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IST to RML: distance & flight time
Istanbul (Istanbul Airport) → Colombo (Colombo Ratmalana Airport)
3,929 mi
6,323 km · 3,414 nm
8h 10m
estimated nonstop flight time
+2.5h
time difference · heading southeast
See live IST→RML fares Phone-only fares on this route — call free
Flight time details
3,929 miles nonstop takes roughly 8h 10m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2.5-hour time gain when reading arrival times on your ticket.
The two airports
- IST — Istanbul Airport · Istanbul, Turkey
- 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 IST
- ISL · Atatürk International Airport21 mi away
- SAW · Sabiha Gökçen International Airport39 mi away
- TEQ · Tekirdağ Çorlu Airport44 mi away
- BTZ · Bursa Airport73 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 IST from RML?
The flight distance from Istanbul (IST) to Colombo (RML) is 3,929 miles (6,323 km, 3,414 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IST to RML?
A nonstop flight takes about 8h 10m 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 time difference between Istanbul and Colombo?
Colombo is 2.5 hours ahead of Istanbul.
What is the cheapest way to fly from IST to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IST–RML that never appear on search engines, with no booking fees.