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Cheap flights from Washington, D.C. Dulles Intl Airport to Barcelona from $278

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. Dulles Intl Airport to Barcelona departing on 4/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:55 pm - 11:05 pmIAD-BCN
18h 10m1 stop
Multiple Airlines Logo
8:30 pm - 2:40 pmBCN-IAD
24h 10m1 stop
$472Multiple Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 17
Multiple Airlines Logo
9:45 am - 9:35 amIAD-BCN
17h 50m1 stop
Multiple Airlines Logo
2:55 pm - 4:40 pmBCN-IAD
31h 45m1 stop
$473Multiple Airlines
Find Deal
Mon, Dec 8 - Wed, Dec 10
United Airlines Logo
8:30 am - 9:35 amIAD-BCN
19h 05m2 stops
United Airlines Logo
1:35 pm - 11:23 amBCN-IAD
27h 48m1 stop
$474United Airlines
Find Deal
Tue, Nov 4 - Wed, Nov 12
United Airlines Logo
10:55 pm - 5:35 pmIAD-BCN
12h 40m1 stop
United Airlines Logo
10:30 am - 2:00 pmBCN-IAD
9h 30mnonstop
$475United Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 12
Lufthansa Logo
10:55 pm - 11:05 pmIAD-BCN
18h 10m1 stop
Lufthansa Logo
5:50 am - 3:50 pmBCN-IAD
16h 00m1 stop
$477Lufthansa
Find Deal
Wed, Nov 5 - Tue, Nov 11
Delta Logo
1:00 pm - 3:00 pmIAD-BCN
21h 00m2 stops
Delta Logo
11:10 am - 5:05 pmBCN-IAD
34h 55m1 stop
$483Delta
Find Deal
Sun, Mar 8 - Tue, Mar 17
TAP AIR PORTUGAL Logo
5:30 pm - 1:45 pmIAD-BCN
14h 15m1 stop
TAP AIR PORTUGAL Logo
9:10 pm - 9:00 pmBCN-IAD
29h 50m1 stop
$493TAP AIR PORTUGAL
Find Deal
Mon, Dec 1 - Sat, Dec 6
Lufthansa Logo
10:55 pm - 5:35 pmIAD-BCN
12h 40m1 stop
Lufthansa Logo
11:55 am - 8:05 pmBCN-IAD
14h 10m1 stop
$500Lufthansa
Find Deal
Mon, Nov 3 - Thu, Nov 13
TAP AIR PORTUGAL Logo
5:30 pm - 1:45 pmIAD-BCN
14h 15m1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 9:00 pmBCN-IAD
32h 55m1 stop
$502TAP AIR PORTUGAL
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Sat, Nov 15 - Sat, Nov 22
Delta Logo
6:50 pm - 11:10 amIAD-BCN
10h 20m1 stop
Delta Logo
11:10 am - 11:03 pmBCN-IAD
17h 53m2 stops
$509Delta
Find Deal
Mon, Nov 3 - Tue, Nov 11

Lufthansa flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

Our best Lufthansa deals on Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport flight tickets
Lufthansa
Nov 5
IAD10:55 pmWashington, D.C. Dulles Intl
18h 10m
1 stop
BCN11:05 pmBarcelona-El Prat
Nov 11
BCN5:50 amBarcelona-El Prat
16h 00m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
$477
Find similar
Lufthansa
Nov 3
IAD10:55 pmWashington, D.C. Dulles Intl
12h 40m
1 stop
BCN5:35 pmBarcelona-El Prat
Nov 13
BCN11:55 amBarcelona-El Prat
14h 10m
1 stop
IAD8:05 pmWashington, D.C. Dulles Intl
$500
Find similar
Lufthansa
Nov 16
IAD6:05 pmWashington, D.C. Dulles Intl
8h 15m
BCN8:20 amBarcelona-El Prat
Nov 25
BCN10:30 amBarcelona-El Prat
9h 30m
IAD2:00 pmWashington, D.C. Dulles Intl
$503
Find similar

United Airlines flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport flight tickets
United Airlines
Nov 4
IAD8:30 amWashington, D.C. Dulles Intl
19h 05m
2 stops
BCN9:35 amBarcelona-El Prat
Nov 12
BCN1:35 pmBarcelona-El Prat
27h 48m
1 stop
IAD11:23 amWashington, D.C. Dulles Intl
$474
Find similar
United Airlines
Nov 5
IAD10:55 pmWashington, D.C. Dulles Intl
12h 40m
1 stop
BCN5:35 pmBarcelona-El Prat
Nov 12
BCN10:30 amBarcelona-El Prat
9h 30m
IAD2:00 pmWashington, D.C. Dulles Intl
$475
Find similar
United Airlines
Dec 7
IAD1:20 pmWashington, D.C. Dulles Intl
15h 25m
1 stop
BCN10:45 amBarcelona-El Prat
Dec 11
BCN1:35 pmBarcelona-El Prat
28h 09m
2 stops
IAD11:44 amWashington, D.C. Dulles Intl
$476
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport 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 October 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Wed 11/12

