AirHint found the following cheapest return flights from Ontario (ONT) to Frankfurt (FRA) in September 2026 (see full year).
Return flights
| 07 Sep - 21 Sep | British Airways | ||
| 01 Sep - 13 Sep | British Airways | ||
| 17 Sep - 01 Oct | British Airways | ||
| 27 Sep - 11 Oct | British Airways | ||
| 04 Sep - 13 Sep | British Airways |
Also check the deals for one-way flights from Ontario to Frankfurt in September.
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