Find cheap flights from Sydney to London Heathrow Airport

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Low season


High season


Average price (return flight)

Best time to beat the crowds (22% less expensive on average)
Most popular time to fly (29% more expensive on average)
(avg. price over the last 2 weeks)

When to book flights from Sydney to Heathrow

Estimated return price
Average price per month
Flight prices as travel date approaches

Top tips for finding a cheap flight out of Sydney

  • The cheapest flight from Sydney to London Heathrow Airport was found, on average, 65 days before departure.
  • Book at least 7 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is March.
  • Morning departure is around 106% more expensive than an evening flight, on average*.
  • Flights from Sydney’s Kingsford Smith Airport (SYD) to London Heathrow Airport (LHR) depart from International Terminal T1. Heathrow Airport has four terminals (T2, T3, T4 and T5), and the one you arrive at will depend on the airline you fly with; it should be printed on your boarding pass.
  • If you have a pet that needs to be cared for during your trip to London, you’ll find a top-quality pet hotel in the Sydney Airport precinct. Hanrob Pet Hotel is available for a short or long-term stay, and they’ll even arrange video calls so you can check on your beloved pet.
  • Taxi and rideshare providers offer a convenient way to get from your doorstep to the international check-in area at Sydney Airport. The trip usually takes around 20min, though this does depend on traffic conditions, and you can expect to pay roughly A$ 45 to A$ 55.
  • Flying into Heathrow Airport (LHR) will find you at the most established, central and high-functioning of the six airports serving the London area in the UK. It has three different train stations linking the terminals, all connected to Paddington station by Heathrow Express and Heathrow Connect.
  • If you need some beauty or R&R after a long flight, pop into Heathrow’s Be Relax Beauty Spa at Terminal 5B (Gate 35) and grab a quick massage or facial.
  • Regular travellers to Heathrow Airport can take advantage of the Heathrow rewards system. It offers loyalty points to spend in participating stores, exclusive offers and other benefits.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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Sydney - London Heathrow Airport Flights


Sydney (SYD)Australia


London Heathrow Airport (LHR)United Kingdom

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