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Cheap flights from Barcelona-El Prat Airport to Washington, D.C. from $318

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Barcelona-El Prat Airport to Washington, D.C. departing on 3/26. 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 Barcelona-El Prat Airport to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
10:55 am - 3:15 pm
BCN
-
IAD
34h 20m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 5:15 pm
IAD
-
BCN
12h 45m1 stop
$470TAP AIR PORTUGAL
Fri, Feb 20 - Sun, Feb 22
TAP AIR PORTUGAL Logo
9:10 pm - 9:00 pm
BCN
-
IAD
29h 50m1 stop
TAP AIR PORTUGAL Logo
5:30 pm - 11:45 pm
IAD
-
BCN
24h 15m1 stop
$474TAP AIR PORTUGAL
Thu, Jan 29 - Thu, Feb 5
TAP AIR PORTUGAL Logo
2:35 pm - 9:00 pm
BCN
-
IAD
12h 25m1 stop
TAP AIR PORTUGAL Logo
5:30 pm - 1:45 pm
IAD
-
BCN
14h 15m1 stop
$483TAP AIR PORTUGAL
Fri, Jan 16 - Thu, Feb 5
TAP AIR PORTUGAL Logo
10:40 pm - 3:05 pm
BCN
-
IAD
22h 25m1 stop
TAP AIR PORTUGAL Logo
5:05 pm - 9:50 pm
IAD
-
BCN
22h 45m1 stop
$488TAP AIR PORTUGAL
Mon, Mar 30 - Tue, Apr 7
TAP AIR PORTUGAL Logo
9:10 pm - 9:00 pm
BCN
-
IAD
29h 50m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 5:15 pm
IAD
-
BCN
12h 45m1 stop
$501TAP AIR PORTUGAL
Tue, Jan 13 - Wed, Jan 28
TAP AIR PORTUGAL Logo
9:10 pm - 9:00 pm
BCN
-
IAD
29h 50m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 5:15 pm
IAD
-
BCN
12h 45m1 stop
$510TAP AIR PORTUGAL
Tue, Jan 20 - Sun, Feb 1
TAP AIR PORTUGAL Logo
6:45 am - 3:15 pm
BCN
-
IAD
14h 30m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 5:15 pm
IAD
-
BCN
12h 45m1 stop
$513TAP AIR PORTUGAL
Thu, Jan 22 - Wed, Jan 28
Scandinavian Airlines Logo
7:10 pm - 3:20 pm
BCN
-
IAD
26h 10m1 stop
Scandinavian Airlines Logo
8:30 pm - 6:20 pm
IAD
-
BCN
15h 50m1 stop
$514Scandinavian Airlines
Sun, Jan 18 - Wed, Jan 21
Scandinavian Airlines Logo
7:10 pm - 6:15 pm
BCN
-
IAD
28h 05m1 stop
Scandinavian Airlines Logo
8:20 pm - 10:35 am
IAD
-
BCN
32h 15m2 stops
$518Scandinavian Airlines
Wed, Mar 25 - Wed, Apr 8
TAP AIR PORTUGAL Logo
2:35 pm - 2:35 pm
BCN
-
IAD
30h 00m1 stop
TAP AIR PORTUGAL Logo
5:30 pm - 11:45 am
IAD
-
BCN
12h 15m1 stop
$520TAP AIR PORTUGAL
Mon, Jan 19 - Sat, Jan 31

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

Our best Lufthansa deals on Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport flight tickets
Lufthansa
Feb 10
BCN6:50 amBarcelona-El Prat
15h 00m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
Feb 19
IAD6:05 pmWashington, D.C. Dulles Intl
8h 15m
BCN8:20 amBarcelona-El Prat
$567
Find similar
Lufthansa
Dec 24
BCN1:50 pmBarcelona-El Prat
12h 25m
1 stop
IAD8:15 pmWashington, D.C. Dulles Intl
Dec 28
IAD6:05 pmWashington, D.C. Dulles Intl
8h 15m
BCN8:20 amBarcelona-El Prat
$860
Find similar
Lufthansa
Dec 26
BCN1:50 pmBarcelona-El Prat
12h 25m
1 stop
IAD8:15 pmWashington, D.C. Dulles Intl
Jan 3
IAD6:05 pmWashington, D.C. Dulles Intl
8h 15m
BCN8:20 amBarcelona-El Prat
$866
Find similar

TAP AIR PORTUGAL flights from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport

