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

Return flights

01 Apr - 08 Apr	China Airlines
30 Apr - 28 May	China Airlines
14 Apr - 21 Apr	China Airlines
20 Apr - 18 May	China Airlines
03 Apr - 26 Apr	China Airlines
05 Apr - 22 Apr	China Airlines
18 Apr - 26 Apr	China Airlines
03 Apr - 08 Apr	China Airlines
11 Apr - 22 Apr	China Airlines
17 Apr - 01 May	China Airlines
10 Apr - 19 Apr	China Airlines
18 Apr - 30 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 $873

Return flights