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

Return flights

09 Dec - 23 Dec	Lufthansa
08 Dec - 22 Jan	Lufthansa
04 Dec - 11 Dec	Austrian Airlines
28 Dec - 17 Jan	Austrian Airlines
15 Dec - 10 Jan	Air Canada
12 Dec - 19 Dec	Austrian Airlines
03 Dec - 10 Dec	LOT	direct
04 Dec - 11 Dec	LOT	direct
15 Dec - 06 Jan	Air Canada
12 Dec - 06 Jan	Austrian Airlines
25 Dec - 16 Jan	Scandinavian Airlines
06 Dec - 20 Dec	Air Canada
26 Dec - 17 Jan	Scandinavian Airlines
24 Dec - 13 Jan	Scandinavian Airlines
09 Dec - 23 Dec	LOT	direct
27 Dec - 06 Jan	SWISS
28 Dec - 06 Jan	United
22 Dec - 30 Dec	TAP
11 Dec - 18 Dec	LOT	direct
21 Dec - 31 Dec	TAP

Also check the deals for one-way flights from Newark 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 Newark to Warsaw in December from $373

Return flights