Sydney (Mascot) to London
21h 34m The flight from Sydney Kingsford Smith International Airport (SYD) to London Gatwick Airport (LGW) covers 17,021 km (10,577 miles) and takes approximately 21h 34m gate to gate for a typical jet.
The route heads north-west on an initial great-circle bearing of 318°, passing near 28.2° N, 104.0° E at its midpoint.
The route
The great-circle path — the shortest line between the two airports across the curve of the earth. On a flat map it looks bent; on a globe it is straight.
Flight time at different cruise speeds
Aircraft type, winds and routing all move the real number. This is the same distance flown at different speeds, plus the 25-minute ground and climb allowance.
| Typical of | Cruise speed | Airborne | Gate to gate |
|---|---|---|---|
| Turboprop / regional | 550 km/h | 30h 57m | 31h 22m |
| Narrowbody jet (A320, 737) | 780 km/h | 21h 49m | 22h 15m |
| Widebody jet (777, 787, A350) | 900 km/h | 18h 55m | 19h 20m |
| Private jet (Gulfstream) | 850 km/h | 20h 02m | 20h 27m |
Headwinds on an eastbound long-haul routinely add 30–60 minutes; the same route westbound can be quicker. Airlines publish schedules with padding built in.
Both airports
| SYD | LGW | |
|---|---|---|
| Airport | Sydney Kingsford Smith International Airport | London Gatwick Airport |
| City | Sydney (Mascot) | London |
| Country | Australia | United Kingdom |
| ICAO | YSSY | EGKK |
| Coordinates | -33.9461, 151.177 | 51.1487, -0.1857 |
| Elevation | 21 ft | 202 ft |
Questions
How long is the flight from Sydney (Mascot) to London?
A non-stop flight from Sydney (Mascot) (SYD) to London (LGW) takes about 21h 34m. The great-circle distance is 17,021 km (10,577 miles, 9,191 nautical miles), flying north-west on an initial bearing of 318°.
How far is Sydney (Mascot) from London?
17,021 kilometres in a straight line over the earth's surface — 10,577 miles or 9,191 nautical miles. Actual flown distance is usually 2–5% longer because aircraft follow airways, avoid weather and route around restricted airspace.
Is there a non-stop flight between SYD and LGW?
This page calculates the direct-line time and distance; it does not track airline schedules. At 17,021 km the route is at the extreme end of what any airliner can fly non-stop, so a connection is likely. Check an airline or booking site for what is actually scheduled.
What should I expect on a 21h 34m flight?
Anything past six hours is a long-haul flight: expect at least one meal service, a significant time-zone shift, and enough sitting that circulation and hydration start to matter. Cabin altitude, dry air and disrupted sleep do more damage to a training routine than the flight itself.
Other routes from Sydney (Mascot)
Airport coordinates from OurAirports (public domain). Distance is a great-circle calculation; flight time uses the model described on the method page. Flight times are great-circle estimates for planning only — always check the airline's published schedule.