Cheap flights from Sydney to London from $548

The cheapest month to fly to London from Sydney is in October. Flight prices, which tend to average around $1,103, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Sydney averaging around $1,154.

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 $2,053. 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 $1,352 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 $1,238 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 57% on your flight if you consider stops on a Sydney to London flight.

Air China, AirAsia X, and China Eastern 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 33% 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: 29% of momondo users choosing 1-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average round-trip price of $920.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 24h 04m.

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

As of July 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 20 per week as of July 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.