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$469+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIO
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$569
(Orbitz)

One-way from

$469
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,068
Provider with most accurate pricing for Seattle/Tacoma Intl-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Bilbao flights.
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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. 16% potential increase in price ($223 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 30, 2025.

This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:50 pmSEA - BIO
1 stop19h 35mMultiple Airlines
Wed 10/226:45 amBIO - SEA
2 stops20h 51mMultiple Airlines
Deal found 4/29$628
This Lufthansa deal was found by Cheapflights users on 4/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:50 pmSEA - BIO
1 stop19h 35mLufthansa
Thu 10/26:45 amBIO - SEA
2 stops16h 31mLufthansa
Deal found 4/28$629
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/295:30 amSEA - BIO
2 stops28h 15mAir Canada
Thu 10/166:45 amBIO - SEA
2 stops20h 51mAir Canada
Deal found 4/28$633
This SWISS deal was found by Cheapflights users on 4/28. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/301:45 pmSEA - BIO
2 stops32h 55mSWISS
Thu 10/168:25 amBIO - SEA
2 stops19h 11mSWISS
Deal found 4/28$634
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:35 pmSEA - BIO
1 stop13h 05mDelta
Thu 10/306:50 amBIO - SEA
1 stop14h 00mDelta
Deal found 4/28$638
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Wed 10/11:09 pmSEA - BIO
2 stops25h 16mUnited Airlines
Wed 10/157:15 amBIO - SEA
1 stop18h 44mUnited Airlines
Deal found 4/28$645
This Air France deal was found by Cheapflights users on 4/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:45 pmSEA - BIO
1 stop18h 15mAir France
Fri 9/267:10 amBIO - SEA
1 stop19h 30mAir France
Deal found 4/28$728
This KLM deal was found by Cheapflights users on 4/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/121:55 pmSEA - BIO
1 stop23h 50mKLM
Mon 9/225:15 pmBIO - SEA
1 stop27h 30mKLM
Deal found 4/29$788
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/141:21 amSEA - BIO
2 stops31h 09mAer Lingus
Wed 10/226:10 pmBIO - SEA
1 stop32h 40mAer Lingus
Deal found 4/29$822
This lol.travel deal was found by Cheapflights users on 4/28. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/87:10 pmSEA - BIO
1 stop30h 55mTurkish Airlines
Wed 5/216:25 pmBIO - SEA
1 stop31h 50mTurkish Airlines
Deal found 4/28$985
This KAYAK deal was found by Cheapflights users on 4/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/298:30 amPDX - BIO
2 stops29h 55mLufthansa
Sun 9/286:45 amBIO - PDX
2 stops26h 59mLufthansa
Deal found 4/29$1,057
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/143:25 pmPDX - BIO
2 stops23h 00mMultiple Airlines
Wed 6/46:45 amBIO - PDX
2 stops21h 00mMultiple Airlines
Deal found 4/28$1,159

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 April 30, 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

Thu 5/8

5:05 pm-7:35 am

2 stops29h 30m

Bilbao

Wed 5/21

9:05 pm-3:05 pm

2 stops27h 00m

$920

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Thu 5/8

7:10 pm-11:05 am

1 stop30h 55m

Bilbao

Wed 5/21

6:25 pm-5:15 pm

1 stop31h 50m

$985

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Fri 7/18

5:55 am-10:55 am

2 stops20h 00m

Bilbao

Wed 7/23

7:10 am-11:15 am

1 stop13h 05m

$989

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Fri 7/18

6:50 pm-5:50 pm

1 stop14h 00m

Bilbao

Wed 7/23

7:15 am-4:59 pm

1 stop18h 44m

$1,023

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 6/11

5:30 am-6:20 pm

2 stops27h 50m

Bilbao

Wed 6/18

6:45 am-2:16 pm

2 stops16h 31m

$1,081

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 6/11

6:45 pm-10:00 pm

1 stop18h 15m

Bilbao

Wed 6/18

6:50 am-3:55 pm

1 stop18h 05m

$1,128

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 5/14

3:25 pm-11:25 pm

2 stops23h 00m

Bilbao

Wed 6/4

6:45 am-6:45 pm

2 stops21h 00m

$1,159

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sat 5/24

7:40 pm-5:50 pm

2 stops37h 10m

Bilbao

Wed 6/18

6:45 am-2:50 pm

2 stops17h 05m

$1,169

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 5/14

6:00 am-10:25 am

2 stops19h 25m

Bilbao

Wed 6/4

6:50 am-11:20 am

1 stop13h 30m

$1,173

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 5/14

1:15 pm-10:45 pm

1 stop24h 30m

Bilbao

Wed 6/4

6:50 am-11:20 am

1 stop13h 30m

$1,174

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 23 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 $1,178). 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 April 30, 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.

Rainfall in Bilbao by month

Plan your trip to Bilbao by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

Plan your trip to Bilbao by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bilbao, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 April 30, 2025.
Read through reviews of airlines operating flights from Washington to Bilbao, such as Delta, KLM and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,788 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 United Airlines, with whom users have recently found tickets for as low as $630. However, be on the lookout for offers from KLM and Air Canada, 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 $1,178). 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.
Newark to Bilbao flights
John F Kennedy Intl to Bilbao 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$596Average$1,425FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$672Average$1,233FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$675Average$1,181FlexibilityNo cancel feeOn-time77%
DeltaCheapest$730Average$1,194FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$765Average$1,011FlexibilityNo cancel feeOn-time75%

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