Distance From Ocean Reef Club Airport to Ulaanbaatar Chinggis Khaan International Airport, OCA - UBN Distance

The distance from Ocean Reef Club Airport (OCA) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 7376 miles or 11870 kilometers or 6405 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 Key Largo ( United States ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Key Largo and Ulaanbaatar (Sergelen) takes around 16 hours 57 minutes.

Estimated flight time from Ocean Reef Club Airport, Key Largo, United States to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 16 hours 57 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 • OCA - UBN

Kilometers		11870 km
Statute Miles		7376 miles
Nautical Miles		6405 nm
Avg. Time of Flight		16 hours 57 minutes

Ocean Reef Club Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - OCA to UBN Flight Path

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

Click to see flight route on Google Map between Key Largo, United States and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between Key Largo, United States and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • OCA - UBN

Time difference between Key Largo (United States) and Ulaanbaatar (Sergelen) (Mongolia) is 12 Hours.
Ulaanbaatar (Sergelen) time is 12 Hours ahead of Key Largo.

Location	Local Time
Key Largo (United States)	2026-06-19, 02:57:38 EDT
Ulaanbaatar (Sergelen) (Mongolia)	2026-06-19, 14:57:38 +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

Ocean Reef Club Airport (OCA / 07FA) Key Largo, United States

Destination

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