Cheapest return flights from Boston to Barcelona in December from $328

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

Return flights

06 Dec - 13 Dec Iberia For Level direct
30 Dec - 24 Jan Iberia For Level direct
03 Dec - 10 Dec Air Canada
01 Dec - 08 Dec Air Canada
29 Dec - 24 Jan Iberia direct
09 Dec - 16 Dec Aer Lingus
28 Dec - 17 Jan Iberia For Level direct
07 Dec - 18 Dec TAP
02 Dec - 10 Jan Iberia For Level direct
11 Dec - 18 Jan Iberia For Level direct
30 Dec - 10 Jan Iberia For Level direct
28 Dec - 09 Jan Icelandair
28 Dec - 11 Jan Icelandair
12 Dec - 19 Dec Icelandair
29 Dec - 10 Jan Iberia direct
06 Dec - 27 Dec Iberia For Level direct
01 Dec - 08 Dec Iberia For Level direct
01 Dec - 27 Dec Iberia For Level direct
25 Dec - 17 Jan Iberia For Level direct
15 Dec - 23 Dec Iberia For Level direct

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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