AirHint found the following cheapest one-way flights from Madrid (MAD) to Boston (BOS) in August 2025 (see full year).

One-Way flights

29 Aug	jetBlue	direct
28 Aug	jetBlue	direct
23 Aug	Iberia Express
25 Aug	Wizz Air
20 Aug	Ryanair
27 Aug	Air Europa
31 Aug	Iberia Express
21 Aug	Wizz Air Malta
17 Aug	Iberia Express
03 Aug	Iberia Express

Also check the deals for return flights from Madrid to Boston in August.

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 one-way flights from Madrid to Boston in August from 213€

One-Way flights