Cheapest return flights from Boston to Barcelona in December from $382

Best time to book flights for Boston (BOS) to Barcelona (BCN) flights at AirHint

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

Return flights

08 Dec - 15 Dec Iberia direct
07 Dec - 15 Dec Iberia direct
05 Dec - 12 Dec Icelandair
27 Dec - 06 Jan Air Canada
24 Dec - 31 Dec Air Canada
23 Dec - 05 Jan Air Canada
20 Dec - 12 Jan Fly Play
27 Dec - 01 Jan Fly Play
26 Dec - 05 Jan British Airways
28 Dec - 02 Jan Icelandair
27 Dec - 06 Jan Iberia direct
28 Dec - 01 Jan TAP
25 Dec - 04 Jan Iberia
25 Dec - 01 Jan Azores Airlines
15 Dec - 22 Dec United

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

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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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