# Distance from Idaho Falls (IDA) to Sofia (SOF)

> 9,453 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,453 km / 5,874 mi / 5,104 nm
- **Estimated flight time**: 12h
- **Heading**: 31° (north northeast)
- **Return heading**: 329° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +9h (When it's 02:45 in Idaho Falls, it's 11:45 in Sofia)
- **Elevation difference**: 3,002 ft (SOF is lower than IDA)

## Airports

### [Idaho Falls Regional Airport (IDA)](https://www.flightduration.online/airport/ida-idaho-falls-idaho-falls-regional-airport/1ef266df-22f0-6be4-9bbf-06bb2780ed98)

- City: Idaho Falls, United States
- ICAO: KIDA
- Timezone: America/Boise
- Coordinates: 43.510000, -112.070000
- Elevation: 4,744 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 02:45 in Idaho Falls, it's 11:45 in Sofia.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Idaho Falls Regional Airport (IDA)](https://www.flightduration.online/airport/ida-idaho-falls-idaho-falls-regional-airport/1ef266df-22f0-6be4-9bbf-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)