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Return Flights from London to Sydney
LHR ⇄ SYD
London to Sydney return, a route covering 17,020 km each way with a typical flight time of 20h 31m. Sydney is located in Australia, in Oceania. Fares and availability change constantly; the figures below reflect what's actually on file for this route today, not an estimate.
Return vs. two one-way tickets
Based on real fares on file: a return ticket is €1196, versus €986 for two separate one-way tickets at €493 each. Two one-ways currently work out cheaper — worth comparing both before booking, especially if your dates are flexible or you might fly back from a different city.
Real fares right now
Real one-way fares on file for the outbound leg — useful for picking the cheapest day to fly, even when booking return. The lowest fare on file is €769 on Fri Aug 7.
Cheapest day for the outbound leg
Weather in Sydney by season
Based on the last 3 years of real historical data.
Nearby airports
- London City Airport (LCY)36 km
- London Gatwick Airport (LGW)41 km
- London Luton Airport (LTN)45 km
Money-saving tips
- Book 4–8 weeks ahead of departure where possible — a general industry pattern, not specific to this route.
- Tuesday and Wednesday departures tend to be cheaper than weekend flights on most routes.
- Morning flights are often less expensive than midday or evening departures.
- Compare nearby departure and arrival airports — see the alternatives above.
- Flexible return dates widen your options considerably versus a fixed round-trip window.
Fare types explained
Most airlines sell several fare tiers on the same flight: Economy (the base fare, often with paid extras like seat selection and baggage), Premium Economy (more legroom, sometimes included baggage), Business (priority boarding, lounge access, flat or angled seating on longer routes), and First Class (offered by a shrinking number of airlines on select long-haul routes). Exact inclusions vary by airline and route — check the fare rules shown at booking.
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