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Cheap flights from London, Ontario to Sydney from $2,519

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SYD
3 Dec — 10 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 November 2025.

Round-trip from

$3,383

One-way from

$2,519

Popular in

July

Cheapest in

March

Average price

$2,581
WestJet
  • WestJet
  • 29/12-5/3
  • 4 total stops
  • 92h 30m total
  • London to Sydney
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17/12
  • 17/12
  • 2 total stops
  • 54h 10m total
  • London to Sydney
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($656 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease ($155 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find flight deals from London to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from London to Sydney
Explore the most affordable flight options available from London to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 November 2025.

Mon 29/1220:10YXU - SYD
2 stops66h 25mWestJet
Thu 5/320:30SYD - YXU
2 stops26h 05mWestJet
Deal found 1/11$3,383
Mon 29/1205:10YXU - SYD
2 stops36h 25mAir Canada
Wed 4/311:20SYD - YXU
2 stops37h 26mAir Canada
Deal found 1/11$3,447
Mon 29/1205:10YXU - SYD
2 stops36h 25mAir Canada
Fri 6/311:20SYD - YXU
2 stops26h 01mAir Canada
Deal found 1/11$3,502
Sun 28/1217:40YXU - SYD
2 stops45h 15mMultiple Airlines
Wed 4/320:30SYD - YXU
2 stops28h 16mMultiple Airlines
Deal found 1/11$3,533
Sat 27/1205:10YXU - SYD
2 stops33h 25mMultiple Airlines
Wed 4/320:30SYD - YXU
2 stops28h 16mMultiple Airlines
Deal found 1/11$3,675
Sat 27/1205:10YXU - SYD
2 stops33h 25mMultiple Airlines
Thu 5/320:30SYD - YXU
2 stops28h 16mMultiple Airlines
Deal found 1/11$3,728
Sun 28/1209:25YXU - SYD
1 stop32h 10mAir Canada
Thu 5/311:20SYD - YXU
1 stop45h 45mAir Canada
Deal found 1/11$3,773
Sun 28/1205:10YXU - SYD
2 stops35h 10mMultiple Airlines
Thu 5/311:20SYD - YXU
3 stops26h 01mMultiple Airlines
Deal found 1/11$3,954
Sun 28/1209:25YXU - SYD
2 stops32h 10mAir Canada
Fri 6/311:20SYD - YXU
2 stops26h 01mAir Canada
Deal found 1/11$4,162
Sat 27/1209:25YXU - SYD
2 stops32h 10mAir Canada
Fri 6/311:20SYD - YXU
2 stops26h 01mAir Canada
Deal found 1/11$4,208

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from London to Sydney that are best for you.

Fly from

London

Fly to

Sydney

Route

Depart

Return

Price

LondonSydney

YXU - SYD

YXUSYD

London

Mon 29/12

20:10-06:35

2 stops66h 25m

Sydney Kingsford Smith

Thu 5/3

20:30-06:35

2 stops26h 05m

$3,383

LondonSydney

YXU - SYD

YXUSYD

London

Mon 29/12

05:10-09:35

2 stops36h 25m

Sydney Kingsford Smith

Wed 4/3

11:20-08:46

2 stops37h 26m

$3,447

LondonSydney

YXU - SYD

YXUSYD

London

Mon 29/12

05:10-09:35

2 stops36h 25m

Sydney Kingsford Smith

Fri 6/3

11:20-21:21

2 stops26h 01m

$3,502

LondonSydney

YXU - SYD

YXUSYD

London

Sun 28/12

17:40-06:55

2 stops45h 15m

Sydney Kingsford Smith

Wed 4/3

20:30-08:46

2 stops28h 16m

$3,533

LondonSydney

YXU - SYD

YXUSYD

London

Sat 27/12

05:10-06:35

2 stops33h 25m

Sydney Kingsford Smith

Wed 4/3

20:30-08:46

2 stops28h 16m

$3,675

LondonSydney

YXU - SYD

YXUSYD

London

Sat 27/12

05:10-06:35

2 stops33h 25m

Sydney Kingsford Smith

Thu 5/3

20:30-08:46

2 stops28h 16m

$3,728

LondonSydney

YXU - SYD

YXUSYD

London

Sun 28/12

05:10-09:35

1 stop36h 25m

Sydney Kingsford Smith

Thu 5/3

11:20-21:21

3 stops26h 01m

$3,773

LondonSydney

YXU - SYD

YXUSYD

London

Sun 28/12

05:10-08:20

2 stops35h 10m

Sydney Kingsford Smith

Thu 5/3

11:20-21:21

3 stops26h 01m

$3,954

LondonSydney

YXU - SYD

YXUSYD

London

Sun 28/12

09:25-09:35

2 stops32h 10m

Sydney Kingsford Smith

Fri 6/3

11:20-21:21

2 stops26h 01m

$4,162

LondonSydney

YXU - SYD

YXUSYD

London

Wed 17/12

20:10-18:20

2 stops54h 10m

$2,519

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Best time to book a flight from London to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Sydney

What is the cheapest month to book a flight from London, Ontario to Sydney?

Currently, September is the cheapest month in which you can book a flight from London, Ontario to Sydney (average of $338). Flying from London, Ontario to Sydney in January is currently the most expensive (average of $1,614). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from London, Ontario to Sydney?

Related info for your journey

Find useful and relevant information for your journey from London to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London, Ontario to Sydney?

    There are many flights that can get you from London, Ontario to Sydney in 36h 25m. Fly via WestJet or Air Canada to get the fastest option. The distance from London, Ontario to Sydney is about 15416 km. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from London to Sydney that include hotel bookings?

    Yes. In addition to deals on London to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Sydney.

  • Can I find deals for business class flights from London to Sydney?

    Yes. Cheapflights offers flight deals from London to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London, Ontario to Sydney?

    Currently, September is the cheapest month in which you can book a flight from London, Ontario to Sydney (average of $338). Flying from London, Ontario to Sydney in January is currently the most expensive (average of $1,614). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Penrith
Manly
Terrigal
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

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How does Cheapflights help users find flights from London to Sydney?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Sydney. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Sydney?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Sydney for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Sydney with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Sydney, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from London to Sydney become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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