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

Return flights

08 Sep - 19 Sep	China Airlines
30 Sep - 07 Oct	China Airlines
01 Sep - 05 Sep	China Airlines
21 Sep - 27 Sep	China Airlines
04 Sep - 18 Sep	China Airlines
27 Sep - 09 Oct	China Airlines
22 Sep - 01 Oct	China Airlines
19 Sep - 23 Sep	China Airlines
06 Sep - 16 Sep	Etihad Airways
29 Sep - 09 Oct	Etihad Airways
26 Sep - 06 Oct	Etihad Airways
27 Sep - 07 Oct	Etihad Airways
21 Sep - 01 Oct	Qatar Airways
13 Sep - 23 Sep	Etihad Airways
08 Sep - 18 Sep	Etihad Airways
10 Sep - 24 Sep	Etihad Airways
15 Sep - 09 Oct	China Airlines
28 Sep - 08 Oct	Qatar Airways
15 Sep - 25 Sep	Etihad Airways
22 Sep - 02 Oct	Qatar Airways

Also check the deals for one-way flights from Ontario to Denpasar 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 Denpasar in September from $1024

Return flights