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ONT to YCM: distance & flight time
Ontario (Ontario International Airport) → Saint Catherines (Niagara District Airport)
2,147 mi
3,456 km · 1,866 nm
4h 41m
estimated nonstop flight time
+3h
time difference · heading northeast
See live ONT→YCM fares Phone-only fares on this route — call free
Flight time details
2,147 miles nonstop takes roughly 4h 41m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- YCM — Niagara District Airport · Saint Catherines, 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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
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
Frequently asked questions
How far is ONT from YCM?
The flight distance from Ontario (ONT) to Saint Catherines (YCM) 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 ONT to YCM?
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 Ontario and Saint Catherines?
Saint Catherines is 3 hours ahead of Ontario.
What is the cheapest way to fly from ONT to YCM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–YCM that never appear on search engines, with no booking fees.