AirHint found the following cheapest return flights from Barcelona (BCN) to Boston (BOS) in December 2025 (see full year).

Return flights

25 Dec - 17 Jan	TAP
26 Dec - 09 Jan	TAP
25 Dec - 17 Jan	LEVEL	direct
25 Dec - 30 Dec	LEVEL	direct
26 Dec - 31 Dec	TAP
26 Dec - 02 Jan	TAP
24 Dec - 31 Dec	TAP
26 Dec - 30 Dec	TAP
26 Dec - 07 Jan	TAP
25 Dec - 01 Jan	TAP
23 Dec - 01 Jan	TAP
29 Dec - 08 Jan	Lufthansa
25 Dec - 05 Jan	TAP
26 Dec - 05 Jan	TAP
27 Dec - 30 Dec	Iberia	direct
25 Dec - 28 Dec	TAP
23 Dec - 28 Dec	TAP
25 Dec - 29 Dec	TAP
25 Dec - 28 Dec	LEVEL	direct
25 Dec - 29 Dec	LEVEL	direct

Also check the deals for one-way flights from Barcelona to Boston in December.

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 December from 445€

Return flights