Lisbon

$264+ Cheap flights from Seattle (SEA) to Lisbon (LIS)

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
oct. 15 — oct. 221
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Lisbon Humberto Delgado are usually found in January or February, booked 29 days in advance, depart on a Monday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Lisbon (LIS). 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 septiembre 15, 2025.

Round-trip from

$632
(Ovago)

One-way from

$264
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$881
From Seattle/Tacoma Intl to Lisbon Humberto Delgado
One-way flight from Seattle/Tacoma Intl to Lisbon Humberto Delgado
Highest demand for flights based on searches. 16% potential increase in price ($192 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Average for round-trip flights in September 2025

Find flight deals from Seattle to Lisbon

Cheapest flights from Seattle to Lisbon
Explore the most affordable flight options available from Seattle to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 15, 2025.

This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/1710:00 amSEA - LIS
2 stops17h 05mMultiple Airlines
jue. 10/302:10 pmLIS - SEA
1 stop31h 10mMultiple Airlines
Deal found 9/15$611
This Delta deal was found by Cheapflights users on 9/15. 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.
vie. 10/171:30 pmSEA - LIS
1 stop20h 20mDelta
jue. 10/305:30 amLIS - SEA
1 stop13h 55mDelta
Deal found 9/15$616
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/82:00 pmSEA - LIS
1 stop24h 50mMultiple Airlines
dom. 11/165:00 amLIS - SEA
2 stops25h 06mMultiple Airlines
Deal found 9/15$626
This Mytrip deal was found by Cheapflights users on 9/15. 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.
mar. 11/118:15 amSEA - LIS
2 stops23h 00mMultiple Airlines
mié. 11/194:00 pmLIS - SEA
3 stops35h 16mMultiple Airlines
Deal found 9/15$627
This FlightHub deal was found by Cheapflights users on 9/15. 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.
lun. 10/67:10 pmSEA - LIS
1 stop20h 25mTurkish Airlines
vie. 10/1711:00 amLIS - SEA
1 stop31h 35mTurkish Airlines
Deal found 9/15$629
This Ovago deal was found by Cheapflights users on 9/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/93:10 pmSEA - LIS
1 stop24h 20mLufthansa
sáb. 11/152:10 pmLIS - SEA
1 stop31h 10mLufthansa
Deal found 9/15$632
This Air France deal was found by Cheapflights users on 9/13. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/81:40 pmSEA - LIS
1 stop13h 40mAir France
dom. 11/166:30 pmLIS - SEA
1 stop26h 50mAir France
Deal found 9/13$643
This Delta deal was found by Cheapflights users on 9/14. 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.
jue. 10/3011:25 amSEA - LIS
2 stops20h 45mDelta
sáb. 11/85:30 amLIS - SEA
2 stops19h 02mDelta
Deal found 9/14$645
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
jue. 10/92:20 pmSEA - LIS
1 stop17h 00mLufthansa
jue. 11/205:00 amLIS - SEA
1 stop15h 10mLufthansa
Deal found 9/13$646
This Air France deal was found by Cheapflights users on 9/13. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/207:30 amSEA - LIS
1 stop16h 30mAir France
vie. 11/285:30 amLIS - SEA
1 stop15h 50mAir France
Deal found 9/13$647
This British Airways deal was found by Cheapflights users on 9/14. 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.
lun. 11/176:50 pmSEA - LIS
1 stop31h 00mBritish Airways
vie. 11/287:05 amLIS - SEA
1 stop17h 50mBritish Airways
Deal found 9/14$648

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Lisbon 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 septiembre 15, 2025.
Use the filters below to find and compare flights from Seattle to Lisbon that are best for you.

