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$261+ Cheap flights from Dulles Intl (IAD) to Barcelona

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BCN
Jul 30 — Aug 61
Thu 7/30
Thu 8/6
1 adult, Economy
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Find cheap flights from Dulles Intl to Barcelona with Cheapflights

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Barcelona are usually found in February or January, booked 47 days in advance, depart on a Monday or Sunday and return on a Tuesday

Cheap flight deals from Dulles Intl to Barcelona

Cheapest flights from Dulles Intl to Barcelona
Explore the most affordable flight options available from Dulles Intl to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:30 pm
IAD
-
BCN
2 stops22h 10m
Multiple Airlines
Tue 9/153:00 pm
BCN
-
IAD
1 stop11h 35m
Multiple Airlines
Deal found 6/30$761
This Mytrip deal was found by Cheapflights users on 6/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:55 am
IAD
-
BCN
3 stops30h 55m
Multiple Airlines
Wed 8/125:50 am
BCN
-
IAD
2 stops15h 34m
Multiple Airlines
Deal found 6/30$762
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:30 pm
IAD
-
BCN
2 stops20h 05m
Multiple Airlines
Thu 7/236:00 am
BCN
-
IAD
1 stop15h 10m
Multiple Airlines
Deal found 6/29$763
This KAYAK deal was found by Cheapflights users on 6/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/279:05 pm
IAD
-
BCN
1 stop32h 40m
Royal Air Maroc
Tue 12/17:10 pm
BCN
-
IAD
1 stop29h 55m
Royal Air Maroc
Deal found 6/30$764
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:40 pm
IAD
-
BCN
2 stops14h 00m
Multiple Airlines
Fri 12/412:45 pm
BCN
-
IAD
1 stop12h 20m
Multiple Airlines
Deal found 6/30$765
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:40 pm
IAD
-
BCN
1 stop10h 55m
Multiple Airlines
Mon 8/177:15 pm
BCN
-
IAD
2 stops45h 30m
Multiple Airlines
Deal found 6/25$766
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/81:20 pm
IAD
-
BCN
1 stop15h 25m
Turkish Airlines
Tue 9/157:05 pm
BCN
-
IAD
1 stop22h 30m
Turkish Airlines
Deal found 6/26$767
This FlightHub deal was found by Cheapflights users on 6/29. 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.
Wed 8/261:20 pm
IAD
-
BCN
1 stop15h 25m
Turkish Airlines
Tue 9/227:05 pm
BCN
-
IAD
1 stop22h 30m
Turkish Airlines
Deal found 6/29$768
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:45 pm
IAD
-
BCN
1 stop22h 05m
TAP AIR PORTUGAL
Mon 10/1210:40 pm
BCN
-
IAD
1 stop22h 30m
TAP AIR PORTUGAL
Deal found 6/28$769
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/510:35 pm
IAD
-
BCN
1 stop14h 45m
TAP AIR PORTUGAL
Thu 8/208:20 pm
BCN
-
IAD
1 stop24h 50m
TAP AIR PORTUGAL
Deal found 6/30$770
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:05 pm
IAD
-
BCN
1 stop20h 15m
TAP AIR PORTUGAL
Mon 10/269:10 pm
BCN
-
IAD
1 stop23h 35m
TAP AIR PORTUGAL
Deal found 6/28$771
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:20 pm
IAD
-
BCN
2 stops14h 25m
Multiple Airlines
Fri 8/2810:00 am
BCN
-
IAD
2 stops18h 15m
Multiple Airlines
Deal found 6/25$772

Find flight deals from Dulles Intl to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Barcelona (S37). 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 June 30, 2026.

Round-trip from

$761
(Kiwi.com)

One-way from

$261
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,135
From Washington, D.C. Dulles Intl to Barcelona
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Barcelona
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($241 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in June 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Barcelona 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 June 30, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Girona

IAD - GRO

IADGRO

Washington, D.C. Dulles Intl

Tue 8/18

11:20 pm-1:15 am

3 stops19h 55m

Girona Costa Brava

Mon 8/31

11:20 pm-9:24 pm

2 stops28h 04m

$805

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 11/1

6:50 pm-9:00 am

Nonstop8h 10m

Barcelona-El Prat

Thu 11/12

10:30 am-2:00 pm

Nonstop9h 30m

$810

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Tue 9/29

6:35 pm-8:20 am

Nonstop7h 45m

Barcelona-El Prat

Mon 10/5

2:55 pm-4:45 pm

1 stop31h 50m

$815

Washington, D.C.Girona

IAD - GRO

IADGRO

Washington, D.C. Dulles Intl

Wed 8/12

9:45 am-10:55 pm

2 stops31h 10m

Girona Costa Brava

Wed 8/19

11:30 pm-4:18 pm

2 stops22h 48m

$861

Washington, D.C.Girona

IAD - GRO

IADGRO

Washington, D.C. Dulles Intl

Mon 9/14

8:30 pm-12:35 am

2 stops22h 05m

Girona Costa Brava

Sat 9/26

6:15 am-7:10 pm

2 stops18h 55m

$877

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Fri 9/4

10:50 pm-7:25 pm

1 stop38h 35m

Barcelona-El Prat

Mon 9/14

10:40 pm-3:10 pm

1 stop22h 30m

$883

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sat 9/26

6:26 pm-5:10 pm

2 stops16h 44m

Barcelona-El Prat

Mon 10/5

11:10 am-11:14 pm

2 stops18h 04m

$883

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 11/9

6:50 pm-9:00 am

Nonstop8h 10m

Barcelona-El Prat

Thu 11/19

6:50 am-8:05 pm

1 stop19h 15m

$903

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Thu 10/15

6:35 pm-8:20 am

Nonstop7h 45m

Barcelona-El Prat

Sun 11/15

10:30 am-2:00 pm

Nonstop9h 30m

$950

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Fri 9/18

3:45 pm-8:00 am

1 stop10h 15m

Barcelona-El Prat

Sun 9/20

11:15 am-2:05 pm

Nonstop8h 50m

$953

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Dulles Intl to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Barcelona

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona (average of $235). Flying from Washington, D.C. Dulles Intl Airport to Barcelona in June is currently the most expensive (average of $678). 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 IAD to BCN?

