# Distance from Kathmandu (KTM) to Niagara-on-the-lake (YCM)

> 11,975 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 11,975 km / 7,441 mi / 6,466 nm
- **Estimated flight time**: 15h
- **Heading**: 348° (north northwest)
- **Return heading**: 14° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Nepal) → Canada
- **Intercontinental**: Asia → North America
- **Time difference**: -9.75h (When it's 07:02 in Kathmandu, it's 21:17 in Niagara-on-the-lake)
- **Elevation difference**: 4,069 ft (YCM is lower than KTM)

## Airports

### [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)

- City: Kathmandu, Nepal
- ICAO: VNKT
- Timezone: Asia/Kathmandu
- Coordinates: 27.700000, 85.360000
- Elevation: 4,390 ft

### [St Catharines / Niagara District Airport (YCM)](https://www.flightduration.online/airport/ycm-niagara-on-the-lake-st-catharines-niagara-district-airport/1ef266de-b2b5-6a64-b416-06bb2780ed98)

- City: Niagara-on-the-lake, Canada
- ICAO: CYSN
- Timezone: America/Toronto
- Coordinates: 43.190000, -79.170000
- Elevation: 321 ft

## Route notes

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

Time-zone information: When it's 07:02 in Kathmandu, it's 21:17 in Niagara-on-the-lake.
With a 9.75-hour time difference, expect significant jet lag.

## Related

- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [St Catharines / Niagara District Airport (YCM)](https://www.flightduration.online/airport/ycm-niagara-on-the-lake-st-catharines-niagara-district-airport/1ef266de-b2b5-6a64-b416-06bb2780ed98)
- [Flight duration calculator](/#calculator)