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

Return flights

23 Jan - 09 Feb	Delta
30 Jan - 11 Feb	Korean Air
27 Jan - 11 Feb	Korean Air
27 Jan - 10 Feb	Korean Air
31 Jan - 16 Feb	Delta
19 Jan - 06 Feb	Korean Air
23 Jan - 30 Jan	China Airlines
27 Jan - 04 Feb	China Airlines
19 Jan - 27 Jan	China Airlines
24 Jan - 31 Jan	Korean Air
25 Jan - 06 Feb	China Airlines
16 Jan - 30 Jan	China Airlines
21 Jan - 29 Jan	China Airlines
23 Jan - 31 Jan	China Airlines
17 Jan - 25 Jan	China Airlines
23 Jan - 05 Feb	China Airlines
25 Jan - 08 Feb	China Airlines
22 Jan - 29 Jan	China Airlines
16 Jan - 25 Jan	China Airlines
15 Jan - 25 Jan	China Airlines

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

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 Ontario to Bangkok in January from $615

Return flights