# Distance from Haiphong (HPH) to Sofia (SOF)

> 7,925 km · estimated flight time 10h · Long-haul route.

## Summary

- **Distance**: 7,925 km / 4,924 mi / 4,279 nm
- **Estimated flight time**: 10h
- **Heading**: 310° (northwest)
- **Return heading**: 79° (east northeast)
- **Classification**: Long-haul
- **Type**: International (Vietnam) → Bulgaria
- **Intercontinental**: Asia → Europe
- **Time difference**: -4h (When it's 09:54 in Haiphong, it's 05:54 in Sofia)
- **Elevation difference**: 1,736 ft (SOF is higher than HPH)

## Airports

### [Cat Bi International Airport (HPH)](https://www.flightduration.online/airport/hph-haiphong-cat-bi-international-airport/1ef266df-f5ff-699a-88e2-06bb2780ed98)

- City: Haiphong, Vietnam
- ICAO: VVCI
- Timezone: Asia/Ho_Chi_Minh
- Coordinates: 20.820000, 106.720000
- Elevation: 6 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 a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

Time-zone information: When it's 09:54 in Haiphong, it's 05:54 in Sofia.
The 4-hour time difference may cause some jet lag.

## Related

- [Cat Bi International Airport (HPH)](https://www.flightduration.online/airport/hph-haiphong-cat-bi-international-airport/1ef266df-f5ff-699a-88e2-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)