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Bilbao

$307+ Cheap flights from Washington to Bilbao (BIO)

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIO
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Washington to Bilbao

Keep the following information in mind while searching for Washington to Bilbao flight deals. Data was last updated July 31, 2025.

Round-trip from

$557
(Kiwi.com)

One-way from

$311
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,069
From Washington to Bilbao
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One-way flight from Washington to Bilbao
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Highest demand for flights based on searches. 14% potential increase in price ($178 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Washington to Bilbao

Cheapest flights from Washington to Bilbao
Explore the most affordable flight options available from Washington to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 9/287:15 pmSEA - BIO
2 stops33h 05mLufthansa
Tue 10/286:40 amBIO - SEA
1 stop14h 30mLufthansa
Deal found 7/30$557
This United Airlines deal was found by Cheapflights users on 7/29. 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 10/112:43 pmSEA - BIO
2 stops25h 42mUnited Airlines
Fri 10/106:45 amBIO - SEA
2 stops20h 51mUnited Airlines
Deal found 7/29$596
This Booking.com deal was found by Cheapflights users on 7/29. 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.
Wed 10/17:00 amSEA - BIO
2 stops30h 25mMultiple Airlines
Fri 10/106:45 amBIO - SEA
2 stops35h 36mMultiple Airlines
Deal found 7/29$614
This United Airlines deal was found by Cheapflights users on 7/28. 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 11/143:05 pmPSC - BIO
2 stops23h 00mUnited Airlines
Tue 11/186:40 amBIO - PSC
2 stops25h 27mUnited Airlines
Deal found 7/28$656
This Air Canada deal was found by Cheapflights users on 7/30. 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.
Sun 9/77:40 pmPDX - BIO
2 stops37h 10mAir Canada
Wed 10/226:45 amBIO - PDX
2 stops25h 16mAir Canada
Deal found 7/30$671
This Lufthansa deal was found by Cheapflights users on 7/30. 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.
Sun 9/148:30 amPDX - BIO
2 stops24h 20mLufthansa
Thu 10/236:45 amBIO - PDX
2 stops21h 01mLufthansa
Deal found 7/30$675
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/75:00 amPDX - BIO
2 stops33h 25mUnited Airlines
Tue 10/216:45 amBIO - PDX
3 stops26h 43mUnited Airlines
Deal found 7/30$685
This Gotogate deal was found by Cheapflights users on 7/30. 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.
Sun 9/147:15 pmSEA - BIO
2 stops38h 30mAir Canada
Sun 9/216:45 amBIO - SEA
2 stops20h 51mAir Canada
Deal found 7/30$784
This Finnair deal was found by Cheapflights users on 7/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/102:05 pmPDX - BIO
2 stops24h 10mMultiple Airlines
Wed 10/226:45 amBIO - PDX
2 stops25h 21mMultiple Airlines
Deal found 7/31$809
This Iberia deal was found by Cheapflights users on 7/31. 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.
Sun 9/710:30 amPDX - BIO
2 stops21h 25mIberia
Tue 10/219:15 amBIO - PDX
2 stops23h 14mIberia
Deal found 7/31$818
This Delta deal was found by Cheapflights users on 7/31. 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 9/711:14 amPDX - BIO
2 stops20h 26mDelta
Thu 10/2312:00 pmBIO - PDX
1 stop32h 05mDelta
Deal found 7/31$903
This KLM deal was found by Cheapflights users on 7/30. 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 9/1412:55 pmPDX - BIO
1 stop24h 50mKLM
Wed 10/227:10 amBIO - PDX
2 stops17h 55mKLM
Deal found 7/30$926

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Bilbao 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 July 31, 2025.
Use the filters below to find and compare flights from Washington to Bilbao that are best for you.

Fly from

Washington

Fly to

Bilbao

Route

Depart

Return

Price

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/28

7:15 pm-1:20 pm

2 stops33h 05m

Bilbao

Tue 10/28

6:40 am-1:10 pm

1 stop14h 30m

$557

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/1

12:43 pm-11:25 pm

2 stops25h 42m

Bilbao

Fri 10/10

6:45 am-6:36 pm

2 stops20h 51m

$596

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/1

7:00 am-10:25 pm

2 stops30h 25m

Bilbao

Fri 10/10

6:45 am-9:21 am

2 stops35h 36m

$614

PascoBilbao

PSC - BIO

PSCBIO

Pasco Tri Cities

Fri 11/14

3:05 pm-11:05 pm

2 stops23h 00m

Bilbao

Tue 11/18

6:40 am-11:07 pm

2 stops25h 27m

$656

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 9/7

7:40 pm-5:50 pm

2 stops37h 10m

Bilbao

Wed 10/22

6:45 am-11:01 pm

2 stops25h 16m

$671

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 9/14

8:30 am-5:50 pm

2 stops24h 20m

Bilbao

Thu 10/23

6:45 am-6:46 pm

2 stops21h 01m

$675

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 9/7

5:00 am-11:25 pm

2 stops33h 25m

Bilbao

Tue 10/21

6:45 am-12:28 am

3 stops26h 43m

$685

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/14

7:15 pm-6:45 pm

2 stops38h 30m

Bilbao

Sun 9/21

6:45 am-6:36 pm

2 stops20h 51m

$784

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 9/10

2:05 pm-11:15 pm

2 stops24h 10m

Bilbao

Wed 10/22

6:45 am-11:06 pm

2 stops25h 21m

$809

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 9/7

10:30 am-4:55 pm

2 stops21h 25m

Bilbao

Tue 10/21

9:15 am-11:29 pm

2 stops23h 14m

$818

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 22 results
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Best time to book a flight from Washington to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Washington 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 Washington to Bilbao

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Bilbao (average of $541). Flying from State of Washington to Bilbao in June is currently the most expensive (average of $1,135). 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.

What is the cheapest time of day to fly from WA to BIO?

Find hourly flight availability from Washington to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Bilbao as you normally would.

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated July 31, 2025.
Get a feel of what it's like to fly with Delta, KLM, and SWISS from Washington to Bilbao by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,851 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Washington to Bilbao. 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 into for flights to Bilbao from Washington?

    Bilbao (BIO), located 3.0 mi from the city center, is the airport you fly into when you book flights from Washington to Bilbao.

  • What are the cheapest airlines to fly from State of Washington to Bilbao one-way?

    The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as $437. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from State of Washington to Bilbao for a low price.

  • What are the most popular routes from State of Washington to Bilbao?

    The most popular flight routes from State of Washington to Bilbao are Seattle/Tacoma Intl - Bilbao, Portland - Bilbao and Pasco Tri Cities - Bilbao.

  • Can I find deals for flights from Washington to Bilbao that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Bilbao 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 State of Washington to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Bilbao (average of $541). Flying from State of Washington to Bilbao in June is currently the most expensive (average of $1,135). 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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Alternative routes for Washington to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
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John F Kennedy Intl to Bilbao flights
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Atlanta to San Sebastian flights
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Top 5 airlines flying from Washington to Bilbao

Discover the top 5 airlines that operate flights from Washington to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$596Average$1,305FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$675Average$968FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$686Average$1,131FlexibilityNo cancel feeOn-time76%
KLMCheapest$702Average$974FlexibilityNo cancel feeOn-time75%
DeltaCheapest$730Average$1,080FlexibilityNo cancel feeOn-timeN/A

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