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NCO to ONT: distance & flight time
North Kingstown (Quonset State Airport) → Ontario (Ontario International Airport)
2,543 mi
4,092 km · 2,210 nm
5h 27m
estimated nonstop flight time
-3h
time difference · heading west
See live NCO→ONT fares Phone-only fares on this route — call free
Flight time details
2,543 miles nonstop takes roughly 5h 27m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- NCO — Quonset State Airport · North Kingstown, United States
- ONT — Ontario International 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 NCO
Near ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Frequently asked questions
How far is NCO from ONT?
The flight distance from North Kingstown (NCO) to Ontario (ONT) is 2,543 miles (4,092 km, 2,210 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from NCO to ONT?
A nonstop flight takes about 5h 27m 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 North Kingstown and Ontario?
Ontario is 3 hours behind North Kingstown.
What is the cheapest way to fly from NCO to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on NCO–ONT that never appear on search engines, with no booking fees.