Atlanta to Sydney (Mascot)
18h 59m The flight from Hartsfield Jackson Atlanta International Airport (ATL) to Sydney Kingsford Smith International Airport (SYD) covers 14,943 km (9,285 miles) and takes approximately 18h 59m gate to gate for a typical jet.
The route heads west on an initial great-circle bearing of 253°, passing near 0.3° S, 146.4° W 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 | 27h 10m | 27h 35m |
| Narrowbody jet (A320, 737) | 780 km/h | 19h 09m | 19h 35m |
| Widebody jet (777, 787, A350) | 900 km/h | 16h 36m | 17h 01m |
| Private jet (Gulfstream) | 850 km/h | 17h 35m | 18h 00m |
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
| ATL | SYD | |
|---|---|---|
| Airport | Hartsfield Jackson Atlanta International Airport | Sydney Kingsford Smith International Airport |
| City | Atlanta | Sydney (Mascot) |
| Country | United States | Australia |
| ICAO | KATL | YSSY |
| Coordinates | 33.6367, -84.4281 | -33.9461, 151.177 |
| Elevation | 1,026 ft | 21 ft |
Questions
How long is the flight from Atlanta to Sydney (Mascot)?
A non-stop flight from Atlanta (ATL) to Sydney (Mascot) (SYD) takes about 18h 59m. The great-circle distance is 14,943 km (9,285 miles, 8,069 nautical miles), flying west on an initial bearing of 253°.
How far is Atlanta from Sydney (Mascot)?
14,943 kilometres in a straight line over the earth's surface — 9,285 miles or 8,069 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 ATL and SYD?
This page calculates the direct-line time and distance; it does not track airline schedules. At 14,943 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 18h 59m 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.