AirHint found the following cheapest return flights from Montreal (YUL) to Jakarta (CGK) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep	ANA
03 Sep - 24 Sep	ANA
16 Sep - 24 Sep	ANA
09 Sep - 16 Sep	ANA
08 Sep - 15 Sep	ANA
17 Sep - 24 Sep	ANA
03 Sep - 10 Sep	ANA
02 Sep - 09 Sep	ANA
15 Sep - 22 Sep	ANA
04 Sep - 11 Sep	ANA
29 Sep - 06 Oct	WestJet
01 Sep - 20 Oct	Qatar Airways
24 Sep - 01 Oct	Japan Airlines
25 Sep - 02 Oct	Japan Airlines
28 Sep - 05 Oct	Air France
27 Sep - 04 Oct	Japan Airlines
26 Sep - 03 Oct	EVA Air

Also check the deals for one-way flights from Montreal to Jakarta 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 Montreal to Jakarta in September from $768

Return flights