Need help booking?
Unpublished phone-only deals available
ONT to IOR: distance & flight time
Ontario (Ontario International Airport) → Inis Mor (Inishmore Aerodrome)
5,035 mi
8,102 km · 4,375 nm
10h 20m
estimated nonstop flight time
+8h
time difference · heading northeast
See live ONT→IOR fares Phone-only fares on this route — call free
Flight time details
5,035 miles nonstop takes roughly 10h 20m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- IOR — Inishmore Aerodrome · Inis Mor, Ireland
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 IOR
- IIA · Inishmaan Aerodrome4 mi away
- INQ · Inisheer Aerodrome7 mi away
- NNR · Connemara Regional Airport11 mi away
- GWY · Galway Airport32 mi away
Frequently asked questions
How far is ONT from IOR?
The flight distance from Ontario (ONT) to Inis Mor (IOR) is 5,035 miles (8,102 km, 4,375 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to IOR?
A nonstop flight takes about 10h 20m 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 Inis Mor?
Inis Mor is 8 hours ahead of Ontario.
What is the cheapest way to fly from ONT to IOR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–IOR that never appear on search engines, with no booking fees.