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

Return flights

01 Sep - 17 Sep	Condor
14 Sep - 29 Sep	Condor
01 Sep - 07 Sep	Condor
01 Sep - 15 Sep	Condor
01 Sep - 13 Sep	Condor
29 Sep - 13 Oct	Scandinavian Airlines
14 Sep - 28 Sep	Condor
27 Sep - 11 Oct	Condor
04 Sep - 18 Sep	Scandinavian Airlines

Also check the deals for one-way flights from San Jose to Frankfurt 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 San Jose to Frankfurt in September from $655

Return flights