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ONT to DUB: distance & flight time
Ontario (Ontario International Airport) → Dublin (Dublin Airport)
5,136 mi
8,265 km · 4,463 nm
10h 32m
estimated nonstop flight time
+8h
time difference · heading northeast
See live ONT→DUB fares Phone-only fares on this route — call free
Flight time details
5,136 miles nonstop takes roughly 10h 32m 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
- DUB — Dublin Airport · Dublin, 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 DUB
- VLY · Anglesey Airport73 mi away
- IOM · Isle of Man Airport81 mi away
- BHD · George Best Belfast City Airport84 mi away
- BFS · Belfast International Airport85 mi away
Frequently asked questions
How far is ONT from DUB?
The flight distance from Ontario (ONT) to Dublin (DUB) is 5,136 miles (8,265 km, 4,463 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to DUB?
A nonstop flight takes about 10h 32m 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 Dublin?
Dublin is 8 hours ahead of Ontario.
What is the cheapest way to fly from ONT to DUB?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–DUB that never appear on search engines, with no booking fees.