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YCM to ONT: distance & flight time
Saint Catherines (Niagara District Airport) → Ontario (Ontario International Airport)
2,147 mi
3,456 km · 1,866 nm
4h 41m
estimated nonstop flight time
-3h
time difference · heading west
See live YCM→ONT fares Phone-only fares on this route — call free
Flight time details
2,147 miles nonstop takes roughly 4h 41m 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
- YCM — Niagara District Airport · Saint Catherines, Canada
- 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 YCM
- YYZ · Lester B. Pearson International Airport41 mi away
- IAG · Niagara Falls International Airport13 mi away
- BUF · Buffalo Niagara International Airport28 mi away
- DU9 · Dunnville Airport31 mi away
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 YCM from ONT?
The flight distance from Saint Catherines (YCM) to Ontario (ONT) is 2,147 miles (3,456 km, 1,866 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YCM to ONT?
A nonstop flight takes about 4h 41m 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 Saint Catherines and Ontario?
Ontario is 3 hours behind Saint Catherines.
What is the cheapest way to fly from YCM to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YCM–ONT that never appear on search engines, with no booking fees.