new lounge at DFW was a big disappointment. The aircraft itself was a shock. In the past I have flown this sector with regular business class seating configuration of 1-2-1, The 2-3-2 seating is very disappointing after paying such high prices for tickets. The DFW to Istanbul segment was slightly better, but the Istanbul to Delhi segment was no better than premium economy. I will try to travel more on airlines which give business class passengers more value for their money.

Good overall. Seat spacing a bit tight between IST and ISB.

Excellent staff despite some trying passenger situations. Very impressed with their good attitudes and kindness.

Crew were unfriendly, touch screen for movies didn't work very well, seats were tight and uncomfortable

After arriving in Istanbul, the transit information on the electronic board showed a tight departure time, and the gate changed in the middle, making it difficult to make it on time.

Typically good service onboard but baggage delay in airport was significant

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

Information on your arrival and departure airports

Seattle (SEA)
Lisbon (LIS)