Cheapest one-way flights from Seoul to Hanoi in September from $93

Best time to book flights for Seoul (ICN) to Hanoi (HAN) flights at AirHint

AirHint found the following cheapest one-way flights from Seoul (ICN) to Hanoi (HAN) in September 2025 (see full year).

One-Way flights

10 Sep VietJet Air direct
08 Sep Vietnam Airlines direct
30 Sep Vietnam Airlines direct
27 Sep Vietnam Airlines direct
25 Sep Vietnam Airlines direct
28 Sep Vietnam Airlines direct
05 Sep Scoot Tigerair
18 Sep Scoot Tigerair
11 Sep Scoot Tigerair
22 Sep AirAsia X

Also check the deals for return flights from Seoul to Hanoi in September.

Skyscanner

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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