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

Return flights

23 Jan - 31 Jan	TAP
31 Jan - 08 Feb	TAP
25 Jan - 31 Jan	LEVEL	direct
22 Jan - 31 Jan	LEVEL	direct
22 Jan - 29 Jan	LEVEL	direct
25 Jan - 03 Feb	LEVEL	direct
17 Jan - 25 Jan	LEVEL	direct
09 Jan - 16 Jan	Icelandair
21 Jan - 25 Jan	Icelandair
23 Jan - 30 Jan	Icelandair
25 Jan - 01 Feb	Icelandair
29 Jan - 31 Jan	LEVEL	direct
24 Jan - 31 Jan	LEVEL	direct
25 Jan - 02 Feb	LEVEL	direct
19 Jan - 02 Feb	LEVEL	direct
20 Jan - 03 Feb	TAP
22 Jan - 01 Feb	TAP
31 Jan - 03 Feb	Iberia	direct
26 Jan - 02 Feb	Iberia
30 Jan - 02 Feb	Iberia

Also check the deals for one-way flights from Boston to Barcelona 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 Boston to Barcelona in January from 301€

Return flights