Distance From London Heathrow Airport to Ulaanbaatar Chinggis Khaan International Airport, LHR - UBN Distance

The distance from London Heathrow Airport (LHR) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 4356 miles or 7009 kilometers or 3782 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 London ( United Kingdom ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between London and Ulaanbaatar (Sergelen) takes around 10 hours 0 minutes.

Estimated flight time from London Heathrow Airport, London, United Kingdom to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 10 hours 0 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 • LHR - UBN

Kilometers		7009 km
Statute Miles		4356 miles
Nautical Miles		3782 nm
Avg. Time of Flight		10 hours 0 minutes

London Heathrow Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - LHR to UBN Flight Path

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

Click to see flight route on Google Map between London, United Kingdom and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between London, United Kingdom and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • LHR - UBN

Time difference between London (United Kingdom) and Ulaanbaatar (Sergelen) (Mongolia) is 8 Hours.
Ulaanbaatar (Sergelen) time is 8 Hours ahead of London.

Location	Local Time
London (United Kingdom)	2025-12-15, 09:31:48 GMT
Ulaanbaatar (Sergelen) (Mongolia)	2025-12-15, 17:31:48 +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

London Heathrow Airport (LHR / EGLL) London, United Kingdom

Destination

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