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$350+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This Air Canada deal was found by Cheapflights users on 1/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:50 am
BIO
-
SEA
2 stops24h 01m
Multiple Airlines
Mon 4/2010:10 am
SEA
-
BIO
2 stops28h 15m
Multiple Airlines
Deal found 1/27$696
This Iberia deal was found by Cheapflights users on 1/24. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/49:35 pm
BIO
-
SEA
2 stops33h 24m
Iberia
Sun 2/86:00 am
SEA
-
BIO
2 stops17h 30m
Iberia
Deal found 1/24$726
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:45 am
BIO
-
SEA
1 stop14h 25m
United Airlines
Fri 3/204:10 pm
SEA
-
BIO
1 stop23h 10m
United Airlines
Deal found 1/26$783
This Cheapflightsfares deal was found by Cheapflights users on 1/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/117:15 am
BIO
-
SEA
2 stops20h 31m
Lufthansa
Mon 4/202:10 pm
SEA
-
BIO
1 stop23h 50m
Lufthansa
Deal found 1/27$822
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1112:10 pm
BIO
-
SEA
1 stop38h 05m
Turkish Airlines
Mon 4/207:10 pm
SEA
-
BIO
1 stop37h 10m
Turkish Airlines
Deal found 1/27$872
This Turkish Airlines deal was found by Cheapflights users on 1/24. 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.
Wed 2/45:10 pm
BIO
-
SEA
1 stop32h 55m
Turkish Airlines
Sun 2/87:00 pm
SEA
-
BIO
1 stop31h 00m
Turkish Airlines
Deal found 1/24$927
This United Airlines deal was found by Cheapflights users on 1/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/41:40 pm
BIO
-
SEA
2 stops54h 52m
United Airlines
Sun 2/812:57 pm
SEA
-
BIO
3 stops38h 53m
United Airlines
Deal found 1/24$958

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 January 27, 2026.

Round-trip from

$696
(Air Canada)

One-way from

$350
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$1,327
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. 10% potential increase in price ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 27, 2026.
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

Sat 4/11

6:50 am-9:51 pm

2 stops24h 01m

Seattle/Tacoma Intl

Mon 4/20

10:10 am-11:25 pm

2 stops28h 15m

$696

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 3/13

6:45 am-1:10 pm

1 stop14h 25m

Seattle/Tacoma Intl

Fri 3/20

4:10 pm-11:20 pm

1 stop23h 10m

$783

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sat 4/11

7:15 am-6:46 pm

2 stops20h 31m

Seattle/Tacoma Intl

Mon 4/20

2:10 pm-11:00 pm

1 stop23h 50m

$822

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sat 4/11

12:10 pm-5:15 pm

1 stop38h 05m

Seattle/Tacoma Intl

Mon 4/20

7:10 pm-5:20 pm

1 stop37h 10m

$872

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 3/30

7:00 am-5:10 pm

2 stops19h 10m

Seattle/Tacoma Intl

Mon 3/30

8:00 pm-5:55 pm

2 stops36h 55m

$1,607

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 3/16

10:05 pm-5:09 pm

2 stops51h 04m

$350

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 5/14

3:30 pm-5:42 pm

2 stops59h 12m

$350

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 5/15

8:55 am-5:42 pm

2 stops41h 47m

$371

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 5/11

7:00 am-5:42 pm

2 stops43h 42m

$381

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 3/11

10:20 pm-5:09 pm

2 stops50h 49m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 16 results
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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

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

Currently, February is the cheapest month in which you can book a flight from Bilbao to Seattle (average of $615). Flying from Bilbao to Seattle in January is currently the most expensive (average of $1,181). 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.

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 6h 06m. 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.

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

    Currently, February is the cheapest month in which you can book a flight from Bilbao to Seattle (average of $615). Flying from Bilbao to Seattle in January is currently the most expensive (average of $1,181). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
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