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

Return flights

08 Aug - 23 Aug	STARLUX Airlines
15 Aug - 30 Aug	STARLUX Airlines
12 Aug - 03 Sep	China Airlines
17 Aug - 24 Aug	Alaska Airlines
31 Aug - 07 Sep	China Airlines
14 Aug - 02 Sep	China Airlines
16 Aug - 31 Aug	China Airlines
12 Aug - 29 Aug	China Airlines
26 Aug - 22 Sep	China Airlines
10 Aug - 13 Aug	Alaska Airlines
10 Aug - 17 Aug	Alaska Airlines
04 Aug - 17 Aug	Alaska Airlines
03 Aug - 08 Aug	China Airlines
03 Aug - 10 Aug	China Airlines

Also check the deals for one-way flights from Ontario 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.

Book a cheap hotel in Jakarta

Cheap car rent in Jakarta

Cheapest return flights from Ontario to Jakarta in August from $907

Return flights