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

Return flights

11 Dec - 16 Dec	Air Canada
01 Dec - 31 Dec	Delta
16 Dec - 31 Dec	Delta
01 Dec - 09 Dec	Scandinavian Airlines
24 Dec - 02 Jan	Air Canada
22 Dec - 29 Dec	Scandinavian Airlines
11 Dec - 02 Jan	Air Canada
24 Dec - 01 Jan	Air Canada
13 Dec - 27 Dec	Scandinavian Airlines
09 Dec - 23 Dec	TAP
24 Dec - 26 Dec	Scandinavian Airlines
06 Dec - 27 Dec	Air Canada
26 Dec - 02 Jan	Air Canada
15 Dec - 08 Jan	TAP
26 Dec - 01 Jan	Air Canada
16 Dec - 10 Jan	TAP
20 Dec - 27 Dec	Scandinavian Airlines

Also check the deals for one-way flights from Washington 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 Washington to Prague in December from $721

Return flights