Sydney to London — Flight Time

United Kingdom travel essentials →

SYD → LHR  ·  20h 50m  ·  17,020 km  ·  UTC+10/+11 → UTC+0/+1

Flying time estimate for a non-stop flight: 20h 50m over 17,020 km.

Flight Duration
20h 50m
non-stop estimate
Distance
17,020 km
10,576 miles
Time Difference
−9 to −11h
UTC+10/+11 → UTC+0/+1
[ SYD → LHR — Route Info ]

A non-stop flight from Sydney, Australia (SYD) to London, United Kingdom (LHR) would cover approximately 17,020 km (10,576 miles) along the great-circle route, with an estimated flight duration of 20 hours and 50 minutes.

Non-stop service: We couldn’t find a non-stop service on this route as of 18 Oct 2026. Most itineraries connect via a hub. Qantas’s international route list shows Sydney–London operating via Singapore.

Connections listed by airlines

  • Singapore (SIN): Qantas lists “London (Heathrow) and Sydney (via Singapore)” (source, checked 18 Oct 2026)
Example routings (distances computed, not schedules)
ViaLeg 1Leg 2Total distanceFlying time (excl. connection)
Singapore (SIN)6,293 km · ~8h39m10,883 km · ~13h52m17,177 km~22.5 h
Dubai (DXB)12,043 km · ~15h11m5,498 km · ~7h45m17,542 km~22.9 h
Doha (DOH)12,375 km · ~15h34m5,241 km · ~7h27m17,616 km~23.0 h
Perth (PER)3,277 km · ~5h13m14,508 km · ~17h59m17,785 km~23.2 h

Add your connection time. Total journey time = flying time + time on the ground at the hub. Your itinerary shows the exact figure.

    London is 9–11 hours behind Sydney, depending on daylight saving. Set your watch back on arrival.

    These estimates assume a typical commercial cruising speed of 880 km/h and include standard time for taxi, climb and descent. Actual scheduled times can differ by an hour or more on long routes, depending on airline, routing, aircraft and winds.

    → Calculate exact arrival time for your departure

    Time zones & arrival

    Time shift: London is between 9 and 11 hours behind Sydney, depending on the time of year (both use daylight saving, on different dates). On the shortest (great-circle) route you fly west, so clocks go back on arrival.

    Live time difference: Sydney and London → (today’s offsets and the next clock change)

    These are clock facts only, not health advice.

    Related

    Sources

    Route record checked by hand on 18 Oct 2026. One-stop figures are computed from airport coordinates with the site formula (880 km/h + 1.5 h per leg) and exclude connection time.

    Common Questions
    How long is the flight from Sydney to London?
    We couldn’t find a non-stop service from Sydney to London as of 18 Oct 2026. Via a hub such as Singapore or Dubai, flying time adds up to about 22–24 hours, plus connection time. A non-stop flight would take approximately 20h 50m over 17,020 km (10,576 miles), including standard taxi, climb and descent time.
    What is the time difference between Sydney and London?
    Sydney uses UTC+10, or UTC+11 during daylight saving; London uses UTC+0, or UTC+1 during daylight saving. London is 9–11 hours behind Sydney, depending on daylight saving. Set your watch back on arrival.
    How far is Sydney from London?
    The great-circle distance — the shortest path along Earth's surface — from Sydney to London is approximately 17,020 km (10,576 miles). This is the actual distance your aircraft travels through the air.
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    Travelling Sydney to London