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RML to ONO: distance & flight time
Colombo (Colombo Ratmalana Airport) → Ontario (Ontario Municipal Airport)
8,769 mi
14,112 km · 7,620 nm
17h 40m
estimated nonstop flight time
-11.5h
time difference · heading north
See live RML→ONO fares Phone-only fares on this route — call free
Flight time details
8,769 miles nonstop takes roughly 17h 40m 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
- ONO — Ontario Municipal Airport · Ontario, 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 ONO
- BOI · Boise Air Terminal/Gowen Field50 mi away
- BKE · Baker City Municipal Airport69 mi away
- MYL · McCall Municipal Airport75 mi away
- MUO · Mountain Home Air Force Base88 mi away
Frequently asked questions
How far is RML from ONO?
The flight distance from Colombo (RML) to Ontario (ONO) is 8,769 miles (14,112 km, 7,620 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to ONO?
A nonstop flight takes about 17h 40m 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 Ontario?
Ontario is 11.5 hours behind Colombo.
What is the cheapest way to fly from RML to ONO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–ONO that never appear on search engines, with no booking fees.