AirHint found the following cheapest return flights from Colombo (CMB) to Vientiane (VTE) in August 2025 (see full year).

Return flights

30 Aug - 14 Sep	AirAsia
21 Aug - 25 Aug	IndiGo
22 Aug - 28 Aug	Thai AirAsia
21 Aug - 28 Aug	Thai AirAsia
21 Aug - 27 Aug	Thai AirAsia
21 Aug - 29 Aug	Thai AirAsia
22 Aug - 27 Aug	Thai AirAsia
22 Aug - 29 Aug	Thai AirAsia
23 Aug - 28 Aug	Thai AirAsia
23 Aug - 27 Aug	Thai AirAsia
23 Aug - 29 Aug	Thai AirAsia
21 Aug - 07 Sep	Thai AirAsia
22 Aug - 07 Sep	Thai AirAsia
21 Aug - 08 Sep	Thai AirAsia
22 Aug - 08 Sep	Thai AirAsia
23 Aug - 07 Sep	Thai AirAsia
23 Aug - 08 Sep	Thai AirAsia
21 Aug - 10 Sep	Thai AirAsia
22 Aug - 10 Sep	Thai AirAsia
23 Aug - 10 Sep	Thai AirAsia

Also check the deals for one-way flights from Colombo to Vientiane in August.

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 Colombo to Vientiane in August from 353€

Return flights