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

Return flights

01 Apr - 03 Apr	China Airlines
23 Apr - 27 Apr	China Airlines
01 Apr - 08 Apr	STARLUX Airlines
13 Apr - 20 Apr	STARLUX Airlines
13 Apr - 22 Apr	STARLUX Airlines
06 Apr - 06 May	STARLUX Airlines
03 Apr - 12 Apr	China Airlines
21 Apr - 30 Apr	China Airlines
11 Apr - 30 Apr	China Airlines
11 Apr - 18 Apr	China Airlines
16 Apr - 26 Apr	China Airlines

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

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 April from 726€

Return flights