Cheapest return flights from Kathmandu to Vientiane in September from $418

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

Return flights

03 Sep - 05 Sep Thai AirAsia
03 Sep - 20 Sep Thai AirAsia
26 Sep - 05 Oct Thai AirAsia
03 Sep - 19 Sep Thai AirAsia
05 Sep - 20 Sep Thai AirAsia
05 Sep - 19 Sep Thai AirAsia
28 Sep - 05 Oct Thai AirAsia
26 Sep - 12 Oct Thai AirAsia
28 Sep - 12 Oct Thai AirAsia

Also check the deals for one-way flights from Kathmandu to Vientiane in September.

Skyscanner

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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