AirHint found the following cheapest return flights from Los Angeles (LAX) to Warsaw (WAW) in September 2025 (see full year).

Return flights

29 Sep - 27 Oct	Scandinavian Airlines
29 Sep - 21 Oct	Lufthansa
28 Sep - 09 Oct	Austrian Airlines
23 Sep - 01 Oct	Lufthansa
24 Sep - 29 Sep	Austrian Airlines
21 Sep - 16 Oct	SWISS
26 Sep - 24 Oct	Scandinavian Airlines
22 Sep - 18 Oct	SWISS
16 Sep - 29 Sep	Lufthansa
18 Sep - 25 Sep	Brussels Airlines
16 Sep - 29 Sep	LOT	direct
18 Sep - 25 Sep	LOT	direct
29 Sep - 06 Oct	Delta
18 Sep - 11 Oct	Brussels Airlines
17 Sep - 22 Sep	Air Canada
23 Sep - 01 Oct	LOT	direct
24 Sep - 29 Sep	LOT	direct
17 Sep - 22 Sep	LOT	direct

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Warsaw in September from $447

Return flights