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 March 2027, with return fares from £887 — 20% cheaper than the most expensive month (September 2026, from £1,107).

When Should You Fly to London - Heathrow?

Based on the fares we've tracked, March is typically the cheapest month to fly to London - Heathrow, with return fares from £887. September is the most expensive month, with the cheapest return fares around £1,107.

Across the year, return fares to London - Heathrow average around £971. If you can travel in the off-peak months of March, October and May, you'll generally pay up to 9% 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?

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