Cheap flights from Washington Dulles to Bilbao

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Flight deals from Washington Dulles Airport to Bilbao Airport

Looking for a cheap last-minute deal or the best round-trip flight from Washington Dulles Airport to Bilbao Airport? If you want to travel next month, round-trip fares start from $589. Find the lowest prices on one-way and round-trip tickets right here.

Bilbao.$572 per passenger.Departing Wed, May 6, returning Wed, May 13.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Wed, May 6, arriving in Bilbao.Inbound indirect flight with Turkish Airlines, departing from Bilbao on Wed, May 13, arriving in Washington Dulles.Price includes taxes and charges.From $572, select.

Bilbao.$589 per passenger.Departing Tue, Apr 21, returning Tue, Apr 28.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Tue, Apr 21, arriving in Bilbao.Inbound indirect flight with Turkish Airlines, departing from Bilbao on Tue, Apr 28, arriving in Washington Dulles.Price includes taxes and charges.From $589, select.

Bilbao.$589 per passenger.Departing Tue, Sep 29, returning Tue, Oct 6.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Tue, Sep 29, arriving in Bilbao.Inbound indirect flight with Turkish Airlines, departing from Bilbao on Tue, Oct 6, arriving in Washington Dulles.Price includes taxes and charges.From $589, select.

Bilbao.$589 per passenger.Departing Tue, Sep 1, returning Tue, Sep 8.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Tue, Sep 1, arriving in Bilbao.Inbound indirect flight with Turkish Airlines, departing from Bilbao on Tue, Sep 8, arriving in Washington Dulles.Price includes taxes and charges.From $589, select.

Bilbao.$590 per passenger.Departing Tue, May 5, returning Tue, Jun 23.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Tue, May 5, arriving in Bilbao.Inbound indirect flight with Turkish Airlines, departing from Bilbao on Tue, Jun 23, arriving in Washington Dulles.Price includes taxes and charges.From $590, select.

Bilbao.$620 per passenger.Departing Wed, Aug 19, returning Thu, Aug 27.Round-trip flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Wed, Aug 19, arriving in Bilbao.Inbound indirect flight with TAP Air Portugal, departing from Bilbao on Thu, Aug 27, arriving in Washington Dulles.Price includes taxes and charges.From $620, select.

Bilbao.$638 per passenger.Departing Fri, Apr 24, returning Fri, May 1.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Fri, Apr 24, arriving in Bilbao.Inbound indirect flight with Turkish Airlines, departing from Bilbao on Fri, May 1, arriving in Washington Dulles.Price includes taxes and charges.From $638, select.

Bilbao.$814 per passenger.Departing Tue, Jul 28, returning Tue, Aug 4.Round-trip flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Tue, Jul 28, arriving in Bilbao.Inbound indirect flight with TAP Air Portugal, departing from Bilbao on Tue, Aug 4, arriving in Washington Dulles.Price includes taxes and charges.From $814, select.

Bilbao.$820 per passenger.Departing Sun, Jul 19, returning Sun, Jul 26.Round-trip flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departing from Washington Dulles on Sun, Jul 19, arriving in Bilbao.Inbound indirect flight with TAP Air Portugal, departing from Bilbao on Sun, Jul 26, arriving in Washington Dulles.Price includes taxes and charges.From $820, select.

Bilbao.$889 per passenger.Departing Tue, Jun 16, returning Wed, Jul 1.Round-trip flight with Porter Airlines and Air Europa.Outbound indirect flight with Porter Airlines, departing from Washington Dulles on Tue, Jun 16, arriving in Bilbao.Inbound indirect flight with Air Europa, departing from Bilbao on Wed, Jul 1, arriving in Washington Dulles.Price includes taxes and charges.From $889, select.

Bilbao.$892 per passenger.Departing Wed, Jun 3, returning Tue, Jun 9.Round-trip flight with SWISS.Outbound indirect flight with SWISS, departing from Washington Dulles on Wed, Jun 3, arriving in Bilbao.Inbound indirect flight with SWISS, departing from Bilbao on Tue, Jun 9, arriving in Washington Dulles.Price includes taxes and charges.From $892, select.

Bilbao.$917 per passenger.Departing Tue, Mar 31, returning Sat, Apr 11.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Washington Dulles on Tue, Mar 31, arriving in Bilbao.Inbound indirect flight with Delta, departing from Bilbao on Sat, Apr 11, arriving in Washington Dulles.Price includes taxes and charges.From $917, select.

Bilbao.$958 per passenger.Departing Fri, May 8, returning Fri, Jul 31.Round-trip flight with Lufthansa.Outbound indirect flight with Lufthansa, departing from Washington Dulles on Fri, May 8, arriving in Bilbao.Inbound indirect flight with Lufthansa, departing from Bilbao on Fri, Jul 31, arriving in Washington Dulles.Price includes taxes and charges.From $958, select.

Bilbao.$981 per passenger.Departing Sun, Jun 28, returning Thu, Aug 13.Round-trip flight with United.Outbound indirect flight with United, departing from Washington Dulles on Sun, Jun 28, arriving in Bilbao.Inbound indirect flight with United, departing from Bilbao on Thu, Aug 13, arriving in Washington Dulles.Price includes taxes and charges.From $981, select.

Find the cheapest month to fly from Washington Dulles to Bilbao

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Bilbao flights are currently cheapest in May.

