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RML to KTM: distance & flight time
Colombo (Colombo Ratmalana Airport) → Kathmandu (Tribhuvan International Airport)
1,486 mi
2,392 km · 1,291 nm
3h 42m
estimated nonstop flight time
+0.3h
time difference · heading north
See live RML→KTM fares Phone-only fares on this route — call free
Flight time details
1,486 miles nonstop takes roughly 3h 42m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 0.3-hour time gain when reading arrival times on your ticket.
The two airports
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
- 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 RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 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 RML from KTM?
The flight distance from Colombo (RML) to Kathmandu (KTM) is 1,486 miles (2,392 km, 1,291 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to KTM?
A nonstop flight takes about 3h 42m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Colombo and Kathmandu?
Kathmandu is 0.3 hours ahead of Colombo.
What is the cheapest way to fly from RML to KTM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–KTM that never appear on search engines, with no booking fees.