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

Return flights

30 Aug - 09 Sep	ITA Airways
30 Aug - 08 Sep	ITA Airways
26 Aug - 07 Sep	ITA Airways
28 Aug - 06 Sep	ITA Airways
27 Aug - 09 Sep	ITA Airways
28 Aug - 07 Sep	ITA Airways
30 Aug - 10 Sep	Delta
27 Aug - 10 Sep	Delta
27 Aug - 10 Sep	Iberia	direct
27 Aug - 09 Sep	Iberia	direct
21 Aug - 24 Aug	TAP
27 Aug - 30 Aug	TAP
21 Aug - 30 Aug	TAP
20 Aug - 28 Aug	British Airways
11 Aug - 18 Aug	Air Europa
11 Aug - 24 Aug	Iberia	direct
23 Aug - 31 Aug	Delta
20 Aug - 30 Aug	ITA Airways
22 Aug - 31 Aug	United
19 Aug - 30 Aug	Delta

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

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 Madrid to Washington in August from $546

Return flights