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

TAP AIR PORTUGAL, SWISS, and American Airlines 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 11h 34m on average. Another popular route from Washington, D.C. to Bilbao is flying from Baltimore to Bilbao, which will take roughly 14h. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Bilbao?

United Airlines, Iberia and Lufthansa are the top three most popular airlines that fly to Bilbao from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 5 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

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 5 operators available for flights from Washington, D.C. to Bilbao Airport as of July 2025.

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.

$281 Cheap Flights from Washington, D.C. to Bilbao in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

Round-trip

One-way

Last minute

Cheap round-trip flights

10:20 pm - 11:25 pmIAD-BIO

19h 05m1 stop

6:45 am - 9:05 pmBIO-IAD

20h 20m2 stops

$468

Find Deal

Tue, Sep 30 - Wed, Oct 8

10:20 pm - 8:05 pmIAD-BIO

15h 45m2 stops

8:20 am - 8:50 pmBIO-IAD

18h 30m2 stops

$470

Find Deal

Tue, Sep 30 - Wed, Oct 8

10:20 pm - 11:25 pmIAD-BIO

19h 05m1 stop

6:45 am - 3:50 pmBIO-IAD

15h 05m1 stop

$485Lufthansa

Find Deal

Tue, Sep 30 - Wed, Oct 8

5:40 pm - 6:05 pmIAD-BIO

18h 25m1 stop

12:45 pm - 8:15 pmBIO-IAD

13h 30m1 stop

$492United Airlines

Find Deal

Wed, Nov 12 - Wed, Nov 19

5:10 pm - 6:05 pmIAD-BIO

18h 55m2 stops

12:45 pm - 8:15 pmBIO-IAD

13h 30m1 stop

$496United Airlines

Find Deal

Wed, Nov 12 - Wed, Nov 19

3:30 pm - 11:30 amBWI-BIO

14h 00m2 stops

12:15 pm - 12:12 amBIO-BWI

17h 57m2 stops

$521Delta

Find Deal

Wed, Nov 12 - Wed, Nov 19

6:10 pm - 6:20 pmIAD-BIO

18h 10m1 stop

6:45 am - 1:30 pmBIO-IAD

12h 45m1 stop

$537Lufthansa

Find Deal

Thu, Oct 2 - Tue, Oct 14

12:35 pm - 10:25 amIAD-BIO

15h 50m2 stops

11:05 am - 7:15 pmBIO-IAD

14h 10m1 stop

$541Delta

Find Deal

Tue, Sep 16 - Thu, Sep 25

6:30 pm - 10:00 pmIAD-BIO

21h 30m1 stop

5:15 pm - 3:35 pmBIO-IAD

28h 20m1 stop

$607KLM

Find Deal

Fri, Aug 15 - Mon, Aug 25

9:20 pm - 10:00 pmIAD-BIO

18h 40m1 stop

5:15 pm - 3:35 pmBIO-IAD

28h 20m1 stop

$645KLM

Find Deal

Fri, Aug 22 - Mon, Aug 25

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

Sep 28

IAD5:45 pmWashington, D.C. Dulles Intl

11h 55m

1 stop

BIO11:40 amBilbao

Oct 12

BIO7:45 pmBilbao

31h 05m

1 stop

IAD8:50 pmWashington, D.C. Dulles Intl

$478

Find similar

TAP AIR PORTUGAL

Aug 18

IAD10:20 pmWashington, D.C. Dulles Intl

13h 40m

1 stop

BIO6:00 pmBilbao

Aug 25

BIO12:25 pmBilbao

32h 55m

1 stop

IAD3:20 pmWashington, D.C. Dulles Intl

$487

Find similar

TAP AIR PORTUGAL

Aug 30

IAD10:35 pmWashington, D.C. Dulles Intl

13h 30m

1 stop

BIO6:05 pmBilbao

Sep 5

BIO12:15 pmBilbao

14h 35m

1 stop

IAD8:50 pmWashington, D.C. Dulles Intl

$630

Find similar

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

BIO6:45 amBilbao

15h 05m

1 stop

IAD3:50 pmWashington, D.C. Dulles Intl

$485

Find similar

Lufthansa

Oct 2

IAD6:10 pmWashington, D.C. Dulles Intl

18h 10m

1 stop

BIO6:20 pmBilbao

Oct 14

BIO6:45 amBilbao

12h 45m

1 stop

IAD1:30 pmWashington, D.C. Dulles Intl

$537

Find similar

Lufthansa

Oct 5

IAD10:20 pmWashington, D.C. Dulles Intl

13h 30m

1 stop

BIO5:50 pmBilbao

Oct 11

BIO7:15 pmBilbao

24h 15m

1 stop

IAD1:30 pmWashington, D.C. Dulles Intl

$560

Find similar

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

Other information

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.

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

Best Price Found	$281
Fastest flight time	9h 55m
Direct flights	None
Airports in Bilbao	1 airport

The best one-way flight to Bilbao from Washington, D.C. in the past 72 hours is $281. The best round-trip flight deal from Washington, D.C. to Bilbao found on momondo in the last 72 hours is $468.

The fastest flight from Washington, D.C. to Bilbao takes 9h 55m

There are no direct flights from Washington, D.C. to Bilbao. Popular non-direct routes for this connection are Washington, D.C. Reagan-National Airport - Bilbao Airport, Washington, D.C. Dulles Intl Airport - Bilbao Airport and Baltimore/Washington Airport - Bilbao Airport.

There is 1 airport near Bilbao: Bilbao (BIO)

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 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 5 operators available for flights from Washington, D.C. to Bilbao Airport as of July 2025.
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 (30% of total bookings). The next most popular airlines are Lufthansa (21%), Iberia (14%), and Delta (14%).

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
Iberia	PriceFrom $431	Free Cancellation	Rating 7.0 2,842 reviews	Search Iberia flights
TAP AIR PORTUGAL	PriceFrom $449	Free Cancellation	Rating 7.1 1,922 reviews	Search TAP AIR PORTUGAL flights
KLM	PriceFrom $507	Free Cancellation	Rating 7.8 1,374 reviews	Search KLM flights
United Airlines	PriceFrom $514	Free Cancellation	Rating 7.4 8,864 reviews	Search United Airlines flights
Lufthansa	PriceFrom $624	Free Cancellation	Rating 6.8 7,216 reviews	Search Lufthansa flights

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 7/22

Tue 7/29

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Spain

Cheap flights from Washington, D.C. to Bilbao from $281

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 9/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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

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?

What is the cheapest day to depart on your flight 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.

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

TAP AIR PORTUGAL, SWISS, and American Airlines are the most popular carriers operating from Washington, D.C. to Bilbao

What airlines fly 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

Best Price Found

Fastest flight time

Direct flights

Airports in Bilbao

How far is Washington, D.C. to Bilbao by plane?

When did momondo last update prices for flights from Washington, D.C. to Bilbao Airport?

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?

What documentation or ID do you need to fly to Bilbao Airport?

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

Traveling to a place near Bilbao?

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Bilbao?

Can I find flights from Washington, D.C. to Bilbao with flexible booking policies on momondo?

How can momondo help me find flights from Washington, D.C. to Bilbao?

I’m not ready to book a flight from Washington, D.C. to Bilbao right now. Can momondo alert me if prices 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.

Find better results for your trip to Spain

Airports servicing Basque Country