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SEA - LIS

£520 Find cheap flights from Seattle to Lisbon

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Lisbon departing on 5/11. 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 15/6
Sat 22/6

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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
In the last 7 days, travellers have searched 42,211,976 times on KAYAK, and here's why:

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Cheap flight deals 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 and deals for you by selecting your travel dates.
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07:12 - 08:10SEA-LIS
16h 58m1 stop
05:00 - 12:00LIS-SEA
15h 00m1 stop
£520
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Tue, 5 Nov - Wed, 13 Nov
23:50 - 08:10SEA-LIS
25h 20m2 stops
11:00 - 21:14LIS-SEA
18h 14m1 stop
£560
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Sat, 2 Nov - Sat, 16 Nov
07:20 - 09:00SEA-LIS
17h 40m1 stop
10:00 - 22:20LIS-SEA
20h 20m1 stop
£565Delta
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Sun, 3 Nov - Sun, 17 Nov
22:55 - 08:00SEA-LIS
26h 05m1 stop
10:00 - 22:20LIS-SEA
20h 20m1 stop
£571Delta
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Sat, 2 Nov - Sun, 17 Nov
22:55 - 08:00SEA-LIS
26h 05m1 stop
15:25 - 10:15LIS-SEA
26h 50m1 stop
£581KLM
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Sat, 2 Nov - Sun, 10 Nov
19:40 - 17:55SEA-LIS
14h 15m1 stop
11:15 - 21:43LIS-SEA
18h 28m1 stop
£660British Airways
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Sun, 1 Sep - Wed, 27 Nov
16:26 - 23:10SEA-LIS
22h 44m2 stops
12:40 - 23:45LIS-SEA
42h 05m2 stops
£678SWISS
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Wed, 23 Oct - Thu, 31 Oct
13:30 - 18:00SEA-LIS
20h 30m1 stop
11:05 - 22:29LIS-SEA
19h 24m1 stop
£799British Airways
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Wed, 12 Jun - Wed, 19 Jun
13:10 - 23:10SEA-LIS
26h 00m2 stops
15:35 - 18:26LIS-SEA
34h 51m2 stops
£805SWISS
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Wed, 18 Sep - Mon, 7 Oct
07:50 - 10:45SEA-LIS
18h 55m1 stop
15:35 - 10:15LIS-SEA
26h 40m1 stop
£806KLM
Find Deal
Tue, 25 Jun - Tue, 9 Jul

Flights from Seattle to Lisbon - Travel Insights & Trends

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 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 February, where tickets cost £570 on average. On the other hand, the most expensive months are June and May, where the average cost of tickets is £1,194 and £1,088 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Seattle to Lisbon, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 37 days before departure.

Which airlines provide the cheapest flights from Seattle to Lisbon?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Lisbon from Seattle were found on British Airways (£689) and United Airlines (£735), and the lowest return tickets were found on Delta (£565) and KLM (£581).

Good to know - Cheap tickets from Seattle to Lisbon

Low season

January

High season

September

Cheapest flight

£520
Best time to beat the crowds (31% less expensive on average)
Most popular time to fly (2% 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 return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 £873 for a one-way ticket and £659 for a return.

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

    Seattle airport is called Seattle/Tacoma Intl and the only airport in Lisbon is Lisbon Humberto Delgado.

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

  • 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 return 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.

See more FAQs

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.
See more tips

Book cheap flights from Seattle to Lisbon

Cheapest flights to Lisbon from Seattle found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Lisbon found on KAYAK in the last 72 hours.
10/6Mon
2 stopsBritish Airways
22h 00mSEA-LIS
£689
20/7Sat
2 stopsUnited Airlines
25h 33mSEA-LIS
£735
21/7Sun
2 stopsUnited Airlines
23h 50mSEA-LIS
£740
19/7Fri
2 stopsUnited Airlines
26h 05mSEA-LIS
£775
23/9Mon
3 stopsUnited Airlines
19h 45mSEA-LIS
£783
1/9Sun
3 stopsUnited Airlines
19h 45mSEA-LIS
£1,063
6/9Fri
2 stopsDelta
23h 30mSEA-LIS
£1,102
13/6Thu
2 stopsUnited Airlines
26h 05mSEA-LIS
£1,232
30/5Thu
2 stopsUnited Airlines
26h 05mSEA-LIS
£1,327

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Last minute flights from Seattle to Lisbon

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 Lisbon that are departing in the next 10 days.
18/5Sat
multi-stop
34h 10mSEA-LIS
26/5Sun
multi-stop
19h 05mLIS-SEA
£1,650
20/5Mon
multi-stop
17h 30mSEA-LIS
27/5Mon
multi-stop
18h 57mLIS-SEA
£2,229

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Seattle - Lisbon Flights

Departure:

Seattle (undefined)United States

Destination:

Lisbon (LIS)Portugal

Cabin classes:

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