# Distance from Cheyenne (CYS) to Sofia (SOF)

> 9,344 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,344 km / 5,806 mi / 5,045 nm
- **Estimated flight time**: 12h
- **Heading**: 35° (northeast)
- **Return heading**: 324° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +9h (When it's 21:39 in Cheyenne, it's 06:39 in Sofia)
- **Elevation difference**: 4,418 ft (SOF is lower than CYS)

## Airports

### [Cheyenne Regional/Jerry Olson Field (CYS)](https://flightduration.online/airport/cys-cheyenne-cheyenne-regionaljerry-olson-field/1ef266df-15b7-6d38-88b6-06bb2780ed98)

- City: Cheyenne, United States
- ICAO: KCYS
- Timezone: America/Denver
- Coordinates: 41.160000, -104.810000
- Elevation: 6,160 ft

### [Sofia Airport (SOF)](https://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 21:39 in Cheyenne, it's 06:39 in Sofia.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Cheyenne Regional/Jerry Olson Field (CYS)](https://flightduration.online/airport/cys-cheyenne-cheyenne-regionaljerry-olson-field/1ef266df-15b7-6d38-88b6-06bb2780ed98)
- [Sofia Airport (SOF)](https://flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)