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Bilbao

$365+ 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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BIO
Feb 3 — Feb 101
Tue 2/3
Tue 2/10
1 adult, Economy
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Cheap 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 January 4, 2026.

This AirNGo deal was found by Cheapflights users on 1/4. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/195:30 pmIAD - BIO
1 stop18h 25mTAP AIR PORTUGAL
Wed 2/412:10 pmBIO - IAD
1 stop14h 50mTAP AIR PORTUGAL
Deal found 1/4$399
This oojo deal was found by Cheapflights users on 1/2. 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.
Mon 3/25:30 pmIAD - BIO
1 stop18h 25mTAP AIR PORTUGAL
Sun 3/156:40 pmBIO - IAD
1 stop26h 35mTAP AIR PORTUGAL
Deal found 1/2$404
This Vliegwinkel deal was found by Cheapflights users on 1/3. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:30 pmIAD - BIO
1 stop11h 55mTAP AIR PORTUGAL
Tue 2/246:40 pmBIO - IAD
1 stop32h 20mTAP AIR PORTUGAL
Deal found 1/3$412
This KAYAK deal was found by Cheapflights users on 1/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:35 pmIAD - BIO
1 stop13h 30mTAP AIR PORTUGAL
Mon 5/1112:25 pmBIO - IAD
1 stop14h 10mTAP AIR PORTUGAL
Deal found 1/3$432
This KAYAK deal was found by Cheapflights users on 1/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:35 pmIAD - BIO
1 stop13h 30mTAP AIR PORTUGAL
Sun 5/107:45 pmBIO - IAD
1 stop30h 50mTAP AIR PORTUGAL
Deal found 1/3$440
This Mytrip deal was found by Cheapflights users on 1/4. 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.
Wed 2/1810:30 pmIAD - BIO
1 stop37h 25mTAP AIR PORTUGAL
Wed 2/2512:10 pmBIO - IAD
1 stop14h 50mTAP AIR PORTUGAL
Deal found 1/4$444
This oojo deal was found by Cheapflights users on 1/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:30 pmIAD - BIO
1 stop11h 55mTAP AIR PORTUGAL
Sun 11/296:40 pmBIO - IAD
1 stop26h 35mTAP AIR PORTUGAL
Deal found 1/3$460
This Kiwi.com deal was found by Cheapflights users on 1/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:45 pmIAD - BIO
1 stop11h 45mTAP AIR PORTUGAL
Wed 8/2612:25 pmBIO - IAD
1 stop14h 10mTAP AIR PORTUGAL
Deal found 1/2$466
This KAYAK deal was found by Cheapflights users on 1/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:40 pmIAD - BIO
1 stop18h 20mTAP AIR PORTUGAL
Wed 8/2612:25 pmBIO - IAD
1 stop14h 10mTAP AIR PORTUGAL
Deal found 1/2$467
This KAYAK deal was found by Cheapflights users on 1/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:20 pmIAD - BIO
1 stop33h 15mScandinavian Airlines
Wed 5/137:35 pmBIO - IAD
1 stop27h 15mScandinavian Airlines
Deal found 1/3$469
This Delta deal was found by Cheapflights users on 1/2. 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.
Tue 3/243:35 pmBWI - BIO
2 stops14h 55mDelta
Wed 4/110:30 amBIO - BWI
2 stops14h 49mDelta
Deal found 1/2$592
This Delta deal was found by Cheapflights users on 1/2. 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.
Tue 3/2412:16 pmDCA - BIO
2 stops18h 14mDelta
Wed 4/110:30 amBIO - DCA
2 stops18h 06mDelta
Deal found 1/2$592

Find 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 January 4, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$404
(oojo)

One-way from

$365
(Kiwi.com)

Popular in

June

Cheapest in

March

Average price

$637
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. 10% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
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 January 4, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Bilbao that are best for you.

Fly from

Washington, D.C.

Fly to

Bilbao

Route

Depart

Return

Price

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Mon 3/2

5:30 pm-5:55 pm

1 stop18h 25m

Bilbao

Sun 3/15

6:40 pm-4:15 pm

1 stop26h 35m

$404

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Mon 4/20

10:35 pm-6:00 pm

1 stop13h 25m

Bilbao

Mon 5/11

12:25 pm-8:35 pm

1 stop14h 10m

$432

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Sun 4/19

5:40 pm-11:40 am

1 stop12h 00m

Bilbao

Sun 5/10

7:45 pm-8:35 pm

1 stop30h 50m

$440

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Mon 5/4

10:35 pm-6:00 pm

1 stop13h 25m

Bilbao

Thu 5/21

12:15 pm-8:35 pm

1 stop14h 20m

$512

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Sun 4/19

5:40 pm-11:40 am

1 stop12h 00m

Bilbao

Thu 4/23

12:15 pm-8:35 pm

1 stop14h 20m

$557

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Mon 4/20

10:35 pm-6:00 pm

1 stop13h 25m

Bilbao

Fri 5/8

12:15 pm-8:35 pm

1 stop14h 20m

$558

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Fri 4/17

5:05 pm-5:35 pm

1 stop18h 30m

Bilbao

Fri 5/8

12:15 pm-8:35 pm

1 stop14h 20m

$578

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Fri 4/17

5:05 pm-5:35 pm

1 stop18h 30m

Bilbao

Tue 5/12

6:50 pm-3:05 pm

1 stop26h 15m

$578

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 3/24

9:55 am-12:50 pm

2 stops21h 55m

Bilbao

Wed 4/1

7:15 am-4:05 pm

2 stops14h 50m

$579

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Fri 4/17

10:35 pm-5:35 pm

1 stop13h 00m

Bilbao

Mon 5/11

12:25 pm-3:05 pm

1 stop32h 40m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 53 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 January.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Bilbao flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Bilbao

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 2, 2026.

The best time to book flights from Washington, D.C. to Bilbao is 32 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.

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 January 4, 2026.
See what other customers who have flown with Delta, United Airlines, and TAP AIR PORTUGAL from Washington, D.C. to Bilbao have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,017 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,017 reviews
Delta
7.9
Good
8,017 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,137 reviews
Delta
7.9
Good
8,017 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
TAP AIR PORTUGAL
7.1
Good
2,108 reviews
Delta
7.9
Good
8,017 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Iberia
7.0
Good
3,062 reviews
Delta
7.9
Good
8,017 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,679 reviews
Delta
7.9
Good
8,017 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 4 different airlines.

  • How long is the flight from Washington, D.C. to Bilbao?

    A quick flight from Washington, D.C. to Bilbao can take about 14h 55m. TAP AIR PORTUGAL provides one of the quickest options available for as low as $592. The distance from Washington, D.C. to Bilbao is about 3713 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $492, Lufthansa will fly you from Washington, D.C. to Bilbao and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and Iberia - these airlines can fly you to your destination from $503 and $509, respectively. Lufthansa is currently priced 30% below the average price you’ll pay for this route.

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

    While some choose either Washington, D.C. Reagan-National - Bilbao or Baltimore/Washington - Bilbao, Washington, D.C. Dulles Intl - 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.

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.
Dulles Intl to Bilbao flights
Reagan-National to Bilbao flights
Dulles Intl to San Sebastian flights
Reagan-National to San Sebastian flights

Top 4 airlines flying from Washington, D.C. to Bilbao

Discover the top 4 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 January 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$492Average$739FlexibilityNo cancel feeOn-time76%
KLMCheapest$503Average$750FlexibilityNo cancel feeOn-time75%
IberiaCheapest$509Average$590FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$514Average$679FlexibilityNo cancel feeOn-time69%

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