Distance From Port Walter Seaplane Base to Ulaanbaatar Chinggis Khaan International Airport, PWR - UBN Distance

The distance from Port Walter Seaplane Base (PWR) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 4427 miles or 7125 kilometers or 3845 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.

---

How long does it take to travel from Port Walter ( United States ) to Ulaanbaatar (Sergelen) ( Mongolia )?

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

Estimated flight time from Port Walter Seaplane Base, Port Walter, United States to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 10 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 • PWR - UBN

Kilometers		7125 km
Statute Miles		4427 miles
Nautical Miles		3845 nm
Avg. Time of Flight		10 hours 10 minutes

Port Walter Seaplane Base to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - PWR to UBN Flight Path

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

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

Nonstop flight route between Port Walter, United States and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • PWR - UBN

Time difference between Port Walter (United States) and Ulaanbaatar (Sergelen) (Mongolia) is 16 Hours.
Ulaanbaatar (Sergelen) time is 16 Hours ahead of Port Walter.

Location	Local Time
Port Walter (United States)	2026-08-07, 19:21:01 AKDT
Ulaanbaatar (Sergelen) (Mongolia)	2026-08-08, 11:21:01 +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

Port Walter Seaplane Base (PWR / PPWR) Port Walter, United States

Destination

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