Cheapest return flights from Seoul to Hanoi in September from $211

AirHint found the following cheapest return flights from Seoul (ICN) to Hanoi (HAN) in September 2026 (see full year).

Return flights

10 Sep - 14 Sep VietJet Air
14 Sep - 18 Sep Jeju Air direct
08 Sep - 11 Sep Jeju Air direct
09 Sep - 13 Sep Vietnam Airlines direct
07 Sep - 14 Sep Vietnam Airlines direct
10 Sep - 15 Sep Vietnam Airlines direct
15 Sep - 20 Sep Vietnam Airlines direct
17 Sep - 20 Sep Vietnam Airlines direct
01 Sep - 11 Sep Vietnam Airlines direct
25 Sep - 29 Sep Vietnam Airlines direct
30 Sep - 05 Oct Vietnam Airlines direct
25 Sep - 03 Oct Vietnam Airlines direct
30 Sep - 03 Oct Vietnam Airlines direct
25 Sep - 04 Oct Vietnam Airlines direct
22 Sep - 06 Oct VietJet Air direct
24 Sep - 03 Oct China Southern
23 Sep - 02 Oct HK Express
24 Sep - 03 Oct Vietnam Airlines direct
23 Sep - 02 Oct Vietnam Airlines direct

Also check the deals for one-way flights from Seoul to Hanoi in September.

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