Cheapest return flights from Madrid to Boston in September from $319

Best time to book flights for Madrid (MAD) to Boston (BOS) flights at AirHint

AirHint found the following cheapest return flights from Madrid (MAD) to Boston (BOS) in September 2025 (see full year).

Return flights

10 Sep - 18 Sep Fly Play
07 Sep - 20 Sep Fly Play
03 Sep - 09 Sep Fly Play
22 Sep - 29 Sep SWISS
03 Sep - 17 Sep United
09 Sep - 21 Sep SWISS
03 Sep - 13 Sep Fly Play
03 Sep - 07 Sep United
25 Sep - 02 Oct TAP
01 Sep - 11 Sep Lufthansa
06 Sep - 27 Sep Lufthansa
25 Sep - 02 Oct Finnair direct

Also check the deals for one-way flights from Madrid to Boston in September.

Skyscanner

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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