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CUN to ONT: distance & flight time
Cancun (Cancún International Airport) → Ontario (Ontario International Airport)
2,075 mi
3,339 km · 1,803 nm
4h 32m
estimated nonstop flight time
-2h
time difference · heading northwest
See live CUN→ONT fares Phone-only fares on this route — call free
Flight time details
2,075 miles nonstop takes roughly 4h 32m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- CUN — Cancún International Airport · Cancun, Mexico
- 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 CUN
- ISJ · Isla Mujeres Airport17 mi away
- CZM · Cozumel International Airport36 mi away
- CZA · Chichen Itza International Airport105 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 CUN from ONT?
The flight distance from Cancun (CUN) to Ontario (ONT) is 2,075 miles (3,339 km, 1,803 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CUN to ONT?
A nonstop flight takes about 4h 32m 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 Cancun and Ontario?
Ontario is 2 hours behind Cancun.
What is the cheapest way to fly from CUN to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CUN–ONT that never appear on search engines, with no booking fees.