Cheapest one-way flights from Vientiane to Phnom-penh in September from $122

Best time to book flights for Vientiane (VTE) to Phnom-penh (PNH) flights at AirHint

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

One-Way flights

15 Sep Thai AirAsia
10 Sep Thai AirAsia
08 Sep Thai AirAsia
30 Sep Thai AirAsia
26 Sep Lao Airlines
15 Sep Vietnam Airlines direct
08 Sep Vietnam Airlines direct
30 Sep Vietnam Airlines direct
10 Sep Vietnam Airlines direct

Also check the deals for return flights from Vientiane to Phnom-penh in September.

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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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