Cheapest return flights from Seoul to Hanoi in September from $498

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

Return flights

17 Sep - 20 Sep Air China
17 Sep - 21 Sep Air China
15 Sep - 21 Sep Air China
16 Sep - 22 Sep Air China
03 Sep - 17 Sep Air China
29 Sep - 05 Oct Air China
07 Sep - 11 Sep Air China
04 Sep - 12 Sep Air China
18 Sep - 24 Sep Air China
01 Sep - 05 Sep Air China
25 Sep - 02 Oct EVA Air
18 Sep - 25 Sep EVA Air
27 Sep - 06 Oct Air China

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

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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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