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

Return flights

01 Dec - 06 Dec	WestJet
02 Dec - 24 Dec	Korean Air
02 Dec - 11 Dec	Korean Air
03 Dec - 24 Dec	Korean Air
02 Dec - 23 Dec	China Airlines
02 Dec - 18 Dec	China Airlines
08 Dec - 22 Dec	Cathay Pacific
03 Dec - 21 Dec	Korean Air
03 Dec - 14 Dec	Korean Air
28 Dec - 28 Jan	EVA Air
03 Dec - 30 Dec	China Airlines
24 Dec - 18 Jan	EVA Air
24 Dec - 12 Jan	EVA Air
23 Dec - 19 Jan	Korean Air
16 Dec - 13 Jan	Air Canada
23 Dec - 16 Jan	Air Canada
26 Dec - 12 Jan	Air Canada
24 Dec - 06 Jan	Air Canada
15 Dec - 06 Jan	Air Canada
15 Dec - 04 Jan	Philippine Airlines

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

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 December from $884

Return flights