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Dulles Intl

$344+ Cheap flights from Barcelona-El Prat (BCN) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — IAD
May 26 — Jun 21
Mon 5/26
Mon 6/2
1 adult, Economy
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Cheapflights Tip: The best prices from Barcelona-El Prat to Washington, D.C. Dulles Intl are usually found in February or March, booked 57 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Barcelona-El Prat to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Barcelona-El Prat (BCN) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 21, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$509
(Lufthansa)

One-way from

$344
(Justfly.com)

Popular in

July

Cheapest in

February

Average price

$573

Good round-trip deal

$684 or less

Good one-way deal

$729 or less
Provider with most accurate pricing for Barcelona-El Prat-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Barcelona-El Prat-Washington, D.C. Dulles Intl flights.
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From Barcelona-El Prat to Washington, D.C. Dulles Intl
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One-way flight from Barcelona-El Prat to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 17% potential increase in price ($127 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Price to beat on a round-trip flight from Barcelona-El Prat to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Barcelona-El Prat to Washington, D.C. Dulles Intl.
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Find flight deals from Barcelona-El Prat to Dulles Intl

Cheapest flights from Barcelona-El Prat to Dulles Intl
Explore the most affordable flight options available from Barcelona-El Prat to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 21, 2025.

This Lufthansa deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/87:50 amBCN - IAD
2 stops14h 00mLufthansa
Sat 9/2710:15 pmIAD - BCN
1 stop15h 30mLufthansa
Deal found 5/19$509
This Expedia deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/59:40 amBCN - IAD
1 stop12h 35mMultiple Airlines
Mon 6/910:20 pmIAD - BCN
2 stops13h 50mMultiple Airlines
Deal found 5/19$512
This Iberia deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1410:40 pmBCN - IAD
2 stops22h 20mIberia
Mon 9/2910:40 pmIAD - BCN
1 stop13h 00mIberia
Deal found 5/19$522
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/129:20 amBCN - IAD
2 stops19h 40mDelta
Wed 10/112:30 pmIAD - BCN
2 stops14h 30mDelta
Deal found 5/19$524
This United Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/811:15 amBCN - IAD
Nonstop8h 50mUnited Airlines
Thu 10/26:35 pmIAD - BCN
Nonstop7h 45mUnited Airlines
Deal found 5/19$527
This TAP AIR PORTUGAL deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:00 amBCN - IAD
1 stop20h 05mTAP AIR PORTUGAL
Sat 9/275:00 pmIAD - BCN
1 stop15h 10mTAP AIR PORTUGAL
Deal found 5/21$528
This Brussels Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/19:20 pmBCN - IAD
1 stop23h 05mBrussels Airlines
Sun 9/75:25 pmIAD - BCN
2 stops21h 05mBrussels Airlines
Deal found 5/20$534
This Air Canada deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/412:10 pmBCN - IAD
2 stops15h 17mAir Canada
Mon 6/910:20 amIAD - BCN
2 stops15h 30mAir Canada
Deal found 5/20$540
This Virgin Atlantic deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/511:35 amBCN - IAD
1 stop17h 46mVirgin Atlantic
Sat 9/139:30 amIAD - BCN
2 stops17h 50mVirgin Atlantic
Deal found 5/21$566
This KLM deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/307:40 pmBCN - IAD
1 stop25h 55mKLM
Fri 7/115:25 pmIAD - BCN
1 stop15h 40mKLM
Deal found 5/20$611
This oojo deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/106:20 amBCN - IAD
1 stop14h 20mITA Airways
Tue 6/174:30 pmIAD - BCN
1 stop24h 45mITA Airways
Deal found 5/19$624
This SWISS deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/258:00 pmBCN - IAD
1 stop26h 15mSWISS
Tue 12/165:35 pmIAD - BCN
2 stops19h 25mSWISS
Deal found 5/20$647

Cheapflights Fare Finder

Customize your flight search to find flights from Barcelona-El Prat to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated May 21, 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

