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

Return flights

03 Aug - 10 Aug	Thai AirAsia
12 Aug - 18 Sep	Thai VietJet Air
31 Aug - 17 Sep	Thai AirAsia
31 Aug - 19 Sep	Thai AirAsia
29 Aug - 17 Sep	Thai AirAsia
29 Aug - 19 Sep	Thai AirAsia
25 Aug - 12 Sep	Thai AirAsia
31 Aug - 12 Sep	Thai AirAsia
22 Aug - 12 Sep	Thai AirAsia
29 Aug - 12 Sep	Thai AirAsia
18 Aug - 21 Aug	Thai AirAsia
18 Aug - 23 Aug	Thai AirAsia
07 Aug - 21 Aug	Thai AirAsia
04 Aug - 21 Aug	Thai AirAsia
07 Aug - 23 Aug	Thai AirAsia
04 Aug - 23 Aug	Thai AirAsia
18 Aug - 07 Sep	Thai AirAsia
14 Aug - 21 Aug	Thai AirAsia
14 Aug - 23 Aug	Thai AirAsia
22 Aug - 23 Aug	Thai AirAsia

Also check the deals for one-way flights from Chiang Mai 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 Chiang Mai to Vientiane in August from $222

Return flights