AirHint found the following cheapest one-way flights from Seoul (GMP) to Hanoi (HAN) in August 2025 (see full year).
One-Way flights
| 18 Aug | Eastar Jet | ||
| 20 Aug | Eastar Jet | ||
| 25 Aug | Jeju Air | ||
| 22 Aug | T'way Air | ||
| 27 Aug | Jin Air | ||
| 16 Aug | Jeju Air | ||
| 24 Aug | Air Busan | ||
| 17 Aug | Korean Air | ||
| 30 Aug | Air Busan | ||
| 29 Aug | EVA Air |
Also check the deals for return flights from Seoul to Hanoi in August.
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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