London, United Kingdom → Sydney, Australia · ✈ 21h 45min · 🚗 276h 9min
9,176 nautical miles · Time difference: +10h ahead · Direction: southeast
The distance from London to Sydney is 16,994 km (10,560 miles). The fastest way to travel is by flight. A direct flight takes approximately 21h 45min.
The straight-line distance from London, United Kingdom to Sydney, Australia is approximately 16,994 kilometers (10,560 miles or 9,176 nautical miles). This measurement uses the Haversine formula, computing the great-circle distance — the shortest path between two points on Earth's surface.
Sydney is located southeast of London. London is in Europe, in the England region of United Kingdom, while Sydney is in Oceania, in New South Wales, Australia. This intercontinental route spans from Europe to Oceania.
| Mode | Distance | Est. Time | Best For |
|---|---|---|---|
| ✈️ Flight | 16,994 km | ~21h 45min | Best option for speed |
Our recommendation: flight is typically the best way to travel from London to Sydney. For 16,994 km, flying saves significant time and is usually the most practical choice.
London is a major city in United Kingdom with a population of approximately 8,982,000. Located in the England region, it is an important hub in Europe. As one of the largest cities in United Kingdom, London is a major international gateway with extensive air connections and multiple airports.
→ See all distances from London
Sydney is a notable city in Australia with a population of approximately 5,312,163. Situated in the New South Wales region, it serves as a key destination in Oceania. Sydney is one of Australia's largest cities, offering major airport hubs, extensive public transport, and a wide range of accommodation options.
→ See all distances from Sydney
At 16,994 km, this is one of the longer routes on the globe, spanning from Europe to Oceania. For comparison, London to Sydney is about 17,000 km — roughly half the circumference of the Earth.
At 16,994 km, London to Sydney is one of the world's longer routes, covering 42.4% of Earth's circumference (40,075 km).
Combined, London and Sydney have a population of over 14,294,163 people, making this a major urban corridor.
This route crosses from Europe to Oceania, spanning 10 timezones.
This 16,994 km journey from Europe to Oceania is one of the world's longer routes. At this distance, jet lag becomes a significant factor — plan for at least one recovery day per 3 time zones crossed.
See how the London to Sydney distance compares to similar routes:
The straight-line distance from London to Sydney is approximately 16,994 kilometers (10,560 miles, 9,176 nautical miles).
A direct flight takes approximately 21h 45min, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 276h 9min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
Sydney is approximately +10h ahead compared to London.
The estimated road distance is approximately 22,092 km, which is about 30% longer than the 16,994 km straight-line distance.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: April 7, 2026.