Cheapest return flights from Boston to Barcelona in December from 296€

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

Return flights

10 Dec - 17 Dec United
16 Dec - 19 Jan Iberia For Level direct
14 Dec - 20 Dec Iberia For Level direct
17 Dec - 20 Jan Aer Lingus
20 Dec - 29 Dec Iberia For Level direct
27 Dec - 03 Jan Iberia For Level direct
27 Dec - 04 Jan Iberia For Level direct
28 Dec - 04 Jan Iberia For Level direct
13 Dec - 04 Jan Iberia For Level direct
25 Dec - 04 Jan Iberia For Level direct
12 Dec - 28 Dec Finnair
26 Dec - 31 Dec Aer Lingus
25 Dec - 01 Jan Aer Lingus
23 Dec - 03 Jan Iberia For Level direct
27 Dec - 01 Jan Iberia For Level direct
20 Dec - 27 Dec TAP

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

Skyscanner

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Feel free to contact us with any feedback or request another flight research.