Cheap flights from London to Sydney
Cheap return flights from London to Sydney
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Sydney flight facts
What you need to know
What are the cheapest airlines?
- Qantas
- British Airways
- Singapore Airlines
These airlines usually offer the cheapest flights from London to Sydney.
What airlines fly indirectly?
- Emirates
- Etihad Airways
- Cathay Pacific
These airlines fly from London to Sydney, but you’ll have at least one layover.
How long is the flight?
22 hours
This is the shortest flight time from London to Sydney.
Alternative flights from the UK to Sydney
Check out prices for other routes
Alternative flights from London
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the London/Sydney route. There are around 35 flights on any given week from the UK to Sydney and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from London to Sydney
Tips and advice from our flight experts
You've searched for flights from London to Sydney. We've found 50 flights and compared them to give you the best offer. On average, Qantas is the cheapest airline for this route, so look out for them. The cheapest offer we've found is a one way ticket for the route London to Sydney on 08/05/2026 at 00:50 for £80.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 15 airlines that operate the 17000 km flight from London to Sydney.
To find the best offers, consider booking 2-3 months in advance or looking for last-minute deals. Flying in the off-peak season can also save you money. Qantas is a popular and affordable choice for this route, with an average flight duration of 22 hours. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our flight + hotel service to book everything at once, saving you time and money.
Other popular destinations near Sydney
Where other people are flying to
