Cheapest return flights from Frankfurt to San Francisco in September from $571

Best time to book flights for Frankfurt (FRA) to San Francisco (SFO) flights at AirHint

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

Return flights

09 Sep - 17 Sep Finnair
23 Sep - 30 Sep Finnair
23 Sep - 07 Oct Finnair
16 Sep - 01 Oct Finnair
15 Sep - 28 Sep British Airways
15 Sep - 22 Sep British Airways
15 Sep - 06 Oct British Airways
30 Sep - 21 Oct British Airways
22 Sep - 13 Oct British Airways
25 Sep - 15 Oct Delta
22 Sep - 19 Oct Delta
26 Sep - 09 Oct Delta
05 Sep - 23 Sep British Airways
01 Sep - 10 Sep Finnair
01 Sep - 22 Sep Finnair
26 Sep - 11 Oct British Airways
26 Sep - 03 Oct British Airways
12 Sep - 19 Sep British Airways
14 Sep - 28 Sep British Airways
06 Sep - 23 Sep British Airways

Also check the deals for one-way flights from Frankfurt to San Francisco 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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