Cheapest one-way flights from Washington to Madrid in May from 373€

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

One-Way flights

20 May United
22 May Scandinavian Airlines
26 May TAP
20 May Lufthansa direct
23 May Scandinavian Airlines
26 May Brussels Airlines direct
22 May Brussels Airlines direct
23 May Brussels Airlines direct

Also check the deals for return flights from Washington to Madrid in May.

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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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