Cheapest return flights from Ontario to Bangkok in September from $580

AirHint found the following cheapest return flights from Ontario (ONT) to Bangkok (BKK) in September 2026 (see full year).

Return flights

01 Sep - 12 Sep Korean Air
04 Sep - 27 Sep Korean Air
04 Sep - 22 Sep Korean Air
05 Sep - 20 Sep Korean Air
05 Sep - 24 Sep Korean Air
01 Sep - 08 Sep Korean Air
22 Sep - 29 Sep Korean Air
03 Sep - 13 Sep China Airlines
04 Sep - 12 Sep China Airlines
01 Sep - 11 Sep China Airlines
28 Sep - 11 Oct China 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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