Part of the data ring
FlyTime
ISB → IST

Attock to Istanbul

5h 19mgate to gate

The flight from Islamabad International Airport (ISB) to İstanbul Airport (IST) covers 3,944 km (2,451 miles) and takes approximately 5h 19m gate to gate for a typical jet.

The route heads north-west on an initial great-circle bearing of 296°, passing near 39.5° N, 52.0° E at its midpoint.

Great-circle strip Plate ISB–IST
5h 19mGATE TO GATE1h 20m3h 59mISBAttockISTIstanbul296° NORTH-WEST2,130 NM09861,9722,9583,944 km

Bearing 296° north-west Midpoint 39.5° N, 52.0° E Model 805 km/h + 25 min

SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026

Flight time5h 19mestimated, gate to gate
Distance3,944km · 2,451 mi
Nautical2,130nautical miles
Direction296°north-west

How this is worked out

  1. Take both airports' published coordinates from OurAirports — nothing here is scraped from another flight site.
  2. Great-circle distance by haversine on a mean earth radius of 6,371.0088 km: 3,944 km.
  3. Airborne time = that distance ÷ 805 km/h, a representative jet cruise speed: 4h 54m.
  4. Add a flat 25 minutes for pushback, taxi, climb, descent and taxi-in — the reason a 400 km hop is never half an hour: 5h 19m gate to gate.
  5. Winds, aircraft type and airline schedule padding are not modelled. The cruise-speed table shows how much that assumption is worth.
3,944 km / 805 km/h = 4h 54m airborne
            + 25 min ground = 5h 19m gate to gate

The full model, and what it ignores →

SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026

The same route, plotted on a world grid

The strip above gives the route its length and its shape. This gives it a position: latitude and longitude only, no coastlines, because a hand-drawn coastline would be decoration pretending to be data. On a flat grid the shortest path looks bent; on a globe it is straight.

ISB IST

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 ofCruise speedAirborneGate to gate
Turboprop / regional550 km/h7h 10m7h 35m
Narrowbody jet (A320, 737)780 km/h5h 03m5h 29m
Widebody jet (777, 787, A350)900 km/h4h 23m4h 48m
Private jet (Gulfstream)850 km/h4h 38m5h 04m

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.

SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026

Both airports

ISBIST
AirportIslamabad International Airportİstanbul Airport
CityAttockIstanbul
CountryPakistanTurkey
ICAOOPISLTFM
Coordinates33.549, 72.825741.2749, 28.7321
Elevation1,761 ft325 ft

Every figure on this plate is geometry. The shape of the earth is knowable; the airline's schedule is not.

Questions this plate answers

How long is the flight from Attock to Istanbul?

A non-stop flight from Attock (ISB) to Istanbul (IST) takes about 5h 19m. The great-circle distance is 3,944 km (2,451 miles, 2,130 nautical miles), flying north-west on an initial bearing of 296°.

How far is Attock from Istanbul?

3,944 kilometres in a straight line over the earth's surface — 2,451 miles or 2,130 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 ISB and IST?

This page calculates the direct-line time and distance; it does not track airline schedules. At 3,944 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.

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.

See all 10 sites in this family, with what each one answers

Published by

Amit Sharma

Auckland real-estate agent and marketer. Builds free, sourced data tools.