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

Air Canada, KLM, and Delta 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 Lisbon (LIS) offer the lowest average round-trip price of $545.

What airlines fly to Bilbao?

Lufthansa, United Airlines and TAP AIR PORTUGAL 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 31% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 4 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

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 45m on average. Another popular route from Washington, D.C. to Bilbao is flying from Baltimore to Bilbao, which will take roughly 14h 50m. 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: 40% 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?

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

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.

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 4 operators available for flights from Washington, D.C. to Bilbao Airport as of July 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.

$306 Cheap Flights from Washington, D.C. to Bilbao in 2026

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 $981 to $1,383. The lowest price recently found on this route was $669.

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.

8:30 pm - 10:55 am

BWI

BIO

32h 25m

3 stops

7:20 pm - 7:25 pm

BIO

BWI

30h 05m

3 stops

$669Multiple Airlines

Mon, Aug 24 - Mon, Aug 31

5:45 pm - 11:30 am

IAD

BIO

11h 45m

1 stop

12:25 pm - 8:35 pm

BIO

IAD

14h 10m

1 stop

$669TAP AIR PORTUGAL

Wed, Aug 19 - Wed, Aug 26

5:45 pm - 11:30 am

IAD

BIO

11h 45m

1 stop

12:15 pm - 8:35 pm

BIO

IAD

14h 20m

1 stop

$670TAP AIR PORTUGAL

Wed, Aug 19 - Thu, Aug 27

10:20 pm - 11:25 pm

IAD

BIO

19h 05m

1 stop

6:50 am - 1:35 pm

BIO

IAD

12h 45m

1 stop

$719Lufthansa

Wed, Sep 30 - Thu, Oct 8

9:45 pm - 5:30 pm

IAD

BIO

13h 45m

1 stop

12:00 pm - 3:35 pm

BIO

IAD

33h 35m

1 stop

$725Delta

Tue, Sep 29 - Wed, Oct 7

10:20 pm - 5:55 pm

IAD

BIO

13h 35m

1 stop

6:45 am - 1:35 pm

BIO

IAD

12h 50m

1 stop

$726Lufthansa

Wed, Oct 7 - Fri, Oct 16

5:45 pm - 12:50 pm

IAD

BIO

13h 05m

1 stop

6:45 am - 3:55 pm

BIO

IAD

15h 10m

1 stop

$727United Airlines

Mon, Nov 16 - Fri, Nov 20

4:20 pm - 5:55 pm

DCA

BIO

19h 35m

2 stops

6:50 am - 10:20 am

BIO

DCA

33h 30m

2 stops

$733Air Canada

Tue, Sep 29 - Thu, Oct 8

6:17 am - 9:50 am

BWI

BIO

21h 33m

2 stops

12:00 pm - 6:46 pm

BIO

BWI

36h 46m

2 stops

$740Delta

Mon, Oct 5 - Thu, Oct 15

6:10 am - 11:05 pm

BWI

BIO

34h 55m

2 stops

6:45 am - 9:23 pm

BIO

BWI

20h 38m

2 stops

$742United Airlines

Mon, Nov 16 - Fri, Nov 20

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TAP AIR PORTUGAL flights from Washington, D.C. to Bilbao

