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$397+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
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 December 10, 2025.

This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:15 amLIS - SEA
2 stops20h 44mUnited Airlines
Tue 12/3011:15 pmSEA - LIS
1 stop27h 00mUnited Airlines
Deal found 12/9$918
This Air Canada deal was found by Cheapflights users on 12/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:55 amLIS - SEA
2 stops30h 36mAir Canada
Tue 12/305:50 amSEA - LIS
2 stops19h 30mAir Canada
Deal found 12/8$920
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1411:55 amLIS - SEA
1 stop16h 59mUnited Airlines
Sat 12/207:00 amSEA - LIS
2 stops19h 15mUnited Airlines
Deal found 12/10$1,718
This KLM deal was found by Cheapflights users on 12/10. 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.
Sun 12/145:00 amLIS - SEA
1 stop14h 50mMultiple Airlines
Sat 12/201:40 pmSEA - LIS
1 stop19h 50mMultiple Airlines
Deal found 12/10$1,812
This oojo deal was found by Cheapflights users on 12/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:55 amLIS - SEA
1 stop19h 10mTurkish Airlines
Wed 1/147:00 pmSEA - LIS
1 stop20h 00mTurkish Airlines
Deal found 12/8$3,171
This oojo deal was found by Cheapflights users on 12/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/910:10 pmLIS - SEA
2 stops44h 25mMultiple Airlines
Wed 1/147:55 amSEA - LIS
2 stops19h 55mMultiple Airlines
Deal found 12/8$3,705
This Delta deal was found by Cheapflights users on 12/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:00 amLIS - SEA
1 stop14h 50mDelta
Wed 1/147:10 amSEA - LIS
2 stops23h 25mDelta
Deal found 12/8$4,520
This Cathay Pacific deal was found by Cheapflights users on 12/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/182:40 pmLIS - SEA
3 stops38h 19mMultiple Airlines
Tue 12/305:59 pmSEA - LIS
3 stops41h 16mMultiple Airlines
Deal found 12/10$16,147

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 December 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$747
(Kiwi.com)

One-way from

$397
(Kiwi.com)

Popular in

July

Cheapest in

April

Average price

$959
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. 15% potential increase in price ($174 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 10, 2025.
Use the filters below to find and compare flights from Lisbon to Seattle that are best for you.

Fly from

Lisbon

Fly to

Seattle

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 1/15

3:20 pm-2:38 pm

2 stops55h 18m

Seattle/Tacoma Intl

Wed 1/28

2:35 pm-8:20 pm

1 stop21h 45m

$747

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 1/23

7:05 am-5:00 pm

2 stops17h 55m

Seattle/Tacoma Intl

Fri 1/30

2:35 pm-11:10 pm

3 stops24h 35m

$827

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 1/21

7:00 pm-11:22 pm

2 stops36h 22m

Seattle/Tacoma Intl

Sat 1/24

11:17 am-4:05 pm

2 stops44h 48m

$841

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 1/24

1:15 pm-10:22 am

3 stops53h 07m

$397

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 2/6

7:25 pm-2:19 pm

2 stops50h 54m

$408

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 1/14

5:30 pm-10:22 am

2 stops48h 52m

$437

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 2/23

9:45 am-8:16 pm

3 stops42h 31m

$443

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 2/22

8:35 am-2:19 pm

2 stops37h 44m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Lisbon-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, April is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $693). Flying from Lisbon to Seattle in July is currently the most expensive (average of $970). 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.

What is the cheapest time of day to fly from LIS to SEA?

Find hourly flight availability from Lisbon to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 10, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 45% on flights from Lisbon to Seattle by exploring options for tickets in the evening.

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 December 10, 2025.
Read through reviews of airlines operating flights from Lisbon to Seattle, such as Delta, Air France, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air France
7.4
Good
1,502 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,093 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,573 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • What are the cheapest airlines flying from Lisbon to Seattle round-trip?

    Flying on British Airways is currently your cheapest option to Seattle, with prices starting at $720. Additional round-trip tickets that might be worth considering are offered by United Airlines and Air France, with the lowest prices starting at $738 and $762, respectively. British Airways is priced at 23% lower than the current average price of a flight leaving 3 months from now.

  • 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 $556. British Airways flights start at $561 while deals on Turkish Airlines start at $583 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, April is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $693). Flying from Lisbon to Seattle in July is currently the most expensive (average of $970). 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
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

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 4 airlines flying from Lisbon to Seattle

Discover the top 4 airlines 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 December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$720Average$932FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$738Average$1,236FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$762Average$1,159FlexibilityNo cancel feeOn-time77%
DeltaCheapest$775Average$1,077FlexibilityNo cancel feeOn-timeN/A

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