Cheapest return flights from Washington to Madrid in May from 397€

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

Return flights

06 May - 20 May TAP
06 May - 20 May Finnair direct
05 May - 13 May TAP
15 May - 26 May TAP
02 May - 16 May TAP
15 May - 26 May Finnair direct
02 May - 16 May Finnair direct
30 May - 11 Jun Air Canada
10 May - 30 May Delta
30 May - 11 Jun Iberia direct
10 May - 30 May Finnair direct

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

Skyscanner

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.

Book a cheap hotel in Madrid

Cheap car rent in Madrid

Feel free to contact us with any feedback or request another flight research.