AirHint found the following cheapest one-way flights from Ontario (ONT) to Hanoi (HAN) in December 2025 (see full year).
One-Way flights
| 30 Dec | Frontier Airlines | ||
| 09 Dec | Korean Air | ||
| 26 Dec | China Airlines | ||
| 24 Dec | Frontier Airlines | ||
| 10 Dec | China Airlines | ||
| 13 Dec | STARLUX Airlines | ||
| 20 Dec | Alaska Airlines | ||
| 19 Dec | Korean Air |
Also check the deals for return flights from Ontario to Hanoi in December.
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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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