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$428+ Cheap flights from Bilbao (BIO) 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 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
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Cheap flight deals from Bilbao to Seattle

Cheapest flights from Bilbao to Seattle
Explore the most affordable flight options available from Bilbao to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.

This Turkish Airlines deal was found by Cheapflights users on 4/24. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2712:10 pm
BIO
-
SEA
1 stop38h 05m
Turkish Airlines
Sat 5/27:10 pm
SEA
-
BIO
1 stop31h 00m
Turkish Airlines
Deal found 4/24$842
This Gotogate deal was found by Cheapflights users on 4/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:50 am
BIO
-
SEA
1 stop14h 30m
Lufthansa
Fri 6/126:50 pm
SEA
-
BIO
1 stop19h 35m
Lufthansa
Deal found 4/24$870
This Cheapflightsfares deal was found by Cheapflights users on 4/25. 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.
Tue 6/96:50 am
BIO
-
SEA
1 stop14h 30m
Lufthansa
Tue 6/163:00 pm
SEA
-
BIO
2 stops23h 25m
Lufthansa
Deal found 4/25$889
This Gotogate deal was found by Cheapflights users on 4/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:50 am
BIO
-
SEA
1 stop14h 30m
Lufthansa
Wed 6/172:10 pm
SEA
-
BIO
1 stop23h 15m
Lufthansa
Deal found 4/26$918
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/176:50 am
BIO
-
SEA
2 stops24h 52m
United Airlines
Mon 9/2110:47 pm
SEA
-
BIO
2 stops26h 58m
United Airlines
Deal found 4/27$920
This KLM deal was found by Cheapflights users on 4/24. 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.
Wed 9/26:45 am
BIO
-
SEA
1 stop14h 02m
Multiple Airlines
Sun 9/136:45 pm
SEA
-
BIO
1 stop13h 45m
Multiple Airlines
Deal found 4/24$923
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Wed 9/26:50 am
BIO
-
SEA
1 stop14h 05m
United Airlines
Sun 9/136:50 pm
SEA
-
BIO
1 stop19h 35m
United Airlines
Deal found 4/23$924
This Sembo deal was found by Cheapflights users on 4/26. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:50 am
BIO
-
SEA
2 stops16h 30m
Multiple Airlines
Wed 6/177:20 pm
SEA
-
BIO
2 stops43h 05m
Multiple Airlines
Deal found 4/26$928

Find flight deals from Bilbao to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) 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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$870
(Gotogate)

One-way from

$428
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$1,256
Provider with most accurate pricing for Bilbao-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bilbao-Seattle/Tacoma Intl flights.
Search Deals
From Bilbao to Seattle/Tacoma Intl
Search Deals
One-way flight from Bilbao to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bilbao 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 April 28, 2026.
Use the filters below to find and compare flights from Bilbao to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Tue 6/9

6:50 am-12:20 pm

1 stop14h 30m

Seattle/Tacoma Intl

Tue 6/16

3:00 pm-11:25 pm

2 stops23h 25m

$889

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 9/17

6:50 am-11:55 am

1 stop14h 05m

Seattle/Tacoma Intl

Mon 9/21

10:47 pm-10:45 am

2 stops26h 58m

$920
Quickest round-trip

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 9/2

6:45 am-11:47 am

1 stop14h 02m

Seattle/Tacoma Intl

Sun 9/13

6:45 pm-5:30 pm

1 stop13h 45m

$923

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 9/2

6:50 am-11:55 am

1 stop14h 05m

Seattle/Tacoma Intl

Sun 9/13

6:50 pm-11:25 pm

1 stop19h 35m

$923
Cheapest one-way

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 6/17

6:05 pm-5:10 pm

1 stop32h 05m

$687

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sat 8/22

12:10 pm-5:15 pm

1 stop38h 05m

$824

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 8/6

6:45 am-11:50 pm

2 stops26h 05m

$836

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sun 8/16

6:20 pm-5:15 pm

1 stop31h 55m

$859

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 8/19

9:35 pm-8:52 pm

2 stops32h 17m

$860
Quickest one-way

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 8/5

6:45 am-8:52 pm

2 stops23h 07m

$869

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 11 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Bilbao-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bilbao-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bilbao-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bilbao-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub 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 Bilbao-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 Bilbao to Seattle

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

How much does it cost to fly round-trip from Bilbao to Seattle?

Related info for your journey

Find useful and relevant information for your journey from Bilbao 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 Bilbao to Seattle?

    Lufthansa and United Airlines can get you from Bilbao to Seattle in just under 14h 05m. Your travel time can differ by up to 25m. Bilbao and Seattle are separated by a distance of 5159 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Bilbao 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.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline

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