Need help booking?
Unpublished phone-only deals available
ONT to ISM: distance & flight time
Ontario (Ontario International Airport) → Kissimmee (Kissimmee Gateway Airport)
2,163 mi
3,481 km · 1,880 nm
4h 42m
estimated nonstop flight time
+3h
time difference · heading east
See live ONT→ISM fares Phone-only fares on this route — call free
Flight time details
2,163 miles nonstop takes roughly 4h 42m gate to gate, flying east. 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
- ISM — Kissimmee Gateway Airport · Kissimmee, 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 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 ISM
- MCO · Orlando International Airport12 mi away
- ORL · Orlando Executive Airport19 mi away
- GIF · Winter Haven Regional Airport - Gilbert Field25 mi away
- TPA · Tampa International Airport70 mi away
Frequently asked questions
How far is ONT from ISM?
The flight distance from Ontario (ONT) to Kissimmee (ISM) is 2,163 miles (3,481 km, 1,880 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to ISM?
A nonstop flight takes about 4h 42m 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 Kissimmee?
Kissimmee is 3 hours ahead of Ontario.
What is the cheapest way to fly from ONT to ISM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–ISM that never appear on search engines, with no booking fees.