Cheapest return flights from Boston to Madrid in August from $425

AirHint found the following cheapest return flights from Boston (BOS) to Madrid (MAD) in August 2026 (see full year).

Return flights

12 Aug - 05 Sep Iberia direct
18 Aug - 12 Sep Finnair direct
19 Aug - 26 Aug Iberia direct
18 Aug - 25 Aug Iberia direct
02 Aug - 22 Aug Iberia direct
12 Aug - 19 Aug Iberia
14 Aug - 21 Aug Iberia direct
25 Aug - 01 Sep Iberia direct
16 Aug - 23 Aug Iberia direct
17 Aug - 24 Aug Iberia direct
13 Aug - 20 Aug Iberia
21 Aug - 12 Sep Iberia direct
18 Aug - 21 Aug Iberia
17 Aug - 20 Aug Iberia
31 Aug - 07 Sep Iberia
30 Aug - 06 Sep Iberia
26 Aug - 02 Sep Iberia
27 Aug - 03 Sep Iberia
30 Aug - 02 Sep Iberia
31 Aug - 03 Sep Iberia

Also check the deals for one-way flights from Boston 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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