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$405+ Cheap flights from Bilbao (BIO) to Washington

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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Bilbao to Washington

Cheapest flights from Bilbao to Washington
Explore the most affordable flight options available from Bilbao to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This KLM deal was found by Cheapflights users on 12/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:55 amBIO - SEA
1 stop32h 55mMultiple Airlines
Thu 1/159:25 amSEA - BIO
2 stops17h 05mMultiple Airlines
Deal found 12/15$837
This Delta deal was found by Cheapflights users on 12/15. 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.
Sun 12/286:50 amBIO - SEA
1 stop14h 00mDelta
Sat 2/281:45 pmSEA - BIO
2 stops18h 35mDelta
Deal found 12/15$855
This KLM deal was found by Cheapflights users on 12/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2811:55 amBIO - SEA
1 stop32h 55mKLM
Sat 2/281:40 pmSEA - BIO
1 stop23h 45mKLM
Deal found 12/15$856
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:25 amBIO - SEA
1 stop14h 55mLufthansa
Thu 1/82:00 pmSEA - BIO
1 stop17h 40mLufthansa
Deal found 12/15$921
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:50 pmBIO - SEA
2 stops21h 09mUnited Airlines
Thu 1/85:00 amSEA - BIO
2 stops31h 55mUnited Airlines
Deal found 12/15$939
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:25 amBIO - SEA
1 stop14h 55mMultiple Airlines
Thu 1/88:10 amSEA - BIO
2 stops19h 40mMultiple Airlines
Deal found 12/15$950
This Turkish Airlines deal was found by Cheapflights users on 12/15. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:10 pmBIO - SEA
1 stop32h 55mMultiple Airlines
Tue 12/237:00 pmSEA - BIO
2 stops28h 20mMultiple Airlines
Deal found 12/15$1,072
This Air Canada deal was found by Cheapflights users on 12/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:35 amBIO - SEA
3 stops30h 56mAir Canada
Thu 1/88:10 amSEA - BIO
2 stops23h 30mAir Canada
Deal found 12/15$1,083
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:45 pmBIO - SEA
2 stops21h 14mUnited Airlines
Sat 2/287:00 amSEA - BIO
3 stops24h 40mUnited Airlines
Deal found 12/15$1,204

Find flight deals from Bilbao to Washington

Keep the following information in mind while searching for Bilbao to Washington flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$837
(United Airlines)

One-way from

$405
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$1,181
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 Washington
Search Deals
One-way flight from Bilbao to Washington
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($195 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 December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bilbao to Washington 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 December 18, 2025.
Use the filters below to find and compare flights from Bilbao to Washington that are best for you.

Fly from

Bilbao

Fly to

Washington

Route

Depart

Return

Price

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sat 1/31

11:35 am-3:44 pm

3 stops37h 09m

Seattle/Tacoma Intl

Sat 2/7

8:10 am-10:50 am

2 stops17h 40m

$837

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sun 12/28

6:50 am-11:50 am

1 stop14h 00m

Seattle/Tacoma Intl

Sat 2/28

1:45 pm-5:20 pm

2 stops18h 35m

$855

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sun 12/28

11:55 am-11:50 am

1 stop32h 55m

Seattle/Tacoma Intl

Sat 2/28

1:40 pm-10:25 pm

1 stop23h 45m

$856

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 1/14

5:10 pm-5:05 pm

1 stop32h 55m

Seattle/Tacoma Intl

Sun 1/18

7:00 pm-11:00 am

1 stop31h 00m

$919

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 1/14

12:50 pm-9:15 am

2 stops53h 25m

Seattle/Tacoma Intl

Sun 1/18

8:00 pm-4:40 pm

2 stops35h 40m

$952

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sun 3/1

8:15 pm-2:19 pm

2 stops51h 04m

$405

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Tue 1/20

9:55 pm-2:20 pm

3 stops49h 25m

$409

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 4/30

7:00 am-9:08 am

2 stops35h 08m

$473

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Tue 3/31

1:10 pm-10:28 am

2 stops30h 18m

$503

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 4/30

6:10 pm-4:59 pm

1 stop31h 49m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 13 results
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Best time to book a flight from Bilbao to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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 Washington
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Bilbao to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Bilbao to Washington?

    Located just 3.0 mi from the city center, Bilbao (BIO) is the airport most travelers will use when flying to Washington from Bilbao.

  • How long is the flight from Bilbao to State of Washington?

    United Airlines, Delta, and KLM can get you from Bilbao to State of Washington in just under 14h. Your travel time can differ by up to 23h 09m. Bilbao and State of Washington 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 Washington that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Bilbao to Washington 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

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