AirHint found the following cheapest return flights from Kolkata (CCU) to Vientiane (VTE) in December 2025 (see full year).
Return flights
| 19 Dec - 26 Dec | Thai Airways | ||
| 05 Dec - 08 Dec | Thai AirAsia | ||
| 20 Dec - 27 Dec | Thai AirAsia | ||
| 24 Dec - 29 Dec | Thai AirAsia | ||
| 25 Dec - 29 Dec | Thai AirAsia |
Also check the deals for one-way flights from Kolkata to Vientiane in December.
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