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

Return flights

01 Apr - 08 Apr	TAP
21 Apr - 28 Apr	TAP
22 Apr - 29 Apr	TAP
24 Apr - 04 May	TAP
02 Apr - 09 Apr	TAP
12 Apr - 19 Apr	TAP
21 Apr - 28 Apr	United	direct
22 Apr - 29 Apr	United	direct
11 Apr - 18 Apr	TAP
12 Apr - 19 Apr	Iberia	direct
02 Apr - 09 Apr	United	direct
24 Apr - 04 May	Finnair	direct

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

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 April from 371€

Return flights