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ONT to BFS: distance & flight time
Ontario (Ontario International Airport) → Belfast (Belfast International Airport)
5,086 mi
8,186 km · 4,420 nm
10h 26m
estimated nonstop flight time
+8h
time difference · heading northeast
See live ONT→BFS fares Phone-only fares on this route — call free
Flight time details
5,086 miles nonstop takes roughly 10h 26m 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
- BFS — Belfast International Airport · Belfast, United Kingdom
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 BFS
- BHD · George Best Belfast City Airport14 mi away
- LDY · City of Derry Airport46 mi away
- CAL · Campbeltown Airport58 mi away
- ENK · St Angelo Airport60 mi away
Frequently asked questions
How far is ONT from BFS?
The flight distance from Ontario (ONT) to Belfast (BFS) is 5,086 miles (8,186 km, 4,420 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to BFS?
A nonstop flight takes about 10h 26m 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 Belfast?
Belfast is 8 hours ahead of Ontario.
What is the cheapest way to fly from ONT to BFS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–BFS that never appear on search engines, with no booking fees.