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Dulles Intl

$336+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — IAD
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
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 January, booked 54 days in advance, depart on a Wednesday or Thursday and return on a Sunday

Cheap 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 December 8, 2025.

This lol.travel deal was found by Cheapflights users on 12/8. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:05 pmBCN - IAD
1 stop32h 55mTAP AIR PORTUGAL
Fri 1/910:30 pmIAD - BCN
1 stop19h 15mTAP AIR PORTUGAL
Deal found 12/8$545
This lol.travel deal was found by Cheapflights users on 12/8. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:45 amBCN - IAD
1 stop14h 30mTAP AIR PORTUGAL
Sun 12/2810:30 pmIAD - BCN
1 stop12h 45mTAP AIR PORTUGAL
Deal found 12/8$557
This lol.travel deal was found by Cheapflights users on 12/6. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:05 pmBCN - IAD
1 stop32h 55mTAP AIR PORTUGAL
Sun 12/2810:30 pmIAD - BCN
1 stop12h 45mTAP AIR PORTUGAL
Deal found 12/6$564
This FlightHub deal was found by Cheapflights users on 12/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:05 pmBCN - IAD
1 stop32h 55mTAP AIR PORTUGAL
Sun 12/2810:30 pmIAD - BCN
1 stop19h 15mTAP AIR PORTUGAL
Deal found 12/7$596
This Expedia deal was found by Cheapflights users on 12/7. 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.
Wed 12/241:50 pmBCN - IAD
1 stop12h 25mLufthansa
Thu 1/810:00 pmIAD - BCN
1 stop12h 20mLufthansa
Deal found 12/7$599
This SWISS deal was found by Cheapflights users on 12/7. 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.
Wed 12/242:55 pmBCN - IAD
1 stop31h 45mSWISS
Thu 1/810:15 pmIAD - BCN
2 stops14h 45mSWISS
Deal found 12/7$622
This eDestinos deal was found by Cheapflights users on 12/7. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:20 pmBCN - IAD
1 stop29h 25mRoyal Air Maroc
Fri 1/98:45 pmIAD - BCN
1 stop33h 00mRoyal Air Maroc
Deal found 12/7$644
This eDestinos deal was found by Cheapflights users on 12/6. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:35 amBCN - IAD
1 stop13h 55mAer Lingus
Fri 1/95:05 pmIAD - BCN
1 stop11h 45mAer Lingus
Deal found 12/6$647
This FlightHub deal was found by Cheapflights users on 12/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:45 amBCN - IAD
1 stop14h 30mTAP AIR PORTUGAL
Sun 1/410:30 pmIAD - BCN
1 stop29h 35mTAP AIR PORTUGAL
Deal found 12/8$650
This lol.travel deal was found by Cheapflights users on 12/6. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/139:10 pmBCN - IAD
1 stop29h 50mTAP AIR PORTUGAL
Sat 12/275:30 pmIAD - BCN
1 stop12h 15mTAP AIR PORTUGAL
Deal found 12/6$664

Find 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 December 8, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$460
(oojo)

One-way from

$336
(SmartFares)

Popular in

December

Cheapest in

February

Average price

$757

Good round-trip deal

$761 or less

Good one-way deal

$684 or less
Provider with most accurate pricing for Barcelona-El Prat-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Barcelona-El Prat-Washington, D.C. Dulles Intl flights.
Search Deals
From Barcelona-El Prat to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Barcelona-El Prat to Washington, D.C. Dulles Intl
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Barcelona-El Prat to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Barcelona-El Prat to Washington, D.C. Dulles Intl.
Search Deals

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 December 8, 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 3/30

6:35 pm-4:20 pm

1 stop27h 45m

Washington, D.C. Dulles Intl

Tue 4/7

8:45 pm-2:05 pm

1 stop11h 20m

$517

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Thu 4/2

11:50 am-7:25 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Tue 4/7

6:25 pm-8:20 am

Nonstop7h 55m

$529

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Fri 1/16

6:40 am-3:35 pm

1 stop14h 55m

Washington, D.C. Dulles Intl

Mon 1/19

9:45 pm-10:25 am

1 stop30h 40m

$531

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Tue 3/31

7:00 pm-4:50 pm

1 stop27h 50m

Washington, D.C. Dulles Intl

Wed 4/8

8:20 pm-6:10 pm

1 stop15h 50m

$539

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Thu 5/7

12:25 pm-4:50 pm

1 stop34h 25m

Washington, D.C. Dulles Intl

Sun 5/10

8:20 pm-6:10 pm

1 stop15h 50m

$539

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Thu 5/14

12:25 pm-4:50 pm

1 stop34h 25m

Washington, D.C. Dulles Intl

Sun 5/17

8:20 pm-6:10 pm

1 stop15h 50m

$547

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Thu 4/9

7:50 am-3:50 pm

1 stop14h 00m

Washington, D.C. Dulles Intl

Mon 4/13

6:00 pm-8:20 am

Nonstop8h 20m

$566

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Tue 2/10

6:00 am-12:24 am

2 stops24h 24m

Washington, D.C. Dulles Intl

Thu 2/19

7:51 pm-5:05 pm

2 stops15h 14m

$566

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Tue 3/31

10:15 am-7:55 pm

1 stop15h 40m

Washington, D.C. Dulles Intl

Sun 4/5

10:05 pm-8:00 am

1 stop27h 55m

$569

BarcelonaWashington, D.C.

BCN - IAD

BCNIAD

Barcelona-El Prat

Thu 3/26

9:55 am-9:15 pm

1 stop16h 20m

Washington, D.C. Dulles Intl

Sun 4/5

10:05 pm-8:00 am

1 stop27h 55m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Showing 1-10 of 21 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Barcelona-El Prat Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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 December 5, 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 52 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, April 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 $273). Flying from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $600). 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 December 8, 2025.

It’s optimal to fly from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport in the evening. By choosing this option you can save up to 48% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport?

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 December 8, 2025.
Read reviews from past customers who have flown United Airlines, TAP AIR PORTUGAL, and Lufthansa from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
United Airlines
7.4
Good
9,089 reviews
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
TAP AIR PORTUGAL
7.1
Good
2,085 reviews
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Lufthansa
6.8
Okay
7,618 reviews
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

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.

  • How long is the flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport?

    A quick flight from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport can take about 13h 35m. SWISS provides one of the quickest options available for as low as $529. The distance between Barcelona-El Prat Airport and Washington, D.C. Dulles Intl Airport is about 4046 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $406. Other airlines that can offer you cheap pricing are United Airlines, from $516, and Lufthansa, from $525. You may be able to fly from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport for 36% 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 $283. Users have also found prices from $326 and $384 on Icelandair and Aer Lingus, 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 (83%), United Airlines (83%) and Lufthansa (83%).

  • 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 $870, our data indicates the cheapest price to be $580. The most popular route (Barcelona-El Prat - Washington, D.C. Dulles Intl), is priced around $443.

  • 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, April 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 $273). Flying from Barcelona-El Prat Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $600). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

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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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$406Average$590FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$516Average$753FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$525Average$723FlexibilityNo cancel feeOn-time76%

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