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FCO to ONT: distance & flight time
Rome (Leonardo da Vinci–Fiumicino Airport) → Ontario (Ontario International Airport)
6,307 mi
10,150 km · 5,481 nm
12h 50m
estimated nonstop flight time
-9h
time difference · heading northwest
See live FCO→ONT fares Phone-only fares on this route — call free
Flight time details
6,307 miles nonstop takes roughly 12h 50m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- FCO — Leonardo da Vinci–Fiumicino Airport · Rome, Italy
- 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 FCO
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 FCO from ONT?
The flight distance from Rome (FCO) to Ontario (ONT) is 6,307 miles (10,150 km, 5,481 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FCO to ONT?
A nonstop flight takes about 12h 50m 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 Rome and Ontario?
Ontario is 9 hours behind Rome.
What is the cheapest way to fly from FCO to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FCO–ONT that never appear on search engines, with no booking fees.