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$419+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Aug 19 — Aug 261
Wed 8/19
Wed 8/26
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 July 20, 2026.

This Ticket deal was found by Cheapflights users on 7/17. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:55 pm
LIS
-
SEA
1 stop22h 50m
Scandinavian Airlines
Fri 9/113:55 pm
SEA
-
LIS
1 stop22h 10m
Scandinavian Airlines
Deal found 7/17$809
This Rumbo deal was found by Cheapflights users on 7/19. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:55 pm
LIS
-
SEA
1 stop22h 50m
Scandinavian Airlines
Fri 9/183:55 pm
SEA
-
LIS
1 stop22h 10m
Scandinavian Airlines
Deal found 7/19$823
This Mytrip deal was found by Cheapflights users on 7/17. 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.
Tue 9/16:15 am
LIS
-
SEA
2 stops35h 25m
Multiple Airlines
Tue 9/83:40 pm
SEA
-
LIS
2 stops21h 05m
Multiple Airlines
Deal found 7/17$885
This Mytrip deal was found by Cheapflights users on 7/17. 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.
Tue 8/256:15 am
LIS
-
SEA
2 stops35h 25m
WestJet
Sun 8/307:00 am
SEA
-
LIS
3 stops30h 45m
WestJet
Deal found 7/17$893
This Mytrip deal was found by Cheapflights users on 7/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:10 am
LIS
-
SEA
2 stops35h 30m
Multiple Airlines
Fri 9/183:40 pm
SEA
-
LIS
2 stops23h 45m
Multiple Airlines
Deal found 7/18$922

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 July 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$809
(Ticket)

One-way from

$419
(Mytrip)

Popular in

July

Cheapest in

December

Average price

$1,382
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. 9% potential increase in price ($105 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 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

Sat 8/29

5:00 am-4:27 pm

1 stop19h 27m

Seattle/Tacoma Intl

Fri 9/11

11:50 am-2:55 pm

2 stops19h 05m

$951
Quickest round-trip

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 8/31

5:00 am-11:37 am

1 stop14h 37m

Seattle/Tacoma Intl

Mon 9/7

6:45 pm-5:50 pm

1 stop15h 05m

$951

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/11

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Mon 1/25

2:15 pm-3:10 pm

1 stop16h 55m

$952

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 9/1

5:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Tue 9/8

6:45 pm-5:50 pm

1 stop15h 05m

$952

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 9/5

5:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Fri 9/18

7:15 am-11:15 am

2 stops20h 00m

$952

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/11

5:00 am-12:00 pm

1 stop15h 00m

Seattle/Tacoma Intl

Mon 1/25

6:50 am-8:10 am

1 stop17h 20m

$984

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 8/25

6:15 am-6:29 pm

2 stops20h 14m

Seattle/Tacoma Intl

Sun 8/30

11:04 pm-8:20 am

2 stops25h 16m

$999

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 9/5

10:25 am-10:43 pm

2 stops20h 18m

Seattle/Tacoma Intl

Fri 9/18

6:50 pm-10:45 pm

1 stop19h 55m

$1,016
Cheapest one-way

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 9/22

6:35 am-10:22 am

2 stops35h 47m

$497

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 9/7

6:25 pm-6:45 pm

2 stops32h 20m

$512

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 18 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 July.
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, December is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $880). Flying from Lisbon to Seattle in July is currently the most expensive (average of $1,382). 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 July 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
7.8
Good
8,478 reviews

Comfort

7.8

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Food

7.2

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
8,478 reviews
Delta
7.8
Good
8,478 reviews

Comfort

7.8

Entertainment

7.8

Crew

8.5

Boarding

8.1

Overall

7.8

Food

7.2

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 19h 27m. Delta provides one of the quickest options available for as low as $951. There are 5199 mi between Lisbon and Seattle.

  • 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 $1,041.

  • 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 $570. British Airways flights start at $582 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, December is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $880). Flying from Lisbon to Seattle in July is currently the most expensive (average of $1,382). 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
Renton
Lacey
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Issaquah

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 July 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,041Average$1,185FlexibilityNo cancel feeOn-timeN/A

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