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DCI to ONT: distance & flight time
Decimomannu (Decimomannu Air Base) → Ontario (Ontario International Airport)
6,324 mi
10,177 km · 5,495 nm
12h 52m
estimated nonstop flight time
-9h
time difference · heading northwest
See live DCI→ONT fares Phone-only fares on this route — call free
Flight time details
6,324 miles nonstop takes roughly 12h 52m 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
- DCI — Decimomannu Air Base · Decimomannu, 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 DCI
- CAG · Cagliari Elmas Airport8 mi away
- FNU · Oristano-Fenosu Airport41 mi away
- TTB · Tortolì Airport54 mi away
- AHO · Alghero-Fertilia Airport95 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 DCI from ONT?
The flight distance from Decimomannu (DCI) to Ontario (ONT) is 6,324 miles (10,177 km, 5,495 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DCI to ONT?
A nonstop flight takes about 12h 52m 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 Decimomannu and Ontario?
Ontario is 9 hours behind Decimomannu.
What is the cheapest way to fly from DCI to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DCI–ONT that never appear on search engines, with no booking fees.