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ZHI to ONT: distance & flight time
Grenchen (Grenchen Airport) → Ontario (Ontario International Airport)
5,871 mi
9,448 km · 5,102 nm
11h 59m
estimated nonstop flight time
-9h
time difference · heading northwest
See live ZHI→ONT fares Phone-only fares on this route — call free
Flight time details
5,871 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
- ZHI — Grenchen Airport · Grenchen, Switzerland
- 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 ZHI
- BRN · Bern Belp Airport19 mi away
- BSL · EuroAirport Basel-Mulhouse-Freiburg Airport29 mi away
- QNC · Neuchatel Airport30 mi away
- BOR · Fontaine Airport38 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 ZHI from ONT?
The flight distance from Grenchen (ZHI) to Ontario (ONT) is 5,871 miles (9,448 km, 5,102 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ZHI 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.
Are there nonstop flights from ZHI to ONT?
Nonstop service on ZHI–ONT depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 11h 59m nonstop estimate.
What is the time difference between Grenchen and Ontario?
Ontario is 9 hours behind Grenchen.
What is the cheapest way to fly from ZHI to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ZHI–ONT that never appear on search engines, with no booking fees.
Why are some ZHI to ONT fares phone-only?
Consolidator contracts let us sell certain ZHI–ONT tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.