AirHint found the following cheapest return flights from Washington (IAD) to Barcelona (BCN) in April 2026 (see full year).

Return flights

19 Apr - 09 May	Icelandair
19 Apr - 26 Apr	Icelandair
15 Apr - 22 Apr	Scandinavian Airlines
23 Apr - 30 Apr	Scandinavian Airlines
27 Apr - 04 May	British Airways
06 Apr - 13 Apr	SWISS
11 Apr - 18 Apr	Icelandair

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

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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Cheapest return flights from Washington to Barcelona in April from $450

Return flights