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

Return flights

29 Jul - 05 Aug	Condor
29 Jul - 07 Aug	Condor
29 Jul - 09 Aug	Condor
30 Jul - 10 Aug	Condor
28 Jul - 03 Aug	KLM
28 Jul - 05 Aug	KLM
28 Jul - 11 Aug	KLM
30 Jul - 09 Aug	KLM
31 Jul - 09 Aug	KLM
28 Jul - 04 Aug	KLM
24 Jul - 29 Jul	Condor
23 Jul - 29 Jul	Condor
23 Jul - 30 Jul	Condor
23 Jul - 27 Jul	Condor
24 Jul - 31 Jul	Condor
23 Jul - 28 Jul	Condor
22 Jul - 27 Jul	Turkish Airlines
24 Jul - 27 Jul	Condor
24 Jul - 30 Jul	Condor
22 Jul - 24 Jul	Turkish Airlines

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

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 Boston in July from 560€

Return flights