Need help booking?
Unpublished phone-only deals available
ATY to KTM: distance & flight time
Watertown (Watertown Regional Airport) → Kathmandu (Tribhuvan International Airport)
7,417 mi
11,937 km · 6,446 nm
15h 1m
estimated nonstop flight time
+10.8h
time difference · heading north
See live ATY→KTM fares Phone-only fares on this route — call free
Flight time details
7,417 miles nonstop takes roughly 15h 1m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10.8-hour time gain when reading arrival times on your ticket.
The two airports
- ATY — Watertown Regional Airport · Watertown, 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 ATY
- HON · Huron Regional Airport64 mi away
- ABR · Aberdeen Regional Airport72 mi away
- MHE · Mitchell Municipal Airport90 mi away
- FSD · Joe Foss Field Airport94 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 ATY from KTM?
The flight distance from Watertown (ATY) to Kathmandu (KTM) is 7,417 miles (11,937 km, 6,446 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ATY to KTM?
A nonstop flight takes about 15h 1m 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 Watertown and Kathmandu?
Kathmandu is 10.8 hours ahead of Watertown.
What is the cheapest way to fly from ATY to KTM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ATY–KTM that never appear on search engines, with no booking fees.