Cheapest return flights from San Francisco to Warsaw in September from $541

AirHint found the following cheapest return flights from San Francisco (SFO) to Warsaw (WAW) in September 2025 (see full year).

Return flights

30 Sep - 22 Oct Lufthansa
16 Sep - 24 Sep Lufthansa
09 Sep - 16 Sep SWISS
16 Sep - 23 Sep SWISS
30 Sep - 07 Oct Lufthansa
17 Sep - 28 Oct British Airways
15 Sep - 22 Sep SWISS
25 Sep - 02 Oct Lufthansa
29 Sep - 06 Oct Lufthansa
14 Sep - 21 Sep Lufthansa
24 Sep - 01 Oct Lufthansa
10 Sep - 17 Sep Lufthansa
26 Sep - 18 Oct Hawaiian Airlines
08 Sep - 15 Sep SWISS
18 Sep - 25 Sep SWISS
22 Sep - 29 Sep SWISS
13 Sep - 20 Sep SWISS
27 Sep - 04 Oct SWISS
28 Sep - 05 Oct Lufthansa

Also check the deals for one-way flights from San Francisco to Warsaw in September.

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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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