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

Return flights

03 Sep - 10 Sep	China Airlines
14 Sep - 21 Sep	China Airlines
01 Sep - 15 Sep	Alaska Airlines
22 Sep - 30 Sep	Qatar Airways
24 Sep - 02 Oct	Qatar Airways
09 Sep - 10 Oct	Qatar Airways
23 Sep - 03 Oct	Qatar Airways
03 Sep - 20 Sep	Qatar Airways
11 Sep - 07 Oct	Qatar Airways
04 Sep - 20 Sep	Qatar Airways
16 Sep - 09 Oct	Etihad Airways
17 Sep - 21 Sep	Qatar Airways
06 Sep - 20 Sep	Qatar Airways
11 Sep - 21 Sep	Qatar Airways
13 Sep - 28 Sep	Qatar Airways
24 Sep - 04 Oct	Etihad Airways
10 Sep - 14 Oct	Qatar Airways
10 Sep - 09 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 872€

Return flights