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

Return flights

04 Aug - 20 Aug	Lufthansa
18 Aug - 25 Aug	United
21 Aug - 25 Aug	Lufthansa
26 Aug - 02 Sep	United
16 Aug - 23 Aug	United
20 Aug - 27 Aug	United
24 Aug - 31 Aug	United
20 Aug - 30 Aug	Lufthansa
22 Aug - 29 Aug	United
20 Aug - 31 Aug	Lufthansa
28 Aug - 04 Sep	United
30 Aug - 06 Sep	United

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

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 San Francisco to Warsaw in August from 450€

Return flights