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ZTH to ONT: distance & flight time
Zakynthos (Zakynthos International Airport "Dionysios Solomos") → Ontario (Ontario International Airport)
6,805 mi
10,952 km · 5,913 nm
13h 49m
estimated nonstop flight time
-10h
time difference · heading northwest
See live ZTH→ONT fares Phone-only fares on this route — call free
Flight time details
6,805 miles nonstop takes roughly 13h 49m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time set-back when reading arrival times on your ticket.
The two airports
- ZTH — Zakynthos International Airport "Dionysios Solomos" · Zakynthos, Greece
- 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 ZTH
- PYR · Andravida Air Base25 mi away
- EFL · Kefallinia Airport33 mi away
- GPA · Araxos Airport40 mi away
- AGQ · Agrinion Air Base64 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 ZTH from ONT?
The flight distance from Zakynthos (ZTH) to Ontario (ONT) is 6,805 miles (10,952 km, 5,913 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ZTH to ONT?
A nonstop flight takes about 13h 49m 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 Zakynthos and Ontario?
Ontario is 10 hours behind Zakynthos.
What is the cheapest way to fly from ZTH to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ZTH–ONT that never appear on search engines, with no booking fees.