Cheapest one-way flights from Boston to Barcelona in December from $165

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

One-Way flights

01 Dec Iberia For Level direct
30 Dec Iberia For Level direct
06 Dec Iberia direct
04 Dec Iberia For Level direct
28 Dec Iberia For Level direct
29 Dec Iberia For Level direct
05 Dec Spirit Airlines
13 Dec Iberia For Level direct
09 Dec Spirit Airlines
11 Dec Iberia For Level direct

Also check the deals for return 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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