HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Barcelona

Cheap flights from Dulles Intl (IAD) to Barcelona

IAD — BCN
Oct 28 — Nov 41
Wed 10/28
Wed 11/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Barcelona with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Barcelona are usually found in January or February, booked 63 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Find flight deals from Dulles Intl to Barcelona

Popular in

July

Cheapest in

January

Average price

$935
Highest demand for flights based on searches. 20% potential increase in price ($229 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

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

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?

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 3 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 $577). Flying from Washington, D.C. Dulles Intl Airport to Barcelona in July is currently the most expensive (average of $1,202). 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?

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.

Reviews of airlines servicing Barcelona

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
4,454 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Crew

7.8

Overall

7.4

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
Turkish Airlines
7.4
Good
4,454 reviews
Turkish Airlines
7.4
Good
4,454 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Crew

7.8

Overall

7.4

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
United Airlines
7.4
Good
10,248 reviews
Turkish Airlines
7.4
Good
4,454 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Crew

7.8

Overall

7.4

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
TAP AIR PORTUGAL
7.2
Good
2,386 reviews
Turkish Airlines
7.4
Good
4,454 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Crew

7.8

Overall

7.4

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
Lufthansa
6.8
Okay
8,247 reviews
Turkish Airlines
7.4
Good
4,454 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Crew

7.8

Overall

7.4

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
British Airways
6.7
Okay
8,238 reviews
Turkish Airlines
7.4
Good
4,454 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Crew

7.8

Overall

7.4

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future

Related info for your journey

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

    According to our current data, Icelandair ($390), TAP AIR PORTUGAL ($407), and Delta ($484) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Barcelona. These flights start at 55% 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 $267. However, be on the lookout for offers from British Airways and Aer Lingus, 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 (63%), United Airlines (63%) and Lufthansa (63%).

  • 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 $4,086, our data indicates the cheapest price to be $885. The most popular route (Washington, D.C. Dulles Intl - Barcelona-El Prat), is priced around $490.

  • 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 $16 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona (average of $577). Flying from Washington, D.C. Dulles Intl Airport to Barcelona in July is currently the most expensive (average of $1,202). 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

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Dulles Intl to Barcelona

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$390Average$463FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$407Average$782FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$484Average$812FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$486Average$1,007FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$490Average$704FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$491Average$729FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$503Average$1,096FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$508Average$785FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$511Average$717FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$520Average$1,176FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.