Which airport is the most popular layover for flights between Washington, D.C. and Bilbao?

Lisbon (LIS) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

How long does it take to fly to Bilbao?

Flight times from Washington, D.C. to Bilbao vary, but if you’re flying out of Baltimore and flying into Bilbao (one of the most popular routes), then the duration is 14h 35m on average. Another popular route from Washington, D.C. to Bilbao is flying from Washington, D.C. to Bilbao, which will take roughly 14h 45m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Bilbao?

Iberia, United Airlines and Lufthansa are the top three most popular airlines that fly to Bilbao from Washington, D.C. according to our data. Iberia is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 5 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington, D.C. to Bilbao?

TAP AIR PORTUGAL, United Airlines, and American Airlines are the most popular carriers operating from Washington, D.C. to Bilbao

Which layover airport has the shortest travel time from Washington, D.C. to Bilbao?

Flights connecting via Madrid (MAD) have the shortest average one-way travel time: 9h 55m.

Which layover airport offers the lowest fares from Washington, D.C. to Bilbao?

Flights via Paris (CDG) offer the lowest average round-trip price of $508.

Which layover airport has the shortest connection time from Washington, D.C. to Bilbao?

Zurich (ZRH) has the shortest average layover time for this route: 1h 03m.

When did momondo last update prices for flights from Washington, D.C. to Bilbao Airport?

Prices for flights from Washington, D.C. to Bilbao Airport refresh daily.

How many operators does momondo search for flights from Washington, D.C. to Bilbao Airport?

There are 5 operators available for flights from Washington, D.C. to Bilbao Airport as of September 2025.

How old do you have to be to fly from Washington, D.C. to Bilbao Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Bilbao Airport.

What documentation or ID do you need to fly to Bilbao Airport?

The travel and health documents you'll need for your trip to Bilbao Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bilbao Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$253 Cheap Flights from Washington, D.C. to Bilbao (WAS-BIO) in 2025

Q: What is the typical price of a round-trip flight between Washington, D.C. and Bilbao?

Prices are currently low for flights on this route. Typical prices usually range from $535 to $689. The lowest price recently found on this route was $414.

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Find the cheapest flights from Washington, D.C. to Bilbao (WAS-BIO)

