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KTM to REP: distance & flight time
Kathmandu (Tribhuvan International Airport) → Siem-reap (Siem Reap International Airport)
1,545 mi
2,487 km · 1,343 nm
3h 30m
estimated nonstop flight time
+1.3h
time difference · heading southeast
See live KTM→REP fares Phone-only fares on this route — call free
Flight time details
1,545 miles nonstop takes roughly 3h 30m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.3-hour time gain when reading arrival times on your ticket.
The two airports
- KTM — Tribhuvan International Airport · Kathmandu, Nepal
- REP — Siem Reap International Airport · Siem-reap, Cambodia
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 KTM
- SIF · Simara Airport44 mi away
- RHP · Ramechhap Airport48 mi away
- BHR · Bharatpur Airport57 mi away
- MEY · Meghauli Airport70 mi away
Near REP
- BBM · Battambang Airport45 mi away
- KZC · Kampong Chhnang Airport95 mi away
- PXR · Surin Airport103 mi away
- TDX · Trat Airport128 mi away
Frequently asked questions
How far is KTM from REP?
The flight distance from Kathmandu (KTM) to Siem-reap (REP) is 1,545 miles (2,487 km, 1,343 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KTM to REP?
A nonstop flight takes about 3h 30m 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 Kathmandu and Siem-reap?
Siem-reap is 1.3 hours ahead of Kathmandu.
What is the cheapest way to fly from KTM to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KTM–REP that never appear on search engines, with no booking fees.