Flight time from London to Sydney
A nonstop flight from London (LHR) to Sydney (SYD) would take about 19 h 10 min. Flying back from Sydney to London would take about 21 h 15 min. The two airports are 10,576 miles (17,021 km) apart.
| Route | Typical nonstop time | Leave 9:00 AM, land (local time) |
|---|---|---|
| LHR → SYD | 19h 10m | London → 3:10 PM the next day |
| SYD → LHR | 21h 15m | Sydney → 7:15 PM |
Example arrival times are for a departure on November 18, 2026. Times are estimates of gate-to-gate block time, from the great-circle distance, typical jet cruising speeds, average upper-level winds and about 45 minutes for taxi, take-off, climb and landing. They are not airline schedules, and we don't track which airlines fly this route nonstop. Real flights vary by aircraft, routing, season and the day's wind; check your airline for the exact time.
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Time difference
Sydney is 10 hours ahead of London right now. Allow for it when you plan: the clock at your destination may show a very different time from the hours you spent in the air. See the time now in London and Sydney, or compare them in the time zone converter.
The London to Sydney flight is usually quicker than Sydney to London. High-altitude winds, led by the jet stream, mostly blow from west to east, so planes heading east ride a tailwind and planes heading west fight a headwind. On busy routes the difference shows up in airline timetables every day.
At about 21 h 15 min, this would be longer than any regular nonstop passenger flight today: the longest, between Singapore and New York, are scheduled at roughly 18 to 19 hours. Most travellers make this trip with one stop, usually in Asia or the Middle East, which adds several hours.
Questions people ask
How long is the flight from London to Sydney?
A nonstop flight from London (LHR) to Sydney (SYD) would take about 19 h 10 min, gate to gate. The return flight would take about 21 h 15 min.
How far is Sydney from London?
10,576 miles (17,021 km) along the great-circle route, the shortest path over the Earth between LHR and SYD airports.
What is the time difference between London and Sydney?
Sydney is 10 hours ahead of London right now. The difference can change by an hour during the year when one city changes its clocks for daylight saving time and the other does not.
If I leave London at 9 a.m., when do I arrive in Sydney?
Leaving London at 9:00 AM on November 18, 2026, you would land in Sydney at about 3:10 PM the next day local time.
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Last updated October 21, 2026. Airport locations: OurAirports via airportsdata; time zones: IANA time zone database 2026.