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Cheap flights from Washington, D.C. to Bilbao from $248

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 2/1. 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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0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
10:35 pm - 6:05 pm
IAD
-
BIO
13h 30m
1 stop
TAP AIR PORTUGAL Logo
6:50 pm - 3:05 pm
BIO
-
IAD
26h 15m
1 stop
$404TAP AIR PORTUGAL
Sat, Apr 25 - Tue, May 5
Multiple Airlines Logo
6:20 pm - 4:55 pm
IAD
-
BIO
16h 35m
2 stops
Multiple Airlines Logo
9:15 am - 5:30 pm
BIO
-
IAD
13h 15m
1 stop
$438Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
Iberia Logo
6:00 pm - 12:50 pm
IAD
-
BIO
12h 50m
1 stop
Iberia Logo
9:15 am - 5:30 pm
BIO
-
IAD
13h 15m
1 stop
$440Iberia
Tue, Mar 3 - Tue, Mar 10
Lufthansa Logo
10:20 pm - 11:25 pm
IAD
-
BIO
19h 05m
1 stop
Lufthansa Logo
7:15 am - 7:25 pm
BIO
-
IAD
18h 10m
1 stop
$441Lufthansa
Tue, Apr 14 - Thu, Apr 23
Iberia Logo
5:05 pm - 12:50 pm
IAD
-
BIO
13h 45m
2 stops
Iberia Logo
6:45 am - 5:30 pm
BIO
-
IAD
15h 45m
1 stop
$446Iberia
Tue, Mar 3 - Tue, Mar 10
Lufthansa Logo
10:20 pm - 5:55 pm
IAD
-
BIO
13h 35m
1 stop
Lufthansa Logo
7:15 am - 7:25 pm
BIO
-
IAD
18h 10m
1 stop
$454Lufthansa
Tue, Apr 14 - Fri, Apr 24
Delta Logo
10:53 am - 9:50 am
BWI
-
BIO
16h 57m
2 stops
Delta Logo
7:10 am - 7:22 pm
BIO
-
BWI
18h 12m
2 stops
$471Delta
Sun, Apr 12 - Wed, Apr 22
Delta Logo
8:40 am - 9:50 am
DCA
-
BIO
19h 10m
2 stops
Delta Logo
7:10 am - 5:23 pm
BIO
-
DCA
16h 13m
2 stops
$471Delta
Mon, Apr 13 - Wed, Apr 22
United Airlines Logo
10:30 am - 10:50 am
BWI
-
BIO
18h 20m
3 stops
United Airlines Logo
6:45 am - 9:42 pm
BIO
-
BWI
19h 57m
2 stops
$492United Airlines
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
10:30 am - 10:50 am
BWI
-
BIO
18h 20m
3 stops
United Airlines Logo
6:45 am - 9:42 pm
BIO
-
BWI
19h 57m
3 stops
$500United Airlines
Tue, Mar 3 - Tue, Mar 10

Iberia flights from Washington, D.C. to Bilbao

Our best Iberia deals on Washington, D.C. to Bilbao flight tickets
Iberia
Mar 3
IAD6:00 pmWashington, D.C. Dulles Intl
12h 50m
1 stop
BIO12:50 pmBilbao
Mar 10
BIO9:15 amBilbao
13h 15m
1 stop
IAD5:30 pmWashington, D.C. Dulles Intl
$440
Iberia
Mar 3
IAD5:05 pmWashington, D.C. Dulles Intl
13h 45m
2 stops
BIO12:50 pmBilbao
Mar 10
BIO6:45 amBilbao
15h 45m
1 stop
IAD5:30 pmWashington, D.C. Dulles Intl
$446
Iberia
Mar 2
DCA1:44 pmWashington, D.C. Reagan-National
21h 11m
2 stops
BIO4:55 pmBilbao
Mar 9
BIO9:35 pmBilbao
24h 02m
2 stops
DCA4:37 pmWashington, D.C. Reagan-National
$456

