Cheapest return flights from Seoul to Hanoi in September from $123

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

Return flights

25 Sep - 30 Sep VietJet Air direct
20 Sep - 27 Sep VietJet Air direct
22 Sep - 25 Sep VietJet Air direct
01 Sep - 10 Sep VietJet Air direct
05 Sep - 14 Sep VietJet Air direct
16 Sep - 23 Sep VietJet Air direct
07 Sep - 13 Sep VietJet Air direct
05 Sep - 07 Sep VietJet Air direct
10 Sep - 13 Sep VietJet Air direct
24 Sep - 26 Sep VietJet Air direct
28 Sep - 02 Oct Jeju Air direct
28 Sep - 03 Oct Jeju Air direct
28 Sep - 04 Oct Jeju Air direct
24 Sep - 03 Oct Jeju Air direct
21 Sep - 04 Oct Vietnam Airlines direct
16 Sep - 01 Oct Vietnam Airlines direct
17 Sep - 01 Oct Vietnam Airlines direct
17 Sep - 02 Oct Vietnam Airlines direct
18 Sep - 01 Oct Vietnam Airlines direct
18 Sep - 02 Oct Vietnam Airlines direct

Also check the deals for one-way 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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