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

Return flights

11 Sep - 18 Sep	VietJet Air
09 Sep - 16 Sep	VietJet Air
04 Sep - 12 Sep	VietJet Air
20 Sep - 22 Sep	VietJet Air
20 Sep - 22 Sep	Jeju Air	direct
06 Sep - 10 Sep	Thai AirAsia
17 Sep - 25 Sep	China Southern
15 Sep - 23 Sep	China Southern
11 Sep - 12 Sep	Thai AirAsia
06 Sep - 12 Sep	Thai AirAsia
20 Sep - 10 Oct	Thai AirAsia
27 Sep - 10 Oct	Thai AirAsia
30 Sep - 10 Oct	Thai AirAsia
27 Sep - 17 Oct	Thai AirAsia
27 Sep - 15 Oct	Thai AirAsia
30 Sep - 17 Oct	Thai AirAsia
30 Sep - 15 Oct	Thai AirAsia
30 Sep - 20 Oct	Thai AirAsia
21 Sep - 10 Oct	Thai AirAsia
20 Sep - 06 Oct	Thai AirAsia

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

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 September from 244€

Return flights