American Airlines flights from Washington, D.C. to Bilbao

Our best American Airlines deals on Washington, D.C. to Bilbao flight tickets
American Airlines
Feb 3
IAD6:00 pmWashington, D.C. Dulles Intl
12h 50m
1 stop
BIO12:50 pmBilbao
Feb 18
BIO6:45 amBilbao
22h 08m
2 stops
IAD10:53 pmWashington, D.C. Dulles Intl
$452
American Airlines
Mar 3
BWI12:38 pmBaltimore/Washington
13h 52m
2 stops
BIO8:30 amBilbao
Mar 10
BIO9:15 amBilbao
17h 04m
2 stops
BWI9:19 pmBaltimore/Washington
$456
American Airlines
Feb 24
IAD6:00 pmWashington, D.C. Dulles Intl
16h 55m
1 stop
BIO4:55 pmBilbao
Mar 1
BIO9:15 amBilbao
13h 15m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
$492

momondo 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, momondo users made 832,500 searches. Data last updated January 18, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Sat 4/25

10:35 pm-6:05 pm

1 stop13h 30m

Bilbao

Tue 5/5

6:50 pm-3:05 pm

1 stop26h 15m

$404

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 3/3

6:20 pm-4:55 pm

2 stops16h 35m

Bilbao

Tue 3/10

9:15 am-5:30 pm

1 stop13h 15m

$438

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 3/3

6:00 pm-12:50 pm

1 stop12h 50m

Bilbao

Tue 3/10

9:15 am-5:30 pm

1 stop13h 15m

$440

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 4/14

10:20 pm-11:25 pm

1 stop19h 05m

Bilbao

Thu 4/23

7:15 am-7:25 pm

1 stop18h 10m

$441

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 3/3

5:05 pm-12:50 pm

2 stops13h 45m

Bilbao

Tue 3/10

6:45 am-5:30 pm

1 stop15h 45m

$446

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 4/14

10:20 pm-5:55 pm

1 stop13h 35m

Bilbao

Fri 4/24

7:15 am-7:25 pm

1 stop18h 10m

$454

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Sun 4/12

10:53 am-9:50 am

2 stops16h 57m

Bilbao

Wed 4/22

7:10 am-7:22 pm

2 stops18h 12m

$471

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Mon 4/13

8:40 am-9:50 am

2 stops19h 10m

Bilbao

Wed 4/22

7:10 am-5:23 pm

2 stops16h 13m

$471

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Tue 3/3

10:30 am-10:50 am

3 stops18h 20m

Bilbao

Tue 3/10

6:45 am-9:42 pm

2 stops19h 57m

$492

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Tue 3/3

10:30 am-10:50 am

3 stops18h 20m

Bilbao

Tue 3/10

6:45 am-9:42 pm

3 stops19h 57m

$500

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bilbao from

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?

The cheapest month to fly to Bilbao from Washington, D.C. is in March. Flight prices, which tend to average around $560, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in March, then October is your next best option. Flight prices from Washington, D.C. to Bilbao during October average around $570.

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 55m

Direct flights

None
The fastest flight from Washington, D.C. to Bilbao takes 11h 55m
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 11h 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?

  • 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?

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 PORTUGALPriceFrom $421Free CancellationRating
7.1
2,122 reviews
Search TAP AIR PORTUGAL flights
LufthansaPriceFrom $492Free CancellationRating
6.8
7,728 reviews
Search Lufthansa flights
KLMPriceFrom $503Free CancellationRating
7.7
1,441 reviews
Search KLM flights
IberiaPriceFrom $509Free CancellationRating
7.0
3,090 reviews
Search Iberia flights
United AirlinesPriceFrom $514Free CancellationRating
7.4
9,174 reviews
Search United Airlines flights

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
Getxo
Laredo
Lekeitio

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.

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