Need help booking?
Unpublished phone-only deals available
ACH to KTM: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Kathmandu (Tribhuvan International Airport)
4,194 mi
6,749 km · 3,644 nm
8h 41m
estimated nonstop flight time
+3.8h
time difference · heading east
See live ACH→KTM fares Phone-only fares on this route — call free
Flight time details
4,194 miles nonstop takes roughly 8h 41m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.8-hour time gain when reading arrival times on your ticket.
The two airports
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- 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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 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 ACH from KTM?
The flight distance from Altenrhein (ACH) to Kathmandu (KTM) is 4,194 miles (6,749 km, 3,644 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to KTM?
A nonstop flight takes about 8h 41m 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 Altenrhein and Kathmandu?
Kathmandu is 3.8 hours ahead of Altenrhein.
What is the cheapest way to fly from ACH to KTM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–KTM that never appear on search engines, with no booking fees.