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ISB to RML: distance & flight time
Islamabad (New Islamabad International Airport) → Colombo (Colombo Ratmalana Airport)
1,902 mi
3,060 km · 1,652 nm
4h 12m
estimated nonstop flight time
—
time difference · heading south
See live ISB→RML fares Phone-only fares on this route — call free
Flight time details
1,902 miles nonstop takes roughly 4h 12m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ISB — New Islamabad International Airport · Islamabad, Pakistan
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ISB
- ATG · Minhas Air Base34 mi away
- XJM · Mangla Airport58 mi away
- RAZ · Rawalakot Airport58 mi away
- MFG · Muzaffarabad Airport66 mi away
Near RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 mi away
Frequently asked questions
How far is ISB from RML?
The flight distance from Islamabad (ISB) to Colombo (RML) is 1,902 miles (3,060 km, 1,652 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISB to RML?
A nonstop flight takes about 4h 12m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the cheapest way to fly from ISB to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISB–RML that never appear on search engines, with no booking fees.