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

Return flights

28 Jul - 22 Aug	Iberia	direct
21 Jul - 01 Aug	Aer Lingus
15 Jul - 08 Aug	Aer Lingus
04 Jul - 25 Jul	Aer Lingus
28 Jul - 04 Aug	Iberia	direct
29 Jul - 05 Aug	Iberia	direct
02 Jul - 25 Jul	Aer Lingus
27 Jul - 03 Aug	Iberia
29 Jul - 01 Aug	Iberia
31 Jul - 07 Aug	Iberia	direct
30 Jul - 06 Aug	Iberia	direct
21 Jul - 28 Jul	Iberia	direct
22 Jul - 29 Jul	Iberia	direct
21 Jul - 01 Aug	Iberia	direct
23 Jul - 30 Jul	Iberia	direct
24 Jul - 31 Jul	Iberia	direct
20 Jul - 27 Jul	Iberia	direct
16 Jul - 23 Jul	Iberia
17 Jul - 24 Jul	Iberia	direct
19 Jul - 26 Jul	Iberia	direct

Also check the deals for one-way flights from Boston to Madrid 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 Boston to Madrid in July from $483

Return flights