AirHint found the following cheapest return flights from Ontario (ONT) to Amsterdam (AMS) in September 2026 (see full year).
Return flights
| 01 Sep - 26 Sep | jetBlue | ||
| 04 Sep - 19 Sep | jetBlue | ||
| 06 Sep - 26 Sep | Alaska Airlines | ||
| 03 Sep - 26 Sep | Alaska Airlines | ||
| 02 Sep - 10 Sep | Iberia |
Also check the deals for one-way flights from Ontario to Amsterdam in September.
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