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

Return flights

27 Jul - 02 Aug	Air Cambodia
30 Jul - 15 Aug	Thai AirAsia
30 Jul - 19 Aug	Thai AirAsia
30 Jul - 12 Aug	Thai AirAsia
30 Jul - 14 Aug	Thai AirAsia
30 Jul - 20 Aug	Thai AirAsia
30 Jul - 02 Aug	Thai AirAsia
30 Jul - 05 Aug	Thai AirAsia
30 Jul - 17 Aug	Thai AirAsia
30 Jul - 18 Aug	Thai AirAsia
28 Jul - 30 Jul	Thai AirAsia
27 Jul - 30 Jul	Thai AirAsia
28 Jul - 31 Jul	Thai AirAsia
27 Jul - 31 Jul	Thai AirAsia
27 Jul - 29 Jul	Thai AirAsia

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

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 July from 285€

Return flights