Find hourly flight availability from Dulles Intl to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 30, 2026.

When flying from Washington, D.C. Dulles Intl Airport to Barcelona, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Barcelona

Explore weekly flight availability from Dulles Intl to Barcelona. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 30, 2026.

The most flights from IAD to S37 are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

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

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Barcelona may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Barcelona

Get insights into the airlines that provide service to Barcelona. 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 Barcelona. Reviews last updated June 30, 2026.
Peruse reviews from past customers who have flown with Turkish Airlines,United Airlines, andTAP AIR PORTUGAL from Washington, D.C. Dulles Intl Airport to Barcelona to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.4
Good
4,430 reviews

Crew

7.8

Entertainment

7.5

Boarding

7.3

Food

7.5

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
Turkish Airlines
7.4
Good
4,430 reviews
Turkish Airlines
7.4
Good
4,430 reviews

Crew

7.8

Entertainment

7.5

Boarding

7.3

Food

7.5

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
United Airlines
7.4
Good
9,901 reviews
Turkish Airlines
7.4
Good
4,430 reviews

Crew

7.8

Entertainment

7.5

Boarding

7.3

Food

7.5

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
TAP AIR PORTUGAL
7.2
Good
2,308 reviews
Turkish Airlines
7.4
Good
4,430 reviews

Crew

7.8

Entertainment

7.5

Boarding

7.3

Food

7.5

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
Lufthansa
6.8
Okay
8,109 reviews
Turkish Airlines
7.4
Good
4,430 reviews

Crew

7.8

Entertainment

7.5

Boarding

7.3

Food

7.5

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
British Airways
6.7
Okay
8,088 reviews
Turkish Airlines
7.4
Good
4,430 reviews

Crew

7.8

Entertainment

7.5

Boarding

7.3

Food

7.5

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Barcelona. 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 Washington, D.C. Dulles Intl Airport to Barcelona?

    Airlines like TAP AIR PORTUGAL and Turkish Airlines fly from Washington, D.C. Dulles Intl Airport to Barcelona in about 15h 25m. The time it takes to get you to your destination can typically vary by up to 7h 20m. Airlines will cover a distance of 4046 mi. This flight may include one or multiple stops.

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

    According to our current data, TAP AIR PORTUGAL ($388), Icelandair ($389), and SWISS ($479) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Barcelona. These flights start at 51% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Turkish Airlines, with whom users have recently found tickets for as low as $265. However, be on the lookout for offers from TAP AIR PORTUGAL and Royal Air Maroc, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Barcelona for a low price.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Barcelona?

    When deciding which route to take from Washington, D.C. Dulles Intl Airport to Barcelona consider Washington, D.C. Dulles Intl - Barcelona-El Prat, Washington, D.C. Dulles Intl - Girona Costa Brava or Washington, D.C. Dulles Intl - Reus as they are the most popular.

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

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Barcelona are Air Canada (77%), United Airlines (77%) and Lufthansa (77%).

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

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Barcelona? While on average our users pay $3,585, our data indicates the cheapest price to be $624. The most popular route (Washington, D.C. Dulles Intl - Barcelona-El Prat), is priced around $596.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Barcelona?

    Flights departing from Washington, D.C. Dulles Intl Airport and landing in Barcelona layover in Lisbon most frequently.

  • What are some popular things to do or see while on a layover in Lisbon?

    Chiado, Praça do Marquês de Pombal, and Commerce Square are the most popular attractions in Lisbon if you're in need of something to do during your layover. Chiado, Praça do Marquês de Pombal and Commerce Square are located about 4.5 mi, 3.6 mi, and 4.7 mi, respectively from Lisbon Humberto Delgado if you are interested in checking them out. Travelers can rent a car at Lisbon Humberto Delgado for an average daily rate of $20 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Barcelona flights?

    Washington, D.C. Dulles Intl Airport to Barcelona flights that have layovers will least frequently stop in Madrid.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Barcelona 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 Washington, D.C. Dulles Intl Airport to Barcelona?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona (average of $235). Flying from Washington, D.C. Dulles Intl Airport to Barcelona in June is currently the most expensive (average of $678). 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

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Top 10 airlines flying from Dulles Intl to Barcelona

Discover the top 10 airlines that operate flights from Dulles Intl to Barcelona. 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 June 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$388Average$771FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$389Average$459FlexibilityNo cancel feeOn-time76%
SWISSCheapest$479Average$691FlexibilityNo cancel feeOn-time79%
DeltaCheapest$484Average$700FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$486Average$795FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$489Average$924FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$490Average$704FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$498Average$617FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$499Average$1,089FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$511Average$717FlexibilityNo cancel feeOn-time71%

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