AirHint found the following cheapest return flights from Seoul (GMP) to Vientiane (VTE) in December 2025 (see full year).
Return flights
| 08 Dec - 12 Dec | T'way Air | ||
| 27 Dec - 01 Jan | Jin Air | ||
| 27 Dec - 02 Jan | Asiana Airlines | ||
| 18 Dec - 21 Dec | Asiana Airlines | ||
| 21 Dec - 26 Dec | Air Busan |
Also check the deals for one-way flights from Seoul to Vientiane in December.
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