Distance From Ritter Field to Tribhuvan International Airport

The distance from Ritter Field () to Tribhuvan International Airport (KTM) is 7661 miles or 12330 kilometers or 6653 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 Illinois City ( United States ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Illinois City and Kathmandu takes around 17 hours 36 minutes.

Estimated flight time from Ritter Field, Illinois City, United States to Tribhuvan International Airport, Kathmandu, Nepal is 17 hours 36 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		12330 km
Statute Miles		7661 miles
Nautical Miles		6653 nm
Avg. Time of Flight		17 hours 36 minutes

Ritter Field to Tribhuvan International Airport Flight Route Map - to KTM Flight Path

Location of Ritter Field & Tribhuvan International Airport is given below.
Click the map to view Illinois City to Kathmandu nonstop flight path and travel direction.

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

Nonstop flight route between Illinois City, United States and Kathmandu, Nepal.

Time Difference Between the Airports • - KTM

Time difference between Illinois City (United States) and Kathmandu (Nepal) is 10 Hours 45 Minutes.
Kathmandu time is 10 Hours 45 Minutes ahead of Illinois City.

Location	Local Time
Illinois City (United States)	2026-03-20, 05:40:46 CDT
Kathmandu (Nepal)	2026-03-20, 16:25:46 +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

Ritter Field ( / 2IS4) Illinois City, United States

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal