Need help booking?
Unpublished phone-only deals available
RML to YSM: distance & flight time
Colombo (Colombo Ratmalana Airport) → Fort Smith (Fort Smith Airport)
7,773 mi
12,510 km · 6,755 nm
15h 42m
estimated nonstop flight time
-11.5h
time difference · heading north
See live RML→YSM fares Phone-only fares on this route — call free
Flight time details
7,773 miles nonstop takes roughly 15h 42m 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
- YSM — Fort Smith Airport · Fort Smith, Canada
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 YSM
- YPY · Fort Chipewyan Airport92 mi away
- YFR · Fort Resolution Airport99 mi away
- YBE · Uranium City Airport125 mi away
- YHY · Hay River / Merlyn Carter Airport142 mi away
Frequently asked questions
How far is RML from YSM?
The flight distance from Colombo (RML) to Fort Smith (YSM) is 7,773 miles (12,510 km, 6,755 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to YSM?
A nonstop flight takes about 15h 42m 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 Fort Smith?
Fort Smith is 11.5 hours behind Colombo.
What is the cheapest way to fly from RML to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–YSM that never appear on search engines, with no booking fees.