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

Return flights

05 Mar - 10 Mar	Iberia For Level	direct
12 Mar - 16 Mar	Iberia For Level	direct
09 Mar - 16 Mar	Iberia For Level	direct
24 Mar - 20 Apr	Iberia	direct
02 Mar - 09 Mar	Iberia
02 Mar - 09 Mar	Iberia For Level	direct
24 Mar - 02 Apr	Iberia For Level	direct
01 Mar - 08 Mar	Lufthansa
23 Mar - 31 Mar	KLM
27 Mar - 06 Apr	Delta
26 Mar - 05 Apr	Delta
25 Mar - 05 Apr	Delta
31 Mar - 08 Apr	Iberia	direct
23 Mar - 02 Apr	Delta
24 Mar - 04 Apr	Delta
22 Mar - 02 Apr	Delta
20 Mar - 02 Apr	Delta
26 Mar - 31 Mar	Iberia For Level	direct
05 Mar - 18 Mar	TAP
23 Mar - 31 Mar	Iberia For Level	direct

Also check the deals for one-way flights from Barcelona 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 Barcelona to Boston in March from $329

Return flights