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

Return flights

31 Mar - 16 Apr	China Airlines
04 Mar - 21 Mar	STARLUX Airlines
07 Mar - 22 Mar	STARLUX Airlines
27 Mar - 12 Apr	STARLUX Airlines
09 Mar - 30 Mar	China Airlines
04 Mar - 24 Mar	China Airlines
29 Mar - 11 Apr	China Airlines
20 Mar - 03 Apr	China Airlines
07 Mar - 20 Mar	STARLUX Airlines
29 Mar - 08 Apr	China Airlines
01 Mar - 11 Mar	China Airlines
25 Mar - 11 Apr	China Airlines
25 Mar - 25 Apr	China Airlines

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

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 March from $882

Return flights