Cheapest one-way flights from Kathmandu to Vientiane in September from $381

Best time to book flights for Kathmandu (KTM) to Vientiane (VTE) flights at AirHint

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

One-Way flights

23 Sep Thai Airways

Also check the deals for return 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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