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

Return flights

09 Oct - 13 Oct	Wizz Air Malta
09 Oct - 14 Oct	Wizz Air Malta
16 Oct - 21 Oct	Wizz Air Malta
09 Oct - 16 Oct	Wizz Air Malta
23 Oct - 30 Oct	Air Europa
13 Oct - 20 Oct	Air Europa
22 Oct - 01 Nov	Iberia Express
16 Oct - 20 Oct	Wizz Air Malta
30 Oct - 03 Nov	Air Europa
29 Oct - 04 Nov	Air Europa
01 Oct - 05 Oct	Air Europa
15 Oct - 19 Oct	Wizz Air Malta
09 Oct - 12 Oct	Air Europa
24 Oct - 09 Nov	Delta
27 Oct - 07 Nov	KLM
24 Oct - 06 Nov	Delta
30 Oct - 05 Nov	Delta
24 Oct - 02 Nov	Delta
25 Oct - 03 Nov	KLM
27 Oct - 03 Nov	Iberia	direct

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

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 October from 368€

Return flights