Cheap flights from London Heathrow to Sydney

from as little as £578

7 nights in Sydney, departing London Heathrow on 05 / Mar / 2025 with China Southern Airlines (price found 6 hours ago)

Subject to availability, prices correct of the last 24 hours
Sydney

Cheap return flights from London Heathrow to Sydney

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The London Heathrow / Sydney route

All 17034 km of it

Cheap flight deals for this route

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Sydney flight facts

What you need to know

Alternative flights from the UK to Sydney

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Sydney

Today alone, Netflights has searched over 104,120 flights. 05 / Mar / 2025 is currently the lowest priced day of the year to fly the London Heathrow/Sydney route. There are around 3,691 flights on any given week from the UK to Sydney and the cheapest month to fly right now is March.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

8 °C

AVG

17 °C

HIGHEST

26 °C

Rainfall (mm)
LOWEST

60 mm

AVG

95.8 mm

HIGHEST

130 mm

Key facts about Sydney

How to get cheap flights from London Heathrow to Sydney

Tips and advice from our flight experts

We've gone through lots of different flights, to help you find the cheapest way to get from London Heathrow to Sydney. You can choose from 25 airlines. At the moment, 05 / Mar / 2025 is the cheapest date to travel, but scroll through the results to find the option that works best for you.

There are 3,691 flights from London Heathrow to or via Sydney every week. Out of the 25 available airlines, the most popular ones are Qatar Airways, Emirates & Qantas. But that doesn’t necessarily mean they’ll be the best option for your travel dates. To see as many flights as possible, try widening your search to include other departure airports.

Generally speaking, the flight from London Heathrow to Sydney takes around 26 hrs. The fastest flight takes 21 hrs 45 mins to cover the 17034 km distance. You can view all flight times yourself in the results list.

June is normally the cheapest month to fly to Sydney, but it’s important to try different options when you search. Searching by month, for instance, will show you the best time of the week to fly. December is always the most expensive time to fly but, if you check regularly and book early, you have a better chance of getting a good deal.

Other popular destinations near Sydney

Where other people are flying to

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