# Distance from Phoenix (PHX) to Silistra (SLS)

> 10,459 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,459 km / 6,499 mi / 5,647 nm
- **Estimated flight time**: 13h
- **Heading**: 28° (north northeast)
- **Return heading**: 327° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +10h (When it's 07:50 in Phoenix, it's 17:50 in Silistra)
- **Elevation difference**: 784 ft (SLS is lower than PHX)

## Airports

### [Phoenix Sky Harbor International Airport (PHX)](https://www.flightduration.online/airport/phx-phoenix-phoenix-sky-harbor-international-airport/1ef266df-32a8-6c76-a19e-06bb2780ed98)

- City: Phoenix, United States
- ICAO: KPHX
- Timezone: America/Phoenix
- Coordinates: 33.430000, -112.010000
- Elevation: 1,135 ft

### [Silistra Polkovnik Lambrinovo Airfield (SLS)](https://www.flightduration.online/airport/sls-silistra-silistra-polkovnik-lambrinovo-airfield/1ef266df-4371-6c24-944f-06bb2780ed98)

- City: Silistra, Bulgaria
- ICAO: LBSS
- Timezone: Europe/Sofia
- Coordinates: 44.060000, 27.180000
- Elevation: 351 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 07:50 in Phoenix, it's 17:50 in Silistra.
With a 10-hour time difference, expect significant jet lag.

## Related

- [Phoenix Sky Harbor International Airport (PHX)](https://www.flightduration.online/airport/phx-phoenix-phoenix-sky-harbor-international-airport/1ef266df-32a8-6c76-a19e-06bb2780ed98)
- [Silistra Polkovnik Lambrinovo Airfield (SLS)](https://www.flightduration.online/airport/sls-silistra-silistra-polkovnik-lambrinovo-airfield/1ef266df-4371-6c24-944f-06bb2780ed98)
- [Flight duration calculator](/#calculator)