Cheapest return flights from Washington to Barcelona in September from $475

AirHint found the following cheapest return flights from Washington (DCA) to Barcelona (BCN) in September 2025 (see full year).

Return flights

20 Sep - 16 Oct Air Canada
03 Sep - 17 Sep British Airways
08 Sep - 25 Sep British Airways
09 Sep - 16 Sep United
03 Sep - 15 Sep British Airways
04 Sep - 07 Sep British Airways
15 Sep - 22 Sep United
17 Sep - 29 Sep jetBlue
08 Sep - 26 Sep Iberia
18 Sep - 29 Sep jetBlue
30 Sep - 06 Oct British Airways
09 Sep - 21 Sep British Airways

Also check the deals for one-way flights from Washington to Barcelona in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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