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

Return flights

17 Sep - 30 Sep	Porter Airlines (Canada) Ltd
18 Sep - 15 Oct	WestJet
18 Sep - 25 Sep	WestJet
30 Sep - 04 Oct	WestJet
15 Sep - 01 Oct	WestJet
18 Sep - 01 Oct	WestJet
15 Sep - 19 Sep	WestJet
17 Sep - 19 Sep	WestJet
20 Sep - 04 Oct	WestJet
21 Sep - 28 Sep	WestJet
17 Sep - 24 Sep	WestJet
27 Sep - 11 Oct	WestJet
26 Sep - 10 Oct	WestJet
30 Sep - 18 Oct	WestJet
20 Sep - 27 Sep	WestJet
15 Sep - 22 Sep	WestJet
26 Sep - 29 Sep	WestJet
19 Sep - 26 Sep	WestJet
24 Sep - 08 Oct	WestJet

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

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 Hamilton to Bangkok in September from 863€

Return flights