Cheapest return flights from Boston to Barcelona in December from $500

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

06 Dec - 04 Jan Fly Play
06 Dec - 04 Jan Iberia direct
20 Dec - 04 Jan Fly Play
26 Dec - 02 Jan Icelandair
20 Dec - 03 Jan Fly Play
28 Dec - 04 Jan Icelandair
23 Dec - 04 Jan Fly Play
18 Dec - 25 Dec TAP
19 Dec - 03 Jan Fly Play
27 Dec - 03 Jan Air Canada
22 Dec - 04 Jan Iberia direct

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.

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