Cheapest return SJO–FRA flights, September

AirHint found the following cheapest return flights from San Jose (SJO) to Frankfurt (FRA) in September 2026 (see full year).

Return flights

12 Sep - 25 Sep Air Canada
01 Sep - 15 Sep Air Canada
08 Sep - 22 Sep Air Canada
30 Sep - 07 Oct Air Canada
10 Sep - 30 Sep United
05 Sep - 20 Sep United
07 Sep - 21 Sep United
24 Sep - 15 Oct KLM
10 Sep - 22 Sep Lufthansa direct
08 Sep - 22 Sep Lufthansa direct
01 Sep - 15 Sep Lufthansa direct

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

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