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$237+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BCN
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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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 9 days in advance, depart on a Monday or Sunday and return on a Wednesday

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 February 11, 2026.

This oojo deal was found by Cheapflights users on 2/9. 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.
Sun 11/810:30 pm
IAD
-
BCN
1 stop19h 15m
TAP AIR PORTUGAL
Thu 11/199:10 pm
BCN
-
IAD
1 stop29h 25m
TAP AIR PORTUGAL
Deal found 2/9$459
This Cheapflightsfares deal was found by Cheapflights users on 2/11. 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.
Mon 8/2410:35 pm
IAD
-
BCN
1 stop17h 15m
TAP AIR PORTUGAL
Wed 9/211:25 am
BCN
-
IAD
1 stop15h 10m
TAP AIR PORTUGAL
Deal found 2/11$463
This oojo deal was found by Cheapflights users on 2/10. 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.
Thu 8/2010:35 pm
IAD
-
BCN
1 stop17h 15m
TAP AIR PORTUGAL
Fri 8/283:00 pm
BCN
-
IAD
1 stop11h 35m
TAP AIR PORTUGAL
Deal found 2/10$472
This FlightHub deal was found by Cheapflights users on 2/8. 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.
Thu 4/168:20 pm
IAD
-
BCN
1 stop15h 50m
Scandinavian Airlines
Mon 4/2010:35 am
BCN
-
IAD
1 stop12h 15m
Scandinavian Airlines
Deal found 2/8$473
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Sun 2/2210:30 pm
IAD
-
BCN
1 stop12h 45m
TAP AIR PORTUGAL
Sun 3/19:10 pm
BCN
-
IAD
1 stop24h 05m
TAP AIR PORTUGAL
Deal found 2/10$476
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Sun 2/2210:30 pm
IAD
-
BCN
1 stop19h 15m
TAP AIR PORTUGAL
Mon 3/26:05 pm
BCN
-
IAD
1 stop26h 30m
TAP AIR PORTUGAL
Deal found 2/9$478
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Sun 2/1510:30 pm
IAD
-
BCN
1 stop29h 35m
TAP AIR PORTUGAL
Thu 2/266:45 am
BCN
-
IAD
1 stop14h 30m
TAP AIR PORTUGAL
Deal found 2/9$480
This oojo deal was found by Cheapflights users on 2/10. 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.
Sun 3/811:30 pm
IAD
-
BCN
1 stop19h 15m
TAP AIR PORTUGAL
Wed 3/186:05 pm
BCN
-
IAD
1 stop27h 10m
TAP AIR PORTUGAL
Deal found 2/10$482
This FlightHub deal was found by Cheapflights users on 2/8. 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 4/138:20 pm
IAD
-
BCN
1 stop15h 50m
Scandinavian Airlines
Mon 4/2010:35 am
BCN
-
IAD
1 stop12h 15m
Scandinavian Airlines
Deal found 2/8$483
This Mytrip deal was found by Cheapflights users on 2/10. 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 4/168:20 pm
IAD
-
BCN
2 stops32h 40m
Scandinavian Airlines
Wed 4/227:00 pm
BCN
-
IAD
1 stop27h 50m
Scandinavian Airlines
Deal found 2/10$485
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Sat 3/2810:00 pm
IAD
-
REU
1 stop18h 10m
Multiple Airlines
Sat 4/411:25 am
REU
-
IAD
1 stop13h 45m
Multiple Airlines
Deal found 2/11$1,212
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:05 pm
IAD
-
REU
1 stop11h 30m
Multiple Airlines
Wed 4/12:20 pm
REU
-
IAD
2 stops32h 30m
Multiple Airlines
Deal found 2/7$1,269

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 February 11, 2026.

