AirHint found the following cheapest return flights from Ontario (ONT) to Amsterdam (AMS) in September 2025 (see full year).

Return flights

11 Sep - 18 Sep	Iberia
14 Sep - 21 Sep	Iberia
10 Sep - 14 Sep	Iberia
19 Sep - 21 Sep	Iberia
12 Sep - 19 Sep	Iberia
09 Sep - 16 Sep	jetBlue
07 Sep - 16 Sep	jetBlue
21 Sep - 08 Oct	jetBlue
07 Sep - 15 Sep	jetBlue
20 Sep - 05 Oct	Finnair
21 Sep - 11 Oct	jetBlue
05 Sep - 27 Sep	jetBlue
21 Sep - 05 Oct	jetBlue
20 Sep - 26 Sep	jetBlue
11 Sep - 04 Oct	jetBlue
15 Sep - 04 Oct	jetBlue
25 Sep - 01 Oct	Finnair

Also check the deals for one-way flights from Ontario to Amsterdam 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 Ontario to Amsterdam in September from $590

Return flights