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

Return flights

19 Aug - 05 Sep	ANA
30 Aug - 06 Sep	ANA
26 Aug - 02 Sep	Japan Airlines
27 Aug - 03 Sep	Japan Airlines
23 Aug - 06 Sep	ANA
19 Aug - 26 Aug	ANA
28 Aug - 04 Sep	Japan Airlines
31 Aug - 07 Sep	ANA
06 Aug - 13 Aug	Porter Airlines (Canada) Ltd
29 Aug - 05 Sep	WestJet
05 Aug - 12 Aug	WestJet
20 Aug - 27 Aug	WestJet
04 Aug - 11 Aug	WestJet
21 Aug - 28 Aug	KLM
03 Aug - 10 Aug	China Airlines
25 Aug - 01 Sep	Emirates
07 Aug - 14 Aug	WestJet
11 Aug - 18 Aug	Porter Airlines (Canada) Ltd
14 Aug - 21 Aug	WestJet

Also check the deals for one-way flights from Montreal to Jakarta in August.

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 August from $1055

Return flights