Distance From Olga Bay Seaplane Base to Tribhuvan International Airport, KOY - KTM Distance

The distance from Olga Bay Seaplane Base (KOY) to Tribhuvan International Airport (KTM) is 5633 miles or 9065 kilometers or 4891 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 Olga Bay ( United States ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Olga Bay and Kathmandu takes around 12 hours 57 minutes.

Estimated flight time from Olga Bay Seaplane Base, Olga Bay, United States to Tribhuvan International Airport, Kathmandu, Nepal is 12 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 • KOY - KTM

Kilometers		9065 km
Statute Miles		5633 miles
Nautical Miles		4891 nm
Avg. Time of Flight		12 hours 57 minutes

Olga Bay Seaplane Base to Tribhuvan International Airport Flight Route Map - KOY to KTM Flight Path

Location of Olga Bay Seaplane Base & Tribhuvan International Airport is given below.
Click the map to view Olga Bay to Kathmandu nonstop flight path and travel direction.

Click to see flight route on Google Map between Olga Bay, United States and Kathmandu, Nepal. .

Nonstop flight route between Olga Bay, United States and Kathmandu, Nepal.

Time Difference Between the Airports • KOY - KTM

Time difference between Olga Bay (United States) and Kathmandu (Nepal) is 14 Hours 45 Minutes.
Kathmandu time is 14 Hours 45 Minutes ahead of Olga Bay.

Location	Local Time
Olga Bay (United States)	2026-11-08, 15:53:56 AKST
Kathmandu (Nepal)	2026-11-09, 06:38:56 +0545

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

Olga Bay Seaplane Base (KOY / KOY) Olga Bay, United States

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal