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$389+ Cheap flights from Washington, D.C. (WAS) 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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BIO
Feb 9 — Feb 161
Sun 2/9
Sun 2/16
1 adult, Economy
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The best prices from Washington, D.C. to Bilbao are usually found in February or October, booked 75 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Washington, D.C. to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$518
(Cheapflightsfares)

One-way from

$517
(Air Canada)

Popular in

December

Cheapest in

February

Average price

$547
Provider with most accurate pricing for Washington, D.C. (WAS)-Bilbao flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Bilbao flights.
Search Deals
From Washington, D.C. (WAS) to Bilbao
Search Deals
One-way flight from Washington, D.C. (WAS) to Bilbao
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Washington, D.C. to Bilbao

Cheapest flights from Washington, D.C. to Bilbao
Explore the most affordable flight options available from Washington, D.C. to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/911:30 pmIAD - BIO
1 stop14h 05mTAP AIR PORTUGAL
Wed 3/1912:15 pmBIO - IAD
1 stop14h 45mTAP AIR PORTUGAL
Deal found 2/3$518
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.
Tue 3/46:10 pmBWI - BIO
3 stops34h 10mMultiple Airlines
Tue 3/1110:55 pmBIO - BWI
3 stops24h 05mMultiple Airlines
Deal found 2/2$519
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.
Tue 3/48:24 amIAD - BIO
2 stops22h 26mMultiple Airlines
Tue 3/116:45 amBIO - IAD
1 stop15h 05mMultiple Airlines
Deal found 2/2$527
This United deal was found by Cheapflights users on 2/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/911:20 pmIAD - BIO
1 stop17h 30mUnited Airlines
Wed 3/191:10 pmBIO - IAD
2 stops29h 41mUnited Airlines
Deal found 2/3$531
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/411:10 amDCA - BIO
2 stops23h 25mAir Canada
Tue 3/116:45 amBIO - DCA
2 stops20h 52mAir Canada
Deal found 2/2$533
This Lufthansa deal was found by Cheapflights users on 2/3. 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.
Tue 3/45:50 pmIAD - BIO
1 stop12h 05mLufthansa
Tue 3/116:45 amBIO - IAD
1 stop15h 05mLufthansa
Deal found 2/3$539
This Delta deal was found by Cheapflights users on 2/3. 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 3/43:30 pmBWI - BIO
2 stops19h 50mDelta
Tue 3/116:50 amBIO - BWI
2 stops21h 25mDelta
Deal found 2/3$548
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/411:10 amDCA - BIO
2 stops23h 25mUnited Airlines
Mon 3/101:10 pmBIO - DCA
2 stops33h 57mUnited Airlines
Deal found 2/3$550
This SWISS deal was found by Cheapflights users on 2/3. 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 3/48:45 pmIAD - BIO
2 stops15h 20mSWISS
Mon 3/1011:35 amBIO - IAD
2 stops34h 50mSWISS
Deal found 2/3$571
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/224:35 pmIAD - BIO
1 stop9h 55mIberia
Fri 5/29:15 amBIO - IAD
1 stop11h 45mIberia
Deal found 2/2$572
This Air France deal was found by Cheapflights users on 2/3. 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.
Wed 4/309:20 pmIAD - BIO
1 stop18h 40mAir France
Wed 5/77:10 amBIO - IAD
1 stop15h 10mAir France
Deal found 2/3$610
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Sun 4/279:45 amDCA - BIO
2 stops16h 45mAmerican Airlines
Wed 5/79:15 amBIO - DCA
2 stops15h 49mAmerican Airlines
Deal found 2/3$611

Find flights from Washington, D.C. to Bilbao within your budget

Customize your flight search to find flights from Washington, D.C. 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 February 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Sun 3/9