Barcelona-El Prat

Fly to

Dulles Intl

Route

Depart

Return

Price

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Mon 9/8

7:50 am-3:50 pm

2 stops14h 00m

Washington, D.C. Dulles Intl

Sat 9/27

10:15 pm-7:45 pm

1 stop15h 30m

$509

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Thu 6/5

9:40 am-4:15 pm

1 stop12h 35m

Washington, D.C. Dulles Intl

Mon 6/9

10:20 pm-6:10 pm

2 stops13h 50m

$512

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Sun 9/14

10:40 pm-3:00 pm

2 stops22h 20m

Washington, D.C. Dulles Intl

Tue 9/30

5:50 pm-10:45 pm

1 stop22h 55m

$522

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Fri 9/12

9:20 am-11:00 pm

2 stops19h 40m

Washington, D.C. Dulles Intl

Wed 10/1

12:30 pm-9:00 am

2 stops14h 30m

$524

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Mon 9/8

11:15 am-2:05 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Thu 10/2

6:35 pm-8:20 am

Nonstop7h 45m

$527

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Sat 9/13

6:00 am-8:05 pm

1 stop20h 05m

Washington, D.C. Dulles Intl

Sat 9/27

5:00 pm-2:10 pm

1 stop15h 10m

$528

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Mon 9/1

9:20 pm-2:25 pm

1 stop23h 05m

Washington, D.C. Dulles Intl

Sun 9/7

5:25 pm-8:30 pm

2 stops21h 05m

$534

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Wed 6/4

12:10 pm-9:27 pm

2 stops15h 17m

Washington, D.C. Dulles Intl

Mon 6/9

10:20 am-7:50 am

2 stops15h 30m

$540

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Fri 9/5

11:35 am-11:21 pm

1 stop17h 46m

Washington, D.C. Dulles Intl

Sat 9/13

9:30 am-9:20 am

2 stops17h 50m

$566

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Mon 6/30

7:40 pm-3:35 pm

1 stop25h 55m

Washington, D.C. Dulles Intl

Fri 7/11

5:25 pm-3:05 pm

1 stop15h 40m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Showing 1-10 of 27 results
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Compare providers for flights from Barcelona-El Prat to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Barcelona-El Prat to Dulles Intl in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Barcelona-El Prat Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Barcelona-El Prat Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Barcelona-El Prat Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Barcelona-El Prat Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Barcelona-El Prat Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Barcelona-El Prat to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Barcelona-El Prat with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Barcelona-El Prat to Dulles Intl. Price data was last updated on May 16, 2025.

The price you pay for your flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 57 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BCN to IAD?

Find hourly flight availability from Barcelona-El Prat to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 21, 2025.

It’s optimal to fly from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport in the afternoon. By choosing this option you can save up to 47% on the cost of your flight, compared to a flight in the morning.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated May 21, 2025.
Get a feel of what it's like to fly with Delta, KLM and Austrian Airlines from Barcelona to Washington, D.C. by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,951 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,346 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
792 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,745 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Barcelona-El Prat to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport round-trip?

    Cheapflights users have booked flights from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport round-trip from $509. Other airlines that can offer you cheap pricing are Iberia, from $522, and Delta, from $524. You may be able to fly from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport for 14% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport one-way?

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as $344. Users have also found prices from $372 and $373 on Iberia and British Airways, respectively.

  • What are the most reliable airlines from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport?

    The top 3 most reliable airlines when flying from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport are Air Canada (88%), United Airlines (88%) and Lufthansa (88%).

  • What are the cheapest flights from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport?

    Looking for the cheapest flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport? While on average our users pay $1,583, our data indicates the cheapest price to be $583. The most popular route (Barcelona-El Prat - Washington, D.C. Dulles Intl), is priced around $435.

  • Can I find deals for flights from Barcelona-El Prat to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Barcelona-El Prat to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Barcelona-El Prat to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Barcelona-El Prat to Dulles Intl.

  • Can I find deals for business class flights from Barcelona-El Prat to Dulles Intl?

    Yes. Cheapflights offers flight deals from Barcelona-El Prat to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Tysons
Silver Spring
Fairfax
Fredericksburg
Linthicum Heights
Gaithersburg
Springfield
Falls Church
Rockville
Laurel
Easton
Towson
Herndon
Sterling
Bowie
National Harbor
Reston

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Alternative routes for Barcelona-El Prat to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Barcelona-El Prat to Baltimore flights
Barcelona-El Prat to Reagan-National flights
Costa Brava to Dulles Intl flights

Top 3 airlines flying from Barcelona-El Prat to Dulles Intl

Discover the top 3 airlines that operate flights from Barcelona-El Prat to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$366Average$541FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$406Average$603FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$432Average$762FlexibilityNo cancel feeOn-time69%

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