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$353+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Jul 21 — Jul 281
Tue 7/21
Tue 7/28
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 June 21, 2026.

This Mytrip deal was found by Cheapflights users on 6/20. 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.
Sat 8/156:10 am
LIS
-
SEA
2 stops22h 50m
Multiple Airlines
Fri 8/283:40 pm
SEA
-
LIS
2 stops21h 10m
Multiple Airlines
Deal found 6/20$833
This Mytrip deal was found by Cheapflights users on 6/21. 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 8/189:15 pm
LIS
-
SEA
2 stops22h 30m
Multiple Airlines
Wed 8/267:00 pm
SEA
-
LIS
3 stops35h 35m
Multiple Airlines
Deal found 6/21$852
This Trip.com deal was found by Cheapflights users on 6/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:15 am
LIS
-
SEA
2 stops35h 25m
WestJet
Sun 7/197:00 am
SEA
-
LIS
2 stops30h 45m
WestJet
Deal found 6/18$855
This American Airlines deal was found by Cheapflights users on 6/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:35 am
LIS
-
SEA
2 stops23h 01m
American Airlines
Mon 9/211:38 pm
SEA
-
LIS
2 stops25h 32m
American Airlines
Deal found 6/19$860
This American Airlines deal was found by Cheapflights users on 6/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:05 am
LIS
-
SEA
1 stop19h 46m
American Airlines
Tue 10/201:30 pm
SEA
-
LIS
1 stop18h 05m
American Airlines
Deal found 6/20$873
This British Airways deal was found by Cheapflights users on 6/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:05 am
LIS
-
SEA
1 stop19h 52m
British Airways
Mon 9/211:30 pm
SEA
-
LIS
1 stop15h 25m
British Airways
Deal found 6/19$874
This KLM deal was found by Cheapflights users on 6/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:20 am
LIS
-
SEA
1 stop15h 15m
Multiple Airlines
Tue 9/151:30 pm
SEA
-
LIS
1 stop13h 45m
Multiple Airlines
Deal found 6/21$875

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 June 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$833
(Mytrip)

One-way from

$353
(Kiwi.com)

Popular in

January

Cheapest in

October

Average price

$1,033
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. 3% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 21, 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

Sat 11/21

5:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Mon 12/28

2:05 pm-3:10 pm

1 stop17h 05m

$874

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 10/16

11:05 am-10:51 pm

1 stop19h 46m

Seattle/Tacoma Intl

Tue 10/20

11:34 am-3:35 pm

2 stops20h 01m

$875

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 9/17

11:05 am-10:57 pm

1 stop19h 52m

Seattle/Tacoma Intl

Mon 9/21

1:30 pm-12:55 pm

1 stop15h 25m

$883

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 7/9

6:10 am-9:40 am

2 stops35h 30m

Seattle/Tacoma Intl

Fri 7/24

7:00 am-9:45 pm

2 stops30h 45m

$966

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 7/20

8:15 pm-1:45 pm

1 stop25h 30m

Seattle/Tacoma Intl

Fri 8/28

3:55 pm-10:05 pm

1 stop22h 10m

$993
Quickest round-trip

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 7/19

5:00 am-11:33 am

1 stop14h 33m

Seattle/Tacoma Intl

Sun 7/26

6:35 pm-5:50 pm

1 stop15h 15m

$1,113

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 7/24

5:00 am-4:20 pm

1 stop19h 20m

Seattle/Tacoma Intl

Thu 8/6

7:15 am-10:55 am

2 stops19h 40m

$1,129

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 7/9

5:00 am-4:20 pm

1 stop19h 20m

Seattle/Tacoma Intl

Fri 7/24

7:30 am-10:55 am

2 stops19h 25m

$1,130

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 7/9

11:35 am-9:40 am

3 stops30h 05m

Seattle/Tacoma Intl

Fri 7/24

3:40 pm-9:35 pm

2 stops21h 55m

$1,141

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 7/25

7:10 am-6:25 pm

1 stop19h 15m

Seattle/Tacoma Intl

Sat 9/5

5:50 am-6:05 pm

2 stops28h 15m

$1,150

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 19 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 June.
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, October is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $888). 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 June 21, 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
7.8
Good
8,423 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Comfort

7.8

Overall

7.8

Entertainment

7.8

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
7.8
Good
8,423 reviews
Delta
7.8
Good
8,423 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Comfort

7.8

Overall

7.8

Entertainment

7.8

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 47m. Delta provides one of the quickest options available for as low as $874. 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 $1,040.

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

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $582. American Airlines flights start at $588 while deals on Aer Lingus start at $594 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, October is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $888). 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
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville

Browse thousands of different options on Cheapflights for your next trip

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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 June 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,040Average$1,144FlexibilityNo cancel feeOn-timeN/A

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