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

Return flights

29 Sep - 07 Oct	Thai Lion Air
08 Sep - 10 Sep	Thai Lion Air
07 Sep - 09 Sep	Thai Lion Air
08 Sep - 09 Sep	Thai Lion Air
29 Sep - 15 Oct	Thai AirAsia
29 Sep - 08 Oct	Thai AirAsia
29 Sep - 05 Oct	Thai AirAsia
06 Sep - 12 Sep	Thai AirAsia
29 Sep - 17 Oct	Thai AirAsia
10 Sep - 12 Sep	Thai AirAsia
06 Sep - 09 Sep	Thai AirAsia
06 Sep - 10 Sep	Thai AirAsia
08 Sep - 12 Sep	Thai AirAsia
10 Sep - 16 Sep	Thai AirAsia
06 Sep - 16 Sep	Thai AirAsia

Also check the deals for one-way flights from Phuket 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 Phuket to Vientiane in September from $217

Return flights