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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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Jul 11 — Jul 181
Sat 7/11
Sat 7/18
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 June 11, 2026.

This Mytrip deal was found by Cheapflights users on 6/7. 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.
Wed 7/221:50 pm
BIO
-
SEA
2 stops30h 55m
Multiple Airlines
Wed 7/293:40 pm
SEA
-
BIO
3 stops22h 15m
Multiple Airlines
Deal found 6/7$776
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:45 am
BIO
-
SEA
1 stop18h 50m
Multiple Airlines
Sun 9/131:30 pm
SEA
-
BIO
1 stop19h 00m
Multiple Airlines
Deal found 6/10$818
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:45 am
BIO
-
SEA
1 stop18h 50m
Delta
Sun 9/137:30 am
SEA
-
BIO
2 stops18h 45m
Delta
Deal found 6/11$823
This Delta deal was found by Cheapflights users on 6/6. 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 12/116:50 am
BIO
-
SEA
1 stop14h 00m
Delta
Sun 1/1011:15 am
SEA
-
BIO
2 stops21h 05m
Delta
Deal found 6/6$882
This Iberia deal was found by Cheapflights users on 6/7. 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.
Wed 10/141:30 pm
BIO
-
SEA
2 stops19h 45m
Iberia
Sun 10/187:40 am
SEA
-
BIO
2 stops20h 05m
Iberia
Deal found 6/7$891

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 June 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$776
(Mytrip)

One-way from

$428
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$1,012
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 ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 11, 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

Wed 9/2

6:45 am-4:35 pm

1 stop18h 50m

Seattle/Tacoma Intl

Sun 9/13

7:30 am-11:15 am

2 stops18h 45m

$823

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 10/14

6:45 am-12:15 am

2 stops26h 30m

Seattle/Tacoma Intl

Sun 10/18

7:40 am-12:45 pm

2 stops20h 05m

$893

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

$909

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 10/14

6:50 am-12:20 pm

1 stop14h 30m

Seattle/Tacoma Intl

Sun 10/18

6:50 pm-11:25 pm

1 stop19h 35m

$909
Quickest round-trip

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 10/9

6:45 am-12:20 pm

1 stop14h 35m

Seattle/Tacoma Intl

Thu 10/22

6:50 pm-5:55 pm

1 stop14h 05m

$910
Cheapest one-way

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 10/16

1:25 pm-5:10 pm

3 stops36h 45m

$598

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sun 10/18

1:05 pm-11:35 am

2 stops31h 30m

$602

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sun 10/18

6:10 pm-5:10 pm

1 stop32h 00m

$655

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 10/16

6:10 pm-5:10 pm

1 stop32h 00m

$679

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 7/17

3:05 pm-9:40 am

3 stops51h 35m

$694

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/6

Showing 1-10 of 12 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?

    Delta, Iberia, and United Airlines can get you from Bilbao to Seattle in just under 14h 05m. Your travel time can differ by up to 12h 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
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Marysville
Shoreline

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