Cheap flights from Washington, D.C. to Bilbao from $253

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 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Washington, D.C. to Bilbao (WAS-BIO)

Cheap round-trip flights

TAP AIR PORTUGAL Logo
10:20 pm - 5:35 pmIAD-BIO
13h 15m1 stop
TAP AIR PORTUGAL Logo
6:40 pm - 3:15 pmBIO-IAD
26h 35m1 stop
$414TAP AIR PORTUGAL
Find Deal
Fri, Oct 17 - Sun, Nov 2
United Airlines Logo
5:40 pm - 11:05 amIAD-BIO
11h 25m1 stop
United Airlines Logo
7:25 am - 9:05 pmBIO-IAD
18h 40m1 stop
$433United Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
Air Canada Logo
9:40 am - 6:20 pmDCA-BIO
26h 40m2 stops
Air Canada Logo
7:25 am - 10:35 pmBIO-DCA
20h 10m2 stops
$452Air Canada
Find Deal
Tue, Oct 21 - Tue, Oct 28
KLM Logo
9:20 pm - 10:00 pmIAD-BIO
18h 40m1 stop
KLM Logo
7:10 am - 7:15 pmBIO-IAD
18h 05m1 stop
$456KLM
Find Deal
Wed, Oct 1 - Wed, Oct 22
KLM Logo
9:35 pm - 10:25 amIAD-BIO
30h 50m1 stop
KLM Logo
5:15 pm - 3:35 pmBIO-IAD
28h 20m1 stop
$459KLM
Find Deal
Mon, Oct 6 - Mon, Oct 13
Delta Logo
12:08 pm - 10:25 amIAD-BIO
16h 17m2 stops
Delta Logo
7:10 am - 7:15 pmBIO-IAD
18h 05m1 stop
$461Delta
Find Deal
Wed, Oct 1 - Wed, Oct 22
Delta Logo
6:18 am - 10:25 amBWI-BIO
22h 07m2 stops
Delta Logo
6:50 am - 11:13 pmBIO-BWI
22h 23m2 stops
$466Delta
Find Deal
Mon, Oct 6 - Wed, Oct 22
Lufthansa Logo
10:20 pm - 5:50 pmIAD-BIO
13h 30m1 stop
Lufthansa Logo
11:35 am - 9:05 pmBIO-IAD
14h 30m1 stop
$502Lufthansa
Find Deal
Thu, Oct 23 - Thu, Oct 30
Lufthansa Logo
10:20 pm - 6:20 pmIAD-BIO
14h 00m2 stops
Lufthansa Logo
7:15 am - 3:50 pmBIO-IAD
14h 35m2 stops
$531Lufthansa
Find Deal
Wed, Oct 1 - Wed, Oct 22
Iberia Logo
8:35 pm - 11:15 pmBWI-BIO
20h 40m3 stops
Iberia Logo
7:10 am - 6:45 pmBIO-BWI
17h 35m2 stops
$2,279Iberia
Find Deal
Thu, Nov 20 - Sun, Nov 30

Delta flights from Washington, D.C. to Bilbao

Our best Delta deals on Washington, D.C. to Bilbao flight tickets
Delta
Oct 1
IAD12:08 pmWashington, D.C. Dulles Intl
16h 17m
2 stops
BIO10:25 amBilbao
Oct 22
BIO7:10 amBilbao
18h 05m
1 stop
IAD7:15 pmWashington, D.C. Dulles Intl
Delta
Oct 6
BWI6:18 amBaltimore/Washington
22h 07m
2 stops
BIO10:25 amBilbao
Oct 22
BIO6:50 amBilbao
22h 23m
2 stops
BWI11:13 pmBaltimore/Washington
Delta
Oct 1
DCA11:10 amWashington, D.C. Reagan-National
17h 15m
2 stops
BIO10:25 amBilbao
Oct 22
BIO7:10 amBilbao
16h 00m
2 stops
DCA5:10 pmWashington, D.C. Reagan-National

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
18h 05m
1 stop
IAD7:15 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
KLM
Oct 21
BWI1:50 pmBaltimore/Washington
16h 05m
2 stops
BIO11:55 amBilbao
Oct 28
BIO11:55 amBilbao
16h 07m
2 stops
BWI11:02 pmBaltimore/Washington

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 8, 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

Fri 10/17

10:20 pm-5:35 pm

1 stop13h 15m

Bilbao

Sun 11/2

6:40 pm-3:15 pm

1 stop26h 35m

$414

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/22

5:40 pm-11:05 am

1 stop11h 25m

Bilbao

Wed 10/29

7:25 am-9:05 pm

1 stop18h 40m

$433

Washington, D.C.Bilbao

DCA - BIO

DCABIO

Washington, D.C. Reagan-National

Tue 10/21

9:40 am-6:20 pm

2 stops26h 40m

Bilbao

Tue 10/28

7:25 am-10:35 pm

2 stops20h 10m

$452

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/1

9:20 pm-10:00 pm

1 stop18h 40m

Bilbao

Wed 10/22

7:10 am-7:15 pm

1 stop18h 05m

$456

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Mon 10/6

9:35 pm-10:25 am

1 stop30h 50m

Bilbao

Mon 10/13

5:15 pm-3:35 pm

1 stop28h 20m

$459

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/1

12:08 pm-10:25 am

2 stops16h 17m

Bilbao

Wed 10/22

7:10 am-7:15 pm

1 stop18h 05m

$461

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Mon 10/6

6:18 am-10:25 am

2 stops22h 07m

Bilbao

Wed 10/22

6:50 am-11:13 pm

2 stops22h 23m

$466

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Thu 10/23

10:20 pm-5:50 pm

1 stop13h 30m

Bilbao

Thu 10/30

11:35 am-9:05 pm

1 stop14h 30m

$502

Washington, D.C.Bilbao

IAD - BIO

IADBIO

Washington, D.C. Dulles Intl

Wed 10/1

10:20 pm-6:20 pm

2 stops14h 00m

Bilbao

Wed 10/22

7:15 am-3:50 pm

2 stops14h 35m

$531

BaltimoreBilbao

BWI - BIO

BWIBIO

Baltimore/Washington

Thu 11/20

8:35 pm-11:15 pm

3 stops20h 40m

Bilbao

Sun 11/30

7:10 am-6:45 pm

2 stops17h 35m

$2,279

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $574.

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 41% 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
1,975 reviews
Search TAP AIR PORTUGAL flights
KLMPriceFrom $503Free CancellationRating
7.8
1,386 reviews
Search KLM flights
IberiaPriceFrom $509Free CancellationRating
7.0
2,921 reviews
Search Iberia flights
United AirlinesPriceFrom $514Free CancellationRating
7.4
8,944 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.

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.
1 adult
Wed 10/8
Wed 10/15

Find better results for your trip to Spain

Airports servicing Basque Country