# Distance from Colombo (CMB) to St. Mary's (ISC)

> 9,124 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,124 km / 5,669 mi / 4,926 nm
- **Estimated flight time**: 12h
- **Heading**: 320° (northwest)
- **Return heading**: 88° (east)
- **Classification**: Ultra-long-haul
- **Type**: International (Sri Lanka) → United Kingdom
- **Intercontinental**: Asia → Europe
- **Time difference**: -4.5h (When it's 13:05 in Colombo, it's 08:35 in St. Mary's)
- **Elevation difference**: 86 ft (ISC 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 (ISC)](https://www.flightduration.online/airport/isc-st-marys-st-marys-airport/1ef266de-c3dc-66c6-857e-06bb2780ed98)

- City: St. Mary's, United Kingdom
- ICAO: EGHE
- Timezone: Europe/London
- Coordinates: 49.910000, -6.290000
- Elevation: 116 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 13:05 in Colombo, it's 08:35 in St. Mary's.
The 4.5-hour time difference may cause some 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 (ISC)](https://www.flightduration.online/airport/isc-st-marys-st-marys-airport/1ef266de-c3dc-66c6-857e-06bb2780ed98)
- [Flight duration calculator](/#calculator)