Cheapest return flights from Phnom-penh to Vientiane in December from $351

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

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

Return flights

20 Dec - 26 Dec Vietnam Airlines direct
20 Dec - 09 Jan Thai AirAsia
15 Dec - 22 Dec Thai AirAsia
15 Dec - 05 Jan Thai AirAsia
15 Dec - 26 Dec Thai AirAsia
15 Dec - 20 Dec Thai AirAsia
20 Dec - 08 Jan Thai AirAsia
20 Dec - 22 Dec Thai AirAsia
20 Dec - 05 Jan Thai AirAsia

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

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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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