10:55 pm-11:05 pm

1 stop18h 10m

Barcelona-El Prat

Mon 11/17

8:30 pm-2:40 pm

1 stop24h 10m

$472

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 12/8

9:45 am-9:35 am

1 stop17h 50m

Barcelona-El Prat

Wed 12/10

2:55 pm-4:40 pm

1 stop31h 45m

$473

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Tue 11/4

8:30 am-9:35 am

2 stops19h 05m

Barcelona-El Prat

Wed 11/12

1:35 pm-11:23 am

1 stop27h 48m

$474

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Wed 11/5

10:55 pm-5:35 pm

1 stop12h 40m

Barcelona-El Prat

Wed 11/12

10:30 am-2:00 pm

Nonstop9h 30m

$475

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Wed 11/5

10:55 pm-11:05 pm

1 stop18h 10m

Barcelona-El Prat

Tue 11/11

5:50 am-3:50 pm

1 stop16h 00m

$477

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 3/8

1:00 pm-3:00 pm

2 stops21h 00m

Barcelona-El Prat

Tue 3/17

11:10 am-5:05 pm

1 stop34h 55m

$483

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 12/1

5:30 pm-1:45 pm

1 stop14h 15m

Barcelona-El Prat

Sat 12/6

9:10 pm-9:00 pm

1 stop29h 50m

$493

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 11/3

10:55 pm-5:35 pm

1 stop12h 40m

Barcelona-El Prat

Thu 11/13

11:55 am-8:05 pm

1 stop14h 10m

$500

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sat 11/15

5:30 pm-1:45 pm

1 stop14h 15m

Barcelona-El Prat

Sat 11/22

6:05 pm-9:00 pm

1 stop32h 55m

$502

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 11/3

6:50 pm-11:10 am

1 stop10h 20m

Barcelona-El Prat

Tue 11/11

11:10 am-11:03 pm

2 stops17h 53m

$509

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

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. Dulles Intl Airport and Barcelona-El Prat Airport?

What is the cheapest month to fly to Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport is in January. Flight prices, which tend to average around $615, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport during October instead. Flights to Barcelona-El Prat Airport in October, while not as cheap as those in January, still average around $669.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Sunday when prices can be found for as low as $882. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,193. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $759 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,108 on average. Flights to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Washington, D.C. Dulles Intl to Barcelona-El Prat flight route?

Fly from Washington, D.C. Dulles Intl to Barcelona-El Prat for the best Washington, D.C. Dulles Intl - Barcelona-El Prat flight prices

How far in advance should I book a flight to Barcelona-El Prat Airport?

You are more likely to see cheaper flights to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $796 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport for as low as $722 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to Barcelona-El Prat flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl to Barcelona-El Prat flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport flight prices changed over time?

As of October 2025, prices for Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport flights are approximately 19% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport (IAD to BCN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

Best Price Found

$479

Fastest flight time

7h 45m

Direct flights

Every day
The best one-way flight to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport in the past 72 hours is $479. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport found on momondo in the last 72 hours is $622.
The fastest flight from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport takes 7h 45m
Direct flights go from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport every day.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Barcelona-El Prat by plane?

    A flight from Washington, D.C. Dulles Intl to Barcelona-El Prat will travel around 4046.0 mi. A reasonable flight in good conditions will take 8h 10m.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat 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. Dulles Intl Airport to Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The travel and health documents you'll need for your trip to Barcelona-El Prat 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 Barcelona-El Prat Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom $375Free CancellationRating
7.1
2,016 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $389Free CancellationRating
7.0
556 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $409Free CancellationRating
7.4
1,533 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $468Free CancellationRating
7.9
7,978 reviews
Search Delta flights
United AirlinesPriceFrom $498Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
British AirwaysPriceFrom $498Free CancellationRating
6.7
7,457 reviews
Search British Airways flights
Air FrancePriceFrom $500Free CancellationRating
7.4
1,476 reviews
Search Air France flights
LufthansaPriceFrom $522Free CancellationRating
6.8
7,497 reviews
Search Lufthansa flights
American AirlinesPriceFrom $524Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
SWISSPriceFrom $528Free CancellationRating
7.5
1,772 reviews
Search SWISS flights

  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

    United Airlines flies from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport around 7 times per week, with 8,982 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport in the last 72 hours was $498 (round-trip), much lower than the average airfare cost of $928 for United Airlines flights on this route.

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
Tossa de Mar
Castelldefels
El Prat de Llobregat
L'Hospitalet de Llobregat
Tarragona
Santa Susanna
Cambrils
Cadaques
Empuriabrava
Badalona
Pineda de Mar
Calella
Roses
Pals
Malgrat de Mar
Palafrugell
Tortosa

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Barcelona for you.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Barcelona flights to just show those with flexible booking policies.

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

Once all potential Washington, D.C. to Barcelona flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Barcelona from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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