Our best TAP AIR PORTUGAL deals on Washington, D.C. to Bilbao flight tickets

TAP AIR PORTUGAL

Aug 19

IAD5:45 pmWashington, D.C. Dulles Intl

11h 45m

1 stop

BIO11:30 amBilbao

Aug 26

BIO12:25 pmBilbao

14h 10m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$669

TAP AIR PORTUGAL

Aug 19

IAD5:45 pmWashington, D.C. Dulles Intl

11h 45m

1 stop

BIO11:30 amBilbao

Aug 27

BIO12:15 pmBilbao

14h 20m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$670

TAP AIR PORTUGAL

Aug 24

IAD10:35 pmWashington, D.C. Dulles Intl

13h 25m

1 stop

BIO6:00 pmBilbao

Aug 31

BIO12:25 pmBilbao

32h 45m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

$677

Lufthansa flights from Washington, D.C. to Bilbao

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

Lufthansa

Sep 30

IAD10:20 pmWashington, D.C. Dulles Intl

19h 05m

1 stop

BIO11:25 pmBilbao

Oct 8

BIO6:50 amBilbao

12h 45m

1 stop

IAD1:35 pmWashington, D.C. Dulles Intl

$719

Lufthansa

Oct 7

IAD10:20 pmWashington, D.C. Dulles Intl

13h 35m

1 stop

BIO5:55 pmBilbao

Oct 16

BIO6:45 amBilbao

12h 50m

1 stop

IAD1:35 pmWashington, D.C. Dulles Intl

$726

Lufthansa

Oct 9

IAD10:20 pmWashington, D.C. Dulles Intl

13h 35m

1 stop

BIO5:55 pmBilbao

Oct 15

BIO6:50 amBilbao

12h 45m

1 stop

IAD1:35 pmWashington, D.C. Dulles Intl

$776

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Mon 8/24

8:30 pm-10:55 am

3 stops32h 25m

Bilbao

Mon 8/31

7:20 pm-7:25 pm

3 stops30h 05m

$669

Quickest round-trip

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 8/19

5:45 pm-11:30 am

1 stop11h 45m

Bilbao

Wed 8/26

12:25 pm-8:35 pm

1 stop14h 10m

$669

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 8/19

5:45 pm-11:30 am

1 stop11h 45m

Bilbao

Thu 8/27

12:15 pm-8:35 pm

1 stop14h 20m

$670

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 9/30

10:20 pm-11:25 pm

1 stop19h 05m

Bilbao

Thu 10/8

6:50 am-1:35 pm

1 stop12h 45m

$719

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 9/29

9:45 pm-5:30 pm

1 stop13h 45m

Bilbao

Wed 10/7

12:00 pm-3:35 pm

1 stop33h 35m

$725

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/7

10:20 pm-5:55 pm

1 stop13h 35m

Bilbao

Fri 10/16

6:45 am-1:35 pm

1 stop12h 50m

$726

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Mon 11/16

5:45 pm-12:50 pm

1 stop13h 05m

Bilbao

Fri 11/20

6:45 am-3:55 pm

1 stop15h 10m

$727

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Tue 9/29

4:20 pm-5:55 pm

2 stops19h 35m

Bilbao

Thu 10/8

6:50 am-10:20 am

2 stops33h 30m

$733

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Mon 10/5

6:17 am-9:50 am

2 stops21h 33m

Bilbao

Thu 10/15

12:00 pm-6:46 pm

2 stops36h 46m

$740

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Mon 11/16

6:10 am-11:05 pm

2 stops34h 55m

Bilbao

Fri 11/20

6:45 am-9:23 pm

2 stops20h 38m

$742

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 January. Flight prices, which tend to average around $334, 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 April is your next best option. Flight prices from Washington, D.C. to Bilbao during April average around $421.

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

You could potentially save up to 17% 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.

Search flight deals

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 4 operators available for flights from Washington, D.C. to Bilbao Airport as of July 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 United Airlines (33% of total bookings). The next most popular airlines are TAP AIR PORTUGAL (32%), Lufthansa (22%), and Delta (13%).

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 2,310 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $470	Free Cancellation	Rating 6.8 8,109 reviews	Search Lufthansa flights
United Airlines	PriceFrom $514	Free Cancellation	Rating 7.4 9,915 reviews	Search United Airlines flights
Iberia	PriceFrom $515	Free Cancellation	Rating 7.0 3,249 reviews	Search Iberia flights

Getxo

Laredo

Lekeitio

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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 $306

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 8/10. 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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TAP AIR PORTUGAL flights from Washington, D.C. to Bilbao

Our best TAP AIR PORTUGAL deals on Washington, D.C. to Bilbao flight tickets

Lufthansa flights from Washington, D.C. to Bilbao

Our best Lufthansa 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 typical price of a round-trip flight between Washington, D.C. and 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

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

Fastest flight time

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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

Traveling to a place near Bilbao?

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