Distance From Hospital de Sao Teotonio heliport to Ulaanbaatar Chinggis Khaan International Airport

The distance from Hospital de Sao Teotonio heliport () to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 5146 miles or 8282 kilometers or 4469 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 Viseu ( Portugal ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Viseu and Ulaanbaatar (Sergelen) takes around 11 hours 49 minutes.

Estimated flight time from Hospital de Sao Teotonio heliport, Viseu, Portugal to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 11 hours 49 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 • - UBN

Kilometers		8282 km
Statute Miles		5146 miles
Nautical Miles		4469 nm
Avg. Time of Flight		11 hours 49 minutes

Hospital de Sao Teotonio heliport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - to UBN Flight Path

Location of Hospital de Sao Teotonio heliport & Ulaanbaatar Chinggis Khaan International Airport is given below.
Click the map to view Viseu to Ulaanbaatar (Sergelen) nonstop flight path and travel direction.

Click to see flight route on Google Map between Viseu, Portugal and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between Viseu, Portugal and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • - UBN

Time difference between Viseu (Portugal) and Ulaanbaatar (Sergelen) (Mongolia) is 8 Hours.
Ulaanbaatar (Sergelen) time is 8 Hours ahead of Viseu.

Location	Local Time
Viseu (Portugal)	2026-11-02, 07:57:06 WET
Ulaanbaatar (Sergelen) (Mongolia)	2026-11-02, 15:57:06 +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

Hospital de Sao Teotonio heliport ( / LPTT) Viseu, Portugal

Destination

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