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

Return flights

02 Jul - 08 Jul	Fly Play
09 Jul - 19 Jul	Fly Play
02 Jul - 05 Jul	Fly Play
09 Jul - 15 Jul	Fly Play
14 Jul - 21 Jul	TAP
31 Jul - 30 Aug	TAP
28 Jul - 17 Aug	TAP
26 Jul - 16 Aug	TAP
31 Jul - 12 Aug	TAP
29 Jul - 11 Aug	TAP
26 Jul - 09 Aug	TAP
16 Jul - 23 Jul	Wizz Air Malta
29 Jul - 05 Aug	Condor
17 Jul - 28 Jul	Iberia
21 Jul - 28 Jul	Iberia
17 Jul - 30 Jul	Iberia
22 Jul - 28 Jul	Iberia
22 Jul - 02 Aug	KLM
24 Jul - 03 Aug	KLM
31 Jul - 03 Aug	KLM

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 479€

Return flights