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

Flights via Lisbon (LIS) offer the lowest average round-trip price of $618.

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

Flights connecting via Lisbon (LIS) have the shortest average one-way travel time: 11h 50m.

What airlines fly to Bilbao?

Lufthansa, TAP AIR PORTUGAL and United Airlines are the top three most popular airlines that fly to Bilbao from Washington, D.C. according to our data. Lufthansa is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 3 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?

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

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 12h on average. Another popular route from Washington, D.C. to Bilbao is flying from Baltimore to Bilbao, which will take roughly 13h 55m. Keep in mind that layovers or delays could extend your travel time.

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

Lisbon (LIS) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

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

Munich (MUC) has the shortest average layover time for this route: 2h 11m.

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 3 operators available for flights from Washington, D.C. to Bilbao Airport as of August 2026.

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.

$260 Cheap Flights from Washington, D.C. to Bilbao in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. to Bilbao

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:10 pm - 5:45 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

15h 35m2 stops Zurich Munich Franz Josef Strauss

9:50 am - 5:00 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

13h 10m1 stop Zurich

$703SWISS

Wed, Nov 11 - Wed, Nov 18

10:55 pm - 11:10 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

18h 15m1 stop Munich Franz Josef Strauss

6:45 am - 3:55 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

15h 10m1 stop Frankfurt am Main

$706Lufthansa

Mon, Nov 9 - Thu, Nov 19

10:55 pm - 11:10 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

18h 15m1 stop Munich Franz Josef Strauss

7:30 am - 8:10 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

18h 40m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$713Multiple Airlines

Mon, Nov 9 - Thu, Nov 19

5:40 pm - 8:15 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

20h 35m2 stops Lisbon Humberto Delgado Madrid Barajas

12:45 pm - 3:10 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

32h 25m2 stops Madrid Barajas Lisbon Humberto Delgado

$720Multiple Airlines

Mon, Sep 21 - Wed, Sep 30

10:55 pm - 5:45 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

12h 50m1 stop Munich Franz Josef Strauss

7:30 am - 8:05 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

18h 35m1 stop Munich Franz Josef Strauss

$722Lufthansa

Wed, Nov 11 - Wed, Nov 18

10:45 am - 4:10 pmBWI Baltimore/Washington-BIO Bilbao

23h 25m2 stops Chicago O'Hare Intl Brussels Bruxelles-National

6:45 am - 8:57 pmBIO Bilbao-BWI Baltimore/Washington

20h 12m2 stops Frankfurt am Main Chicago O'Hare Intl

$743United Airlines

Sun, Jan 24 - Thu, Jan 28

11:05 am - 4:10 pmDCA Washington, D.C. Reagan-National-BIO Bilbao

23h 05m2 stops Newark Brussels Bruxelles-National

12:25 pm - 10:29 amBIO Bilbao-DCA Washington, D.C. Reagan-National

52h 04m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

$756United Airlines

Sun, Nov 29 - Thu, Dec 3

5:05 pm - 5:35 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

18h 30m1 stop Lisbon Humberto Delgado

12:15 pm - 8:35 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

14h 20m1 stop Lisbon Humberto Delgado

$776TAP AIR PORTUGAL

Fri, Oct 16 - Fri, Oct 23

5:45 pm - 11:30 amIAD Washington, D.C. Dulles Intl-BIO Bilbao

11h 45m1 stop Lisbon Humberto Delgado

6:40 pm - 3:15 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

26h 35m1 stop Lisbon Humberto Delgado

$776TAP AIR PORTUGAL

Wed, Oct 14 - Sun, Nov 1

10:20 pm - 5:55 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

13h 35m1 stop Munich Franz Josef Strauss

6:50 am - 1:35 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

12h 45m1 stop Frankfurt am Main

$777Lufthansa

Mon, Sep 21 - Wed, Sep 30

Cheap last minute flights

Enter your travel dates to find the best prices.

