AirHint found the following cheapest return flights from Seoul (ICN) to Vientiane (VTE) in April 2026 (see full year).

Return flights

01 Apr - 04 Apr	China Southern
10 Apr - 18 Apr	China Southern
29 Apr - 05 May	VietJet Air
29 Apr - 11 May	AirAsia X
30 Apr - 03 May	Singapore Airlines
29 Apr - 09 May	AirAsia X
29 Apr - 03 May	AirAsia X
01 Apr - 18 Apr	AirAsia X
01 Apr - 14 Apr	AirAsia X
01 Apr - 13 Apr	AirAsia X
10 Apr - 13 Apr	AirAsia X

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

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 April from 279€

Return flights