Cheap Flights from Sydney to London - Heathrow

Do you need to catch a flight to Sydney? Check out our domestic flights to Sydney. If Sydney is not your closest airport, then here are all our flights to London - Heathrow from United Kingdom. Maybe a different destination? Here are all the flights from Sydney

Cheapest Time of Year to Fly from Sydney to London - Heathrow

Return fares from Sydney to London - Heathrow by month, based on the cheapest return airfares found for each month.

The cheapest month to fly to London - Heathrow is November 2026, with return fares from £668 — 29% cheaper than the most expensive month (September 2026, from £944).

When Should You Fly to London - Heathrow?

Based on the fares we've tracked, November is typically the cheapest month to fly to London - Heathrow, with return fares from £668. September is the most expensive month, with the cheapest return fares around £944.

Across the year, return fares to London - Heathrow average around £770. If you can travel in the off-peak months of November, February and August, you'll generally pay up to 13% less than the yearly average.

Cheapest Sydney to London - Heathrow Return Prices

These are the cheapest prices for Sydney to London - Heathrow return airfares.

How I Want That Flight can help you

What's the benefit of using I Want That Flight for my Sydney to London - Heathrow flight?

Think of us as your personal shortcut to a great deal. Instead of you opening fifty different tabs, we instantly cross-check rates across heaps of airlines and booking sites to score you the sweet spot on pricing. Millions of holidaymakers count on us every year to get them airborne, so you're running with a pretty savvy crowd.

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100%. As soon as the page finishes loading your options, hit the "Direct" filter. The layovers will vanish, leaving you with only the non-stop routes.

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