$340 Cheap Flights from Washington (IAD) to Barcelona (BCN)

View $340 flight on Mon, Sep 8, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Barcelona El Prat Airport (BCN)

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Cheap Flights from Washington to Barcelona (IAD-BCN)

Prices were available within the past 7 days and start at $340 for one-way flights and $399 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Fri, Nov 14 - Tue, Nov 18
IAD
Washington
BCN
Barcelona
$399 Roundtrip, just found
$399
Roundtrip
just found
Select TAP Portugal flight, departing Fri, Nov 14 from Washington to Barcelona, returning Tue, Nov 18, priced at $399 just found
Icelandair
Fri, Nov 14 - Tue, Nov 18
IAD
Washington
BCN
Barcelona
$462 Roundtrip, just found
$462
Roundtrip
just found
Select Icelandair flight, departing Fri, Nov 14 from Washington to Barcelona, returning Tue, Nov 18, priced at $462 just found
United
Tue, Nov 11 - Tue, Nov 18
IAD
Washington
BCN
Barcelona
$469 Roundtrip, found 1 hour ago
$469
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Nov 11 from Washington to Barcelona, returning Tue, Nov 18, priced at $469 found 1 hour ago
Air Canada
Tue, Nov 11 - Tue, Nov 18
IAD
Washington
BCN
Barcelona
$469 Roundtrip, found 1 hour ago
$469
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Tue, Nov 11 from Washington to Barcelona, returning Tue, Nov 18, priced at $469 found 1 hour ago
United
Wed, Aug 13 - Thu, Sep 11
IAD
Washington
BCN
Barcelona
$469 Roundtrip, found 5 hours ago
$469
Roundtrip
found 5 hours ago
Select United flight, departing Wed, Aug 13 from Washington to Barcelona, returning Thu, Sep 11, priced at $469 found 5 hours ago
Aer Lingus
Tue, Nov 11 - Tue, Nov 18
IAD
Washington
BCN
Barcelona
$476 Roundtrip, found 1 hour ago
$476
Roundtrip
found 1 hour ago
Select Aer Lingus flight, departing Tue, Nov 11 from Washington to Barcelona, returning Tue, Nov 18, priced at $476 found 1 hour ago
American Airlines
Wed, Oct 15 - Fri, Oct 24
IAD
Washington
BCN
Barcelona
$483 Roundtrip, found 1 day ago
$483
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 15 from Washington to Barcelona, returning Fri, Oct 24, priced at $483 found 1 day ago
Virgin Atlantic
Tue, Nov 11 - Tue, Nov 18
IAD
Washington
BCN
Barcelona
$484 Roundtrip, found 1 hour ago
$484
Roundtrip
found 1 hour ago
Select Virgin Atlantic flight, departing Tue, Nov 11 from Washington to Barcelona, returning Tue, Nov 18, priced at $484 found 1 hour ago
Delta
Sat, Nov 22 - Thu, Dec 4
IAD
Washington
BCN
Barcelona
$484 Roundtrip, just found
$484
Roundtrip
just found
Select Delta flight, departing Sat, Nov 22 from Washington to Barcelona, returning Thu, Dec 4, priced at $484 just found
British Airways
Tue, Nov 11 - Tue, Nov 18
IAD
Washington
BCN
Barcelona
$498 Roundtrip, found 1 hour ago
$498
Roundtrip
found 1 hour ago
Select British Airways flight, departing Tue, Nov 11 from Washington to Barcelona, returning Tue, Nov 18, priced at $498 found 1 hour ago

Find the cheapest month to fly from Washington (IAD) to Barcelona (BCN)

October is typically the cheapest month to fly

From $383 - $780 per traveler.

Graph displaying average flight prices per month

Alternative airports near Barcelona

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Barcelona Intl. BCN. Cheapest and Closest option available. Average driving time to city center is 18 minutes. Flights from $508
BCN
Barcelona Intl.
CheapestClosest
Average driving time to city center18 min
Flights from $508
Flights from Washington (IAD) to Barcelona (BCN)
Origin airport
Washington Dulles Intl.
Destination airport
Barcelona Intl.
Airlines serving
Aer Lingus, Air Canada, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, ITA Airways, Iberia, Icelandair, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic, avianca
Roundtrip price
$398
Distance
4047 mi
Average flight time
7 hours 50 mins

Washington to Barcelona Flights

The cheapest times to fly from Washington to Barcelona

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Barcelona are during the month of November. You can find some of the cheapest flights from Washington to Barcelona with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Barcelona

Sunday is one of the best days to book for cheap flights from Washington to Barcelona: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Barcelona

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Barcelona in 2025. You can also book with separate airlines for your outbound and return journeys, from $340 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Barcelona flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Barcelona airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Barcelona Intl. Airport (BCN) cost?
Cheap round-trip fares from Washington Dulles Intl. Airport (IAD) to Barcelona Intl. Airport (BCN) start at $469. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving IAD on August 19 2025 and touching down at BCN. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from IAD to BCN?
The cheapest flights from IAD to BCN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to BCN?
At the moment, the cheapest carrier operating one-way flights from IAD to BCN is United. You can book a seat on this route from $394. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAD on October 7 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Barcelona Intl. Airport (BCN)?
Nonstop flights from Washington Dulles Intl. Airport (IAD) to Barcelona Intl. Airport (BCN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to BCN?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from IAD to BCN?
With 88% of journeys typically arriving on schedule, Lufthansa has the best on-time performance for direct flights from Washington Dulles Intl. Airport (IAD) to Barcelona Intl. Airport (BCN). To monitor your flight status and get notified about any changes, head to the Expedia App.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Barcelona Intl. Airport (BCN)?
To land at Barcelona Intl. Airport (BCN) without delays, pick a flight that leaves Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Barcelona Intl. Airport (BCN) last-minute?
Last-minute bookings from IAD to BCN are usually more expensive. To lock in the lowest prices, start looking for flights early. That being said, if you're flexible with your travel plans, it's possible to score a cheap fare right before your trip.
Is it cheaper to book an IAD to BCN flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to BCN flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place takes the hassle out of travel planning. Just secure your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Barcelona Intl. Airport (BCN)?
Typically, you can reschedule or cancel your IAD to BCN flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, go to our Customer Service portal.

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*Available to One Key members.