Cheap flights from Washington, D.C. to Bilbao from $244

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

Cheap round-trip flights

TAP AIR PORTUGAL Logo
5:45 pm - 11:40 amIAD-BIO
11h 55m1 stop
TAP AIR PORTUGAL Logo
7:20 pm - 2:35 pmBIO-IAD
25h 15m1 stop
$410TAP AIR PORTUGAL
Find Deal
Sun, Oct 19 - Mon, Nov 3
Lufthansa Logo
10:20 pm - 5:50 pmIAD-BIO
13h 30m1 stop
Lufthansa Logo
11:50 am - 7:25 pmBIO-IAD
13h 35m1 stop
$414Lufthansa
Find Deal
Wed, Oct 15 - Wed, Oct 22
Multiple Airlines Logo
4:10 pm - 4:10 pmDCA-BIO
18h 00m2 stops
Multiple Airlines Logo
7:25 am - 9:56 pmBIO-DCA
20h 31m2 stops
$437Multiple Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
Iberia Logo
4:35 pm - 1:10 pmIAD-BIO
14h 35m2 stops
Iberia Logo
6:45 am - 3:00 pmBIO-IAD
14h 15m1 stop
$460Iberia
Find Deal
Wed, Oct 15 - Wed, Oct 22
Delta Logo
12:26 pm - 10:25 amBWI-BIO
15h 59m2 stops
Delta Logo
7:10 am - 5:34 pmBIO-BWI
16h 24m2 stops
$471Delta
Find Deal
Wed, Oct 15 - Wed, Oct 22
Delta Logo
11:10 am - 10:25 amDCA-BIO
17h 15m2 stops
Delta Logo
7:10 am - 5:10 pmBIO-DCA
16h 00m2 stops
$471Delta
Find Deal
Wed, Oct 15 - Wed, Oct 22
United Airlines Logo
3:00 pm - 4:10 pmDCA-BIO
19h 10m2 stops
United Airlines Logo
7:25 am - 11:59 pmBIO-DCA
22h 34m2 stops
$473United Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
United Airlines Logo
5:40 pm - 10:50 amIAD-BIO
11h 10m1 stop
United Airlines Logo
6:45 am - 8:15 pmBIO-IAD
19h 30m1 stop
$502United Airlines
Find Deal
Tue, Nov 4 - Sun, Nov 9
American Airlines Logo
11:09 am - 8:30 amBWI-BIO
15h 21m2 stops
American Airlines Logo
6:45 am - 7:30 pmBIO-BWI
18h 45m2 stops
$575American Airlines
Find Deal
Sat, Nov 15 - Sat, Nov 22
American Airlines Logo
11:40 am - 8:30 amDCA-BIO
15h 50m2 stops
American Airlines Logo
6:45 am - 7:13 pmBIO-DCA
17h 28m2 stops
$630American Airlines
Find Deal
Sat, Mar 14 - Sat, Mar 21

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
15h 10m
1 stop
IAD4:20 pmWashington, D.C. Dulles Intl
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

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

Our best American Airlines deals on Washington, D.C. to Bilbao flight tickets
American Airlines
Nov 15
BWI11:09 amBaltimore/Washington
15h 21m
2 stops
BIO8:30 amBilbao
Nov 22
BIO6:45 amBilbao
18h 45m
2 stops
BWI7:30 pmBaltimore/Washington
American Airlines
Mar 14
DCA11:40 amWashington, D.C. Reagan-National
15h 50m
2 stops
BIO8:30 amBilbao
Mar 21
BIO6:45 amBilbao
17h 28m
2 stops
DCA7:13 pmWashington, D.C. Reagan-National
American Airlines
Oct 19
DCA2:55 pmWashington, D.C. Reagan-National
15h 50m
2 stops
BIO12:45 pmBilbao
Nov 3
BIO6:45 amBilbao
18h 11m
2 stops
DCA6:56 pmWashington, D.C. Reagan-National

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 September 17, 2025.
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

Sun 10/19

5:45 pm-11:40 am

1 stop11h 55m

Bilbao

Mon 11/3

7:20 pm-2:35 pm

1 stop25h 15m

$410

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/15

10:20 pm-5:50 pm

1 stop13h 30m

Bilbao

Wed 10/22

11:50 am-7:25 pm

1 stop13h 35m

$414

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Wed 11/19

4:10 pm-4:10 pm

2 stops18h 00m

Bilbao

Wed 11/26

7:25 am-9:56 pm

2 stops20h 31m

$437

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/15

4:35 pm-1:10 pm

2 stops14h 35m

Bilbao

Wed 10/22

6:45 am-3:00 pm

1 stop14h 15m

$460

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Wed 10/15

12:26 pm-10:25 am

2 stops15h 59m

Bilbao

Wed 10/22

7:10 am-5:34 pm

2 stops16h 24m

$471

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Wed 10/15

11:10 am-10:25 am

2 stops17h 15m

Bilbao

Wed 10/22

7:10 am-5:10 pm

2 stops16h 00m

$471

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Wed 12/3

3:00 pm-4:10 pm

2 stops19h 10m

Bilbao

Wed 12/10

7:25 am-11:59 pm

2 stops22h 34m

$473

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Tue 11/4

5:40 pm-10:50 am

1 stop11h 10m

Bilbao

Sun 11/9

6:45 am-8:15 pm

1 stop19h 30m

$502

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Sat 11/15

11:09 am-8:30 am

2 stops15h 21m

Bilbao

Sat 11/22

6:45 am-7:30 pm

2 stops18h 45m

$575

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Sat 3/14

11:40 am-8:30 am

2 stops15h 50m

Bilbao

Sat 3/21

6:45 am-7:13 pm

2 stops17h 28m

$630

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 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 $573.

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 37% 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.
  • 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?

  • 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 $447Free CancellationRating
7.1
1,977 reviews
Search TAP AIR PORTUGAL flights
KLMPriceFrom $503Free CancellationRating
7.8
1,386 reviews
Search KLM flights
IberiaPriceFrom $509Free CancellationRating
7.0
2,925 reviews
Search Iberia flights
United AirlinesPriceFrom $514Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
LufthansaPriceFrom $530Free CancellationRating
6.8
7,409 reviews
Search Lufthansa 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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