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

Return flights

20 Apr - 24 Apr	Vietnam Airlines
10 Apr - 17 Apr	Vietnam Airlines
09 Apr - 13 Apr	China Southern
01 Apr - 03 Apr	China Southern
17 Apr - 21 Apr	China Southern
07 Apr - 11 Apr	China Southern
17 Apr - 06 May	AirAsia X
01 Apr - 21 Apr	AirAsia X
15 Apr - 06 May	AirAsia X
24 Apr - 06 May	AirAsia X
15 Apr - 16 Apr	China Southern
20 Apr - 06 May	AirAsia X
17 Apr - 08 May	AirAsia X
24 Apr - 08 May	AirAsia X
20 Apr - 08 May	AirAsia X
01 Apr - 16 Apr	AirAsia X
01 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 $225

Return flights