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$356+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
déc. 4 — déc. 111
jeu. 12/4
jeu. 12/11
1 adult, Economy
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Cheapflights Tip: The best prices from Lisbon Humberto Delgado to Seattle/Tacoma Intl are usually found in April or May, booked 49 days in advance, depart on a Wednesday or Thursday and return on a Monday

Find 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 novembre 4, 2025.

This Flightnetwork deal was found by Cheapflights users on 11/3. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/2510:55 amLIS - SEA
2 stops35h 36mAir Canada
mer. 1/78:10 amSEA - LIS
1 stop17h 10mAir Canada
Deal found 11/3$701
This Mytrip deal was found by Cheapflights users on 11/3. 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.
ven. 12/55:00 amLIS - SEA
2 stops25h 16mAir Canada
lun. 12/88:00 pmSEA - LIS
3 stops29h 20mAir Canada
Deal found 11/3$746
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
mer. 12/37:35 pmLIS - SEA
2 stops47h 02mMultiple Airlines
mer. 12/102:35 pmSEA - LIS
1 stop21h 45mMultiple Airlines
Deal found 11/3$748
This Mytrip deal was found by Cheapflights users on 11/3. 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.
ven. 12/511:20 amLIS - SEA
1 stop18h 56mMultiple Airlines
lun. 12/88:00 pmSEA - LIS
3 stops29h 20mMultiple Airlines
Deal found 11/3$773
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
ven. 12/59:00 amLIS - SEA
1 stop18h 18mMultiple Airlines
dim. 12/77:55 amSEA - LIS
2 stops15h 50mMultiple Airlines
Deal found 11/3$820
This United Airlines deal was found by Cheapflights users on 11/4. 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.
jeu. 12/185:00 amLIS - SEA
1 stop15h 10mUnited Airlines
mar. 12/308:00 amSEA - LIS
1 stop18h 15mUnited Airlines
Deal found 11/4$853
This Cheapflightsfares deal was found by Cheapflights users on 11/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/55:00 amLIS - SEA
1 stop15h 10mLufthansa
lun. 12/82:00 pmSEA - LIS
1 stop16h 50mLufthansa
Deal found 11/3$857

Cheap 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 novembre 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$701
(Flightnetwork)

One-way from

$405
(Kiwi.com)

Popular in

July

Cheapest in

April

Average price

$1,079
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. 13% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 novembre 4, 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

mer. 12/3

6:10 am-10:16 pm

2 stops24h 06m

Seattle/Tacoma Intl

mer. 12/10

5:50 am-8:55 am

2 stops19h 05m

$776

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

ven. 12/5

9:00 am-7:18 pm

1 stop18h 18m

Seattle/Tacoma Intl

dim. 12/7

7:55 am-7:45 am

2 stops15h 50m

$820

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

lun. 3/23

5:00 am-12:35 pm

1 stop14h 35m

Seattle/Tacoma Intl

lun. 4/6

6:30 pm-5:50 pm

1 stop15h 20m

$825

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

ven. 12/5

9:00 am-10:16 pm

1 stop21h 16m

Seattle/Tacoma Intl

lun. 12/8

8:00 pm-7:55 am

2 stops27h 55m

$830

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

jeu. 3/26

5:00 am-1:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

lun. 3/30

8:00 am-10:30 am

1 stop18h 30m

$853

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

jeu. 3/26

5:00 am-1:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

lun. 3/30

7:00 am-8:20 am

2 stops17h 20m

$854

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

ven. 12/5

5:00 am-9:00 pm

3 stops24h 00m

Seattle/Tacoma Intl

dim. 12/7

8:40 am-8:10 am

2 stops15h 30m

$859

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

lun. 12/1

6:30 pm-11:25 am

1 stop24h 55m

Seattle/Tacoma Intl

lun. 12/8

2:05 pm-5:30 pm

1 stop19h 25m

$870

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

jeu. 12/25

10:55 am-9:31 am

2 stops30h 36m

Seattle/Tacoma Intl

mer. 1/7

8:00 pm-9:20 am

2 stops29h 20m

$873

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

jeu. 12/25

10:55 am-9:31 am

2 stops30h 36m

Seattle/Tacoma Intl

lun. 1/5

8:00 pm-9:20 am

2 stops29h 20m

$881

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 19 results
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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 November.
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

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

Use this chart to determine the optimal time to book a round-trip flight from Lisbon to Seattle. Price data was last updated on October 31, 2025.

The price you pay for your flight from Lisbon to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $692). 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 novembre 4, 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 novembre 4, 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
8,002 reviews

Food

7.3

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
8,002 reviews
Delta
7.9
Good
8,002 reviews

Food

7.3

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
1,482 reviews
Delta
7.9
Good
8,002 reviews

Food

7.3

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
8,999 reviews
Delta
7.9
Good
8,002 reviews

Food

7.3

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,496 reviews
Delta
7.9
Good
8,002 reviews

Food

7.3

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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.

  • How long is the flight from Lisbon to Seattle?

    A quick flight from Lisbon to Seattle can take about 14h 35m. Delta provides one of the quickest options available for as low as $825. There are 5199 mi between Lisbon and Seattle.

  • 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 24% lower than the current average price of a flight leaving 3 months from now.

  • 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 $692). 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
SeaTac
Tukwila
Tacoma
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Federal Way
Cle Elum
Marysville
Puyallup
Chehalis
Fife
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.
Porto to Seattle flights
Lisbon to Portland 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 novembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$720Average$1,016FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$738Average$1,236FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$762Average$1,159FlexibilityNo cancel feeOn-time77%
DeltaCheapest$775Average$1,040FlexibilityNo cancel feeOn-timeN/A

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