United States
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IAD - BIO

$319 Find Cheap Flights from Washington, D.C. to Bilbao - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$545
Typical prices: $660-$1,074
Multiple Airlines
Fri 2/2Fri 2/16
IAD - BIO • 1 stop
Cheapest one-way
$319
Typical prices: $466-$578
Lufthansa
Wed 3/7
IAD - BIO • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. Dulles Intl Airport and Bilbao. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
24 weeks
in advance
Our data shows that travelers who book at least 24 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 35% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Casablanca Mohamed V (CMN)
Cheapest • Avg $612 (round-trip)
Newark (EWR)
Shortest trip • 11h 38m (one-way)
Insights
Insights
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We hope you love your trip to Bilbao!

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

 

Cheap flights from Washington, D.C. to Bilbao with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Tue, Feb 2 - Tue, Feb 16
Multiple Airlines Logo
5:50 pm - 11:50 amIAD  Washington, D.C. Dulles Intl-BIO Bilbao
12h 00m1 stop Madrid Barajas
Multiple Airlines Logo
8:30 am - 4:20 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
13h 50m1 stop Madrid Barajas
$545Multiple Airlines
Mon, Feb 8 - Tue, Feb 16
Multiple Airlines Logo
5:50 pm - 11:45 amIAD  Washington, D.C. Dulles Intl-BIO Bilbao
11h 55m1 stop Madrid Barajas
Multiple Airlines Logo
9:15 am - 4:20 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
13h 05m1 stop Madrid Barajas
$557Multiple Airlines
Thu, Jan 28 - Thu, Feb 4
Multiple Airlines Logo
5:50 pm - 12:00 pmIAD  Washington, D.C. Dulles Intl-BIO Bilbao
12h 10m1 stop Madrid Barajas
Multiple Airlines Logo
9:15 am - 4:20 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
13h 05m1 stop Madrid Barajas
$583Multiple Airlines
Wed, Apr 7 - Wed, Apr 14
TAP AIR PORTUGAL Logo
10:05 pm - 11:30 amIAD  Washington, D.C. Dulles Intl-BIO Bilbao
31h 25m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
12:25 pm - 3:10 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
32h 45m1 stop Lisbon Humberto Delgado
$700TAP AIR PORTUGAL
Fri, Apr 9 - Fri, Apr 23
TAP AIR PORTUGAL Logo
10:35 pm - 5:55 pmIAD  Washington, D.C. Dulles Intl-BIO Bilbao
13h 20m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
12:15 pm - 8:35 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
14h 20m1 stop Lisbon Humberto Delgado
$707TAP AIR PORTUGAL
Thu, Jan 28 - Thu, Feb 4
United Airlines Logo
12:35 pm - 11:00 amIAD  Washington, D.C. Dulles Intl-BIO Bilbao
16h 25m2 stops Newark Munich Franz Josef Strauss
United Airlines Logo
6:45 am - 8:10 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
19h 25m2 stops Frankfurt am Main Toronto Pearson Intl
$771United Airlines
Thu, Jan 28 - Mon, Feb 1
United Airlines Logo
5:35 pm - 9:55 pmIAD  Washington, D.C. Dulles Intl-BIO Bilbao
22h 20m1 stop Munich Franz Josef Strauss
United Airlines Logo
11:45 am - 3:35 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
33h 50m1 stop Munich Franz Josef Strauss
$772United Airlines
Thu, Jan 28 - Thu, Feb 4
Lufthansa Logo
5:28 pm - 9:55 pmIAD  Washington, D.C. Dulles Intl-BIO Bilbao
22h 27m2 stops Boston Logan Intl Munich Franz Josef Strauss
Lufthansa Logo
7:30 am - 3:55 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
14h 25m2 stops Munich Franz Josef Strauss Frankfurt am Main
$774Lufthansa
Fri, Apr 9 - Fri, Apr 23
Lufthansa Logo
10:20 pm - 11:00 pmIAD  Washington, D.C. Dulles Intl-BIO Bilbao
18h 40m2 stops Munich Franz Josef Strauss Frankfurt am Main
Lufthansa Logo
7:15 am - 3:55 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
14h 40m2 stops Munich Franz Josef Strauss Frankfurt am Main
$803Lufthansa
Sun, Nov 29 - Mon, Dec 7
TAP AIR PORTUGAL Logo
10:30 pm - 6:35 pmIAD  Washington, D.C. Dulles Intl-BIO Bilbao
14h 05m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
7:20 pm - 2:40 pmBIO  Bilbao-IAD Washington, D.C. Dulles Intl
25h 20m1 stop Lisbon Humberto Delgado
$3,634TAP AIR PORTUGAL

