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ONT to YSP: distance & flight time
Ontario (Ontario International Airport) → Marathon (Marathon Airport)
1,892 mi
3,044 km · 1,644 nm
4h 11m
estimated nonstop flight time
+3h
time difference · heading northeast
See live ONT→YSP fares Phone-only fares on this route — call free
Flight time details
1,892 miles nonstop takes roughly 4h 11m 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
- YSP — Marathon Airport · Marathon, 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 YSP
- YMG · Manitouwadge Airport32 mi away
- YGQ · Geraldton Greenstone Regional Airport76 mi away
- YHN · Hornepayne Municipal Airport78 mi away
- YXZ · Wawa Airport90 mi away
Frequently asked questions
How far is ONT from YSP?
The flight distance from Ontario (ONT) to Marathon (YSP) is 1,892 miles (3,044 km, 1,644 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to YSP?
A nonstop flight takes about 4h 11m 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 Marathon?
Marathon is 3 hours ahead of Ontario.
What is the cheapest way to fly from ONT to YSP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–YSP that never appear on search engines, with no booking fees.