11:30 pm-6:35 pm

1 stop14h 05m

Bilbao

Wed 3/19

12:15 pm-10:00 pm

1 stop14h 45m

$518

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Sun 3/2

5:35 pm-4:30 pm

2 stops16h 55m

Bilbao

Tue 3/18

11:55 am-11:15 pm

2 stops16h 20m

$524

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Sun 3/2

12:05 pm-11:20 am

2 stops17h 15m

Bilbao

Tue 3/18

11:55 am-11:16 pm

2 stops16h 21m

$524

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 3/4

8:24 am-12:50 pm

2 stops22h 26m

Bilbao

Tue 3/11

6:45 am-4:50 pm

1 stop15h 05m

$527

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Sun 3/9

11:20 pm-9:50 pm

1 stop17h 30m

Bilbao

Wed 3/19

1:10 pm-1:51 pm

2 stops29h 41m

$531

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Sun 3/9

4:10 pm-4:35 pm

2 stops19h 25m

Bilbao

Wed 3/19

1:10 pm-8:57 am

2 stops24h 47m

$532

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 3/4

5:50 pm-11:55 am

1 stop12h 05m

Bilbao

Tue 3/11

6:45 am-4:50 pm

1 stop15h 05m

$539

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Tue 3/4

11:10 am-4:35 pm

2 stops23h 25m

Bilbao

Mon 3/10

1:10 pm-6:07 pm

2 stops33h 57m

$550

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 3/4

8:45 pm-6:05 pm

2 stops15h 20m

Bilbao

Mon 3/10

11:35 am-5:25 pm

2 stops34h 50m

$571

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 4/22

4:35 pm-8:30 am

1 stop9h 55m

Bilbao

Fri 5/2

9:15 am-3:00 pm

1 stop11h 45m

$572

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 36 results
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Compare providers for flights from Washington, D.C. to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Bilbao in February.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Bilbao flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Bilbao flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Bilbao flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Washington, D.C. 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.

Travel insights for flights from Washington, D.C. to Bilbao

Get recent, data-driven insights about flights from Washington, D.C. to Bilbao including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Washington, D.C. to Bilbao?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Bilbao. Price data was last updated on January 31, 2025.

The best time to book flights from Washington, D.C. to Bilbao is 75 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Bilbao?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Bilbao (average of $541). Flying from Washington, D.C. 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 WAS to BIO?

Find hourly flight availability from Washington, D.C. 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 February 4, 2025.

It’s typically best to fly out from Washington, D.C. to Bilbao in the evening. Doing so could potentially save you 15% on the flight price compared to flying at noon, which is usually more expensive.

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 February 4, 2025.
Get a feel of what it's like to fly with Delta, KLM and Austrian Airlines from Washington, D.C. to Bilbao by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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
8,415 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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
1,334 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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.

Austrian Airlines
7.5
Good
785 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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.

SWISS
7.5
Good
1,582 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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.

Air France
7.4
Good
1,469 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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, D.C. 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, D.C.?

    If you book a flight to Bilbao from Washington, D.C., you will be flying to Bilbao, which is the city’s only airport. Bilbao (BIO) is located 3.0 mi from the center of Bilbao. There are 0 flights from Washington, D.C. to Bilbao per day from 6 different airlines.

  • What are the cheapest airlines flying from Washington, D.C. to Bilbao round-trip?

    Currently priced at $518, TAP AIR PORTUGAL will fly you from Washington, D.C. to Bilbao and back. In addition to TAP AIR PORTUGAL, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Air Canada - these airlines can fly you to your destination from $531 and $533, respectively. TAP AIR PORTUGAL is currently priced 33% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. to Bilbao one-way?

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $517. However, be on the lookout for offers from United Airlines and TAP AIR PORTUGAL, as they are both options that can get you from Washington, D.C. to Bilbao for a low price.

  • What are the most popular routes from Washington, D.C. to Bilbao?

    While some choose either Washington, D.C. Dulles Intl - Bilbao or Baltimore/Washington - Bilbao, Washington, D.C. Reagan-National - Bilbao is the most popular route from Washington, D.C. to Bilbao.

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

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

  • How can I find direct flights from Washington, D.C. to Bilbao?

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

  • Can I find deals for business class flights from Washington, D.C. to Bilbao?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Bilbao (average of $541). Flying from Washington, D.C. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Bilbao flights
Dulles Intl to Bilbao flights
Dulles Intl to San Sebastian flights
Reagan-National to San Sebastian flights

Top 6 airlines flying from Washington, D.C. to Bilbao

Discover the top 6 airlines that operate flights from Washington, D.C. 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 February 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$431Average$874FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$471Average$837FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$507Average$700FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$522Average$764FlexibilityNo cancel feeOn-time76%
DeltaCheapest$551Average$611FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$605Average$760FlexibilityNo cancel feeOn-time69%
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