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RML to CPR: distance & flight time
Colombo (Colombo Ratmalana Airport) → Casper (Casper-Natrona County International Airport)
8,978 mi
14,448 km · 7,801 nm
18h 4m
estimated nonstop flight time
-11.5h
time difference · heading north
See live RML→CPR fares Phone-only fares on this route — call free
Flight time details
8,978 miles nonstop takes roughly 18h 4m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.5-hour time set-back when reading arrival times on your ticket.
The two airports
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
- CPR — Casper-Natrona County International Airport · Casper, United States
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 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
Near CPR
- RWL · Rawlins Municipal Airport/Harvey Field85 mi away
- RIW · Riverton Regional Airport101 mi away
- SAA · Shively Field103 mi away
- WRL · Worland Municipal Airport104 mi away
Frequently asked questions
How far is RML from CPR?
The flight distance from Colombo (RML) to Casper (CPR) is 8,978 miles (14,448 km, 7,801 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to CPR?
A nonstop flight takes about 18h 4m 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 Colombo and Casper?
Casper is 11.5 hours behind Colombo.
What is the cheapest way to fly from RML to CPR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–CPR that never appear on search engines, with no booking fees.