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

Return flights

30 Mar - 06 Apr	TAP
03 Mar - 16 Mar	TAP
02 Mar - 10 Mar	TAP
03 Mar - 10 Mar	TAP
08 Mar - 19 Mar	TAP
09 Mar - 17 Mar	TAP
24 Mar - 05 Apr	TAP
29 Mar - 05 Apr	TAP
09 Mar - 15 Mar	TAP
10 Mar - 15 Mar	TAP
31 Mar - 07 Apr	Air Canada
16 Mar - 23 Mar	Lufthansa
18 Mar - 25 Mar	Icelandair
03 Mar - 16 Mar	LEVEL	direct
25 Mar - 05 Apr	TAP
31 Mar - 07 Apr	LEVEL	direct
20 Mar - 03 Apr	Scandinavian Airlines
27 Mar - 03 Apr	Scandinavian Airlines
29 Mar - 03 Apr	LEVEL	direct
30 Mar - 06 Apr	LEVEL	direct

Also check the deals for one-way flights from Boston to Barcelona 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 Boston to Barcelona in March from 333€

Return flights