Fly from

Seattle

Fly to

Lisbon

Route

Depart

Return

Price

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

sáb. 2/28

7:20 am-8:00 am

1 stop16h 40m

Lisbon Humberto Delgado

vie. 3/6

12:20 pm-11:25 am

1 stop31h 05m

$653

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

jue. 11/20

11:27 am-8:55 am

1 stop13h 28m

Lisbon Humberto Delgado

mar. 12/2

10:00 am-10:25 am

1 stop32h 25m

$655

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

jue. 11/20

2:00 pm-3:05 pm

1 stop17h 05m

Lisbon Humberto Delgado

jue. 11/27

5:00 am-12:10 pm

1 stop15h 10m

$656

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

dom. 10/19

7:19 am-8:00 am

1 stop16h 41m

Lisbon Humberto Delgado

lun. 10/27

5:30 am-7:00 pm

2 stops20h 30m

$662

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

jue. 11/20

11:27 am-8:55 am

1 stop13h 28m

Lisbon Humberto Delgado

mié. 11/26

10:00 am-8:06 pm

1 stop18h 06m

$665

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

dom. 11/9

10:40 am-4:30 pm

2 stops21h 50m

Lisbon Humberto Delgado

sáb. 11/15

7:05 am-10:25 pm

2 stops23h 20m

$665

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

lun. 10/6

7:19 am-8:00 am

1 stop16h 41m

Lisbon Humberto Delgado

mar. 10/14

5:40 am-8:16 pm

2 stops22h 36m

$677

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 10/1

9:40 am-2:50 pm

2 stops21h 10m

Lisbon Humberto Delgado

jue. 10/9

10:00 am-8:16 pm

1 stop18h 16m

$684

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 10/1

9:40 am-2:50 pm

2 stops21h 10m

Lisbon Humberto Delgado

mié. 10/8

10:00 am-8:16 pm

1 stop18h 16m

$684

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 10/1

9:40 am-2:50 pm

2 stops21h 10m

Lisbon Humberto Delgado

vie. 10/10

5:40 am-11:15 am

1 stop13h 35m

$685

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 22 results
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Best time to book a flight from Seattle to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Seattle 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 Seattle to Lisbon

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Lisbon. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Lisbon, you should look to book at least 29 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Lisbon?

Currently, January is the cheapest month in which you can book a flight from Seattle to Lisbon (average of $612). Flying from Seattle to Lisbon in June is currently the most expensive (average of $1,127). 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 SEA to LIS?

Find hourly flight availability from Seattle to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 15, 2025.

When flying from Seattle to Lisbon, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 11% versus a flight at noon.

What is the cheapest day to fly from Seattle to Lisbon?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Lisbon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Lisbon flight should consider departing on Monday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated septiembre 15, 2025.
Get a feel of what it's like to fly with Delta, Air France, and United Airlines from Seattle to Lisbon by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

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!
8.0
Very good
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

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!
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

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!
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

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!
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

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!
8.0
Very good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

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 Seattle to Lisbon. 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 Seattle to Lisbon?

    Departing from Seattle to Lisbon will take you 16h 40m. The distance from Seattle to Lisbon is about 5199 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Seattle to Lisbon is Icelandair. Our recent data shows that you can find tickets from as low as $466 on this airline. Additional options worth looking into are Air Canada and British Airways, starting at $543 and $563 round-trip. Icelandair is currently priced 50% below the average price you’ll pay for this route.

  • Where are the most common layover locations when flying from Seattle to Lisbon?

  • What are some popular things to do or see while on a layover in London?

    The majority of London visitors spend their time at Hyde Park, Buckingham Palace, and Piccadilly Circus. Travelers on a layover in London can visit Hyde Park, Buckingham Palace, and Piccadilly Circus, by traveling 12.5 mi, 13.7 mi, and 14.1 mi, respectively after landing at London Heathrow. Travelers can rent a car at London Heathrow for an average daily rate of $41 to make sightseeing during their layover a little easier.

  • What are some popular points of interest to see during a layover in Paris?

    Eiffel Tower, Champs-Elysées, and Louvre Museum are currently the most popular points of interest in Paris at the moment. Those on a layover in Paris interested in visiting Eiffel Tower, Champs-Elysées, or Louvre Museum can do so by traveling 15.8 mi, 14.7 mi, and 14.3 mi, respectively from Paris Charles de Gaulle. Those landing in Paris looking to spend some time exploring during their layover can rent a car for about $37 per day.

  • Where are the least popular layover locations for Seattle to Lisbon flights?

  • Can I find deals for flights from Seattle to Lisbon that include hotel bookings?

    Yes. In addition to deals on Seattle to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Lisbon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Lisbon.

  • Can I find deals for business class flights from Seattle to Lisbon?

    Yes. Cheapflights offers flight deals from Seattle to Lisbon 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 Seattle to Lisbon?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Lisbon (average of $612). Flying from Seattle to Lisbon in June is currently the most expensive (average of $1,127). 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
Sintra
Fátima
Oeiras
Beja
Nazaré
Ericeira
Costa da Caparica
Torres Vedras
Sesimbra
Colares

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Seattle to Lisbon

Discover the top 10 airlines that operate flights from Seattle to Lisbon. 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$466Average$644FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$543Average$1,032FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$563Average$869FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$573Average$971FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$603Average$917FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$610Average$956FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$611Average$866FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$629Average$1,056FlexibilityNo cancel feeOn-time71%
KLMCheapest$632Average$867FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$652Average$828FlexibilityNo cancel feeOn-time77%

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