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

Return flights

01 Dec - 10 Dec	Air Canada
03 Dec - 11 Dec	Air Canada
14 Dec - 12 Jan	Air Canada
16 Dec - 25 Dec	American Airlines
14 Dec - 28 Dec	Air Canada
14 Dec - 05 Jan	Air Canada
16 Dec - 13 Jan	Iberia
17 Dec - 31 Dec	American Airlines
17 Dec - 07 Jan	Air Canada
18 Dec - 06 Jan	Air Canada
19 Dec - 10 Jan	British Airways
20 Dec - 10 Jan	Air Canada
19 Dec - 02 Jan	Aer Lingus

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

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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Cheapest return flights from Boston to Prague in December from $364

Return flights