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

Return flights

30 Jul - 06 Aug	VietJet Air
31 Jul - 07 Aug	China Southern
30 Jul - 03 Aug	China Southern
29 Jul - 11 Aug	VietJet Air
28 Jul - 18 Aug	VietJet Air
27 Jul - 06 Aug	VietJet Air
30 Jul - 07 Aug	China Southern
31 Jul - 28 Aug	VietJet Air
29 Jul - 10 Aug	VietJet Air
30 Jul - 11 Aug	VietJet Air
29 Jul - 31 Jul	VietJet Air
28 Jul - 29 Jul	VietJet Air
28 Jul - 30 Jul	VietJet Air
28 Jul - 31 Jul	Jeju Air	direct
29 Jul - 31 Jul	Jeju Air	direct
28 Jul - 30 Jul	Jeju Air	direct
28 Jul - 29 Jul	Jeju Air	direct

Also check the deals for one-way flights from Seoul to Vientiane 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 Seoul to Vientiane in July from 230€

Return flights