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$357+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BCN
Mar 26 — Apr 21
Wed 3/26
Wed 4/2
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Barcelona are usually found in January or February, booked 9 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap 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 March 21, 2025.

Round-trip from

$576
(Mytrip)

One-way from

$357
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$746
From Washington, D.C. Dulles Intl to Barcelona
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One-way flight from Washington, D.C. Dulles Intl to Barcelona
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Highest demand for flights based on searches. 24% potential increase in price ($282 potential increase over avg. RT price).
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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 March 2025
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Find 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 March 21, 2025.

This Mytrip deal was found by Cheapflights users on 3/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/710:05 pmIAD - BCN
1 stop14h 05mScandinavian Airlines
Thu 5/157:00 pmBCN - IAD
1 stop30h 59mScandinavian Airlines
Deal found 3/19$576
This Mytrip deal was found by Cheapflights users on 3/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/610:05 pmIAD - BCN
2 stops18h 40mMultiple Airlines
Tue 4/157:30 amBCN - IAD
2 stops18h 29mMultiple Airlines
Deal found 3/20$579
This Booking.com deal was found by Cheapflights users on 3/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/219:40 pmIAD - BCN
1 stop15h 30mRoyal Air Maroc
Thu 3/277:10 pmBCN - IAD
1 stop29h 30mRoyal Air Maroc
Deal found 3/20$582
This FlightHub deal was found by Cheapflights users on 3/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/248:30 pmIAD - BCN
1 stop12h 15mIcelandair
Mon 9/13:45 pmBCN - IAD
1 stop12h 25mIcelandair
Deal found 3/20$583
This Iberia deal was found by Cheapflights users on 3/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/166:00 pmIAD - BCN
1 stop14h 20mIberia
Mon 11/246:00 pmBCN - IAD
1 stop28h 30mIberia
Deal found 3/20$584
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/255:20 pmIAD - BCN
1 stop11h 00mAer Lingus
Fri 9/511:00 amBCN - IAD
1 stop13h 55mAer Lingus
Deal found 3/19$595
This oojo deal was found by Cheapflights users on 3/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/410:40 pmIAD - BCN
1 stop13h 00mBritish Airways
Mon 8/189:10 pmBCN - IAD
2 stops23h 50mBritish Airways
Deal found 3/20$598
This American Airlines deal was found by Cheapflights users on 3/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/410:40 pmIAD - BCN
1 stop15h 40mAmerican Airlines
Wed 5/149:45 amBCN - IAD
2 stops15h 47mAmerican Airlines
Deal found 3/20$606
This FlightHub deal was found by Cheapflights users on 3/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:30 pmIAD - BCN
1 stop15h 05mTurkish Airlines
Wed 10/297:50 amBCN - IAD
1 stop17h 40mTurkish Airlines
Deal found 3/20$644
This Gotogate deal was found by Cheapflights users on 3/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2810:20 pmIAD - BCN
1 stop17h 30mTAP AIR PORTUGAL
Mon 5/58:10 pmBCN - IAD
1 stop25h 10mTAP AIR PORTUGAL
Deal found 3/20$654
This Cheapflightsfares deal was found by Cheapflights users on 3/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/94:30 pmIAD - BCN
1 stop17h 25mITA Airways
Sat 8/236:20 amBCN - IAD
1 stop14h 20mITA Airways
Deal found 3/19$656
This Delta deal was found by Cheapflights users on 3/19. 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.
Sat 9/207:05 pmIAD - BCN
1 stop10h 50mDelta
Mon 9/299:00 amBCN - IAD
1 stop15h 28mDelta
Deal found 3/19$662

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 March 21, 2025.
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

