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$392+ Cheap flights from Lisbon (LIS) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Jun 19 — Jun 261
Fri 6/19
Fri 6/26
1 adult, Economy
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Cheap flight deals from Lisbon to Seattle

Cheapest flights from Lisbon to Seattle
Explore the most affordable flight options available from Lisbon to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/610:15 pm
LIS
-
SEA
1 stop26h 55m
Aer Lingus
Mon 6/227:10 pm
SEA
-
LIS
1 stop18h 25m
Aer Lingus
Deal found 5/20$783
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1310:15 pm
LIS
-
SEA
1 stop26h 55m
Aer Lingus
Mon 6/297:10 pm
SEA
-
LIS
1 stop18h 25m
Aer Lingus
Deal found 5/18$788
This Mytrip deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:15 am
LIS
-
SEA
3 stops35h 52m
Multiple Airlines
Thu 8/67:35 pm
SEA
-
LIS
3 stops19h 00m
Multiple Airlines
Deal found 5/20$855
This Mytrip deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:15 am
LIS
-
SEA
2 stops35h 25m
WestJet
Thu 8/67:35 pm
SEA
-
LIS
3 stops19h 00m
WestJet
Deal found 5/20$859
This Mytrip deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/136:10 am
LIS
-
SEA
2 stops35h 30m
Multiple Airlines
Mon 6/2910:30 am
SEA
-
LIS
3 stops36h 00m
Multiple Airlines
Deal found 5/17$870
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:10 am
LIS
-
SEA
2 stops35h 30m
Multiple Airlines
Sun 9/137:10 pm
SEA
-
LIS
1 stop18h 55m
Multiple Airlines
Deal found 5/18$875
This Mytrip deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:35 pm
LIS
-
SEA
3 stops33h 45m
Multiple Airlines
Thu 12/32:35 pm
SEA
-
LIS
3 stops24h 20m
Multiple Airlines
Deal found 5/20$888
This Mytrip deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/229:20 am
LIS
-
SEA
2 stops32h 20m
Multiple Airlines
Thu 6/43:40 pm
SEA
-
LIS
3 stops35h 15m
Multiple Airlines
Deal found 5/15$892
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:10 am
LIS
-
SEA
2 stops35h 30m
Multiple Airlines
Tue 9/157:10 pm
SEA
-
LIS
1 stop17h 35m
Multiple Airlines
Deal found 5/18$893
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:10 am
LIS
-
SEA
2 stops35h 30m
Multiple Airlines
Mon 9/147:10 pm
SEA
-
LIS
1 stop15h 45m
Multiple Airlines
Deal found 5/18$894

Find flight deals from Lisbon to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Lisbon (LIS) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$783
(Kiwi.com)

One-way from

$392
(Trip.com)

Popular in

January

Cheapest in

February

Average price

$975
Provider with most accurate pricing for Lisbon Humberto Delgado-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Seattle/Tacoma Intl flights.
Search Deals
From Lisbon Humberto Delgado to Seattle/Tacoma Intl
Search Deals
One-way flight from Lisbon Humberto Delgado to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Lisbon to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 20, 2026.
Use the filters below to find and compare flights from Lisbon to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 11/5

5:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Thu 11/12

7:00 am-8:10 am

2 stops17h 10m

$990

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 6/6

5:05 am-12:20 pm

1 stop15h 15m

Seattle/Tacoma Intl

Thu 6/11

6:50 pm-10:45 pm

1 stop19h 55m

$993
Quickest round-trip

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 11/11

5:00 am-12:00 pm

1 stop15h 00m

Seattle/Tacoma Intl

Thu 12/3

2:00 pm-2:55 pm

1 stop16h 55m

$994

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 6/6

5:00 am-4:24 pm

1 stop19h 24m

Seattle/Tacoma Intl

Mon 6/15

6:50 pm-5:50 pm

1 stop15h 00m

$996

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 6/14

6:10 am-6:45 pm

2 stops44h 35m

Seattle/Tacoma Intl

Mon 6/29

9:45 pm-12:00 pm

1 stop30h 15m

$1,000

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 6/17

4:45 pm-5:20 pm

1 stop32h 35m

Seattle/Tacoma Intl

Sat 7/11

7:15 pm-11:20 pm

1 stop20h 05m

$1,042

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 6/18

5:55 am-5:20 pm

1 stop19h 25m

Seattle/Tacoma Intl

Sat 7/11

7:15 pm-11:20 pm

1 stop20h 05m

$1,042

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 6/13

5:05 am-12:20 pm

1 stop15h 15m

Seattle/Tacoma Intl

Mon 6/29

7:30 am-8:20 am

1 stop16h 50m

$1,175

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 6/16

5:05 am-12:20 pm

1 stop15h 15m

Seattle/Tacoma Intl

Fri 7/10

7:00 am-10:30 am

2 stops19h 30m

$1,175
Cheapest one-way

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 6/28

6:10 am-9:40 am

3 stops35h 30m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/17

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Lisbon to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lisbon to Seattle in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Lisbon-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Lisbon-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Lisbon-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lisbon-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lisbon-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Lisbon to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Lisbon with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Lisbon to Seattle?

Currently, February is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $825). Flying from Lisbon to Seattle in January is currently the most expensive (average of $1,326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Lisbon to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated May 20, 2026.
Read through reviews of airlines operating flights from Lisbon to Seattle, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,454 reviews

Comfort

7.8

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Delta
7.9
Good
8,454 reviews
Delta
7.9
Good
8,454 reviews

Comfort

7.8

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

Related info for your journey

Find useful and relevant information for your journey from Lisbon to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Lisbon to Seattle?

    A quick flight from Lisbon to Seattle can take about 14h 37m. United Airlines provides one of the quickest options available for as low as $995. There are 5199 mi between Lisbon and Seattle. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Lisbon to Seattle round-trip?

    Flying on Delta is currently your cheapest option to Seattle, with prices starting at $1,019.

  • What are the cheapest airlines to fly from Lisbon to Seattle one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $563. British Airways flights start at $568 while deals on American Airlines start at $588 one-way.

  • Can I find deals for flights from Lisbon to Seattle that include hotel bookings?

    Yes. In addition to deals on Lisbon to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Lisbon to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lisbon to Seattle.

  • Can I find deals for business class flights from Lisbon to Seattle?

    Yes. Cheapflights offers flight deals from Lisbon to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Lisbon to Seattle?

    Currently, February is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $825). Flying from Lisbon to Seattle in January is currently the most expensive (average of $1,326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Marysville
Shoreline

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Lisbon to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Lisbon to Portland flights
Porto to Seattle flights

Top airline flying from Lisbon to Seattle

Discover the top airline that operate flights from Lisbon to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,019Average$1,112FlexibilityNo cancel feeOn-timeN/A

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