AirHint found the following cheapest one-way flights from Seoul (ICN) to Vientiane (VTE) in August 2025 (see full year).

One-Way flights

31 Aug	VietJet Air
24 Aug	Jeju Air	direct
25 Aug	Jeju Air	direct
26 Aug	Jeju Air	direct
30 Aug	China Southern
21 Aug	VietJet Air
18 Aug	VietJet Air
22 Aug	VietJet Air
19 Aug	VietJet Air
23 Aug	VietJet Air

Also check the deals for return 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 one-way flights from Seoul to Vientiane in August from 86€

One-Way flights