Need help booking?
Unpublished phone-only deals available
LUK to RML: distance & flight time
Cincinnati (Cincinnati Municipal Airport Lunken Field) → Colombo (Colombo Ratmalana Airport)
9,108 mi
14,658 km · 7,915 nm
18h 20m
estimated nonstop flight time
+9.5h
time difference · heading north
See live LUK→RML fares Phone-only fares on this route — call free
Flight time details
9,108 miles nonstop takes roughly 18h 20m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9.5-hour time gain when reading arrival times on your ticket.
The two airports
- LUK — Cincinnati Municipal Airport Lunken Field · Cincinnati, United States
- 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 LUK
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 LUK from RML?
The flight distance from Cincinnati (LUK) to Colombo (RML) is 9,108 miles (14,658 km, 7,915 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LUK to RML?
A nonstop flight takes about 18h 20m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from LUK to RML?
Nonstop service on LUK–RML depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 18h 20m nonstop estimate.
What is the time difference between Cincinnati and Colombo?
Colombo is 9.5 hours ahead of Cincinnati.
What is the cheapest way to fly from LUK to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LUK–RML that never appear on search engines, with no booking fees.
Why are some LUK to RML fares phone-only?
Consolidator contracts let us sell certain LUK–RML tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.