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$748+ Cheap flights from Bilbao (BIO) to Washington

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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Bilbao to Washington

Keep the following information in mind while searching for Bilbao to Washington flight deals. Data was last updated September 16, 2025.

Round-trip from

$748
(Iberia)

Popular in

August

Cheapest in

February

Average price

$836
From Bilbao to Washington
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($173 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 September 16, 2025.

This Iberia deal was found by Cheapflights users on 9/13. 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.
Thu 11/136:45 amBIO - SEA
2 stops25h 33mIberia
Mon 11/176:50 pmSEA - BIO
2 stops19h 25mIberia
Deal found 9/13$748
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/161:30 pmBIO - SEA
2 stops19h 57mAmerican Airlines
Wed 10/297:10 amSEA - BIO
2 stops17h 20mAmerican Airlines
Deal found 9/15$756
This Iberia deal was found by Cheapflights users on 9/14. 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.
Tue 10/147:00 amBIO - SEA
2 stops22h 46mIberia
Tue 10/2110:32 amSEA - BIO
2 stops17h 13mIberia
Deal found 9/14$772
This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:45 amBIO - SEA
1 stop14h 10mLufthansa
Wed 10/86:50 pmSEA - BIO
1 stop14h 00mLufthansa
Deal found 9/15$774
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:45 amBIO - SEA
1 stop14h 10mMultiple Airlines
Wed 10/83:28 pmSEA - BIO
2 stops19h 42mMultiple Airlines
Deal found 9/15$781
This lol.travel deal was found by Cheapflights users on 9/16. 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.
Thu 10/26:45 amBIO - SEA
1 stop14h 10mUnited Airlines
Wed 10/86:50 pmSEA - BIO
1 stop19h 35mUnited Airlines
Deal found 9/16$784
This Expedia deal was found by Cheapflights users on 9/14. 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.
Tue 10/146:45 amBIO - SEA
1 stop14h 10mLufthansa
Tue 10/212:20 pmSEA - BIO
1 stop19h 00mLufthansa
Deal found 9/14$786
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/136:45 amBIO - SEA
2 stops23h 09mUnited Airlines
Mon 11/178:36 amSEA - BIO
3 stops23h 04mUnited Airlines
Deal found 9/13$791
This Lufthansa deal was found by Cheapflights users on 9/13. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:45 amBIO - SEA
1 stop14h 25mLufthansa
Mon 11/172:00 pmSEA - BIO
1 stop17h 40mLufthansa
Deal found 9/13$792
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 10/146:45 amBIO - SEA
3 stops25h 30mUnited Airlines
Tue 10/215:31 pmSEA - BIO
2 stops20h 54mUnited Airlines
Deal found 9/14$813

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 September 16, 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

Thu 11/13

6:45 am-11:18 pm

2 stops25h 33m

Seattle/Tacoma Intl

Mon 11/17

6:50 pm-11:15 pm

2 stops19h 25m

$748

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 10/16

1:30 pm-12:27 am

2 stops19h 57m

Seattle/Tacoma Intl

Wed 10/29

7:10 am-8:30 am

2 stops17h 20m

$756

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Tue 10/14

7:00 am-8:46 pm

2 stops22h 46m

Seattle/Tacoma Intl

Tue 10/21

10:32 am-12:45 pm

2 stops17h 13m

$772

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 10/2

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Wed 10/8

6:50 pm-5:50 pm

1 stop14h 00m

$774

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 10/2

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Wed 10/8

3:28 pm-8:10 pm

2 stops19h 42m

$781

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 10/2

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Wed 10/8

6:50 pm-11:25 pm

1 stop19h 35m

$784

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Tue 10/14

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Tue 10/21

2:20 pm-6:20 pm

1 stop19h 00m

$786

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 10/16

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Wed 10/29

8:00 am-11:05 pm

2 stops31h 05m

$786

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 11/13

6:45 am-8:54 pm

2 stops23h 09m

Seattle/Tacoma Intl

Mon 11/17

2:00 pm-4:40 pm

1 stop17h 40m

$791

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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

How much does it cost to fly round-trip from Bilbao to State of Washington?

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?

    Iberia, American Airlines, and Lufthansa can get you from Bilbao to State of Washington in just under 14h 10m. Your travel time can differ by up to 11h 23m. 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.

  • What is the cheapest month to book a flight from Bilbao to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Bilbao to State of Washington (average of $238). Flying from Bilbao to State of Washington in June is currently the most expensive (average of $387). 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

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