Cheapest return flights from Ontario to Bangkok in September from $792

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

Return flights

09 Sep - 16 Sep Korean Air
09 Sep - 21 Sep Korean Air
18 Sep - 25 Sep Korean Air
18 Sep - 24 Sep Korean Air
01 Sep - 22 Sep Korean Air
08 Sep - 24 Sep Korean Air
01 Sep - 15 Sep STARLUX Airlines
15 Sep - 30 Sep STARLUX Airlines
05 Sep - 13 Sep STARLUX Airlines
20 Sep - 30 Sep STARLUX Airlines
27 Sep - 05 Oct STARLUX Airlines
26 Sep - 05 Oct STARLUX Airlines
29 Sep - 08 Oct STARLUX Airlines
24 Sep - 01 Oct STARLUX Airlines
27 Sep - 04 Oct STARLUX Airlines
01 Sep - 01 Oct STARLUX Airlines
17 Sep - 01 Oct STARLUX Airlines
27 Sep - 11 Oct STARLUX Airlines
23 Sep - 01 Oct China Airlines
24 Sep - 08 Oct STARLUX Airlines

Also check the deals for one-way flights from Ontario to Bangkok in September.

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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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