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

Return flights

24 Jan - 31 Jan	Iberia
21 Jan - 26 Jan	Air Europa
20 Jan - 26 Jan	Iberia Express
29 Jan - 03 Feb	Iberia Express
20 Jan - 27 Jan	Iberia Express
23 Jan - 29 Jan	Air Europa
15 Jan - 19 Jan	Iberia Express
23 Jan - 31 Jan	United
26 Jan - 31 Jan	Iberia
21 Jan - 28 Jan	Iberia	direct
12 Jan - 19 Jan	Iberia
29 Jan - 05 Feb	Iberia	direct
28 Jan - 04 Feb	Iberia
26 Jan - 02 Feb	Iberia	direct
27 Jan - 03 Feb	Iberia	direct
29 Jan - 01 Feb	Iberia	direct
30 Jan - 02 Feb	Iberia	direct
31 Jan - 03 Feb	Iberia
30 Jan - 06 Feb	Iberia	direct
25 Jan - 01 Feb	Iberia

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

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 January from $405

Return flights