Cheap flights from Sydney to London from $663

If you aren’t able to travel during the month of February, then book flights to London from Sydney during May instead. Flights to London in May, while not as cheap as those in February, still average around $1,681.

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $2,192. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to London for around $2,620.

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as $2,337. In contrast, the most expensive time of day to depart to London is in the evening when prices are around $3,741.

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 $1,996 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Sydney for as low as $1,866 on momondo.

There are 4 cabin classes 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 17% on your flight if you consider stops on a Sydney to London flight.

As of October 2026, prices for Sydney to London flights are approximately 18% cheaper when compared to flights at the same time last year.

Turkish Airlines, British Airways, and Cathay Pacific are the most popular carriers operating from Sydney Kingsford Smith to London

Etihad Airways, Singapore Airlines 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 38% of people opting to fly with this airline when travelling to London. Keep in mind that there are 23 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: 21% of momondo users choosing one-stop flights on this route connected there.

Flights via Taipei City (TPE) offer the lowest average return price of $1,668.

Flights connecting via Singapore (SIN) have the shortest average one-way travel time: 24h 42m.

Dubai (DXB) has the shortest average stopover time for this route: 2h 13m.

As of October 2026, 2 flights take off from Sydney and land in London each day. The most common flight departure time for this route is 15:00, with 100% of daily flights taking off in the afternoon.

The number of flights available between Sydney and London is 15 per week as of October 2026. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.