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£345 Cheap Flights from Sydney (SYD) to London (LHR)

View £345 flight on Tue, 20 Oct 2026Opens in a new window

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Popular airlines from Sydney Airport (SYD) to Heathrow Airport (LHR)

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Cheap Flights from Sydney (SYD) to London (LHR)

Prices were available within the past 7 days and start at £345 for one-way flights and £767 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Wed, 11 Nov - Wed, 25 Nov
SYD
Sydney
LHR
London
£767 Return, found 1 hour ago
£767
Return
found 1 hour ago
Select Air China flight, departing Wed, 11 Nov from Sydney to London, returning Wed, 25 Nov, priced at £767 found 1 hour ago
China Eastern Airlines
Wed, 21 Oct - Thu, 12 Nov
SYD
Sydney
LHR
London
£786 Return, found 2 hours ago
£786
Return
found 2 hours ago
Select China Eastern Airlines flight, departing Wed, 21 Oct from Sydney to London, returning Thu, 12 Nov, priced at £786 found 2 hours ago
China Southern Airlines
Wed, 4 Nov - Wed, 18 Nov
SYD
Sydney
LHR
London
£789 Return, found 7 hours ago
£789
Return
found 7 hours ago
Select China Southern Airlines flight, departing Wed, 4 Nov from Sydney to London, returning Wed, 18 Nov, priced at £789 found 7 hours ago
Etihad Airways
Thu, 1 Oct - Sun, 25 Oct
SYD
Sydney
LHR
London
£835 Return, found 6 hours ago
£835
Return
found 6 hours ago
Select Etihad Airways flight, departing Thu, 1 Oct from Sydney to London, returning Sun, 25 Oct, priced at £835 found 6 hours ago
Lufthansa
Mon, 10 May - Mon, 17 May
SYD
Sydney
LHR
London
£901 Return, found 7 hours ago
£901
Return
found 7 hours ago
Select Lufthansa flight, departing Mon, 10 May from Sydney to London, returning Mon, 17 May, priced at £901 found 7 hours ago
British Airways
Wed, 11 Nov - Wed, 25 Nov
SYD
Sydney
LHR
London
£939 Return, found 1 hour ago
£939
Return
found 1 hour ago
Select British Airways flight, departing Wed, 11 Nov from Sydney to London, returning Wed, 25 Nov, priced at £939 found 1 hour ago
British Airways
Wed, 11 Nov - Wed, 25 Nov
SYD
Sydney
LHR
London
£939 Return, found 1 hour ago
£939
Return
found 1 hour ago
Select British Airways flight, departing Wed, 11 Nov from Sydney to London, returning Wed, 25 Nov, priced at £939 found 1 hour ago
Cathay Pacific
Wed, 5 Aug - Thu, 20 Aug
SYD
Sydney
LHR
London
£968 Return, found 1 hour ago
£968
Return
found 1 hour ago
Select Cathay Pacific flight, departing Wed, 5 Aug from Sydney to London, returning Thu, 20 Aug, priced at £968 found 1 hour ago
Air Canada
Wed, 21 Oct - Thu, 12 Nov
SYD
Sydney
LHR
London
£989 Return, found 2 hours ago
£989
Return
found 2 hours ago
Select Air Canada flight, departing Wed, 21 Oct from Sydney to London, returning Thu, 12 Nov, priced at £989 found 2 hours ago
Qantas Airways
Wed, 21 Oct - Thu, 12 Nov
SYD
Sydney
LHR
London
£991 Return, found 2 hours ago
£991
Return
found 2 hours ago
Select Qantas Airways flight, departing Wed, 21 Oct from Sydney to London, returning Thu, 12 Nov, priced at £991 found 2 hours ago

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gatwick LGW. Cheapest option available. Average driving time to city centre is 52 minutes. Flights from £768
LGW
Gatwick
Cheapest
Average driving time to city centre52 min
Flights from £768
Select flight to London City LCY. Closest option available. Average driving time to city centre is 21 minutes. Flights from £2,499
LCY
London City
Closest
Average driving time to city centre21 min
Flights from £2,499

Frequently asked questions

How much does a flight from Sydney, NSW (SYD) to London (LHR) cost?
You can find one-way and return flights from Sydney, NSW (SYD) to London (LHR) with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when SYD to LHR ticket fares go up or down.
What is the cheapest month to fly from Sydney, NSW (SYD-Kingsford Smith Intl.) to London (LHR-Heathrow)?
If you're looking for the cheapest time to fly from Sydney, NSW (SYD-Kingsford Smith Intl.) to London (LHR-Heathrow), March is typically your best bet. You can expect average return flight prices around £904 during this month. Other budget-friendly months to consider for this route include May and October.
Which airlines fly direct from Sydney, NSW (SYD) to London (LHR)?
Enter SYD to LHR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Sydney, NSW (SYD) to London (LHR)?
To find a cheap flight from Sydney, NSW (SYD) to London (LHR), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Sydney, NSW (SYD) to London (LHR)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Sydney, NSW (SYD) to London (LHR)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Sydney, NSW (SYD) to London (LHR). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Sydney, NSW (SYD-Kingsford Smith Intl.) to London (LHR-Heathrow)?
Flying from SYD to LHR with a connection usually takes about 24 hours 30 minutes, traveling roughly 17,019 kilometers. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Sydney, NSW (SYD) to London (LHR)?
Select the "Business class" and "First class" filters when looking for Sydney, NSW (SYD) to London (LHR) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Sydney, NSW (SYD) to London (LHR) flight with Expedia?
It's easy to earn miles on a Sydney, NSW (SYD) to London (LHR) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Sydney, NSW (SYD) to London (LHR) at the last minute?
Typically, booking a last minute flight from Sydney, NSW (SYD) to London (LHR) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Sydney, NSW (SYD) to London (LHR) flight and hotel package?
Securing a Sydney, NSW (SYD) to London (LHR) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sydney, NSW (SYD) to London (LHR)?
If you booked your Sydney, NSW (SYD) to London (LHR) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Kingsford Smith Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air China, Air France, Air India, Asiana Airlines, British Airways, Cathay Pacific, China Eastern Airlines, China Southern Airlines, Emirates, Etihad Airways, Japan Airlines, KLM, Korean Air, Malaysia Airlines, Qantas Airways, Qatar Airways, Singapore Airlines, Thai Airways International, Vietnam Airlines
Return price
£767
Distance
16918 km
Average flight time
15 hours 25 mins

Book with confidence

Compare flights from Sydney to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Sydney to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Kingsford Smith Intl. to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Kingsford Smith Intl. (SYD) to Heathrow (LHR)

The easiest way to view the best deals on flights from Sydney to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Kingsford Smith Intl. to Heathrow start at just £767 and range up to £991.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Sydney and London
  • booking your flight during November, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Sydney to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Kingsford Smith Intl. to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Sydney to London easily and book with confidence

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