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

Return flights

08 Mar - 15 Mar	TAP
10 Mar - 15 Mar	TAP
24 Mar - 08 Apr	TAP
24 Mar - 09 Apr	TAP
04 Mar - 09 Mar	TAP
04 Mar - 10 Mar	TAP
15 Mar - 22 Mar	TAP
09 Mar - 18 Mar	TAP
03 Mar - 10 Mar	TAP
07 Mar - 13 Mar	TAP
23 Mar - 30 Mar	TAP
11 Mar - 19 Mar	TAP
24 Mar - 08 Apr	Iberia	direct
25 Mar - 09 Apr	Lufthansa
15 Mar - 04 Apr	ITA Airways
29 Mar - 18 Apr	ITA Airways
18 Mar - 11 Apr	Lufthansa
25 Mar - 18 Apr	Royal Air Maroc
28 Mar - 09 Apr	United
26 Mar - 09 Apr	United

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 302€

Return flights