AirHint found the following cheapest return flights from Seoul (ICN) to Vientiane (VTE) in August 2026 (see full year).

Return flights

18 Aug - 20 Aug	Jeju Air	direct
17 Aug - 24 Aug	Vietnam Airlines
15 Aug - 22 Aug	Vietnam Airlines
17 Aug - 24 Aug	Jeju Air	direct
15 Aug - 22 Aug	Jeju Air	direct
14 Aug - 16 Aug	Vietnam Airlines
13 Aug - 19 Aug	Vietnam Airlines
13 Aug - 19 Aug	Jeju Air	direct
14 Aug - 16 Aug	Jeju Air	direct

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

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 Vientiane in August from 233€

Return flights