9:00 pm - 7:35 amIAD Washington, D.C. Dulles Intl-BIO Bilbao

28h 35m3 stops Casablanca Mohamed V Malaga Madrid Barajas

9:05 pm - 3:10 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

24h 05m2 stops Madrid Barajas Lisbon Humberto Delgado

$845Multiple Airlines

Mon, Aug 17 - Tue, Sep 1

5:40 pm - 10:40 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

23h 00m2 stops Lisbon Humberto Delgado London Heathrow

4:50 pm - 3:10 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

28h 20m2 stops Madrid Barajas Lisbon Humberto Delgado

$874Multiple Airlines

Mon, Aug 17 - Tue, Sep 1

10:20 pm - 5:55 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

13h 35m1 stop Munich Franz Josef Strauss

6:50 am - 4:05 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

15h 15m1 stop Frankfurt am Main

$879Lufthansa

Mon, Aug 17 - Tue, Sep 1

10:20 pm - 5:55 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

13h 35m1 stop Munich Franz Josef Strauss

6:50 am - 4:05 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

15h 15m1 stop Frankfurt am Main

$909Lufthansa

Mon, Aug 17 - Tue, Sep 1

9:45 am - 1:20 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

21h 35m2 stops Montreal Pierre Elliott Trudeau Intl Frankfurt am Main

11:55 am - 7:25 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

13h 30m1 stop Munich Franz Josef Strauss

$920Multiple Airlines

Mon, Aug 17 - Tue, Sep 1

12:29 pm - 9:50 amIAD Washington, D.C. Dulles Intl-BIO Bilbao

15h 21m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

6:45 am - 3:35 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

14h 50m1 stop Amsterdam Schiphol

$928Delta

Mon, Aug 17 - Tue, Sep 1

1:00 pm - 10:45 amBWI Baltimore/Washington-BIO Bilbao

15h 45m2 stops Chicago O'Hare Intl Newark

6:50 am - 9:29 pmBIO Bilbao-BWI Baltimore/Washington

20h 39m2 stops Frankfurt am Main Chicago O'Hare Intl

$1,047United Airlines

Sat, Aug 15 - Sat, Aug 22

10:20 pm - 5:55 pmIAD Washington, D.C. Dulles Intl-BIO Bilbao

13h 35m1 stop Munich Franz Josef Strauss

6:50 am - 4:05 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

15h 15m1 stop Frankfurt am Main

$1,344Lufthansa

Sun, Aug 16 - Thu, Aug 20

10:35 pm - 11:40 amIAD Washington, D.C. Dulles Intl-BIO Bilbao

31h 05m1 stop Lisbon Humberto Delgado

12:15 pm - 3:10 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

32h 55m1 stop Lisbon Humberto Delgado

$3,387TAP AIR PORTUGAL

Mon, Aug 17 - Fri, Aug 28

10:35 pm - 11:40 amIAD Washington, D.C. Dulles Intl-BIO Bilbao

31h 05m1 stop Lisbon Humberto Delgado

12:15 pm - 8:35 pmBIO Bilbao-IAD Washington, D.C. Dulles Intl

14h 20m1 stop Lisbon Humberto Delgado

$3,388TAP AIR PORTUGAL

Mon, Aug 17 - Fri, Aug 28

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Royal Air Maroc flights from Washington, D.C. to Bilbao

