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

Return flights

01 Jul - 04 Jul	Jeju Air
10 Jul - 14 Jul	Jeju Air
01 Jul - 05 Jul	Jeju Air
10 Jul - 12 Jul	Jeju Air
29 Jul - 04 Aug	Jeju Air
30 Jul - 03 Aug	Jeju Air
28 Jul - 03 Aug	Jeju Air
28 Jul - 31 Jul	Jeju Air
26 Jul - 29 Jul	Jeju Air
26 Jul - 06 Aug	Jeju Air
24 Jul - 27 Jul	Jeju Air
24 Jul - 28 Jul	Jeju Air
25 Jul - 28 Jul	Jeju Air
26 Jul - 31 Jul	Jeju Air
30 Jul - 02 Aug	Jeju Air
26 Jul - 02 Aug	Jeju Air
30 Jul - 06 Aug	Jeju Air
31 Jul - 03 Aug	Jeju Air
31 Jul - 04 Aug	Jeju Air
25 Jul - 01 Aug	Jeju Air

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

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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Cheapest return flights from Seoul to Hanoi in July from 274€

Return flights