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

Return flights

30 Sep - 03 Oct	VietJet Air
28 Sep - 01 Oct	VietJet Air
29 Sep - 03 Oct	VietJet Air
29 Sep - 02 Oct	VietJet Air
26 Sep - 03 Oct	VietJet Air
10 Sep - 18 Sep	VietJet Air
05 Sep - 07 Sep	VietJet Air
15 Sep - 18 Sep	VietJet Air
22 Sep - 26 Sep	VietJet Air
09 Sep - 16 Sep	VietJet Air
18 Sep - 26 Sep	VietJet Air
16 Sep - 20 Sep	VietJet Air
10 Sep - 19 Sep	VietJet Air
15 Sep - 19 Sep	VietJet Air
16 Sep - 23 Sep	VietJet Air
29 Sep - 17 Oct	Thai AirAsia X
29 Sep - 12 Oct	Thai AirAsia X
24 Sep - 12 Oct	Thai AirAsia X
25 Sep - 12 Oct	Thai AirAsia X
30 Sep - 17 Oct	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 297€

Return flights