Cheapest one-way flights from Boston to Barcelona in December from 172€

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

One-Way flights

30 Dec Iberia For Level direct
08 Dec Iberia For Level direct
10 Dec Spirit Airlines
16 Dec Iberia direct
13 Dec Iberia For Level direct
24 Dec British Airways
20 Dec British Airways
19 Dec British Airways
22 Dec Brussels Airlines
21 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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