AirHint found the following cheapest return flights from Ontario (ONT) to Ho Chi Minh City (SGN) in May 2026 (see full year).

Return flights

13 May - 27 May	China Airlines
12 May - 26 May	China Airlines
08 May - 05 Jun	China Airlines
05 May - 12 May	China Airlines
06 May - 12 May	China Airlines
18 May - 01 Jun	Korean Air
19 May - 31 May	China Airlines
21 May - 11 Jun	China Airlines
19 May - 02 Jun	Korean Air
20 May - 02 Jun	China Airlines
21 May - 01 Jun	China Airlines
31 May - 28 Jun	Korean Air
28 May - 29 Jun	China Airlines
24 May - 28 Jun	China Airlines
29 May - 10 Jun	China Airlines

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

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 May from $690

Return flights