Cheapest return flights from Ontario to Bangkok in September from $757

Best time to book flights for Ontario (ONT) to Bangkok (BKK) flights at AirHint

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

Return flights

25 Sep - 06 Oct Korean Air
08 Sep - 18 Sep Korean Air
11 Sep - 18 Sep Korean Air
09 Sep - 18 Sep Korean Air
10 Sep - 18 Sep Korean Air
11 Sep - 21 Sep Korean Air
01 Sep - 15 Sep Korean Air
01 Sep - 20 Oct Korean Air
08 Sep - 22 Sep Korean Air
08 Sep - 23 Sep Korean Air
09 Sep - 20 Sep Korean Air
16 Sep - 29 Sep China Airlines
30 Sep - 28 Oct China Airlines
24 Sep - 05 Oct China Airlines
26 Sep - 11 Oct Korean Air
25 Sep - 02 Oct China Airlines
25 Sep - 16 Oct China Airlines
22 Sep - 08 Oct China Airlines
27 Sep - 10 Oct China Airlines
27 Sep - 19 Oct China Airlines

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

Skyscanner

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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