Our best TAP AIR PORTUGAL deals on Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport flight tickets
TAP AIR PORTUGAL
Jan 16
BCN2:35 pmBarcelona-El Prat
12h 25m
1 stop
IAD9:00 pmWashington, D.C. Dulles Intl
Feb 5
IAD5:30 pmWashington, D.C. Dulles Intl
14h 15m
1 stop
BCN1:45 pmBarcelona-El Prat
$483
Find similar
TAP AIR PORTUGAL
Mar 30
BCN10:40 pmBarcelona-El Prat
22h 25m
1 stop
IAD3:05 pmWashington, D.C. Dulles Intl
Apr 7
IAD5:05 pmWashington, D.C. Dulles Intl
22h 45m
1 stop
BCN9:50 pmBarcelona-El Prat
$488
Find similar
TAP AIR PORTUGAL
Jan 13
BCN9:10 pmBarcelona-El Prat
29h 50m
1 stop
IAD9:00 pmWashington, D.C. Dulles Intl
Jan 28
IAD10:30 pmWashington, D.C. Dulles Intl
12h 45m
1 stop
BCN5:15 pmBarcelona-El Prat
$501
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl 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 December 18, 2025.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Fri 2/20

10:55 am-3:15 pm

1 stop34h 20m

Washington, D.C. Dulles Intl

Sun 2/22

10:30 pm-5:15 pm

1 stop12h 45m

$470

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Thu 1/29

9:10 pm-9:00 pm

1 stop29h 50m

Washington, D.C. Dulles Intl

Thu 2/5

5:30 pm-11:45 pm

1 stop24h 15m

$474

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Fri 1/16

2:35 pm-9:00 pm

1 stop12h 25m

Washington, D.C. Dulles Intl

Thu 2/5

5:30 pm-1:45 pm

1 stop14h 15m

$483

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Mon 3/30

10:40 pm-3:05 pm

1 stop22h 25m

Washington, D.C. Dulles Intl

Tue 4/7

5:05 pm-9:50 pm

1 stop22h 45m

$488

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Tue 1/13

9:10 pm-9:00 pm

1 stop29h 50m

Washington, D.C. Dulles Intl

Wed 1/28

10:30 pm-5:15 pm

1 stop12h 45m

$501

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Tue 1/20

9:10 pm-9:00 pm

1 stop29h 50m

Washington, D.C. Dulles Intl

Sun 2/1

10:30 pm-5:15 pm

1 stop12h 45m

$510

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Thu 1/22

6:45 am-3:15 pm

1 stop14h 30m

Washington, D.C. Dulles Intl

Wed 1/28

10:30 pm-5:15 pm

1 stop12h 45m

$513

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Sun 1/18

7:10 pm-3:20 pm

1 stop26h 10m

Washington, D.C. Dulles Intl

Wed 1/21

8:30 pm-6:20 pm

1 stop15h 50m

$514

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Wed 3/25

7:10 pm-6:15 pm

1 stop28h 05m

Washington, D.C. Dulles Intl

Wed 4/8

8:20 pm-10:35 am

2 stops32h 15m

$518

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Mon 1/19

2:35 pm-2:35 pm

1 stop30h 00m

Washington, D.C. Dulles Intl

Sat 1/31

5:30 pm-11:45 am

1 stop12h 15m

$520

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

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

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, February is the cheapest month to fly from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $436. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $517.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Wednesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $754. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport for around $1,066.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Barcelona-El Prat Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $446 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $861 on average. Flights to Washington, D.C. Dulles Intl Airport from Barcelona-El Prat Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Barcelona-El Prat Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $643 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Barcelona-El Prat Airport for as low as $457 on momondo.

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

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

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

As of December 2025, prices for Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport flights are approximately 40% more expensive when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$693

Fastest flight time

9h 00m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Barcelona-El Prat Airport in the past 72 hours is $693. The best round-trip flight deal from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $761.
The fastest flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport takes 9h 00m
Direct flights go from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

    Washington, D.C. Dulles Intl is 4046.0 mi away from Barcelona-El Prat. In terms of flight time, this usually takes a little over 9h 00m.

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

    Prices for flights from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport refresh daily.

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

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

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl 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 Washington, D.C. Dulles Intl 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 Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport?

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

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

Compare and see reviews for airlines that fly from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom $406Free CancellationRating
7.2
2,091 reviews
Search TAP AIR PORTUGAL flights
United AirlinesPriceFrom $516Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
LufthansaPriceFrom $525Free CancellationRating
6.8
7,635 reviews
Search Lufthansa flights

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

    Across 5 United Airlines flights from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport this week, the average price was $753, with the best United Airlines deals starting from $516 round-trip. 9,092 users have rated United Airlines on momondo, with an average score of 7.4/10.

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

    Lufthansa is also a popular choice for this route. Lufthansa flight deals for Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport start from as low as $525 round-trip, depending on your selected dates, with average Lufthansa deals seen on momondo around $723. Lufthansa operates 5 flights to Washington, D.C. Dulles Intl Airport from Barcelona-El Prat Airport in an average week. Users have rated it 6.8/10 across 7,635 reviews.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Harpers Ferry
Rockville
Gaithersburg
Reston
Manassas
Sterling
Fairfax

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Barcelona to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Washington, D.C. from Barcelona which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Barcelona and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Barcelona and alert you when they change.

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