Cheapest one-way flights from Washington to Madrid in August from $289

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

One-Way flights

11 Aug Icelandair
03 Aug TAP
15 Aug Allegiant Air
31 Aug Icelandair
16 Aug Icelandair
18 Aug Icelandair
09 Aug Allegiant Air
10 Aug TAP
21 Aug TAP
26 Aug TAP

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

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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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