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Did you mean flights from Vientiane to Ulaanbaatar?
Mongolia
Ulaanbaatar International Airport
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Laos
Wattay International Airport
At present, there are no direct flights from Ulaanbaatar to Vientiane.
However, there are several flights from UBN to VTE with a stopover.
Select a stopover airport from the list below to see which airlines operate flights from UBN to VTE, and to see what flight schedules are available.
Vientiane is a tropical destination known for its warm climate, with temperatures between 25°C and 30°C (77°F to 86°F) throughout the year. The area is characterized by high humidity and frequent rainfall.
Being located north of the equator, Vientiane experiences its dry season from November to April, making this the perfect time to visit. In this period, you can expect mostly dry conditions, while the wet season will see days of rain. Humidity and temperatures are consistently high all year long.

In total there are 2 airlines that cover the full route from Ulaanbaatar UBN to Vientiane VTE. These airlines are:
All other flights from Ulaanbaatar to Vientiane are operated by a combination of multiple carriers, which are listed below:
In total there are 2 alliances that cover the full route from Ulaanbaatar UBN to Vientiane VTE. These alliances are:
You can fly the full journey from UBN to VTE in either Economy or Business Class. Premium Economy and First Class are not available on this route, at least not on the full route with just 1 stopover.
However, for the first part of this route, Economy, Premium Economy, Business and First Class are available. This depends on the stopover airport of your choice though.
Again depending on your stopover airport, available classes for the second part of this route are Economy and Business Class.
In total there are 2 aircraft types that cover the full route from Ulaanbaatar to Vientiane. These aircrafts are:
All other flights from Ulaanbaatar to Vientiane are operated by a combination of multiple aircraft types.
The distance between Ulaanbaatar and Vientiane is 2,066 miles (3,324 kilometers).
However, because there are no direct flights between UBN and VTE, the distance of the full journey varies between 2,691 and 4,353 miles (or 4,331 and 7,005 kilometers), depending on your stopover airport.
Flights from Ulaanbaatar to Vientiane take from 7 hours and 20 minutes up to 10 hours and 25 minutes, depending on your stopover airport.
Please note that these times refer to the actual flight times, excluding the stopover time in between connecting flights, as this depends on your stopover airport as well as your date(s) of travel.
There is 1 airport in Vientiane: Wattay International Airport (VTE).
From 7 hours and 20 minutes up to 10 hours and 25 minutes, depending on your stopover airport.
Note that this excludes the layover time in between connecting flights.
Because there are no direct flights between UBN and VTE, the total distance of the full journey varies between 2,691 and 4,353 miles (or 4,331 and 7,005 kilometers), depending on your stopover airport.
Air Busan and Jeju Air are flying the full route from Ulaanbaatar to Vientiane.
MIAT Mongolian Airlines, Lao Airlines, Thai Airways, Hunnu Air, China United, Spring Airlines, China Eastern, VietJet Air, Jin Air, Asiana Airlines, Aero Mongolia, Korean Air, Tway Air and Scoot operate several connecting flights, but only partly.
SkyTeam and Star Alliance are flying from Ulaanbaatar to Vientiane.
You can fly the full route from Ulaanbaatar to Vientiane (with 1 stopover) in Economy and Business Class.
Aircraft types that fly the full route from Ulaanbaatar to Vientiane (with 1 stopover):
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