London to Karachi
8h 18m The flight from London Heathrow Airport (LHR) to Jinnah International Airport (KHI) covers 6,339 km (3,939 miles) and takes approximately 8h 18m gate to gate for a typical jet.
The route heads east on an initial great-circle bearing of 91°, passing near 43.2° N, 40.4° E at its midpoint.
The route
The great-circle path — the shortest line between the two airports across the curve of the earth. On a flat map it looks bent; on a globe it is straight.
Flight time at different cruise speeds
Aircraft type, winds and routing all move the real number. This is the same distance flown at different speeds, plus the 25-minute ground and climb allowance.
| Typical of | Cruise speed | Airborne | Gate to gate |
|---|---|---|---|
| Turboprop / regional | 550 km/h | 11h 31m | 11h 57m |
| Narrowbody jet (A320, 737) | 780 km/h | 8h 08m | 8h 33m |
| Widebody jet (777, 787, A350) | 900 km/h | 7h 03m | 7h 28m |
| Private jet (Gulfstream) | 850 km/h | 7h 27m | 7h 53m |
Headwinds on an eastbound long-haul routinely add 30–60 minutes; the same route westbound can be quicker. Airlines publish schedules with padding built in.
Both airports
| LHR | KHI | |
|---|---|---|
| Airport | London Heathrow Airport | Jinnah International Airport |
| City | London | Karachi |
| Country | United Kingdom | Pakistan |
| ICAO | EGLL | OPKC |
| Coordinates | 51.4707, -0.4599 | 24.9065, 67.1608 |
| Elevation | 83 ft | 100 ft |
Questions
How long is the flight from London to Karachi?
A non-stop flight from London (LHR) to Karachi (KHI) takes about 8h 18m. The great-circle distance is 6,339 km (3,939 miles, 3,423 nautical miles), flying east on an initial bearing of 91°.
How far is London from Karachi?
6,339 kilometres in a straight line over the earth's surface — 3,939 miles or 3,423 nautical miles. Actual flown distance is usually 2–5% longer because aircraft follow airways, avoid weather and route around restricted airspace.
Is there a non-stop flight between LHR and KHI?
This page calculates the direct-line time and distance; it does not track airline schedules. At 6,339 km the route is comfortably within range of a non-stop service if an airline chooses to fly it. Check an airline or booking site for what is actually scheduled.
What should I expect on a 8h 18m flight?
Anything past six hours is a long-haul flight: expect at least one meal service, a significant time-zone shift, and enough sitting that circulation and hydration start to matter. Cabin altitude, dry air and disrupted sleep do more damage to a training routine than the flight itself.
Other routes from London
Airport coordinates from OurAirports (public domain). Distance is a great-circle calculation; flight time uses the model described on the method page. Flight times are great-circle estimates for planning only — always check the airline's published schedule.