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ONT to DCI: distance & flight time
Ontario (Ontario International Airport) → Decimomannu (Decimomannu Air Base)
6,324 mi
10,177 km · 5,495 nm
12h 52m
estimated nonstop flight time
+9h
time difference · heading northeast
See live ONT→DCI fares Phone-only fares on this route — call free
Flight time details
6,324 miles nonstop takes roughly 12h 52m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- DCI — Decimomannu Air Base · Decimomannu, Italy
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 DCI
- CAG · Cagliari Elmas Airport8 mi away
- FNU · Oristano-Fenosu Airport41 mi away
- TTB · Tortolì Airport54 mi away
- AHO · Alghero-Fertilia Airport95 mi away
Frequently asked questions
How far is ONT from DCI?
The flight distance from Ontario (ONT) to Decimomannu (DCI) 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 ONT to DCI?
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 Ontario and Decimomannu?
Decimomannu is 9 hours ahead of Ontario.
What is the cheapest way to fly from ONT to DCI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–DCI that never appear on search engines, with no booking fees.