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

Return flights

31 Jan - 07 Feb	LEVEL	direct
29 Jan - 03 Feb	LEVEL	direct
15 Jan - 03 Feb	LEVEL	direct
30 Jan - 03 Feb	Iberia
31 Jan - 03 Feb	Iberia	direct
29 Jan - 31 Jan	TAP
17 Jan - 31 Jan	TAP
27 Jan - 31 Jan	TAP
22 Jan - 25 Jan	Iberia
20 Jan - 31 Jan	KLM
25 Jan - 16 Feb	KLM
24 Jan - 02 Feb	KLM
22 Jan - 02 Feb	KLM
15 Jan - 09 Feb	LEVEL	direct
22 Jan - 31 Jan	Delta
21 Jan - 28 Jan	Iberia
28 Jan - 04 Feb	Iberia
18 Jan - 25 Jan	British Airways
16 Jan - 23 Jan	TAP
24 Jan - 29 Jan	Aer Lingus

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

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 January from 327€

Return flights