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

Return flights

28 Jul - 30 Jul	VietJet Air
29 Jul - 13 Aug	VietJet Air
29 Jul - 12 Aug	VietJet Air
31 Jul - 12 Aug	VietJet Air
31 Jul - 07 Aug	China Southern
28 Jul - 02 Aug	China Southern
29 Jul - 15 Aug	AirAsia
31 Jul - 20 Aug	Thai AirAsia
31 Jul - 15 Aug	Thai AirAsia
31 Jul - 13 Aug	Thai AirAsia
27 Jul - 15 Aug	Lao Airlines
29 Jul - 30 Jul	AirAsia
27 Jul - 30 Jul	Lao Airlines
27 Jul - 28 Jul	Lao Airlines
28 Jul - 30 Jul	Jeju Air	direct

Also check the deals for one-way flights from Vientiane to Seoul 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 Vientiane to Seoul in July from 283€

Return flights