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

Return flights

01 Dec - 10 Dec	Delta
08 Dec - 24 Dec	Delta
08 Dec - 15 Dec	Scandinavian Airlines
13 Dec - 15 Jan	Finnair
13 Dec - 14 Jan	Finnair
04 Dec - 27 Dec	Air Canada
05 Dec - 27 Dec	Air Canada
07 Dec - 27 Dec	Air Canada
24 Dec - 07 Jan	Air Canada
11 Dec - 18 Dec	British Airways
16 Dec - 10 Jan	Air Canada
15 Dec - 10 Jan	Air Canada
12 Dec - 10 Jan	Air Canada
13 Dec - 20 Dec	Finnair
14 Dec - 21 Jan	TAP
14 Dec - 14 Jan	TAP
14 Dec - 15 Jan	TAP
15 Dec - 01 Jan	Delta
13 Dec - 28 Dec	jetBlue
13 Dec - 27 Dec	Delta

Also check the deals for one-way flights from Washington to Warsaw 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 Warsaw in December from $498

Return flights