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Bilbao flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Bilbao?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Bilbao. It’s 10% cheaper than the average day, while Friday is the most expensive, with prices 31% higher.

What’s the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Bilbao?

•January is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Bilbao at $533 round-trip.
•July ($1,003) and May ($963) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 88% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Washington, D.C. Dulles Intl Airport to Bilbao the cheapest?

Flights from Washington, D.C. Dulles Intl Airport to Bilbao are cheapest 24 weeks before departure. Booking in this window typically costs about 27% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Washington, D.C. Dulles Intl Airport to Bilbao flights

Low season

December

Cheapest flight

$319
Beat the crowds with an average 34% drop in travelers.
The most popular month to fly with an average 36% increase in travelers.
One-way flight from Washington, D.C. Dulles Intl 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

Your Washington, D.C. Dulles Intl Airport to Bilbao flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Washington, D.C. Dulles Intl Airport to Bilbao?

    Three cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Bilbao:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • How long is a flight from Washington, D.C. Dulles Intl Airport to Bilbao?

    A nonstop flight from Washington, D.C. Dulles Intl Airport to Bilbao takes 00m, covering 3,757 miles.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Bilbao?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Bilbao flight?

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Bilbao range from $660 to $1,074, with an average of $822 over the past 12 months. Anything below $660 counts as a good deal.

  • How expensive are last-minute Washington, D.C. Dulles Intl Airport to Bilbao flights?

    Last-minute fares on this route (booked within two weeks of departure) are 13% below the route average of $822. Booking late can sometimes save you money, but inventory is limited.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Bilbao looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to Bilbao are currently higher than usual. Average one-way flight prices are about $562, which is 10% above the typical average for this route.

  • What car rental options are available at Bilbao Airport (BIO)?

    Bilbao Airport (BIO) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:

    • Record go
    • Goldcar Rental SP
    • CLICK RENT
    • Rentbycar
    • Centauro

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to Bilbao?

    Flights from Washington, D.C. Dulles Intl Airport to Bilbao usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Bilbao (BIO).

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Bilbao pass through?

    One-stop flights from Washington, D.C. Dulles Intl Airport to Bilbao most commonly connect through:

    • Lisbon Humberto Delgado (LIS) - 41% of one-stop connections
    • Munich Franz Josef Strauss (MUC) - 19% of one-stop connections
    • Frankfurt am Main (FRA) - 13% of one-stop connections
    • Madrid Barajas (MAD) - 12% of one-stop connections

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Bilbao?

    Yes. Flexible dates can save you up to 32% on flights from Washington, D.C. Dulles Intl Airport to Bilbao. Wednesday is the cheapest departure day at $744 round-trip on average, while Friday is the most expensive at $1,081, a difference of $337.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Washington, D.C. Dulles Intl Airport to Bilbao?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time at 11h 38m, compared with 12h 48m via Madrid Barajas (MAD) and 12h 51m via Frankfurt am Main (FRA).

  • What is the time difference between Washington, D.C. Dulles Intl Airport and Bilbao?

    Bilbao is 6 hours ahead of Washington, D.C. Dulles Intl Airport (Central European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Washington, D.C. Dulles Intl Airport to Bilbao flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Friday. On this route, Wednesday flights average $744, about $337 less than Friday fares (31% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 24 weeks before you fly. On this route, that window historically saves about 27% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Bilbao trip for January. Fares historically average $533 round-trip in that month - typically $470 less than the most expensive month, which is July (based on the last 12 months).

More options for your flight from Washington, D.C. to Bilbao

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