Cheapest return flights from Seoul to Hanoi in August from $431

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

Return flights

22 Aug - 25 Aug Jeju Air
18 Aug - 25 Aug Jeju Air
02 Aug - 06 Aug Jeju Air
03 Aug - 06 Aug Jeju Air
01 Aug - 06 Aug Jeju Air
29 Aug - 05 Sep Jeju Air
24 Aug - 27 Aug Jeju Air
29 Aug - 02 Sep Jeju Air
28 Aug - 01 Sep Jeju Air
01 Aug - 05 Aug Jeju Air
02 Aug - 05 Aug Jeju Air
03 Aug - 05 Aug Jeju Air
03 Aug - 07 Aug Jeju Air
28 Aug - 06 Sep Jeju Air

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

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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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