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

Return flights

14 Jan - 28 Jan	TAP
17 Jan - 26 Jan	TAP
15 Jan - 26 Jan	Iberia For Level	direct
11 Jan - 25 Jan	Iberia For Level	direct
22 Jan - 29 Jan	Iberia For Level	direct
15 Jan - 24 Jan	Iberia For Level	direct
17 Jan - 26 Jan	Iberia For Level	direct
25 Jan - 02 Feb	Iberia For Level	direct

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 314€

Return flights