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ONT to SEN: distance & flight time
Ontario (Ontario International Airport) → Southend (Southend Airport)
5,443 mi
8,760 km · 4,730 nm
11h 8m
estimated nonstop flight time
+8h
time difference · heading northeast
See live ONT→SEN fares Phone-only fares on this route — call free
Flight time details
5,443 miles nonstop takes roughly 11h 8m 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
- SEN — Southend Airport · Southend, 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 SEN
- LGW · London Gatwick Airport48 mi away
- LHR · London Heathrow Airport50 mi away
- RCS · Rochester Airport17 mi away
- LCY · London City Airport28 mi away
Frequently asked questions
How far is ONT from SEN?
The flight distance from Ontario (ONT) to Southend (SEN) is 5,443 miles (8,760 km, 4,730 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to SEN?
A nonstop flight takes about 11h 8m 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 Southend?
Southend is 8 hours ahead of Ontario.
What is the cheapest way to fly from ONT to SEN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–SEN that never appear on search engines, with no booking fees.