Distance From Gautam Buddha International Airport to Ulaanbaatar Chinggis Khaan International Airport, BWA - UBN Distance

The distance from Gautam Buddha International Airport (BWA) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 1878 miles or 3021 kilometers or 1631 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Siddharthanagar (Bhairahawa) ( Nepal ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Siddharthanagar (Bhairahawa) and Ulaanbaatar (Sergelen) takes around 4 hours 18 minutes.

Estimated flight time from Gautam Buddha International Airport, Siddharthanagar (Bhairahawa), Nepal to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 4 hours 18 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • BWA - UBN

Kilometers		3021 km
Statute Miles		1878 miles
Nautical Miles		1631 nm
Avg. Time of Flight		4 hours 18 minutes

Gautam Buddha International Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - BWA to UBN Flight Path

Location of Gautam Buddha International Airport & Ulaanbaatar Chinggis Khaan International Airport is given below.
Click the map to view Siddharthanagar (Bhairahawa) to Ulaanbaatar (Sergelen) nonstop flight path and travel direction.

Click to see flight route on Google Map between Siddharthanagar (Bhairahawa), Nepal and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between Siddharthanagar (Bhairahawa), Nepal and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • BWA - UBN

Time difference between Siddharthanagar (Bhairahawa) (Nepal) and Ulaanbaatar (Sergelen) (Mongolia) is 2 Hours 15 Minutes.
Ulaanbaatar (Sergelen) time is 2 Hours 15 Minutes ahead of Siddharthanagar (Bhairahawa).

Location	Local Time
Siddharthanagar (Bhairahawa) (Nepal)	2026-05-01, 17:14:32 +0545
Ulaanbaatar (Sergelen) (Mongolia)	2026-05-01, 19:29:32 +08

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Gautam Buddha International Airport (BWA / VNBW) Siddharthanagar (Bhairahawa), Nepal

Destination

Ulaanbaatar Chinggis Khaan International Airport (UBN / ZMCK) Ulaanbaatar (Sergelen), Mongolia