AirHint found the following cheapest return flights from Kolkata (CCU) to Vientiane (VTE) in July 2025 (see full year).

Return flights

24 Jul - 10 Aug	Thai AirAsia
15 Jul - 15 Jul	Thai AirAsia
12 Jul - 15 Jul	Thai AirAsia
08 Jul - 15 Jul	Thai Lion Air
10 Jul - 15 Jul	Thai AirAsia
07 Jul - 15 Jul	Thai AirAsia
24 Jul - 08 Aug	Thai AirAsia
20 Jul - 08 Aug	Thai AirAsia
13 Jul - 15 Jul	Thai AirAsia
19 Jul - 08 Aug	Thai AirAsia
05 Jul - 15 Jul	Thai AirAsia
08 Jul - 11 Jul	Thai AirAsia
09 Jul - 15 Jul	Thai AirAsia
10 Jul - 11 Jul	Thai AirAsia

Also check the deals for one-way flights from Kolkata 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 Kolkata to Vientiane in July from 274€

Return flights