Our best Royal Air Maroc deals on Washington, D.C. to Bilbao flight tickets

Royal Air Maroc

Oct 9

IAD9:00 pmWashington, D.C. Dulles Intl

16h 35m

1 stop

BIO7:35 pmBilbao

Oct 17

BIO8:35 pmBilbao

28h 25m

1 stop

IAD7:00 pmWashington, D.C. Dulles Intl

$746

Royal Air Maroc

Oct 9

IAD9:00 pmWashington, D.C. Dulles Intl

16h 35m

1 stop

BIO7:35 pmBilbao

Oct 17

BIO8:35 pmBilbao

28h 25m

1 stop

IAD7:00 pmWashington, D.C. Dulles Intl

$764

Royal Air Maroc

Aug 16

IAD9:00 pmWashington, D.C. Dulles Intl

16h 35m

1 stop

BIO7:35 pmBilbao

Aug 20

BIO8:35 pmBilbao

28h 25m

1 stop

IAD7:00 pmWashington, D.C. Dulles Intl

$1,298

Iberia flights from Washington, D.C. to Bilbao

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

Iberia

Sep 27

DCA1:00 pmWashington, D.C. Reagan-National

13h 30m

2 stops

BIO8:30 amBilbao

Oct 4

BIO9:15 amBilbao

19h 55m

2 stops

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

$911

Iberia

Sep 6

DCA4:59 pmWashington, D.C. Reagan-National

17h 56m

2 stops

BIO4:55 pmBilbao

Sep 12

BIO9:35 pmBilbao

53h 55m

2 stops

DCA9:30 pmWashington, D.C. Reagan-National

$1,015

Iberia

Sep 15

DCA12:59 pmWashington, D.C. Reagan-National

13h 31m

2 stops

BIO8:30 amBilbao

Sep 30

BIO9:15 amBilbao

18h 15m

2 stops

DCA9:30 pmWashington, D.C. Reagan-National

$1,061

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Bilbao

IAD Washington, D.C. Dulles Intl - BIO Bilbao

IADBIO

Washington, D.C. Dulles Intl

Wed 11/11

8:10 pm-5:45 pm

2 stops15h 35m

Bilbao

Wed 11/18

9:50 am-5:00 pm

1 stop13h 10m

$703

Washington, D.C.Bilbao

IAD Washington, D.C. Dulles Intl - BIO Bilbao

IADBIO

Washington, D.C. Dulles Intl

Mon 11/9

10:55 pm-11:10 pm

1 stop18h 15m

Bilbao

Thu 11/19

6:45 am-3:55 pm

1 stop15h 10m

$706

Washington, D.C.Bilbao

IAD Washington, D.C. Dulles Intl - BIO Bilbao

IADBIO

Washington, D.C. Dulles Intl

Mon 11/9

10:55 pm-11:10 pm

1 stop18h 15m

Bilbao

Thu 11/19

7:30 am-8:10 pm

2 stops18h 40m

$713

Washington, D.C.Bilbao

IAD Washington, D.C. Dulles Intl - BIO Bilbao

IADBIO

Washington, D.C. Dulles Intl

Mon 9/21

5:40 pm-8:15 pm

2 stops20h 35m

Bilbao

Wed 9/30

12:45 pm-3:10 pm

2 stops32h 25m

$720

Washington, D.C.Bilbao

IAD Washington, D.C. Dulles Intl - BIO Bilbao

IADBIO

Washington, D.C. Dulles Intl

Wed 11/11

10:55 pm-5:45 pm

1 stop12h 50m

Bilbao

Wed 11/18

7:30 am-8:05 pm

1 stop18h 35m

$722

BaltimoreBilbao

BWI Baltimore/Washington - BIO Bilbao

BWIBIO

Baltimore/Washington

Sun 1/24

10:45 am-4:10 pm

2 stops23h 25m

Bilbao

Thu 1/28

6:45 am-8:57 pm

2 stops20h 12m

$743

Washington, D.C.Bilbao

DCA Washington, D.C. Reagan-National - BIO Bilbao

DCABIO

Washington, D.C. Reagan-National

Sun 11/29

11:05 am-4:10 pm

2 stops23h 05m

Bilbao

Thu 12/3

12:25 pm-10:29 am

2 stops52h 04m

$756

Washington, D.C.Bilbao

IAD Washington, D.C. Dulles Intl - BIO Bilbao

IADBIO

Washington, D.C. Dulles Intl

Fri 10/16

5:05 pm-5:35 pm

1 stop18h 30m

Bilbao

Fri 10/23

12:15 pm-8:35 pm

1 stop14h 20m

$776

Washington, D.C.Bilbao

IAD Washington, D.C. Dulles Intl - BIO Bilbao

IADBIO

Washington, D.C. Dulles Intl

Wed 10/14

5:45 pm-11:30 am

1 stop11h 45m

Bilbao

Sun 11/1

6:40 pm-3:15 pm

1 stop26h 35m

$776

Quickest round-trip

Washington, D.C.Bilbao

IAD Washington, D.C. Dulles Intl - BIO Bilbao

IADBIO

Washington, D.C. Dulles Intl

Mon 9/21

10:20 pm-5:55 pm

1 stop13h 35m

Bilbao

Wed 9/30

6:50 am-1:35 pm

1 stop12h 45m

$777

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 cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Washington, D.C. is in January. Flight prices, which tend to average around $533, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in January, then November is your next best option. Flight prices from Washington, D.C. to Bilbao during November average around $639.

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

You could potentially save up to 25% 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

Fastest flight time	11h 45m
Direct flights	None

The fastest flight from Washington, D.C. to Bilbao takes 11h 45m

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

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Frequently asked questions about flying from Washington, D.C. to Bilbao

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 11h 45m.
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 3 operators available for flights from Washington, D.C. to Bilbao Airport as of August 2026.
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 TAP AIR PORTUGAL (34% of total bookings). The next most popular airlines are United Airlines (33%), Lufthansa (21%), and Delta (12%).

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 7.2 2,368 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $470	Free Cancellation	Rating 6.8 8,188 reviews	Search Lufthansa flights
United Airlines	PriceFrom $571	Free Cancellation	Rating 7.4 10,113 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 $260

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 10/4. 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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Royal Air Maroc flights from Washington, D.C. to Bilbao

Our best Royal Air Maroc deals on Washington, D.C. to Bilbao flight tickets

Iberia flights from Washington, D.C. to Bilbao

Our best Iberia 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

What is the cheapest month to fly to Bilbao?

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

What is the cheapest airline that flies 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?

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

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

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

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An easier way to manage your Bilbao trip

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