Cheapest return flights from Washington to Madrid in May from $475

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

Return flights

05 May - 11 May ITA Airways
05 May - 19 May TAP
04 May - 20 May Royal Air Maroc
03 May - 20 May Iberia
05 May - 09 May ITA Airways
04 May - 20 May United direct
03 May - 20 May United direct
05 May - 20 May United
26 May - 03 Jun Aer Lingus
26 May - 02 Jun Aer Lingus
15 May - 19 May Scandinavian Airlines
11 May - 15 May Scandinavian Airlines
27 May - 03 Jun TAP
28 May - 03 Jun TAP
15 May - 07 Jun TAP
16 May - 09 Jun Aer Lingus
26 May - 08 Jun TAP
16 May - 09 Jun Iberia direct
17 May - 01 Jun Air Canada
16 May - 01 Jun Air Canada

Also check the deals for one-way flights from Washington to Madrid in May.

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