Cheap flights from London Heathrow to Sydney

Q: How much are flights normally?

£ 698. If you see flights from London Heathrow to Sydney for less than this, you've found a good deal.

Q: When is the best time to book cheap flights?

30 weeks. If you want cheap flights from London Heathrow to Sydney, this is the best time to book.

Q: What are the cheapest airlines?

Air India, China Southern Airlines. These airlines usually offer the cheapest flights from London Heathrow to Sydney.

Q: What airlines fly indirectly?

Emirates, Cathay Pacific, Qatar Airways, British Airways, Malaysia Airlines. These airlines fly from London Heathrow to Sydney, but you’ll have at least one layover.

Q: When is high season?

December. This is the most expensive time to fly to Sydney. If this is when you want to go, book your flight from London Heathrow in advance.

Q: When is the cheapest time to fly?

June. Flights from London Heathrow to Sydney are usually cheaper at this time of year.

Q: How long is the flight?

22 hrs 20 mins. This is the shortest flight time from London Heathrow to Sydney.

Q: How long should I stay in Sydney?

21 days. Most people spend this amount of time in Sydney.

from as little as £630

39 nights in Sydney, departing London Heathrow on 10 / Sep / 2025 with China Southern Airlines (price found 25 hours ago)

Subject to availability, prices correct of the last 24 hours

Part of the Emirates Group

Safe & Secure, ATOL Protected

Over 30 Years in Business

Rated 'Excellent' on Trustpilot

Cheap return flights from London Heathrow to Sydney

Find the best deals

The London Heathrow / Sydney route

All 17034 km of it

Cheap flight deals for this route

See what's hot at the moment

Sydney flight facts

What you need to know

How much are flights normally?

£ 698

If you see flights from London Heathrow to Sydney for less than this, you've found a good deal.

When is the best time to book cheap flights?

30 weeks

If you want cheap flights from London Heathrow to Sydney, this is the best time to book.

What are the cheapest airlines?

Air India
China Southern Airlines

These airlines usually offer the cheapest flights from London Heathrow to Sydney.

What airlines fly indirectly?

Emirates
Cathay Pacific
Qatar Airways
British Airways
Malaysia Airlines

These airlines fly from London Heathrow to Sydney, but you’ll have at least one layover.

When is high season?

December

This is the most expensive time to fly to Sydney. If this is when you want to go, book your flight from London Heathrow in advance.

When is the cheapest time to fly?

June

Flights from London Heathrow to Sydney are usually cheaper at this time of year.

How long is the flight?

22 hrs 20 mins

This is the shortest flight time from London Heathrow to Sydney.

How long should I stay in Sydney?

21 days

Most people spend this amount of time in Sydney.

Alternative flights from the UK to Sydney

Check out prices for other routes

London to Sydney

from £630 pp

Find flights

Manchester to Sydney

from £792 pp

Find flights

Edinburgh to Sydney

from £856 pp

Find flights

Birmingham to Sydney

from £855 pp

Find flights

London City Airport to Sydney

from £870 pp

Find flights

London Gatwick to Sydney

from £948 pp

Find flights

London Stansted to Sydney

from £1,022 pp

Find flights

Alternative flights from London Heathrow to Sydney

You might find cheaper flights nearby

Canberra from London Heathrow

from £979 pp

Find flights

Coolangata from London Heathrow

from £1,086 pp

Find flights

Melbourne from London Heathrow

from £642 pp

Find flights

Brisbane from London Heathrow

from £863 pp

Find flights

Maroochydore from London Heathrow

from £1,136 pp

Find flights

Launceston from London Heathrow

from £1,442 pp

Find flights

Planning a trip from London Heathrow to Sydney? While there are currently no direct flights, one-stop journeys typically take around 22 to 24 hours, connecting you from the UK's bustling capital to Australia's iconic Harbour City. To secure the best deals, consider traveling during off-peak months like May or September.

Right now, the cheapest flight costs £630 and departs on 10 / Sep / 2025.

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

Currency

Australian dollar

Language

English

Timezone

10 hrs ahead of GMT

How to get cheap flights from London Heathrow to Sydney

Tips and advice from our flight experts

How long is the flight from Heathrow to Sydney?
Flights to Sydney typically range from 22 to 24 hours, including layovers. Common stopover cities include Dubai, Doha, Singapore, and Hong Kong.

Can you fly direct to Sydney from Heathrow?
No, there are currently no direct flights to Sydney from Heathrow. The only direct flight route to Australia operates from Heathrow to Perth, so if you really want a nonstop flight, you can fly to Perth and then fly from Perth to Sydney from there.

How to get a cheap flight to Sydney?
Flight prices to Sydney are mainly affected by the season. The autumn and spring months tend to have the cheapest fares: think March, April, May, October and November.