Distance From Cascais Airport to Ulaanbaatar Chinggis Khaan International Airport, CAT - UBN Distance

The distance from Cascais Airport (CAT) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 5298 miles or 8526 kilometers or 4601 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 Cascais ( Portugal ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Cascais and Ulaanbaatar (Sergelen) takes around 12 hours 10 minutes.

Estimated flight time from Cascais Airport, Cascais, Portugal to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 12 hours 10 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 • CAT - UBN

Kilometers		8526 km
Statute Miles		5298 miles
Nautical Miles		4601 nm
Avg. Time of Flight		12 hours 10 minutes

Cascais Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - CAT to UBN Flight Path

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

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

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

Time Difference Between the Airports • CAT - UBN

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

Location	Local Time
Cascais (Portugal)	2025-12-16, 17:31:12 WET
Ulaanbaatar (Sergelen) (Mongolia)	2025-12-17, 01:31:12 +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

Cascais Airport (CAT / LPCS) Cascais, Portugal

Destination

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