AirHint found the following cheapest return flights from Ontario (ONT) to Bangkok (BKK) in July 2025 (see full year).

Return flights

28 Jul - 21 Aug	STARLUX Airlines
30 Jul - 25 Aug	STARLUX Airlines
28 Jul - 28 Aug	China Airlines
22 Jul - 20 Aug	China Airlines
31 Jul - 20 Aug	China Airlines
24 Jul - 25 Aug	China Airlines
24 Jul - 20 Aug	China Airlines
30 Jul - 06 Aug	STARLUX Airlines
31 Jul - 03 Aug	China Airlines
29 Jul - 05 Aug	China Airlines
24 Jul - 31 Jul	China Airlines
25 Jul - 28 Jul	China Airlines
26 Jul - 30 Jul	China Airlines
25 Jul - 27 Jul	China Airlines
24 Jul - 26 Jul	China Airlines
22 Jul - 26 Jul	China Airlines
23 Jul - 25 Jul	China Airlines

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

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 July from 837€

Return flights