Round-trip

One-way

Last minute

Cheap round-trip flights

10:20 pm - 5:35 pmIAD-BIO

13h 15m1 stop

6:40 pm - 3:15 pmBIO-IAD

26h 35m1 stop

$414TAP AIR PORTUGAL

Find Deal

Fri, Oct 17 - Sun, Nov 2

5:40 pm - 11:05 amIAD-BIO

11h 25m1 stop

7:25 am - 9:05 pmBIO-IAD

18h 40m1 stop

$433United Airlines

Find Deal

Wed, Oct 22 - Wed, Oct 29

9:40 am - 6:20 pmDCA-BIO

26h 40m2 stops

7:25 am - 10:35 pmBIO-DCA

20h 10m2 stops

$452Air Canada

Find Deal

Tue, Oct 21 - Tue, Oct 28

9:20 pm - 10:00 pmIAD-BIO

18h 40m1 stop

7:10 am - 7:15 pmBIO-IAD

18h 05m1 stop

$456KLM

Find Deal

Wed, Oct 1 - Wed, Oct 22

9:35 pm - 10:25 amIAD-BIO

30h 50m1 stop

5:15 pm - 3:35 pmBIO-IAD

28h 20m1 stop

$459KLM

Find Deal

Mon, Oct 6 - Mon, Oct 13

12:08 pm - 10:25 amIAD-BIO

16h 17m2 stops

7:10 am - 7:15 pmBIO-IAD

18h 05m1 stop

$461Delta

Find Deal

Wed, Oct 1 - Wed, Oct 22

6:18 am - 10:25 amBWI-BIO

22h 07m2 stops

6:50 am - 11:13 pmBIO-BWI

22h 23m2 stops

$466Delta

Find Deal

Mon, Oct 6 - Wed, Oct 22

10:20 pm - 5:50 pmIAD-BIO

13h 30m1 stop

11:35 am - 9:05 pmBIO-IAD

14h 30m1 stop

$502Lufthansa

Find Deal

Thu, Oct 23 - Thu, Oct 30

10:20 pm - 6:20 pmIAD-BIO

14h 00m2 stops

7:15 am - 3:50 pmBIO-IAD

14h 35m2 stops

$531Lufthansa

Find Deal

Wed, Oct 1 - Wed, Oct 22

8:35 pm - 11:15 pmBWI-BIO

20h 40m3 stops

7:10 am - 6:45 pmBIO-BWI

17h 35m2 stops

$2,279Iberia

Find Deal

Thu, Nov 20 - Sun, Nov 30

Delta flights from Washington, D.C. to Bilbao

Our best Delta deals on Washington, D.C. to Bilbao flight tickets

Delta

Oct 1

IAD12:08 pmWashington, D.C. Dulles Intl

16h 17m

2 stops

BIO10:25 amBilbao

Oct 22

BIO7:10 amBilbao

18h 05m

1 stop

IAD7:15 pmWashington, D.C. Dulles Intl

$461

Find similar

Delta

Oct 6

BWI6:18 amBaltimore/Washington

22h 07m

2 stops

BIO10:25 amBilbao

Oct 22

BIO6:50 amBilbao

22h 23m

2 stops

BWI11:13 pmBaltimore/Washington

$466

Find similar

Delta

Oct 1

DCA11:10 amWashington, D.C. Reagan-National

17h 15m

2 stops

BIO10:25 amBilbao

Oct 22

BIO7:10 amBilbao

16h 00m

2 stops

DCA5:10 pmWashington, D.C. Reagan-National

$471

Find similar

KLM flights from Washington, D.C. to Bilbao

Our best KLM deals on Washington, D.C. to Bilbao flight tickets

KLM

Oct 1

IAD9:20 pmWashington, D.C. Dulles Intl

18h 40m

1 stop

BIO10:00 pmBilbao

Oct 22

BIO7:10 amBilbao

18h 05m

1 stop

IAD7:15 pmWashington, D.C. Dulles Intl

$456

Find similar

KLM

Oct 6

IAD9:35 pmWashington, D.C. Dulles Intl

30h 50m

1 stop

BIO10:25 amBilbao

Oct 13

BIO5:15 pmBilbao

28h 20m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$459

Find similar

KLM

Oct 21

BWI1:50 pmBaltimore/Washington

16h 05m

2 stops

BIO11:55 amBilbao

Oct 28

BIO11:55 amBilbao

16h 07m

2 stops

BWI11:02 pmBaltimore/Washington

$468

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Fri 10/17

10:20 pm-5:35 pm

1 stop13h 15m

Bilbao

Sun 11/2

6:40 pm-3:15 pm

1 stop26h 35m

$414

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/22

5:40 pm-11:05 am

1 stop11h 25m

Bilbao

Wed 10/29

7:25 am-9:05 pm

1 stop18h 40m

$433

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Tue 10/21

9:40 am-6:20 pm

2 stops26h 40m

Bilbao

Tue 10/28

7:25 am-10:35 pm

2 stops20h 10m

$452

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/1

9:20 pm-10:00 pm

1 stop18h 40m

Bilbao

Wed 10/22

7:10 am-7:15 pm

1 stop18h 05m

$456

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Mon 10/6

9:35 pm-10:25 am

1 stop30h 50m

Bilbao

Mon 10/13

5:15 pm-3:35 pm

1 stop28h 20m

$459

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/1

12:08 pm-10:25 am

2 stops16h 17m

Bilbao

Wed 10/22

7:10 am-7:15 pm

1 stop18h 05m

$461

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Mon 10/6

6:18 am-10:25 am

2 stops22h 07m

Bilbao

Wed 10/22

6:50 am-11:13 pm

2 stops22h 23m

$466

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Thu 10/23

10:20 pm-5:50 pm

1 stop13h 30m

Bilbao

Thu 10/30

11:35 am-9:05 pm

1 stop14h 30m

$502

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/1

10:20 pm-6:20 pm

2 stops14h 00m

Bilbao

Wed 10/22

7:15 am-3:50 pm

2 stops14h 35m

$531

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Thu 11/20

8:35 pm-11:15 pm

3 stops20h 40m

Bilbao

Sun 11/30

7:10 am-6:45 pm

2 stops17h 35m

$2,279

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. to Bilbao

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the typical price of a round-trip flight between Washington, D.C. and Bilbao?

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Washington, D.C. is in February. Flight prices, which tend to average around $547, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in February, then October is your next best option. Flight prices from Washington, D.C. to Bilbao during October average around $574.

What is the cheapest day to depart on your flight to Bilbao?

The cheapest day to depart from Washington, D.C. to Bilbao is on a Monday. Travelers who choose to depart for Bilbao on a Monday will often find tickets for as low as $602. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,050. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bilbao.

What is the cheapest time of day to depart on your flight to Bilbao?

Our most recent data shows that the best time of day to fly to Bilbao is in the evening. Flights from Washington, D.C. to Bilbao during this time can be as low as $764. At noon is when there is more demand to fly to Bilbao, so prices are often more expensive at around $890 per ticket.

Can stopping save me money on Washington, D.C. to Bilbao flights?

You could potentially save up to 41% on your flight if you consider stops on a Washington, D.C. to Bilbao flight.

When to book flights from Washington, D.C. to Bilbao

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Bilbao according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. to Bilbao (WAS to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Bilbao

Direct flights	None

There are no direct flights from Washington, D.C. to Bilbao. There are no popular flight routes from Washington, D.C. to Bilbao.

