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

Return flights

12 Aug - 26 Aug	Lufthansa
04 Aug - 20 Aug	SWISS
13 Aug - 20 Aug	United
19 Aug - 26 Aug	United
20 Aug - 12 Sep	SWISS
17 Aug - 24 Aug	United
27 Aug - 03 Sep	United
21 Aug - 28 Aug	United
11 Aug - 18 Aug	United
25 Aug - 01 Sep	United
07 Aug - 14 Aug	United
20 Aug - 30 Aug	United
15 Aug - 22 Aug	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 454€

Return flights