AirHint found the following cheapest return flights from Ontario (ONT) to Ho Chi Minh City (SGN) in October 2025 (see full year).

Return flights

23 Oct - 06 Nov	Korean Air
16 Oct - 23 Oct	Korean Air
29 Oct - 09 Nov	Korean Air
28 Oct - 27 Nov	Korean Air
22 Oct - 13 Nov	Korean Air
06 Oct - 26 Oct	Korean Air
20 Oct - 30 Oct	Korean Air
09 Oct - 16 Oct	Korean Air
08 Oct - 15 Oct	Korean Air
12 Oct - 23 Oct	Korean Air
08 Oct - 26 Oct	Korean Air
07 Oct - 11 Nov	Korean Air
15 Oct - 02 Nov	Korean Air
16 Oct - 25 Nov	Korean Air
07 Oct - 03 Nov	Korean Air
30 Oct - 27 Nov	Korean Air
01 Oct - 11 Oct	China Airlines
19 Oct - 31 Oct	China Airlines
03 Oct - 18 Oct	China Airlines
31 Oct - 14 Nov	China Airlines

Also check the deals for one-way flights from Ontario to Ho Chi Minh City in October.

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 Ho Chi Minh City in October from $690

Return flights