Cheap flights from Sydney to London from $474

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Sydney, with most prices found around $1,107. If you’re not able to fly to London Heathrow Airport in February, then May is your next best option. Flight prices from Sydney to London Heathrow Airport during May average around $1,186.

Our data shows that Thursday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $1,580. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $2,723.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Sydney to London Heathrow Airport in the afternoon for as low as $1,755. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $2,552.

Fly from Sydney Kingsford Smith to London Heathrow for the best Sydney Kingsford Smith - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,390 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Sydney for as low as $1,271 on momondo.

There are 2 cabin classes available to choose from on Sydney to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 11% on your flight if you consider stops on a Sydney to London Heathrow Airport flight.

As of September 2026, prices for Sydney to London Heathrow Airport flights are approximately 7% cheaper when compared to flights at the same time last year.

Turkish Airlines and Vietnam Airlines are the most popular carriers operating from Sydney Kingsford Smith to London Heathrow

Qantas Airways, Etihad Airways and Emirates are the top three most popular airlines that fly to London Heathrow Airport from Sydney according to our data. Qantas Airways is the first choice among our users, with 32% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 8 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Singapore (SIN) was the most common stop: 36% of momondo users choosing 1-stop flights on this route connected there.

Flights via Kuala Lumpur (KUL) offer the lowest average round-trip price of $1,258.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 23h 59m.

Hong Kong (HKG) has the shortest average layover time for this route: 1h 30m.

As of September 2026, 2 flights take off from Sydney and land in London Heathrow Airport each day. The most common flight departure time for this route is 2:00PM, with 100% of daily flights taking off in the afternoon.

The number of flights available between Sydney and London Heathrow Airport is 19 per week as of September 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.