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COU to KTM: distance & flight time
Columbia (Columbia Regional Airport) → Kathmandu (Tribhuvan International Airport)
7,838 mi
12,615 km · 6,811 nm
15h 50m
estimated nonstop flight time
+11.8h
time difference · heading north
See live COU→KTM fares Phone-only fares on this route — call free
Flight time details
7,838 miles nonstop takes roughly 15h 50m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.8-hour time gain when reading arrival times on your ticket.
The two airports
- COU — Columbia Regional Airport · Columbia, United States
- KTM — Tribhuvan International Airport · Kathmandu, Nepal
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near COU
- JEF · Jefferson City Memorial Airport16 mi away
- AIZ · Lee C Fine Memorial Airport53 mi away
- SZL · Whiteman Air Force Base72 mi away
- TBN · Waynesville-St. Robert Regional Forney field75 mi away
Near KTM
- SIF · Simara Airport44 mi away
- RHP · Ramechhap Airport48 mi away
- BHR · Bharatpur Airport57 mi away
- MEY · Meghauli Airport70 mi away
Frequently asked questions
How far is COU from KTM?
The flight distance from Columbia (COU) to Kathmandu (KTM) is 7,838 miles (12,615 km, 6,811 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from COU to KTM?
A nonstop flight takes about 15h 50m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from COU to KTM?
Nonstop service on COU–KTM depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 15h 50m nonstop estimate.
What is the time difference between Columbia and Kathmandu?
Kathmandu is 11.8 hours ahead of Columbia.
What is the cheapest way to fly from COU to KTM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on COU–KTM that never appear on search engines, with no booking fees.
Why are some COU to KTM fares phone-only?
Consolidator contracts let us sell certain COU–KTM tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.