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APA to RML: distance & flight time
Denver (Centennial Airport) → Colombo (Colombo Ratmalana Airport)
9,217 mi
14,834 km · 8,009 nm
18h 32m
estimated nonstop flight time
+11.5h
time difference · heading north
See live APA→RML fares Phone-only fares on this route — call free
Flight time details
9,217 miles nonstop takes roughly 18h 32m 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 gain when reading arrival times on your ticket.
The two airports
- APA — Centennial Airport · Denver, 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 APA
- DEN · Denver International Airport22 mi away
- BFK · Buckley Air Force Base10 mi away
- BJC · Rocky Mountain Metropolitan Airport27 mi away
- WBU · Boulder Municipal Airport38 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 APA from RML?
The flight distance from Denver (APA) to Colombo (RML) is 9,217 miles (14,834 km, 8,009 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from APA to RML?
A nonstop flight takes about 18h 32m 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 Denver and Colombo?
Colombo is 11.5 hours ahead of Denver.
What is the cheapest way to fly from APA to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on APA–RML that never appear on search engines, with no booking fees.