AirHint found the following cheapest return flights from Calgary (YYC) to Bangkok (BKK) in August 2025 (see full year).

Return flights

19 Aug - 18 Sep	WestJet
06 Aug - 11 Sep	WestJet
22 Aug - 29 Aug	China Airlines
20 Aug - 06 Sep	Philippine Airlines
11 Aug - 25 Aug	WestJet
15 Aug - 31 Aug	WestJet
07 Aug - 10 Sep	Air Canada
05 Aug - 04 Sep	Air Canada
05 Aug - 02 Sep	WestJet
09 Aug - 16 Aug	Alaska Airlines
05 Aug - 03 Sep	Air Canada
07 Aug - 12 Aug	WestJet

Also check the deals for one-way flights from Calgary to Bangkok 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.

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Cheapest return flights from Calgary to Bangkok in August from $735

Return flights