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

Return flights

03 Mar - 10 Mar	Iberia Express
03 Mar - 14 Mar	Iberia Express
24 Mar - 31 Mar	Iberia Express
24 Mar - 05 Apr	Iberia Express
27 Mar - 06 Apr	Air France
27 Mar - 03 Apr	Air France
27 Mar - 02 Apr	Delta
02 Mar - 13 Mar	British Airways
28 Mar - 10 Apr	Air France
03 Mar - 10 Mar	Finnair	direct
03 Mar - 14 Mar	Finnair	direct
02 Mar - 13 Mar	Finnair	direct

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

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 March from 334€

Return flights