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$816+ Cheap flights from Bilbao (BIO) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/26. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find 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 October 28, 2025.

This lol.travel deal was found by Cheapflights users on 10/26. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1912:00 pmBIO - SEA
1 stop38h 05mTurkish Airlines
Thu 1/17:00 pmSEA - BIO
1 stop31h 00mTurkish Airlines
Deal found 10/26$846
This KAYAK deal was found by Cheapflights users on 10/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1912:00 pmBIO - SEA
1 stop38h 05mTurkish Airlines
Tue 12/307:00 pmSEA - BIO
1 stop36h 10mTurkish Airlines
Deal found 10/26$885
This Turkish Airlines deal was found by Cheapflights users on 10/26. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1912:00 pmBIO - SEA
1 stop38h 05mTurkish Airlines
Sun 1/47:00 pmSEA - BIO
1 stop31h 00mTurkish Airlines
Deal found 10/26$909
This Turkish Airlines deal was found by Cheapflights users on 10/26. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:45 pmBIO - SEA
2 stops30h 20mMultiple Airlines
Thu 1/17:00 pmSEA - BIO
1 stop31h 00mMultiple Airlines
Deal found 10/26$980
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1912:00 pmBIO - SEA
1 stop38h 05mMultiple Airlines
Wed 12/313:10 pmSEA - BIO
2 stops18h 25mMultiple Airlines
Deal found 10/26$1,098
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:10 amBIO - SEA
2 stops20h 10mMultiple Airlines
Sun 1/43:10 pmSEA - BIO
1 stop34h 40mMultiple Airlines
Deal found 10/26$1,101
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1912:00 pmBIO - SEA
1 stop38h 05mMultiple Airlines
Thu 1/12:00 pmSEA - BIO
1 stop17h 40mMultiple Airlines
Deal found 10/26$1,118
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:10 amBIO - SEA
2 stops20h 10mMultiple Airlines
Fri 1/23:10 pmSEA - BIO
1 stop23h 10mMultiple Airlines
Deal found 10/26$1,119

Cheap 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$816
(United Airlines)

Popular in

August

Cheapest in

February

Average price

$1,048
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
Highest demand for flights based on searches. 15% potential increase in price ($188 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($55 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 28, 2025.
Use the filters below to find and compare flights from Bilbao to Seattle that are best for you.

Fly from

Bilbao

Fly to

Seattle

Route

Depart

Return

Price

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 3/26

6:45 am-1:10 pm

1 stop14h 25m

Seattle/Tacoma Intl

Mon 3/30

8:00 am-1:20 pm

2 stops20h 20m

$816

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 3/26

6:45 am-1:10 pm

1 stop14h 25m

Seattle/Tacoma Intl

Mon 3/30

3:40 pm-5:50 pm

2 stops17h 10m

$820

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sat 12/20

12:00 pm-5:05 pm

1 stop38h 05m

Seattle/Tacoma Intl

Thu 1/1

7:00 pm-11:00 am

1 stop31h 00m

$846

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 3/26

7:25 am-10:16 pm

2 stops22h 51m

Seattle/Tacoma Intl

Mon 3/30

6:00 am-10:25 am

2 stops19h 25m

$847

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 12/19

12:00 pm-5:05 pm

1 stop38h 05m

Seattle/Tacoma Intl

Wed 12/31

7:00 pm-11:00 am

1 stop31h 00m

$885

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 12/19

12:00 pm-5:05 pm

1 stop38h 05m

Seattle/Tacoma Intl

Fri 1/2

7:00 pm-4:10 pm

1 stop36h 10m

$885

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

  • Most accurate provider: When it comes to deals on Bilbao-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bilbao-Seattle flight deals on Cheapflights vs. eDreams >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 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 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.

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?

    United Airlines and Lufthansa can get you from Bilbao to Seattle in just under 14h 25m. Your travel time can differ by up to . Bilbao and Seattle are separated by a distance of 5159 mi.

  • 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
Tukwila
Tacoma
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Federal Way
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Issaquah

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