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

Return flights

16 Sep - 19 Sep	VietJet Air
11 Sep - 14 Sep	VietJet Air
12 Sep - 15 Sep	VietJet Air
27 Sep - 09 Oct	VietJet Air
22 Sep - 26 Sep	VietJet Air
19 Sep - 23 Sep	Jeju Air
27 Sep - 07 Oct	VietJet Air
27 Sep - 13 Oct	Thai AirAsia X
30 Sep - 13 Oct	Thai AirAsia X
22 Sep - 13 Oct	Thai AirAsia X
19 Sep - 07 Oct	Thai AirAsia X
19 Sep - 09 Oct	Thai AirAsia X
18 Sep - 07 Oct	Thai AirAsia X
18 Sep - 09 Oct	Thai AirAsia X
30 Sep - 07 Oct	Thai AirAsia X
04 Sep - 18 Sep	Thai AirAsia X
06 Sep - 18 Sep	Thai AirAsia X
09 Sep - 18 Sep	Thai AirAsia X
11 Sep - 18 Sep	Thai AirAsia X
19 Sep - 25 Sep	Thai AirAsia X

Also check the deals for one-way flights from Osaka to Vientiane 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 Osaka to Vientiane in September from $375

Return flights