Cheap flights from Washington, D.C. Dulles Intl Airport to Barcelona from $356

The cheapest month to fly to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport is in February. Flight prices, which tend to average around $597, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport during January instead. Flights to Barcelona-El Prat Airport in January, while not as cheap as those in February, still average around $614.

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Monday when prices can be found for as low as $1,016. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,292. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

Flying to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $998 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,206 on average. Flights to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Washington, D.C. Dulles Intl to Barcelona-El Prat for the best Washington, D.C. Dulles Intl - Barcelona-El Prat flight prices

You are more likely to see cheaper flights to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $854 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from Washington, D.C. Dulles Intl Airport for as low as $731 on momondo.

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Lisbon (LIS) was the most common stop: 53% of momondo users choosing 1-stop flights on this route connected there.

Flights via Zurich (ZRH) offer the lowest average round-trip price of $528.

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 10h 40m.

Amsterdam (AMS) has the shortest average layover time for this route: 1h 18m.

3 flights are operational daily from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport as of September 2026. The most popular departure time for this route is 6:00PM, with 100% of flights per day taking off in the evening.

The number of flights available between Washington, D.C. Dulles Intl Airport and Barcelona-El Prat Airport is 21 per week as of September 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.