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Washington Dulles to Bilbao: Alternative routes

Compare routes from Washington Dulles to Bilbao below. You may find an airport to fly into that's cheaper, faster, or easier than Bilbao.

Finding cheap flights from Washington Dulles to Bilbao: Frequently asked questions

How much are round-trip flights from Washington Dulles to Bilbao?

The best price we found for a round-trip flight from Washington Dulles to Bilbao is $572. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Washington Dulles to Bilbao?

Currently, there are no airlines that fly direct from Washington Dulles to Bilbao. But we found flights with one or more stops from $572.

How many flights are there a week from Washington Dulles to Bilbao?

There are no flights flying from Washington Dulles to Bilbao, as of March 2026.

When is the cheapest time to fly from Washington Dulles to Bilbao?

The cheapest month to fly from Washington Dulles to Bilbao is usually May.

Which upcoming date is cheapest to fly from Washington Dulles Airport to Bilbao Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Bilbao Airport on Wednesday, May 6, 2026.

Can I get a direct flight from Washington Dulles Airport to Bilbao Airport?

No airlines currently offer direct flights between Washington Dulles Airport and Bilbao Airport. Most routes have one or more stops.

How can I find the best flight deal to Bilbao?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Bilbao but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Bilbao?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Bilbao is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Washington Dulles Airport to Bilbao?

Currently, Turkish Airlines offers the cheapest flight tickets to Bilbao.

Traveling from Washington Dulles International Airport (IAD) to Bilbao Airport (BIO): what you need to know

The timezone in Bilbao is UTC+1, which is five hours ahead of Washington DC.
Your IAD to BIO flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're traveling internationally.
During popular months such as April, it's a good idea to get to the airport well in advance. Plan to arrive two hours before domestic departures and four hours ahead of an international flight when you fly during peak periods in general.
Think about adding a stopover when booking your ticket from Washington Dulles International Airport to Bilbao Airport. Simply deselect 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here's where you can stop between IAD and BIO:
- Charles de Gaulle Airport
- Barcelona-El Prat Airport
- Amsterdam Airport Schiphol

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Bilbao Airport (BIO)

The lowest price we've found for a one-way Washington Dulles International Airport to Bilbao Airport flight is $298. A round-trip fare right now is $572. Depending on the availability and when you book, these fares may change.
Don't leave everything to the last minute. You're more likely to get cheap tickets from IAD to BIO if you book early. Airlines often offer some fantastic early bird discounts.
Getting cheap flights from Washington Dulles International Airport to Bilbao Airport is easy if you're flexible with your travel dates. Use the 'Whole month' search function to see the lowest fares across every month and land a great deal.
Never miss a deal on cheap flights from IAD to BIO by setting up a Price Alert. We'll send you an email or notification through the app when a lower fare pops up.
Discover the perfect flight for you by using the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Washington Dulles International Airport to Bilbao Airport, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and number of stops.

Handy information about Washington Dulles International Airport (IAD)

You'll find IAD at 1 Saarinen Circle.
Of all flights departing from Washington Dulles International Airport, 74.39% arrive on time at their destination.
Washington Dulles International Airport is around 56 kilometers from central Washington DC. If you're driving, ride-sharing or catching a cab from the center, it'll take 50 minutes or so to get there, depending on the traffic.
You can expect a trip time of about 3 hours 25 minutes when using public transport.
Searching for a handy hotel close to IAD? If you're boarding an early flight from Washington Dulles International Airport to Bilbao Airport, these stays will put you moments from your check-in counter:

Arriving at Bilbao Airport (BIO)

If you're arriving on a late Washington Dulles International Airport to Bilbao Airport flight, nothing beats the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and relaxing soon after at one of these options near BIO:
Explore without limits with a Bilbao Airport rental car. Pick up a set of wheels from Record Go, Click and Rent or Goldcar and experience more of Bilbao and beyond.
To get the lowest price, book your vehicle from Bilbao Airport around four weeks ahead.

Getting from Bilbao Airport (BIO) to central Bilbao

Bilbao Airport to the center of Bilbao has a drive time of around 10 minutes. It's approximately 6 kilometers away.
Getting to the center by public transport takes around 30 minutes.

When to fly to Bilbao Airport (BIO)

The quietest month for a flight from Washington Dulles International Airport to Bilbao Airport is January, while July is the busiest. Choose the best time to visit Bilbao based on whether you prefer a faster pace or a more relaxed vibe.
The warmest month in Bilbao is August, with the temperature ranging between 16ºC (61ºF) and 25ºC (77ºF). Book your flights from Washington Dulles International Airport to Bilbao Airport in this month if this is the type of weather you like.
If you want to travel in cooler conditions, look for a cheap ticket from IAD to BIO in January. Average temperatures are between 5ºC (41ºF) and 13ºC (55ºF) then.

Explore more of Spain

Zaragoza is just one of the many places in Spain waiting to be discovered once you've taken in the sights of Bilbao. Around 241 kilometers away to the south-east, popular attractions include Puente de Piedra, Museo Pablo Gargallo and El Tubo.
Salamanca is another well-known destination in Spain and is around 338 kilometers south-west of Bilbao. No trip is complete without seeing Plaza Mayor, S.O.U. Servicio de Orientación al Universitario. Universidad de Salamanca and Pontifical University of Salamanca.