Distance From Costello Airport to Tribhuvan International Airport

The distance from Costello Airport () to Tribhuvan International Airport (KTM) is 8240 miles or 13261 kilometers or 7156 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 Oak Grove ( United States ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Oak Grove and Kathmandu takes around 18 hours 56 minutes.

Estimated flight time from Costello Airport, Oak Grove, United States to Tribhuvan International Airport, Kathmandu, Nepal is 18 hours 56 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 • - KTM

Kilometers		13261 km
Statute Miles		8240 miles
Nautical Miles		7156 nm
Avg. Time of Flight		18 hours 56 minutes

Costello Airport to Tribhuvan International Airport Flight Route Map - to KTM Flight Path

Location of Costello Airport & Tribhuvan International Airport is given below.
Click the map to view Oak Grove to Kathmandu nonstop flight path and travel direction.

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

Nonstop flight route between Oak Grove, United States and Kathmandu, Nepal.

Time Difference Between the Airports • - KTM

Time difference between Oak Grove (United States) and Kathmandu (Nepal) is 11 Hours 45 Minutes.
Kathmandu time is 11 Hours 45 Minutes ahead of Oak Grove.

Location	Local Time
Oak Grove (United States)	2025-12-14, 04:25:18 CST
Kathmandu (Nepal)	2025-12-14, 16:10:18 +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

Costello Airport ( / 2LA7) Oak Grove, United States

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal