# Distance from Colombo (CMB) to St Mary'S (KSM)

> 10,641 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 10,641 km / 6,612 mi / 5,746 nm
- **Estimated flight time**: 14h
- **Heading**: 25° (north northeast)
- **Return heading**: 297° (west northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Sri Lanka) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -13.5h (When it's 17:05 in Colombo, it's 03:35 in St Mary'S)
- **Elevation difference**: 284 ft (KSM is higher than CMB)

## Airports

### [Bandaranaike International Apt Colombo Airport (CMB)](https://www.flightduration.online/airport/cmb-colombo-bandaranaike-international-apt-colombo-airport/1ef266df-ef5c-65b6-9127-06bb2780ed98)

- City: Colombo, Sri Lanka
- ICAO: VCBI
- Timezone: Asia/Colombo
- Coordinates: 7.180000, 79.880000
- Elevation: 30 ft

### [St Mary's Airport (KSM)](https://www.flightduration.online/airport/ksm-st-marys-st-marys-airport/1ef266df-8810-6b14-99ba-06bb2780ed98)

- City: St Mary'S, United States
- ICAO: PASM
- Timezone: America/Nome
- Coordinates: 62.060000, -163.300000
- Elevation: 314 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 17:05 in Colombo, it's 03:35 in St Mary'S.
With a 13.5-hour time difference, expect significant jet lag.

## Related

- [Bandaranaike International Apt Colombo Airport (CMB)](https://www.flightduration.online/airport/cmb-colombo-bandaranaike-international-apt-colombo-airport/1ef266df-ef5c-65b6-9127-06bb2780ed98)
- [St Mary's Airport (KSM)](https://www.flightduration.online/airport/ksm-st-marys-st-marys-airport/1ef266df-8810-6b14-99ba-06bb2780ed98)
- [Flight duration calculator](/#calculator)