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DCM to ONT: distance & flight time
Castres (Castres-Mazamet Airport) → Ontario (Ontario International Airport)
5,875 mi
9,455 km · 5,105 nm
11h 59m
estimated nonstop flight time
-9h
time difference · heading northwest
See live DCM→ONT fares Phone-only fares on this route — call free
Flight time details
5,875 miles nonstop takes roughly 11h 59m 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
- DCM — Castres-Mazamet Airport · Castres, France
- 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 DCM
- CCF · Carcassonne Airport24 mi away
- LBI · Albi-Le Séquestre Airport26 mi away
- TLS · Toulouse-Blagnac Airport47 mi away
- XMW · Montauban Airport56 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 DCM from ONT?
The flight distance from Castres (DCM) to Ontario (ONT) is 5,875 miles (9,455 km, 5,105 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DCM to ONT?
A nonstop flight takes about 11h 59m 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 Castres and Ontario?
Ontario is 9 hours behind Castres.
What is the cheapest way to fly from DCM to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DCM–ONT that never appear on search engines, with no booking fees.