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$415+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
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 February 4, 2026.

This KLM deal was found by Cheapflights users on 2/2. 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.
Mon 2/166:50 am
BIO
-
SEA
1 stop13h 50m
Multiple Airlines
Sun 2/222:15 pm
SEA
-
BIO
1 stop18h 05m
Multiple Airlines
Deal found 2/2$732
This KLM deal was found by Cheapflights users on 2/2. 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.
Mon 2/165:20 pm
BIO
-
SEA
1 stop27h 20m
KLM
Sun 2/229:45 am
SEA
-
BIO
2 stops16h 35m
KLM
Deal found 2/2$738
This United Airlines deal was found by Cheapflights users on 2/1. 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 2/196:45 am
BIO
-
SEA
2 stops26h 06m
United Airlines
Wed 2/253:10 pm
SEA
-
BIO
1 stop21h 45m
United Airlines
Deal found 2/1$771
This United Airlines deal was found by Cheapflights users on 2/2. 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 9/26:50 am
BIO
-
SEA
2 stops16h 32m
United Airlines
Sun 9/136:50 pm
SEA
-
BIO
1 stop19h 35m
United Airlines
Deal found 2/2$825
This Delta deal was found by Cheapflights users on 2/2. 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
2 stops21h 15m
Delta
Sun 9/1312:00 pm
SEA
-
BIO
2 stops20h 30m
Delta
Deal found 2/2$841
This Mytrip deal was found by Cheapflights users on 2/2. 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.
Thu 3/197:45 am
BIO
-
SEA
2 stops18h 15m
Multiple Airlines
Thu 3/263:35 pm
SEA
-
BIO
3 stops21h 40m
Multiple Airlines
Deal found 2/2$856
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/196:45 am
BIO
-
SEA
1 stop14h 25m
United Airlines
Thu 3/267:10 pm
SEA
-
BIO
2 stops44h 10m
United Airlines
Deal found 2/2$879
This oojo deal was found by Cheapflights users on 2/2. 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.
Thu 3/195:10 pm
BIO
-
SEA
1 stop32h 55m
Turkish Airlines
Thu 3/268:00 pm
SEA
-
BIO
1 stop31h 00m
Turkish Airlines
Deal found 2/2$882

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 February 4, 2026.

Round-trip from

$732
(KLM)

One-way from

$415
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$629
From Bilbao to Washington
Search Deals
One-way flight from Bilbao to Washington
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).
Search Deals
Average for round-trip flights in February 2026
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 February 4, 2026.
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

Mon 2/16

6:50 am-11:40 am

1 stop13h 50m

Seattle/Tacoma Intl

Sun 2/22

2:15 pm-5:20 pm

1 stop18h 05m

$732

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 2/16

5:20 pm-11:40 am

1 stop27h 20m

Seattle/Tacoma Intl

Sun 2/22

9:45 am-11:20 am

2 stops16h 35m

$738

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 2/19

6:45 am-11:51 pm

2 stops26h 06m

Seattle/Tacoma Intl

Wed 2/25

8:17 am-9:55 pm

2 stops28h 38m

$771

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 3/19

7:45 am-6:00 pm

2 stops18h 15m

Seattle/Tacoma Intl

Thu 3/26

3:35 pm-9:15 pm

3 stops21h 40m

$856

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 2/16

7:25 am-10:57 pm

3 stops24h 32m

Seattle/Tacoma Intl

Sun 2/22

8:00 pm-12:05 pm

2 stops31h 05m

$924

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sun 4/26

9:40 pm-7:23 pm

3 stops54h 43m

$415

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Sun 4/26

6:10 pm-5:10 pm

1 stop32h 00m

$638

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

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

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

Currently, February is the cheapest month in which you can book a flight from Bilbao to State of Washington (average of $615). Flying from Bilbao to State of Washington 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.

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?

    KLM and United Airlines can get you from Bilbao to State of Washington in just under 26h 06m. Your travel time can differ by up to 1h 14m. 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, February is the cheapest month in which you can book a flight from Bilbao to State of Washington (average of $615). Flying from Bilbao to State of Washington 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

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