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$360+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheapflights Tip: The best prices from Lisbon Humberto Delgado to Seattle/Tacoma Intl are usually found in December or April, booked 50 days in advance, depart on a Wednesday or Thursday and return on a Monday

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 June 30, 2025.

Round-trip from

$729
(Kiwi.com)

One-way from

$360
(Kiwi.com)

Popular in

August

Cheapest in

December

Average price

$1,112
From Lisbon Humberto Delgado to Seattle/Tacoma Intl
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One-way flight from Lisbon Humberto Delgado to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 10% potential increase in price ($107 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/29. 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.
Wed 9/176:30 amLIS - SEA
2 stops45h 02mMultiple Airlines
Wed 10/88:30 amSEA - LIS
1 stop18h 20mMultiple Airlines
Deal found 6/29$729
This Delta deal was found by Cheapflights users on 6/28. 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.
Fri 10/175:00 amLIS - SEA
1 stop14h 50mDelta
Wed 10/227:20 amSEA - LIS
2 stops19h 55mDelta
Deal found 6/28$837
This Booking.com deal was found by Cheapflights users on 6/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2511:05 amLIS - SEA
1 stop19h 21mBritish Airways
Sun 9/71:30 pmSEA - LIS
1 stop25h 35mBritish Airways
Deal found 6/30$839
This KLM deal was found by Cheapflights users on 6/29. 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 11/183:25 pmLIS - SEA
1 stop28h 25mKLM
Thu 11/276:00 amSEA - LIS
2 stops18h 00mKLM
Deal found 6/29$846
This United Airlines deal was found by Cheapflights users on 6/29. 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 9/185:05 amLIS - SEA
2 stops17h 11mUnited Airlines
Thu 10/97:04 pmSEA - LIS
2 stops29h 16mUnited Airlines
Deal found 6/29$862
This Air Canada deal was found by Cheapflights users on 6/29. 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.
Sun 11/165:00 amLIS - SEA
2 stops25h 06mAir Canada
Mon 11/2410:05 amSEA - LIS
2 stops39h 15mAir Canada
Deal found 6/29$872
This Lufthansa deal was found by Cheapflights users on 6/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/175:00 amLIS - SEA
1 stop15h 10mLufthansa
Sun 11/303:40 pmSEA - LIS
2 stops33h 40mLufthansa
Deal found 6/29$875
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Mon 8/2511:05 amLIS - SEA
2 stops18h 55mAmerican Airlines
Sun 9/79:12 amSEA - LIS
2 stops15h 53mAmerican Airlines
Deal found 6/30$884
This SWISS deal was found by Cheapflights users on 6/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:55 amLIS - SEA
2 stops20h 41mSWISS
Wed 10/223:28 pmSEA - LIS
2 stops23h 52mSWISS
Deal found 6/30$888
This oojo deal was found by Cheapflights users on 6/28. 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 9/165:55 amLIS - SEA
1 stop19h 20mTurkish Airlines
Wed 9/177:10 pmSEA - LIS
1 stop36h 20mTurkish Airlines
Deal found 6/28$919

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 30, 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

Wed 9/17

6:30 am-7:32 pm

2 stops45h 02m

Seattle/Tacoma Intl

Wed 10/8

8:30 am-10:50 am

1 stop18h 20m

$729

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 10/17

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Wed 10/22

11:45 am-2:50 pm

2 stops19h 05m

$837

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 8/25

11:05 am-10:26 pm

1 stop19h 21m

Seattle/Tacoma Intl

Sun 9/7

1:30 pm-11:05 pm

1 stop25h 35m

$839

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 11/18

3:25 pm-11:50 am

1 stop28h 25m

Seattle/Tacoma Intl

Thu 11/27

6:00 am-8:00 am

2 stops18h 00m

$846

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 9/18

5:05 am-2:16 pm

2 stops17h 11m

Seattle/Tacoma Intl

Thu 10/9

7:04 pm-8:20 am

2 stops29h 16m

$862

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 11/16

5:00 am-10:06 pm

2 stops25h 06m

Seattle/Tacoma Intl

Mon 11/24

10:05 am-9:20 am

2 stops39h 15m

$872

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 11/17

5:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Sun 11/30

3:40 pm-9:20 am

2 stops33h 40m

$875

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 8/25

11:05 am-10:00 pm

2 stops18h 55m

Seattle/Tacoma Intl

Sun 9/7

9:12 am-9:05 am

2 stops15h 53m

$884

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 10/17

5:55 am-6:36 pm

2 stops20h 41m

Seattle/Tacoma Intl

Wed 10/22

3:28 pm-11:20 pm

2 stops23h 52m

$888

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 9/16

5:55 am-5:15 pm

1 stop19h 20m

Seattle/Tacoma Intl

Wed 9/17

7:10 pm-3:30 pm

1 stop36h 20m

$919

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 11 results
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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 June 27, 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 50 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, January is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $238). Flying from Lisbon to Seattle in July is currently the most expensive (average of $391). 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 June 30, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 18% on flights from Lisbon to Seattle by exploring options for tickets in the afternoon.

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 30, 2025.
Read through reviews of airlines operating flights from Lisbon to Seattle, such as Delta, KLM, and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,365 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Turkish Airlines
7.3
Good
3,884 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 Delta is currently your cheapest option to Seattle, with prices starting at $837. Additional round-trip tickets that might be worth considering are offered by British Airways and KLM, with the lowest prices starting at $839 and $846, respectively. Delta is priced at 10% 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, January is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $238). Flying from Lisbon to Seattle in July is currently the most expensive (average of $391). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Kirkland
Aberdeen
Renton
Shelton
Silverdale

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 5 airlines flying from Lisbon to Seattle

Discover the top 5 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$717Average$823FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$720Average$1,080FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$738Average$867FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$762Average$1,111FlexibilityNo cancel feeOn-time77%
DeltaCheapest$775Average$859FlexibilityNo cancel feeOn-timeN/A

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