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ZEM to ONT: distance & flight time
Eastmain River (Eastmain River Airport) → Ontario (Ontario International Airport)
2,295 mi
3,694 km · 1,994 nm
4h 58m
estimated nonstop flight time
-3h
time difference · heading west
See live ZEM→ONT fares Phone-only fares on this route — call free
Flight time details
2,295 miles nonstop takes roughly 4h 58m 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
- ZEM — Eastmain River Airport · Eastmain River, 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 ZEM
- YKQ · Waskaganish Airport53 mi away
- YNC · Wemindji Airport56 mi away
- YGL · La Grande Rivière Airport102 mi away
- YNS · Nemiscau Airport108 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 ZEM from ONT?
The flight distance from Eastmain River (ZEM) to Ontario (ONT) is 2,295 miles (3,694 km, 1,994 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ZEM to ONT?
A nonstop flight takes about 4h 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 Eastmain River and Ontario?
Ontario is 3 hours behind Eastmain River.
What is the cheapest way to fly from ZEM to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ZEM–ONT that never appear on search engines, with no booking fees.