Distance from Sofia to Istanbul
The straight-line distance from Sofia, Bulgaria to Istanbul, Turkey is 505 km (314 miles).Istanbul is ESE of Sofia.
Distance (km)
505
straight line
Distance (miles)
314
straight line
Flight Time
1 hr 6 min
estimated direct
Direction
ESE
110° bearing
Transport Comparison: Sofia to Istanbul
| Mode | Estimated Time | Distance | Notes |
|---|---|---|---|
| Flight | 1 hr 6 min | 505 km | Direct flight at 800 km/h avg cruise speed |
| Driving | 8 hr 12 min | ~657 km | Avg 80 km/h, +30% route factor |
| Train | 5 hr 6 min | ~606 km | Estimated, 120 km/h avg (where available) |
All times are estimates based on straight-line distance. Actual travel times vary by route, stops, and conditions.
Sofia to Istanbul: Key Details
| From | Sofia, Bulgaria |
| To | Istanbul, Turkey |
| Straight-line Distance | 505 km (314 miles) |
| Bearing | 110° (ESE) |
| Coordinates (Sofia) | 42.6977°, 23.3219° |
| Coordinates (Istanbul) | 41.0082°, 28.9784° |
Country Profiles
Frequently Asked Questions
How far is Sofia from Istanbul?
The straight-line (as the crow flies) distance from Sofia to Istanbul is 505 km (314 miles). Istanbul is ESE of Sofia.
How long is the flight from Sofia to Istanbul?
A direct flight from Sofia to Istanbul takes approximately 1 hr 6 min, based on an average cruising speed of 800 km/h plus time for takeoff and landing.
How long does it take to drive from Sofia to Istanbul?
Driving from Sofia to Istanbul takes approximately 8 hr 12 min. This estimate assumes an average speed of 80 km/h with a 30% route factor for indirect roads. Actual time will vary based on road conditions, traffic, and the specific route taken.
What direction is Istanbul from Sofia?
Istanbul is ESE (110 degrees) from Sofia.
What is the distance from Istanbul to Sofia?
The distance from Istanbul to Sofia is the same: 505 km (314 miles). Distance between two points is the same in either direction.
Other Distance Calculations
Distances calculated using the Haversine formula (great-circle distance). Travel time estimates are approximate.
Coordinates sourced from public geographic databases.