Round-trip from

$472
(oojo)

One-way from

$237
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$568
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. 19% potential increase in price ($182 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 11, 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

Dulles Intl

Fly to

Barcelona

Route

Depart

Return

Price

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 5/11

8:20 pm-6:10 pm

1 stop15h 50m

Barcelona-El Prat

Sat 5/23

7:00 pm-4:50 pm

1 stop27h 50m

$556

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 2/23

8:30 pm-6:20 pm

1 stop15h 50m

Barcelona-El Prat

Fri 2/27

7:10 pm-6:50 pm

1 stop29h 40m

$585

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Thu 5/7

12:58 pm-11:10 am

2 stops16h 12m

Barcelona-El Prat

Fri 5/22

10:25 am-4:50 pm

1 stop12h 25m

$622

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sat 3/7

1:30 pm-11:50 pm

1 stop28h 20m

Barcelona-El Prat

Sun 3/15

2:25 pm-8:20 pm

1 stop34h 55m

$700

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 4/19

6:00 pm-8:20 am

Nonstop8h 20m

Barcelona-El Prat

Tue 4/28

11:15 am-2:30 pm

Nonstop9h 15m

$771

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 4/13

12:40 pm-8:00 am

1 stop13h 20m

Barcelona-El Prat

Tue 4/21

11:15 am-2:30 pm

Nonstop9h 15m

$774

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Wed 4/22

6:00 pm-8:20 am

Nonstop8h 20m

Barcelona-El Prat

Sun 5/3

11:15 am-2:30 pm

Nonstop9h 15m

$821

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Thu 4/23

6:00 pm-8:20 am

Nonstop8h 20m

Barcelona-El Prat

Mon 5/4

11:15 am-2:30 pm

Nonstop9h 15m

$871

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sat 4/11

6:25 pm-8:20 am

Nonstop7h 55m

Barcelona-El Prat

Sat 4/18

11:15 am-2:30 pm

Nonstop9h 15m

$871

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sat 4/25

6:00 pm-8:20 am

Nonstop8h 20m

Barcelona-El Prat

Sat 5/2

12:15 pm-6:58 pm

1 stop12h 43m

$874

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 23 results
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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

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Barcelona. Price data was last updated on February 6, 2026.

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 9 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 Washington, D.C. Dulles Intl Airport to Barcelona?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona (average of $389). Flying from Washington, D.C. Dulles Intl Airport to Barcelona in June is currently the most expensive (average of $682). 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.

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 February 11, 2026.
Peruse reviews from past customers who have flown with United Airlines, TAP AIR PORTUGAL, and Iberia 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.
United Airlines
7.4
Good
9,274 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,274 reviews
United Airlines
7.4
Good
9,274 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
TAP AIR PORTUGAL
7.1
Good
2,139 reviews
United Airlines
7.4
Good
9,274 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Iberia
7.0
Good
3,114 reviews
United Airlines
7.4
Good
9,274 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,779 reviews
United Airlines
7.4
Good
9,274 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,730 reviews
United Airlines
7.4
Good
9,274 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 Scandinavian Airlines and Turkish Airlines fly from Washington, D.C. Dulles Intl Airport to Barcelona in about 15h 50m. The time it takes to get you to your destination can typically vary by up to 12h 30m. 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 ($380), Icelandair ($390), and Scandinavian Airlines ($398) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Barcelona. These flights start at 50% 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 Icelandair, with whom users have recently found tickets for as low as $206. However, be on the lookout for offers from Turkish Airlines and TAP AIR PORTUGAL, 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 - Reus or Washington, D.C. Dulles Intl - Girona Costa Brava 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 (81%), United Airlines (81%) and Lufthansa (81%).

  • 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 $2,640, our data indicates the cheapest price to be $694. The most popular route (Washington, D.C. Dulles Intl - Barcelona-El Prat), is priced around $452.

  • 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 Londres 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 Londres are located about 4.5 mi, 3.6 mi, and 2.3 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 $18 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona (average of $389). Flying from Washington, D.C. Dulles Intl Airport to Barcelona in June is currently the most expensive (average of $682). 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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$380Average$630FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$390Average$479FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$398Average$569FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$461Average$764FlexibilityNo cancel feeOn-time77%
DeltaCheapest$468Average$738FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$489Average$889FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$498Average$670FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$499Average$1,133FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$511Average$765FlexibilityNo cancel feeOn-time71%
ITA AirwaysCheapest$514Average$856FlexibilityNo cancel feeOn-time81%

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