# Distance from Portland (HIO) to Sofia (SOF)

> 9,654 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,654 km / 5,999 mi / 5,213 nm
- **Estimated flight time**: 12h
- **Heading**: 24° (north northeast)
- **Return heading**: 337° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +10h (When it's 23:36 in Portland, it's 09:36 in Sofia)
- **Elevation difference**: 1,534 ft (SOF is higher than HIO)

## Airports

### [Portland-Hillsboro Airport (HIO)](https://www.flightduration.online/airport/hio-portland-portland-hillsboro-airport/1ef266df-20b3-64b2-b8db-06bb2780ed98)

- City: Portland, United States
- ICAO: KHIO
- Timezone: America/Los_Angeles
- Coordinates: 45.540000, -122.950000
- Elevation: 208 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 23:36 in Portland, it's 09:36 in Sofia.
With a 10-hour time difference, expect significant jet lag.

## Related

- [Portland-Hillsboro Airport (HIO)](https://www.flightduration.online/airport/hio-portland-portland-hillsboro-airport/1ef266df-20b3-64b2-b8db-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)