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

Return flights

23 Jan - 30 Jan	TAP
29 Jan - 06 Feb	TAP
29 Jan - 05 Feb	TAP
28 Jan - 02 Feb	Iberia
29 Jan - 05 Feb	LEVEL	direct
29 Jan - 02 Feb	LEVEL	direct
27 Jan - 03 Feb	Iberia	direct
22 Jan - 26 Jan	TAP
28 Jan - 04 Feb	Iberia
31 Jan - 07 Feb	LEVEL	direct
20 Jan - 16 Feb	TAP
25 Jan - 29 Jan	LEVEL	direct
23 Jan - 26 Jan	TAP
25 Jan - 01 Feb	Lufthansa
24 Jan - 31 Jan	TAP
23 Jan - 29 Jan	TAP
24 Jan - 31 Jan	LEVEL	direct
22 Jan - 29 Jan	LEVEL	direct
24 Jan - 27 Jan	LEVEL	direct
26 Jan - 29 Jan	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 $390

Return flights