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

Return flights

09 Sep - 13 Sep	VietJet Air
13 Sep - 16 Sep	VietJet Air
20 Sep - 27 Sep	Jeju Air
24 Sep - 01 Oct	VietJet Air
01 Sep - 05 Sep	VietJet Air
18 Sep - 26 Sep	Jeju Air
19 Sep - 22 Sep	VietJet Air
20 Sep - 03 Oct	Thai AirAsia X
13 Sep - 03 Oct	Thai AirAsia X
18 Sep - 03 Oct	Thai AirAsia X
27 Sep - 03 Oct	Thai AirAsia X
12 Sep - 03 Oct	Thai AirAsia X
30 Sep - 03 Oct	Thai AirAsia X
28 Sep - 03 Oct	Thai AirAsia X
22 Sep - 03 Oct	Thai AirAsia X
14 Sep - 03 Oct	Thai AirAsia X
08 Sep - 18 Sep	Thai AirAsia X
13 Sep - 18 Sep	Thai AirAsia X
04 Sep - 18 Sep	Thai AirAsia X
12 Sep - 18 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 334€

Return flights