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

Return flights

11 Dec - 08 Jan	LEVEL	direct
11 Dec - 15 Dec	Iberia
11 Dec - 16 Dec	Iberia
18 Dec - 06 Jan	Ryanair
05 Dec - 08 Dec	TAP
08 Dec - 21 Jan	Iberia
25 Dec - 29 Dec	LEVEL	direct
22 Dec - 15 Jan	Iberia	direct
06 Dec - 14 Dec	ITA Airways
10 Dec - 15 Dec	British Airways
04 Dec - 08 Dec	British Airways
12 Dec - 14 Dec	ITA Airways
04 Dec - 09 Dec	TAP
25 Dec - 30 Dec	LEVEL	direct
18 Dec - 08 Jan	Ryanair
18 Dec - 11 Jan	Ryanair
26 Dec - 11 Jan	Azores Airlines
16 Dec - 08 Jan	Ryanair
28 Dec - 01 Jan	LEVEL	direct
10 Dec - 07 Jan	easyJet

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 401€

Return flights