AirHint found the following cheapest return flights from Washington (IAD) to Madrid (MAD) in June 2025 (see full year).

Return flights

30 Jun - 10 Jul	Delta
30 Jun - 03 Jul	Lufthansa
23 Jun - 14 Jul	SWISS
23 Jun - 30 Jun	Air Canada
23 Jun - 08 Jul	United	direct
24 Jun - 15 Jul	Air Canada
21 Jun - 28 Jun	Brussels Airlines
22 Jun - 31 Jul	SWISS
21 Jun - 03 Jul	Brussels Airlines
18 Jun - 28 Jun	Brussels Airlines
23 Jun - 30 Jun	United	direct
23 Jun - 14 Jul	United	direct
27 Jun - 18 Jul	United
26 Jun - 05 Jul	Brussels Airlines
20 Jun - 27 Jun	United
22 Jun - 29 Jun	Air France
20 Jun - 27 Jun	United	direct
21 Jun - 29 Jun	United
20 Jun - 28 Jun	United
19 Jun - 29 Jun	United

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

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 June from $642

Return flights