WAS - BIO

$292 Find Cheap Flights from Washington, D.C. to Bilbao - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Bilbao departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bilbao

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bilbao, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bilbao, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$689
Typical prices: $873-$575
TAP AIR PORTUGAL
Sat 8/15Wed 8/26
IAD - BIO • 1 stop
Cheapest one-way
$292
Multiple Airlines
Tue 10/6
IAD - BIO • 2 stops
Top airlines
Cheapest • from $689 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Bilbao. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $559 (round-trip)
Shortest trip • 10h 44m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 34% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bilbao!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Bilbao (WAS-BIO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Bilbao that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Bilbao

Sat, Aug 15 - Wed, Aug 26
TAP AIR PORTUGAL Logo
5:05 pm - 6:05 pm
IAD
-
BIO
19h 00m
1 stop
TAP AIR PORTUGAL Logo
12:25 pm - 3:10 pm
BIO
-
IAD
32h 45m
1 stop
$689TAP AIR PORTUGAL
Sun, Nov 1 - Sat, Nov 21
Royal Air Maroc Logo
9:05 pm - 6:45 pm
IAD
-
BIO
15h 40m
1 stop
Royal Air Maroc Logo
7:45 pm - 7:05 pm
BIO
-
IAD
29h 20m
1 stop
$695Royal Air Maroc
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
5:15 pm - 5:30 pm
IAD
-
BIO
18h 15m
1 stop
Multiple Airlines Logo
9:15 am - 3:30 pm
BIO
-
IAD
12h 15m
1 stop
$719Multiple Airlines
Sun, Sep 27 - Fri, Oct 2
Iberia Logo
5:00 pm - 12:45 pm
IAD
-
BIO
13h 45m
1 stop
Iberia Logo
9:15 am - 3:30 pm
BIO
-
IAD
12h 15m
1 stop
$736Iberia
Wed, Nov 4 - Wed, Nov 18
Multiple Airlines Logo
2:00 pm - 8:30 am
DCA
-
BIO
12h 30m
2 stops
Multiple Airlines Logo
9:15 am - 10:29 pm
BIO
-
DCA
19h 14m
2 stops
$743Multiple Airlines
Sat, Nov 7 - Sat, Nov 14
Iberia Logo
5:45 pm - 8:30 am
DCA
-
BIO
32h 45m
2 stops
Iberia Logo
9:15 am - 7:10 pm
BIO
-
DCA
15h 55m
2 stops
$778Iberia
Tue, Nov 3 - Fri, Nov 20
Delta Logo
1:30 pm - 11:30 am
DCA
-
BIO
16h 00m
2 stops
Delta Logo
6:50 am - 6:05 pm
BIO
-
DCA
17h 15m
2 stops
$801Delta
Wed, Oct 7 - Wed, Oct 21
Delta Logo
12:15 pm - 9:50 am
BWI
-
BIO
15h 35m
2 stops
Delta Logo
10:30 am - 10:10 pm
BIO
-
BWI
17h 40m
2 stops
$808Delta
Tue, Sep 15 - Tue, Sep 22
United Airlines Logo
1:01 pm - 10:45 am
DCA
-
BIO
15h 44m
1 stop
United Airlines Logo
2:05 pm - 10:20 am
BIO
-
DCA
26h 15m
2 stops
$818United Airlines
Wed, Sep 9 - Fri, Sep 18
United Airlines Logo
10:27 am - 5:55 pm
DCA
-
BIO
25h 28m
2 stops
United Airlines Logo
12:30 pm - 7:39 pm
BIO
-
DCA
13h 09m
1 stop
$829United Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Bilbao flights

Get data-powered insights and trends into flights from Washington, D.C. to Bilbao to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. to Bilbao?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Bilbao departing in August.

What is the cheapest month to fly from Washington, D.C. to Bilbao?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Bilbao, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Bilbao is January, where tickets cost $334 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $671 and $610 respectively.

Good to know

Low seasonJanuary
Cheapest flight$292
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Washington Dulles Airport to Bilbao

When to book flights from Washington, D.C. to Bilbao

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Bilbao based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Bilbao

  • What is the cheapest flight from Washington, D.C. to Bilbao?

