Distance Calculator
Tehran, Iran → Delhi, India
Distance Result
1,581 miles
2,544 km | 1,373 nautical miles
Straight-line (great circle) distance
The distance from Tehran to Delhi is about 2,544 km (1,581 miles) as the crow flies, or 1,373 nautical miles.
This is the great-circle distance — the shortest path over the surface of the Earth, computed with the haversine formula from the coordinates of both cities. Road or rail distance is always longer, and the gap widens with every mountain range or coastline in between.
Putting the number to use
- At a cruising speed near 800 km/h the airborne time is about 3.2 hours; add 30-45 minutes for taxi, climb and descent.
- Time zone difference changes the arrival time on your ticket far more than the flying time does.
- For shipping, use road or sea distance instead — great-circle figures understate real routes.
Driving
≈ 1d 4h
Estimated at 90 km/h average. Actual road distance is typically 15-30% longer than the straight line.
Flying
≈ 3h 45min
Estimated at 850 km/h cruising speed plus takeoff and landing time.
Route Map
Distances from Tehran to Nearby Cities
Frequently Asked Questions
The straight-line (great circle) distance between Tehran and Delhi is 1,581 miles (2,544 kilometers).
A direct flight from Tehran to Delhi takes approximately 3h 45min, based on an average cruising speed of 850 km/h plus takeoff and landing time.
Driving from Tehran to Delhi takes approximately 1d 4h, assuming an average speed of 90 km/h. Actual time depends on the route and traffic.