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

Return flights

25 Jul - 27 Jul	Thai AirAsia
25 Jul - 07 Aug	Thai AirAsia
25 Jul - 06 Aug	Thai AirAsia
18 Jul - 27 Jul	Thai AirAsia
18 Jul - 21 Jul	Thai AirAsia
18 Jul - 07 Aug	Thai AirAsia
25 Jul - 05 Aug	Thai AirAsia
18 Jul - 06 Aug	Thai AirAsia
18 Jul - 25 Jul	Thai AirAsia
06 Jul - 11 Jul	Thai AirAsia
18 Jul - 05 Aug	Thai AirAsia
06 Jul - 09 Jul	Thai AirAsia
06 Jul - 27 Jul	Thai AirAsia
06 Jul - 21 Jul	Thai AirAsia
06 Jul - 16 Jul	Thai AirAsia
06 Jul - 25 Jul	Thai AirAsia
29 Jul - 05 Aug	Vietnam Airlines	direct

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 $294

Return flights