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

Return flights

24 Mar - 31 Mar	Air Canada
09 Mar - 17 Mar	Air Canada
04 Mar - 12 Mar	Air Canada
05 Mar - 13 Mar	Air Canada
03 Mar - 11 Mar	Air Canada
22 Mar - 29 Mar	Air Canada
26 Mar - 02 Apr	Air Canada
08 Mar - 17 Mar	British Airways
18 Mar - 25 Mar	Air Canada
29 Mar - 05 Apr	Air Canada
07 Mar - 13 Mar	Air Canada
17 Mar - 24 Mar	British Airways
25 Mar - 01 Apr	jetBlue
28 Mar - 04 Apr	Air Canada
27 Mar - 03 Apr	Air Canada
24 Mar - 05 Apr	TAP
30 Mar - 09 Apr	Air Canada
25 Mar - 06 Apr	TAP
27 Mar - 01 Apr	Icelandair
25 Mar - 05 Apr	TAP

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

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 March from 391€

Return flights