# Distance from Colorado Springs (COS) to Sofia (SOF)

> 9,551 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,551 km / 5,935 mi / 5,157 nm
- **Estimated flight time**: 12h
- **Heading**: 35° (northeast)
- **Return heading**: 322° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +9h (When it's 18:00 in Colorado Springs, it's 03:00 in Sofia)
- **Elevation difference**: 4,445 ft (SOF is lower than COS)

## Airports

### [City Of Colorado Springs Municipal Airport (COS)](https://www.flightduration.online/airport/cos-colorado-springs-city-of-colorado-springs-municipal-airport/1ef266df-14b6-6524-8bd7-06bb2780ed98)

- City: Colorado Springs, United States
- ICAO: KCOS
- Timezone: America/Denver
- Coordinates: 38.810000, -104.700000
- Elevation: 6,187 ft

### [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)

- City: Sofia, Bulgaria
- ICAO: LBSF
- Timezone: Europe/Sofia
- Coordinates: 42.700000, 23.410000
- Elevation: 1,742 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 18:00 in Colorado Springs, it's 03:00 in Sofia.
With a 9-hour time difference, expect significant jet lag.

## Related

- [City Of Colorado Springs Municipal Airport (COS)](https://www.flightduration.online/airport/cos-colorado-springs-city-of-colorado-springs-municipal-airport/1ef266df-14b6-6524-8bd7-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)