Search flight deals

How far is Washington, D.C. to Bilbao by plane?
There are 3738.8 mi between Washington, D.C. and Bilbao. In terms of flight time, this usually takes a little over 10h 50m.
When did momondo last update prices for flights from Washington, D.C. to Bilbao Airport?
Prices for flights from Washington, D.C. to Bilbao Airport refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Bilbao Airport?
There are 5 operators available for flights from Washington, D.C. to Bilbao Airport as of September 2025.
How old do you have to be to fly from Washington, D.C. to Bilbao Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Bilbao Airport.
What documentation or ID do you need to fly to Bilbao Airport?
The travel and health documents you'll need for your trip to Bilbao Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bilbao Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. to Bilbao?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to Bilbao is United Airlines (32% of total bookings). The next most popular airlines are Lufthansa (17%), Iberia (16%), and Delta (14%).

Best airlines flying from Washington, D.C. to Bilbao

Compare and see reviews for airlines that fly from Washington, D.C. to Bilbao with momondo

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $447	Free Cancellation	Rating 7.1 1,975 reviews	Search TAP AIR PORTUGAL flights
KLM	PriceFrom $503	Free Cancellation	Rating 7.8 1,386 reviews	Search KLM flights
Iberia	PriceFrom $509	Free Cancellation	Rating 7.0 2,921 reviews	Search Iberia flights
United Airlines	PriceFrom $514	Free Cancellation	Rating 7.4 8,944 reviews	Search United Airlines flights
Lufthansa	PriceFrom $530	Free Cancellation	Rating 6.8 7,409 reviews	Search Lufthansa flights

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Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Bilbao?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Bilbao from Washington, D.C..

Can I find flights from Washington, D.C. to Bilbao with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Bilbao on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Bilbao?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bilbao from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Bilbao right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bilbao, momondo offers a useful price alert feature which will track prices for flights to Bilbao from Washington, D.C. and alert you when they change.

An easier way to manage your Bilbao trip

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Cheap flights from Washington, D.C. to Bilbao from $253

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Bilbao departing on 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

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Filter for what you want

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Find the cheapest flights from Washington, D.C. to Bilbao (WAS-BIO)

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Delta flights from Washington, D.C. to Bilbao

Our best Delta deals on Washington, D.C. to Bilbao flight tickets

KLM flights from Washington, D.C. to Bilbao

Our best KLM deals on Washington, D.C. to Bilbao flight tickets

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How to get the cheapest flight ticket from Washington, D.C. to Bilbao

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. and Bilbao?

What is the cheapest month to fly to Bilbao?

What is the cheapest day to depart on your flight to Bilbao?

What is the cheapest time of day to depart on your flight to Bilbao?

Our most recent data shows that the best time of day to fly to Bilbao is in the evening. Flights from Washington, D.C. to Bilbao during this time can be as low as $764. At noon is when there is more demand to fly to Bilbao, so prices are often more expensive at around $890 per ticket.

Can stopping save me money on Washington, D.C. to Bilbao flights?

You could potentially save up to 41% on your flight if you consider stops on a Washington, D.C. to Bilbao flight.

What is the cheapest airline that flies from Washington, D.C. to Bilbao?

TAP AIR PORTUGAL, United Airlines, and American Airlines are the most popular carriers operating from Washington, D.C. to Bilbao

What airlines fly to Bilbao?

Which airport is the most popular layover for flights between Washington, D.C. and Bilbao?

Lisbon (LIS) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Washington, D.C. to Bilbao?

Flights via Paris (CDG) offer the lowest average round-trip price of $508.

Which layover airport has the shortest travel time from Washington, D.C. to Bilbao?

Flights connecting via Madrid (MAD) have the shortest average one-way travel time: 9h 55m.

Which layover airport has the shortest connection time from Washington, D.C. to Bilbao?

Zurich (ZRH) has the shortest average layover time for this route: 1h 03m.

How long does it take to fly to Bilbao?

When to book flights from Washington, D.C. to Bilbao

Cheap Washington, D.C. to Bilbao (WAS to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Bilbao

Direct flights

How far is Washington, D.C. to Bilbao by plane?

When did momondo last update prices for flights from Washington, D.C. to Bilbao Airport?

How many operators does momondo search for flights from Washington, D.C. to Bilbao Airport?

How old do you have to be to fly from Washington, D.C. to Bilbao Airport?

What documentation or ID do you need to fly to Bilbao Airport?

What is the most popular airline from Washington, D.C. to Bilbao?

Best airlines flying from Washington, D.C. to Bilbao

Compare and see reviews for airlines that fly from Washington, D.C. to Bilbao with momondo

Traveling to a place near Bilbao?

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Bilbao?

Can I find flights from Washington, D.C. to Bilbao with flexible booking policies on momondo?

How can momondo help me find flights from Washington, D.C. to Bilbao?

I’m not ready to book a flight from Washington, D.C. to Bilbao right now. Can momondo alert me if prices change?

An easier way to manage your Bilbao trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Spain

Airports servicing Basque Country