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

Return flights

19 Sep - 20 Sep	VietJet Air
12 Sep - 15 Sep	VietJet Air
07 Sep - 10 Sep	VietJet Air
24 Sep - 01 Oct	VietJet Air
05 Sep - 09 Sep	VietJet Air
17 Sep - 20 Sep	VietJet Air
18 Sep - 20 Sep	VietJet Air
08 Sep - 15 Sep	VietJet Air
06 Sep - 09 Sep	VietJet Air
12 Sep - 21 Sep	VietJet Air
04 Sep - 07 Sep	VietJet Air
28 Sep - 11 Oct	Thai AirAsia X
20 Sep - 11 Oct	Thai AirAsia X
27 Sep - 11 Oct	Thai AirAsia X
16 Sep - 07 Oct	Thai AirAsia X
17 Sep - 07 Oct	Thai AirAsia X
28 Sep - 07 Oct	Thai AirAsia X
20 Sep - 07 Oct	Thai AirAsia X
27 Sep - 07 Oct	Thai AirAsia X
24 Sep - 11 Oct	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 316€

Return flights