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LHR to SYD: distance & flight time
London (London Heathrow Airport) → Sydney (Sydney Kingsford Smith International Airport)
10,576 mi
17,021 km · 9,190 nm
21h 12m
estimated nonstop flight time
+9h
time difference · heading northeast
See live LHR→SYD fares Phone-only fares on this route — call free
Flight time details
10,576 miles nonstop takes roughly 21h 12m 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
- LHR — London Heathrow Airport · London, United Kingdom
- SYD — Sydney Kingsford Smith International Airport · Sydney, Australia
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 LHR
- LGW · London Gatwick Airport25 mi away
- NHT · RAF Northolt6 mi away
- HYC · Wycombe Air Park18 mi away
- FAB · Farnborough Airport19 mi away
Near SYD
- BWU · Sydney Bankstown Airport11 mi away
- CDU · Camden Airport29 mi away
- XRH · RAAF Base Richmond33 mi away
- WOL · Wollongong Airport48 mi away
Frequently asked questions
How far is LHR from SYD?
The flight distance from London (LHR) to Sydney (SYD) is 10,576 miles (17,021 km, 9,190 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LHR to SYD?
A nonstop flight takes about 21h 12m 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 London and Sydney?
Sydney is 9 hours ahead of London.
What is the cheapest way to fly from LHR to SYD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LHR–SYD that never appear on search engines, with no booking fees.