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$313+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 51 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 12, 2025.

Round-trip from

$709
(FlightHub)

One-way from

$313
(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 ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 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 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:15 amLIS - SEA
1 stop14h 45mMultiple Airlines
Tue 10/287:20 amSEA - LIS
2 stops25h 45mMultiple Airlines
Deal found 6/9$709
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2211:05 amLIS - SEA
1 stop18h 39mAmerican Airlines
Wed 10/297:50 pmSEA - LIS
1 stop19h 00mAmerican Airlines
Deal found 6/9$758
This British Airways deal was found by Cheapflights users on 6/11. 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.
Fri 10/174:30 pmLIS - SEA
1 stop27h 05mBritish Airways
Wed 10/221:30 pmSEA - LIS
1 stop20h 25mBritish Airways
Deal found 6/11$759
This Delta deal was found by Cheapflights users on 6/12. 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 10/226:00 amSEA - LIS
2 stops21h 15mDelta
Deal found 6/12$761
This Air Canada deal was found by Cheapflights users on 6/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:05 amLIS - SEA
2 stops36h 16mAir Canada
Wed 10/298:20 pmSEA - LIS
2 stops30h 00mAir Canada
Deal found 6/9$848
This SWISS deal was found by Cheapflights users on 6/10. 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 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 10/221:45 pmSEA - LIS
2 stops17h 00mSWISS
Deal found 6/10$869
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub 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 6/12$905
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Tue 6/175:05 amLIS - SEA
2 stops21h 28mUnited Airlines
Tue 6/246:25 amSEA - LIS
3 stops20h 05mUnited Airlines
Deal found 6/12$1,010
This KLM deal was found by Cheapflights users on 6/12. 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.
Sat 8/167:30 pmLIS - SEA
1 stop24h 05mKLM
Sun 9/71:55 pmSEA - LIS
1 stop20h 45mKLM
Deal found 6/12$1,014
This AirNGo deal was found by Cheapflights users on 6/12. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/96:50 pmLIS - SEA
1 stop24h 25mAir France
Thu 8/286:40 pmSEA - LIS
1 stop19h 45mAir France
Deal found 6/12$1,075
This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2312:45 pmLIS - SEA
1 stop30h 00mVirgin Atlantic
Sun 7/610:15 pmSEA - LIS
1 stop28h 30mVirgin Atlantic
Deal found 6/10$1,138
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/239:20 pmLIS - SEA
2 stops29h 00mIberia
Mon 7/78:20 pmSEA - LIS
2 stops19h 05mIberia
Deal found 6/11$1,265

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 12, 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 10/22

7:15 am-2:00 pm

1 stop14h 45m

Seattle/Tacoma Intl

Tue 10/28

7:20 am-4:05 pm

2 stops25h 45m

$709

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 10/22

11:05 am-9:44 pm

1 stop18h 39m

Seattle/Tacoma Intl

Wed 10/29

7:50 pm-9:50 pm

1 stop19h 00m

$758

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 10/17

4:30 pm-11:35 am

1 stop27h 05m

Seattle/Tacoma Intl

Wed 10/22

1:30 pm-5:55 pm

1 stop20h 25m

$759

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

6:00 am-11:15 am

2 stops21h 15m

$761

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 10/20

5:05 am-9:21 am

2 stops36h 16m

Seattle/Tacoma Intl

Wed 10/29

8:20 pm-9:20 am

2 stops30h 00m

$848

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

1:45 pm-2:45 pm

2 stops17h 00m

$869

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

$904

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 8/16

7:30 pm-11:35 am

1 stop24h 05m

Seattle/Tacoma Intl

Sun 9/7

1:55 pm-6:40 pm

1 stop20h 45m

$1,014

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 6/23

12:50 pm-10:51 am

1 stop30h 01m

Seattle/Tacoma Intl

Sun 7/6

7:20 am-9:20 am

1 stop18h 00m

$1,051

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 8/9

6:50 pm-11:15 am

1 stop24h 25m

Seattle/Tacoma Intl

Thu 8/28

6:40 pm-10:25 pm

1 stop19h 45m

$1,075

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 24 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 9, 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 12, 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Lisbon to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

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
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

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!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

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!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

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
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

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 American Airlines is currently your cheapest option to Seattle, with prices starting at $758. Additional round-trip tickets that might be worth considering are offered by British Airways and Delta, with the lowest prices starting at $759 and $761, respectively. American Airlines is priced at 18% 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 Icelandair, which is currently one of the cheapest options available, starting at $519. Aer Lingus flights start at $603 while deals on Turkish Airlines start at $675 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, 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
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
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 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$717Average$823FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$720Average$1,074FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$738Average$867FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$762Average$1,067FlexibilityNo cancel feeOn-time77%
DeltaCheapest$775Average$859FlexibilityNo cancel feeOn-timeN/A

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