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RML to HLN: distance & flight time
Colombo (Colombo Ratmalana Airport) → Helena (Helena Regional Airport)
8,674 mi
13,959 km · 7,537 nm
17h 28m
estimated nonstop flight time
-11.5h
time difference · heading north
See live RML→HLN fares Phone-only fares on this route — call free
Flight time details
8,674 miles nonstop takes roughly 17h 28m 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
- HLN — Helena Regional Airport · Helena, 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 HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 mi away
Frequently asked questions
How far is RML from HLN?
The flight distance from Colombo (RML) to Helena (HLN) is 8,674 miles (13,959 km, 7,537 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to HLN?
A nonstop flight takes about 17h 28m 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 Helena?
Helena is 11.5 hours behind Colombo.
What is the cheapest way to fly from RML to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–HLN that never appear on search engines, with no booking fees.