Wed 5/7

10:05 pm-6:10 pm

1 stop14h 05m

Barcelona-El Prat

Thu 5/15

7:00 pm-7:59 pm

1 stop30h 59m

$576

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 4/6

10:05 pm-10:45 pm

2 stops18h 40m

Barcelona-El Prat

Tue 4/15

7:30 am-7:59 pm

2 stops18h 29m

$579

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 8/24

8:30 pm-2:45 pm

1 stop12h 15m

Barcelona-El Prat

Mon 9/1

3:45 pm-10:10 pm

1 stop12h 25m

$583

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 5/4

10:40 pm-8:20 pm

1 stop15h 40m

Barcelona-El Prat

Wed 5/14

9:15 am-3:00 pm

1 stop11h 45m

$593

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 8/25

5:20 pm-10:20 am

1 stop11h 00m

Barcelona-El Prat

Fri 9/5

11:00 am-6:55 pm

1 stop13h 55m

$595

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 8/4

10:40 pm-5:40 pm

1 stop13h 00m

Barcelona-El Prat

Mon 8/18

9:10 pm-3:00 pm

2 stops23h 50m

$598

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 5/4

10:40 pm-8:20 pm

1 stop15h 40m

Barcelona-El Prat

Wed 5/14

9:45 am-7:32 pm

2 stops15h 47m

$606

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 4/28

10:20 pm-9:50 pm

1 stop17h 30m

Barcelona-El Prat

Mon 5/5

8:10 pm-3:20 pm

1 stop25h 10m

$654

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sat 8/9

4:30 pm-3:55 pm

1 stop17h 25m

Barcelona-El Prat

Sat 8/23

6:20 am-2:40 pm

1 stop14h 20m

$656

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Wed 4/23

1:30 pm-11:10 pm

1 stop27h 40m

Barcelona-El Prat

Tue 5/6

6:30 pm-11:45 am

1 stop23h 15m

$665

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

Showing 1-10 of 31 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 March 14, 2025.

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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona (average of $523). Flying from Washington, D.C. Dulles Intl Airport to Barcelona in June is currently the most expensive (average of $1,085). 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 March 21, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Barcelona at noon. Doing so could potentially save you 35% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Barcelona?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Barcelona. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Barcelona flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Barcelona by month

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

In terms of precipitation, rainfall in Barcelona ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona when rainfall is around 0.8 in.

Temperature in Barcelona by month

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

If weather is an important factor for your trip to Barcelona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 March 21, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Barcelona, such as Delta, KLM and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,895 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,895 reviews
Delta
8.0
Very good
7,895 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,319 reviews
Delta
8.0
Very good
7,895 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,567 reviews
Delta
8.0
Very good
7,895 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,422 reviews
Delta
8.0
Very good
7,895 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,895 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    According to our current data, Scandinavian Airlines ($576), Iberia ($593), and British Airways ($603) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Barcelona. These flights start at 34% 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 TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $390. However, be on the lookout for offers from Scandinavian Airlines 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 - 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 (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 $4,998, our data indicates the cheapest price to be $829. The most popular route (Washington, D.C. Dulles Intl - Barcelona-El Prat), is priced around $517.

  • 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. Madrid sees the second most layovers for non-direct flights flying from Washington, D.C. Dulles Intl Airport to Barcelona.

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

    Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém 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 Centro Cultural de Belém are located about 4.5 mi, 3.6 mi, and 6.9 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 $21 to make sightseeing during their layover a little easier.

  • What are some popular points of interest to see during a layover in Madrid?

    Puerta del Sol, Plaza Mayor, and Museo del Prado are the most popular attractions in Madrid if you're in need of something to do during your layover. Puerta del Sol, Plaza Mayor, and Museo del Prado can be accessed by traveling approximately 8.4 mi, 8.6 mi, and 8.1 mi, respectively from Madrid Barajas. Those on a layover in Madrid in need of a rental car can book one at Madrid Barajas for about $29.

  • 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 Dublin.

  • 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona (average of $523). Flying from Washington, D.C. Dulles Intl Airport to Barcelona in June is currently the most expensive (average of $1,085). 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 March 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$316Average$409FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$378Average$640FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$465Average$606FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$498Average$920FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$514Average$860FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$525Average$823FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$529Average$772FlexibilityNo cancel feeOn-time77%
Royal Air MarocCheapest$560Average$606FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$600Average$871FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$605Average$743FlexibilityNo cancel feeOn-time77%
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