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.

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

Delta and Turkish Airlines are the most popular carriers operating from Washington, D.C. to Bilbao

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

Lisbon (LIS) was the most common stop: 35% 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 Washington, D.C. and flying into Bilbao (one of the most popular routes), then the duration is 13h 12m on average. Another popular route from Washington, D.C. to Bilbao is flying from Baltimore to Bilbao, which will take roughly 15h 53m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Bilbao?

Iberia, Lufthansa and United Airlines 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 36% 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.

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 October 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.

$446 Cheap Flights from Washington, D.C. to Bilbao in 2025/26

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9:45 am - 12:05 pmIAD-BIO

20h 20m2 stops

7:25 am - 8:05 pmBIO-IAD

18h 40m1 stop

$454Multiple Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

9:45 am - 4:10 pmIAD-BIO

24h 25m2 stops

7:25 am - 8:05 pmBIO-IAD

18h 40m1 stop

$456Multiple Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

10:55 pm - 9:55 pmIAD-BIO

17h 00m1 stop

6:45 am - 3:50 pmBIO-IAD

15h 05m1 stop

$468Lufthansa

Find Deal

Wed, Nov 5 - Fri, Nov 14

5:40 pm - 6:05 pmIAD-BIO

18h 25m1 stop

6:45 am - 8:57 pmBIO-IAD

20h 12m2 stops

$479United Airlines

Find Deal

Wed, Nov 5 - Fri, Nov 14

10:30 am - 12:50 pmDCA-BIO

20h 20m2 stops

6:45 am - 10:35 pmBIO-DCA

21h 50m2 stops

$480United Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

12:32 pm - 11:30 amDCA-BIO

16h 58m2 stops

6:50 am - 5:05 pmBIO-DCA

16h 15m2 stops

$485Delta

Find Deal

Wed, Dec 3 - Wed, Dec 10

10:55 pm - 11:20 pmIAD-BIO

18h 25m2 stops

7:25 am - 9:15 pmBIO-IAD

19h 50m2 stops

$510Lufthansa

Find Deal

Wed, Nov 5 - Fri, Nov 14

11:13 am - 11:20 amDCA-BIO

18h 07m2 stops

6:50 am - 6:26 pmBIO-DCA

17h 36m2 stops

$516Delta

Find Deal

Thu, Dec 4 - Thu, Dec 11

8:35 pm - 4:55 pmBWI-BIO

14h 20m2 stops

9:35 pm - 6:45 pmBIO-BWI

51h 10m2 stops

$1,063Iberia

Find Deal

Wed, Dec 24 - Wed, Jan 7

8:35 pm - 8:30 amBWI-BIO

53h 55m2 stops

9:15 am - 6:45 pmBIO-BWI

39h 30m2 stops

$1,071Iberia

Find Deal

Thu, Dec 25 - Thu, Jan 8

Lufthansa flights from Washington, D.C. to Bilbao

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

Lufthansa

Nov 5

IAD10:55 pmWashington, D.C. Dulles Intl

17h 00m

1 stop

BIO9:55 pmBilbao

Nov 14

BIO6:45 amBilbao

15h 05m

1 stop

IAD3:50 pmWashington, D.C. Dulles Intl

$468

Find similar

Lufthansa

Nov 5

IAD10:55 pmWashington, D.C. Dulles Intl

18h 25m

2 stops

BIO11:20 pmBilbao

Nov 14

BIO7:25 amBilbao

19h 50m

2 stops

IAD9:15 pmWashington, D.C. Dulles Intl

$510

Find similar

Lufthansa

Mar 12

IAD7:00 pmWashington, D.C. Dulles Intl

12h 00m

1 stop

BIO12:00 pmBilbao

Mar 22

BIO6:45 amBilbao

15h 05m

1 stop

IAD4:50 pmWashington, D.C. Dulles Intl

$551

Find similar

KLM flights from Washington, D.C. to Bilbao

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

KLM

Dec 3

IAD6:50 pmWashington, D.C. Dulles Intl

10h 40m

1 stop

BIO11:30 amBilbao

Dec 10

BIO6:50 amBilbao

15h 15m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

$470

Find similar

KLM

Nov 4

IAD6:05 pmWashington, D.C. Dulles Intl

11h 15m

1 stop

BIO11:20 amBilbao

Nov 12

BIO6:50 amBilbao

15h 33m

2 stops

IAD4:23 pmWashington, D.C. Dulles Intl

$487

Find similar

KLM

Dec 3

BWI2:41 pmBaltimore/Washington

14h 39m

2 stops

BIO11:20 amBilbao

Dec 10

BIO7:25 amBilbao

15h 26m

2 stops

BWI4:51 pmBaltimore/Washington

$538

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 12/3

9:45 am-12:05 pm

2 stops20h 20m

Bilbao

Wed 12/10

7:25 am-8:05 pm

1 stop18h 40m

$454

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 12/3

9:45 am-4:10 pm

2 stops24h 25m

Bilbao

Wed 12/10

7:25 am-8:05 pm

1 stop18h 40m

$456

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 11/5

10:55 pm-9:55 pm

1 stop17h 00m

Bilbao

Fri 11/14

6:45 am-3:50 pm

1 stop15h 05m

$468

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 11/5

5:40 pm-6:05 pm

1 stop18h 25m

Bilbao

Fri 11/14

6:45 am-8:57 pm

2 stops20h 12m

$479

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Tue 12/2

10:30 am-12:50 pm

2 stops20h 20m

Bilbao

Tue 12/9

6:45 am-10:35 pm

2 stops21h 50m

$480

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Wed 12/3

12:32 pm-11:30 am

2 stops16h 58m

Bilbao

Wed 12/10

6:50 am-5:05 pm

2 stops16h 15m

$485

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 11/5

10:55 pm-11:20 pm

2 stops18h 25m

Bilbao

Fri 11/14

7:25 am-9:15 pm

2 stops19h 50m

$510

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Thu 12/4

11:13 am-11:20 am

2 stops18h 07m

Bilbao

Thu 12/11

6:50 am-6:26 pm

2 stops17h 36m

$516

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Wed 12/24

8:35 pm-4:55 pm

2 stops14h 20m

Bilbao

Wed 1/7

9:35 pm-6:45 pm

2 stops51h 10m

$1,063

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Thu 12/25

8:35 pm-8:30 am

2 stops53h 55m

Bilbao

Thu 1/8

9:15 am-6:45 pm

2 stops39h 30m

$1,071

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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

Prices

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Other information

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 $566.

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 19% 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 40m.
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 October 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 (33% of total bookings). The next most popular airlines are Lufthansa (18%), Iberia (17%), and Delta (11%).

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 2,022 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $492	Free Cancellation	Rating 6.8 7,506 reviews	Search Lufthansa flights
KLM	PriceFrom $503	Free Cancellation	Rating 7.7 1,404 reviews	Search KLM flights
Iberia	PriceFrom $509	Free Cancellation	Rating 7.0 2,996 reviews	Search Iberia flights
United Airlines	PriceFrom $514	Free Cancellation	Rating 7.4 8,991 reviews	Search United Airlines flights

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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.

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Cheap flights from Washington, D.C. to Bilbao from $454

This is the cheapest round-trip 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 12/3. 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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Lufthansa flights from Washington, D.C. to Bilbao

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

KLM flights from Washington, D.C. to Bilbao

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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 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 19% 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?

Delta and Turkish 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: 35% 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