Estimated travel durations
The straight-line distance from Delhi to Islamabad is 689 kilometers (428 miles). This is the crow-flies distance calculated using the Haversine formula.
A direct flight from Delhi to Islamabad takes approximately 2h. This is an estimate based on an average cruising speed of 800 km/h and does not include boarding, taxiing or layover time.
Driving from Delhi to Islamabad would take approximately 7h at an average speed of 85 km/h. The actual driving time may vary depending on road conditions, traffic and border crossings.
The distance from Delhi to Islamabad is 428 miles (689 km) as the crow flies.