SEA - LIS

C$ 533 Find Cheap Flights from Seattle to Lisbon – Compare and Save

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 13/10. 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$ 1,151
Typical prices: C$ 1,061-C$ 757
United Airlines
Mon 2/11Thu 19/11
SEA - LIS • 2 stops
Cheapest one-way flights
C$ 533
Typical prices: C$ 571-C$ 891
British Airways
Tue 13/10
SEA - LIS • 1 stop
Top airlines
Cheapest • from C$ 1,151 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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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
Cheapest • Avg C$ 941 (round-trip)
Shortest trip • 14h 10m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 41% price drop
Most popular
Good to know
Good to know
+1
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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

Mon, 2 Nov - Thu, 19 Nov
United Airlines Logo
8:30 a.m. - 8:10 a.m.
SEA
-
LIS
15h 40m
2 stops
United Airlines Logo
5:00 a.m. - 12:00 p.m.
LIS
-
SEA
15h 00m
1 stop
C$ 1,151United Airlines
Mon, 23 Nov - Wed, 2 Dec
Delta Logo
2:05 p.m. - 5:30 p.m.
SEA
-
LIS
19h 25m
1 stop
Delta Logo
11:30 a.m. - 11:50 a.m.
LIS
-
SEA
32h 20m
1 stop
C$ 1,152Delta
Mon, 2 Nov - Mon, 16 Nov
Delta Logo
7:20 a.m. - 8:00 a.m.
SEA
-
LIS
16h 40m
1 stop
Delta Logo
11:30 a.m. - 11:47 a.m.
LIS
-
SEA
32h 17m
1 stop
C$ 1,154Delta
Sun, 22 Nov - Wed, 2 Dec
Delta Logo
11:05 p.m. - 8:00 a.m.
SEA
-
LIS
24h 55m
2 stops
Delta Logo
11:30 a.m. - 11:50 a.m.
LIS
-
SEA
32h 20m
1 stop
C$ 1,159Delta
Sat, 7 Nov - Thu, 19 Nov
United Airlines Logo
12:20 p.m. - 8:10 a.m.
SEA
-
LIS
35h 50m
1 stop
United Airlines Logo
5:00 a.m. - 12:00 p.m.
LIS
-
SEA
15h 00m
1 stop
C$ 1,169United Airlines
Sat, 7 Nov - Mon, 16 Nov
Delta Logo
10:00 p.m. - 9:00 a.m.
SEA
-
LIS
27h 00m
1 stop
Delta Logo
11:30 a.m. - 11:47 a.m.
LIS
-
SEA
32h 17m
1 stop
C$ 1,170Delta
Tue, 13 Oct - Tue, 20 Oct
United Airlines Logo
8:10 a.m. - 10:30 a.m.
SEA
-
LIS
18h 20m
1 stop
United Airlines Logo
5:05 a.m. - 12:20 p.m.
LIS
-
SEA
15h 15m
1 stop
C$ 1,218United Airlines
Tue, 17 Nov - Tue, 1 Dec
United Airlines Logo
8:30 a.m. - 8:10 a.m.
SEA
-
LIS
15h 40m
2 stops
United Airlines Logo
11:20 a.m. - 9:56 p.m.
LIS
-
SEA
42h 36m
3 stops
C$ 1,219United Airlines
Mon, 12 Oct - Wed, 21 Oct
United Airlines Logo
11:13 p.m. - 9:20 a.m.
SEA
-
LIS
26h 07m
2 stops
United Airlines Logo
5:05 a.m. - 12:20 p.m.
LIS
-
SEA
15h 15m
1 stop
C$ 1,222United Airlines
Sat, 21 Nov - Wed, 2 Dec
Delta Logo
11:53 p.m. - 8:00 a.m.
SEA
-
LIS
24h 07m
2 stops
Delta Logo
11:30 a.m. - 11:50 a.m.
LIS
-
SEA
32h 20m
1 stop
C$ 1,225Delta
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.

How much is a round-trip flight from Seattle to Lisbon?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Lisbon departing in November.

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$ 682 (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$ 1,707 and C$ 1,528 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 4 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJune
Cheapest flightC$ 533
Best time to beat the crowds but there is an average 48% increase in price.
Most popular time to fly (7% 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 5 days, the lowest price for a flight from Seattle to Lisbon was C$ 533 for a one-way ticket and C$ 1,151 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.
7.4
Turkish AirlinesOverall score based on 4409 reviews
7.8Crew
7.3Comfort
7.5Food
7.3Boarding
7.5Entertainment
Airline reviews

Entertainment system is okay, flight attendants were ok. Leg space very narrow, I couldn’t get what I wanted to eat, dinner nor breakfast.

6.0 GoodAnonymous, Jun 2026
SFO - IST
Read more Turkish Airlines reviews

Entertainment system is okay, flight attendants were ok. Leg space very narrow, I couldn’t get what I wanted to eat, dinner nor breakfast.

Excellent experience with business class area. Staff was attentive and food was amazing. Only one bathroom for business class which was logistically difficult for the staff while preparing meals. Need to offer fluids with meals. I did not get enough water to drink. But overall I rate it 5 star.

On time, great food, good drink selection! Only down was alcohol-free lounge. Lufthansa had a much better offering!

Be honest of what you sell: This was sold as Business Class on all three legs, while the JetBlue plane didn't even have business class seats, and wanted $164 for extra legroom seats.

Seat assignments for family traveling with 2 children. Loud crowd during sleep time

It was crowded… the bathrooms dirty and smelly. The seats have been made even smaller.

delayed to take off from detroit by 3 hours lost baggage in istanbul and now in venice without baggage

Seats were very tight with poor legroom - and I am average height. During the 12 hour flight, tiny paper cups of drinks we're only offered during the super and breakfast services, with the crew nowhere to be seen in between. One of the bathrooms was out of order, leading to long lines waiting to use the remaining two available to the economy class passengers.

short flight but we still got a very nice lunch and the crew did an excellent job in taking care of us

For that price on Business class, I expected to have the pod seats. These were configured as 2/3/2 and my seat mate talked half the flight with a friend across the isle, loudly. Very uncouth.

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

Information on your arrival and departure airports