Cheap flights from the United Kingdom to Australia from $727

In general, May is the cheapest month to fly from United Kingdom to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,463. If you don’t want to visit Australia in May, then you should wait until June to fly from United Kingdom, when ticket prices are also cheap, with an average price of $1,566.

On average, the least expensive day to fly to Australia from United Kingdom is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $2,111. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from United Kingdom to Australia on a Thursday will generally be more expensive and average around $3,150. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

You are more likely to see cheaper flights to Australia from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,885 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from United Kingdom for as low as $1,668 on momondo.

AirAsia X, China Eastern, and Malaysia Airlines are the most popular carriers operating from United Kingdom to Australia

Qatar Airways, Etihad Airways and China Southern are the top three most popular airlines that fly to Australia from United Kingdom according to our data. Qatar Airways is the first choice among our users, with 46% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 21 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between United Kingdom and Australia have experienced a delay on any given week. The average delay length over the past 12 months has been 125 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, Qantas Airways have had the fewest delays on this route over the last 12 months, with about 24% of their flights experiencing any sort of delay.

The number of flights available between United Kingdom and Australia is 4 per day as of February 2026. The most frequent departure time is 21:00, with 75% of daily flights leaving in the evening.

As of February 2026, there are 28 flights per week flying from United Kingdom to Australia. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.