AirHint found the following cheapest return flights from New York (LGA) to Warsaw (WAW) in September 2025 (see full year).

Return flights

09 Sep - 18 Sep	United
09 Sep - 23 Sep	United
22 Sep - 18 Oct	United
22 Sep - 04 Oct	United
08 Sep - 15 Sep	United
17 Sep - 26 Sep	Delta
09 Sep - 04 Oct	United
26 Sep - 24 Oct	Delta
09 Sep - 16 Sep	Lufthansa
16 Sep - 22 Sep	Air Canada
28 Sep - 06 Oct	Air Canada
22 Sep - 19 Oct	Delta
29 Sep - 19 Oct	Delta
21 Sep - 28 Sep	British Airways
15 Sep - 18 Sep	Air Canada
22 Sep - 26 Sep	Scandinavian Airlines
18 Sep - 24 Sep	Air Canada
08 Sep - 04 Oct	United
28 Sep - 19 Oct	Delta
11 Sep - 04 Oct	United

Also check the deals for one-way flights from New York to Warsaw in September.

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 New York to Warsaw in September from $454

Return flights