✈ SYD → LHR

21H 1M, 10,576 MILES. YOUR ANCESTORS WALKED LESS THAN THIS.

Flight time
21h 1m
Distance
10,576 mi
Or
17,020 km
Jet lag
9h

Flight from Sydney to London

From Kingsford Smith (SYD), Australia Oceania  →  Heathrow (LHR), United Kingdom Europe

How long is the flight from Sydney to London?

A nonstop flight from Sydney (SYD) to London (LHR) takes about 21 hours 1 minutes, covering a great-circle distance of 10,576 miles (17,020 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.

Avg flight time

21h 1m

Nonstop, scheduled

Distance

10,576 mi

17,020 km · great-circle

Avg speed

810 km/h

Door-to-door including taxi

Time zones & jet lag

Sydney timezone

UTC+10

Australia/Sydney

London timezone

UTC+1

Europe/London

Time difference

-9h

9 hours behind

Jet lag (rough)

~6.3d

Westward — easier

CO₂ footprint per passenger

Economy class, single passenger. Source: DEFRA 2024 averages.

✈ Flight 2519 kg CO₂
🚗 Car (alone) 2910 kg CO₂
🚆 Train 698 kg CO₂

This flight emits roughly 3.6× the CO₂ of an equivalent train trip and 0.9× a car driven alone over the same distance.