Cheapest return flights from Boston to Barcelona in December from $326

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 TAP
07 Dec - 14 Dec TAP
03 Dec - 11 Dec TAP
01 Dec - 08 Dec TAP
11 Dec - 14 Dec TAP
04 Dec - 07 Dec TAP
05 Dec - 12 Dec Icelandair
04 Dec - 11 Dec TAP
09 Dec - 16 Dec TAP
11 Dec - 15 Dec TAP
30 Dec - 24 Jan LEVEL direct
10 Dec - 17 Jan Aer Lingus
29 Dec - 24 Jan Iberia
29 Dec - 24 Jan LEVEL direct
31 Dec - 05 Jan TAP
29 Dec - 07 Jan TAP
26 Dec - 10 Jan British Airways
26 Dec - 02 Jan TAP
27 Dec - 03 Jan TAP
29 Dec - 10 Jan Aer Lingus

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

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