London (LHR) – Sydney (SYD)
- Distance
- 17,016 km
- 10,573 mi · 9,188 nm
- Flight time
- 20 h 55 min
- Estimate from distance
- Time difference
- 11 h / 9 h
- January / July
- CO2 per passenger
- 1,992 kg
- One way, economy, incl. RF (1,179 kg CO2 only)
- Passengers / year
- 234,240
- Jul 2025 – Jun 2026 · −0.7%
- Flights / week
- —
- Not in this source
- Seats filled
- —
- Airlines nonstop
- —
- Not named in this source
Traffic: BITRE (Australia), international airline activity by city pair, Jul 2025 – Jun 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources
The way there
- Heading from LHR
- 60°
- Heading from SYD
- 319°
- Halfway point
- 29.05, 104.86
- Great-circle km
- 17,021 km (sphere, for EU261)
- Clocks
- 11 h in January, 9 h in July
The estimate for a route without real times is 20 h 55 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Jul 2025 | 20,210 |
| Aug 2025 | 19,408 |
| Sep 2025 | 19,459 |
| Oct 2025 | 19,654 |
| Nov 2025 | 17,840 |
| Dec 2025 | 20,822 |
| Jan 2026 | 21,468 |
| Feb 2026 | 16,405 |
| Mar 2026 | 21,733 |
| Apr 2026 | 18,623 |
| May 2026 | 19,199 |
| Jun 2026 | 19,419 |
Delay compensation (EU261 / UK261)
Measured by great-circle distance: 17,021 km.
LHR London → SYD Sydney
UK261£520 for arriving 3 hours or more late (£260 if 3–4 hours).
Covers any airline.
SYD Sydney → LHR London
UK261£520 for arriving 3 hours or more late (£260 if 3–4 hours).
Covers UK or EU airlines only.
Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.
Every airport pair between London and Sydney
Kilometres. Linked numbers have a page of their own. All London airports