Cheap flights from Sydney to London from $602

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Sydney, with most prices found around $1,515. If you aren’t able to travel during the month of October, then book flights to London Heathrow Airport from Sydney during February instead. Flights to London Heathrow Airport in February, while not as cheap as those in October, still average around $1,533.

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $2,034. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to London Heathrow Airport for around $2,477.

In the afternoon is the cheapest time of day to fly from Sydney to London Heathrow Airport when you can find flight prices for as low as $2,034. Flying to London Heathrow Airport in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to London Heathrow Airport is at midday when prices are around $2,251.

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 $1,846 when searching weeks before you fly. 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 $1,693 on momondo.

There are 4 cabin classes available to choose from on Sydney Kingsford Smith to London Heathrow 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 40% on your flight if you consider stops on a Sydney to London Heathrow Airport flight.

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

China Eastern, Etihad Airways, and China Airlines are the most popular carriers operating from Sydney Kingsford Smith to London Heathrow

Etihad Airways, Qantas Airways and Cathay Pacific are the top three most popular airlines that fly to London Heathrow Airport from Sydney according to our data. Etihad Airways is the first choice among our users, with 33% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 23 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: 22% of momondo users choosing one-stop flights on this route connected there.

Flights via Tokyo (HND) offer the lowest average return price of $1,741.

Flights connecting via Singapore (SIN) have the shortest average one-way travel time: 24h 48m.

New Delhi (DEL) has the shortest average stopover time for this route: 2h 26m.

As of March 2026, 3 flights take off from Sydney and land in London Heathrow Airport each day. The most common flight departure time for this route is 16:00, with 100% of daily flights taking off in the afternoon.

The number of flights available between Sydney and London Heathrow Airport is 21 per week as of March 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.