Cheap flights from Sydney to London from $471

The cheapest month to fly to London from Sydney is in February. Flight prices, which tend to average around $1,090, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Sydney averaging around $1,155.

The cheapest day to depart from Sydney to London is on a Thursday. Travelers who choose to depart for London on a Thursday will often find tickets for as low as $1,580. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $2,723. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Sydney in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,755 when looking at flights departing in the afternoon. Flights to London are more costly at noon, with an average ticket price of $2,578. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to London from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $1,371 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Sydney for as low as $1,235 on momondo.

There is only 1 cabin class available to choose from on Sydney to London 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 21% on your flight if you consider stops on a Sydney to London flight.

As of August 2026, prices for Sydney to London flights are approximately 22% cheaper when compared to flights at the same time last year.

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

Etihad Airways, Qantas Airways and Emirates are the top three most popular airlines that fly to London from Sydney according to our data. Etihad Airways is the first choice among our users, with 32% of people opting to fly with this airline when traveling to London. Keep in mind that there are 7 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Singapore (SIN) was the most common stop: 28% of momondo users choosing 1-stop flights on this route connected there.

Flights via Incheon (ICN) offer the lowest average round-trip price of $1,130.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 23h 50m.

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

As of August 2026, 2 flights take off from Sydney and land in London 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 is 18 per week as of August 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.