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

Return flights

08 Mar - 17 Mar	United
03 Mar - 11 Mar	United
03 Mar - 10 Mar	United
08 Mar - 18 Mar	British Airways
01 Mar - 10 Mar	British Airways
04 Mar - 10 Mar	Iberia
01 Mar - 17 Mar	British Airways
15 Mar - 24 Mar	Iberia
18 Mar - 25 Mar	Air Canada
22 Mar - 01 Apr	Air Canada
24 Mar - 01 Apr	British Airways
15 Mar - 23 Mar	British Airways
21 Mar - 17 Apr	British Airways
30 Mar - 21 Apr	British Airways
31 Mar - 10 Apr	Air Canada
30 Mar - 07 Apr	Delta
25 Mar - 01 Apr	British Airways
22 Mar - 18 Apr	British Airways
26 Mar - 08 Apr	British Airways
31 Mar - 05 Apr	British Airways

Also check the deals for one-way flights from Washington to Madrid 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 Madrid in March from $476

Return flights