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

Return flights

07 Jul - 26 Aug	KLM
30 Jul - 18 Aug	Air Canada
30 Jul - 19 Aug	TAP
31 Jul - 19 Aug	Air Canada
25 Jul - 24 Aug	Air Canada
06 Jul - 23 Jul	Lufthansa
29 Jul - 07 Aug	Air Canada
27 Jul - 07 Aug	Air Canada
30 Jul - 06 Aug	Air Canada
15 Jul - 23 Jul	Air Canada
18 Jul - 23 Aug	Air Canada
01 Jul - 08 Jul	Lufthansa
01 Jul - 10 Jul	Lufthansa
15 Jul - 24 Jul	Air Canada
13 Jul - 22 Jul	Lufthansa
15 Jul - 22 Jul	Air Canada
08 Jul - 08 Aug	Air Canada
08 Jul - 22 Jul	Lufthansa
23 Jul - 28 Jul	Air Canada
09 Jul - 28 Jul	Air Canada

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

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

Cheapest return flights from Washington to Madrid in July from $410

Return flights