# Distance from Greeley (GXY) to Sofia (SOF)

> 9,400 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,400 km / 5,841 mi / 5,076 nm
- **Estimated flight time**: 12h
- **Heading**: 36° (northeast)
- **Return heading**: 323° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +9h (When it's 03:56 in Greeley, it's 12:56 in Sofia)
- **Elevation difference**: 2,955 ft (SOF is lower than GXY)

## Airports

### [Greeley-Weld County Airport (GXY)](https://www.flightduration.online/airport/gxy-greeley-greeley-weld-county-airport/1ef266df-1f69-655c-b96e-06bb2780ed98)

- City: Greeley, United States
- ICAO: KGXY
- Timezone: America/Denver
- Coordinates: 40.440000, -104.630000
- Elevation: 4,697 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 03:56 in Greeley, it's 12:56 in Sofia.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Greeley-Weld County Airport (GXY)](https://www.flightduration.online/airport/gxy-greeley-greeley-weld-county-airport/1ef266df-1f69-655c-b96e-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)