Seoul to Sydney (Mascot)
10h 47m The flight from Seoul Gimpo International Airport (GMP) to Sydney Kingsford Smith International Airport (SYD) covers 8,341 km (5,183 miles) and takes approximately 10h 47m gate to gate for a typical jet.
The route heads south on an initial great-circle bearing of 159°, passing near 1.8° N, 139.3° 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 | 15h 10m | 15h 35m |
| Narrowbody jet (A320, 737) | 780 km/h | 10h 42m | 11h 07m |
| Widebody jet (777, 787, A350) | 900 km/h | 9h 16m | 9h 41m |
| Private jet (Gulfstream) | 850 km/h | 9h 49m | 10h 14m |
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
| GMP | SYD | |
|---|---|---|
| Airport | Seoul Gimpo International Airport | Sydney Kingsford Smith International Airport |
| City | Seoul | Sydney (Mascot) |
| Country | South Korea | Australia |
| ICAO | RKSS | YSSY |
| Coordinates | 37.5583, 126.791 | -33.9461, 151.177 |
| Elevation | 59 ft | 21 ft |
Questions
How long is the flight from Seoul to Sydney (Mascot)?
A non-stop flight from Seoul (GMP) to Sydney (Mascot) (SYD) takes about 10h 47m. The great-circle distance is 8,341 km (5,183 miles, 4,504 nautical miles), flying south on an initial bearing of 159°.
How far is Seoul from Sydney (Mascot)?
8,341 kilometres in a straight line over the earth's surface — 5,183 miles or 4,504 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 GMP and SYD?
This page calculates the direct-line time and distance; it does not track airline schedules. At 8,341 km the route is comfortably within range of a non-stop service if an airline chooses to fly it. Check an airline or booking site for what is actually scheduled.
What should I expect on a 10h 47m 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.
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.