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YSJ to ONT: distance & flight time
St. John (Saint John Airport) → Ontario (Ontario International Airport)
2,806 mi
4,516 km · 2,438 nm
5h 58m
estimated nonstop flight time
-4h
time difference · heading west
See live YSJ→ONT fares Phone-only fares on this route — call free
Flight time details
2,806 miles nonstop takes roughly 5h 58m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time set-back when reading arrival times on your ticket.
The two airports
- YSJ — Saint John Airport · St. John, 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 YSJ
- YFC · Fredericton Airport49 mi away
- YZX · CFB Greenwood53 mi away
- YDG · Digby / Annapolis Regional Airport53 mi away
- YQM · Greater Moncton International Airport80 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 YSJ from ONT?
The flight distance from St. John (YSJ) to Ontario (ONT) is 2,806 miles (4,516 km, 2,438 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YSJ to ONT?
A nonstop flight takes about 5h 58m 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 St. John and Ontario?
Ontario is 4 hours behind St. John.
What is the cheapest way to fly from YSJ to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YSJ–ONT that never appear on search engines, with no booking fees.