Cheapest return flights from Ontario to Hanoi in May from $640

AirHint found the following cheapest return flights from Ontario (ONT) to Hanoi (HAN) in May 2026 (see full year).

Return flights

05 May - 27 May Korean Air
03 May - 28 May Korean Air
10 May - 15 May China Airlines
14 May - 25 May China Airlines
29 May - 17 Jun Korean Air
27 May - 03 Jun Korean Air
28 May - 04 Jun Korean Air
24 May - 07 Jun China Airlines
30 May - 20 Jun China Airlines
31 May - 20 Jun China Airlines

Also check the deals for one-way flights from Ontario to Hanoi in May.

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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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