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

Return flights

31 Aug - 05 Sep	China Southern
31 Aug - 07 Sep	China Southern
31 Aug - 10 Sep	Lao Airlines
31 Aug - 17 Sep	Lao Airlines
31 Aug - 15 Sep	Lao Airlines
31 Aug - 03 Sep	Lao Airlines
31 Aug - 01 Sep	Lao Airlines
31 Aug - 19 Sep	Lao Airlines
31 Aug - 16 Sep	Lao Airlines	direct
31 Aug - 08 Sep	Lao Airlines	direct
30 Aug - 31 Aug	Thai Airways
30 Aug - 31 Aug	Jeju Air	direct

Also check the deals for one-way flights from Vientiane to Seoul 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 Vientiane to Seoul in August from $429

Return flights