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

Return flights

09 Oct - 29 Oct	Thai AirAsia
22 Oct - 29 Oct	Thai AirAsia
09 Oct - 21 Oct	Thai AirAsia
09 Oct - 26 Oct	Thai AirAsia
22 Oct - 26 Oct	Thai AirAsia
26 Oct - 04 Nov	Air Cambodia
09 Oct - 16 Oct	Thai AirAsia
09 Oct - 20 Oct	Thai AirAsia
09 Oct - 19 Oct	Thai AirAsia
22 Oct - 07 Nov	Thai AirAsia
26 Oct - 29 Oct	Thai AirAsia
26 Oct - 15 Nov	Thai AirAsia
26 Oct - 14 Nov	Thai AirAsia
22 Oct - 04 Nov	Thai AirAsia
26 Oct - 07 Nov	Thai AirAsia

Also check the deals for one-way flights from Phnom-penh to Vientiane in October.

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 Phnom-penh to Vientiane in October from 246€

Return flights