    In the last 5 days, the lowest price for a flight from Washington, D.C. to Bilbao was $292 for a one-way ticket and $689 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Bilbao?

    Yes, you’ll need a passport to travel to Bilbao from Washington, D.C..

  • Which airports will I be using when flying from Washington, D.C. to Bilbao?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in Bilbao. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Bilbao.

  • Which aircraft models fly most regularly from Washington, D.C. to Bilbao?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Bilbao?

    oneworld, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Bilbao, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Bilbao, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Bilbao are Delta and United Airlines. With an average price for the route of $831 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,037 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Bilbao?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Bilbao.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Bilbao?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Bilbao?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bilbao with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Bilbao?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bilbao from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Washington, D.C. to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Bilbao. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Bilbao? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8405 reviews
7.2Food
8.1Boarding
8.5Crew
7.8Comfort
7.8Entertainment
Airline reviews

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

4.0 OkayMarilyn, Jun 2026
DEN - ATL
Read more Delta reviews

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

The crew was excellent. What I did not enjoy was the food. I have taken many international flights and this was on the low end. Otherwise the trip was fine.

Seats were the most uncomfortable seats i ever experienced on a flight to Europe from Boston. It was a waist of money in buying premium seats for top dollars. I want my money back for what i paid extra for my seats. Awful conditions!

Boarding felt a little chaotic as everyone was waiting around the gate. Food was great, service was good.

Flight attendants in business class were rather indifferent While in second leg operated by Portugalia TAP subsidiary were outstanfy

Didn't make announcements during boarding, flight attendant seemed annoyed when I asked for water. Too many hours between flights. Confusing check in at the Lisbon airport.

The chicken was so dry it was impossible to eat. No substitute was offered. The port to charge my phone was broken and all I got was a shrug from the crew. The entertainment system was glitchy and subtitles didn’t load. Crew seemed fully uninterested and unfriendly.

The flight crew were absolute rock stars. When they came to the gate they looked like royalty, so chic. They also were extremely kind. Food was good and I loved the lack of plastic waste. The flight was lovely and smooth.

We were unable to check in due to technical problems on TAP’s end. The flight was delayed forty minutes with no reason given. We received timely notice of the flight delay. We were also notified of a gate change. The new gate was at a different terminal. When we got to the new terminal, we learned that we had to go back to the old terminal first to check in. This information should have been included along with the gate change notification. Also unexplained, the steward skipped us when offering breakfast.

Horrible experience at tbe check in ladie she was very racist ,she doesn't speak portuguese too and forced me to check in my carrion bag and I saw everyone with carrion bag inside anda lot of space ,she was rude unprofessional

The crew was great. There was a big guy sitting next to me who was hanging over my side of the armrest the entire time. Maybe some information about "Be considerate of your neighbors, this is tight space, be kind". The breakfast sandwich was not appealing at all.

This is a very basic flight with no-frills. I just wish the seats were a little bit more comfortable.

Catastrophic experience the gate selected customers were picked up to.pay 70 eur for overweight 1-2 kg. While some others were let to board without chcking their carry on bags. Unecessaey drama by Lufthansa that brings nothing just hating them by customers.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

good entertainment package but rather small seats for business class

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Our flight was delayed for over an hour due to weather, and it had already been a long travel day. However, the crew was calm and compassionate, listening to every complaint with genuine concern. They got us home safely without incident, in spite of all of the obstacles. I’m grateful.

Bad! Disaster!! The LH419 was cancelled after 4 hrs on board with no AC and no toilets

We had almost a 6 hr delay, primarily due to weather, the e problem was that they communicated this delay and its length very poorly. The boarding was chaotic - even though they had hours to figure it out! The plane was an old 747 whose touch screens barely worked and there was a faulty USB port under my seat rest (something that wasn't labeled as being there) They organized my delayed luggage well. And I could get updates on the Lufthansa website. My shirt connecting flight charged for everything except water. Coffee was over 3€

Everything you need to know for your flight from Washington, D.C. to Bilbao

Information on your arrival and departure airports