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ONT to LGG: distance & flight time
Ontario (Ontario International Airport) → Liege (Liège Airport)
5,637 mi
9,071 km · 4,898 nm
11h 31m
estimated nonstop flight time
+9h
time difference · heading northeast
See live ONT→LGG fares Phone-only fares on this route — call free
Flight time details
5,637 miles nonstop takes roughly 11h 31m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- LGG — Liège Airport · Liege, Belgium
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 LGG
- MST · Maastricht Aachen Airport24 mi away
- GKE · Geilenkirchen Air Base34 mi away
- AAH · Aachen-Merzbrück Airport35 mi away
- CRL · Brussels South Charleroi Airport45 mi away
Frequently asked questions
How far is ONT from LGG?
The flight distance from Ontario (ONT) to Liege (LGG) is 5,637 miles (9,071 km, 4,898 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to LGG?
A nonstop flight takes about 11h 31m 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 Liege?
Liege is 9 hours ahead of Ontario.
What is the cheapest way to fly from ONT to LGG?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–LGG that never appear on search engines, with no booking fees.