Denver to Sydney (Mascot)
17h 07m The flight from Denver International Airport (DEN) to Sydney Kingsford Smith International Airport (SYD) covers 13,444 km (8,353 miles) and takes approximately 17h 07m gate to gate for a typical jet.
The route heads west on an initial great-circle bearing of 250°, passing near 4.8° N, 159.6° 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 | 24h 27m | 24h 52m |
| Narrowbody jet (A320, 737) | 780 km/h | 17h 14m | 17h 39m |
| Widebody jet (777, 787, A350) | 900 km/h | 14h 56m | 15h 21m |
| Private jet (Gulfstream) | 850 km/h | 15h 49m | 16h 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
| DEN | SYD | |
|---|---|---|
| Airport | Denver International Airport | Sydney Kingsford Smith International Airport |
| City | Denver | Sydney (Mascot) |
| Country | United States | Australia |
| ICAO | KDEN | YSSY |
| Coordinates | 39.86, -104.6738 | -33.9461, 151.177 |
| Elevation | 5,431 ft | 21 ft |
Questions
How long is the flight from Denver to Sydney (Mascot)?
A non-stop flight from Denver (DEN) to Sydney (Mascot) (SYD) takes about 17h 07m. The great-circle distance is 13,444 km (8,353 miles, 7,259 nautical miles), flying west on an initial bearing of 250°.
How far is Denver from Sydney (Mascot)?
13,444 kilometres in a straight line over the earth's surface — 8,353 miles or 7,259 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 DEN and SYD?
This page calculates the direct-line time and distance; it does not track airline schedules. At 13,444 km the route is within reach of long-range widebodies, though not every city pair is served non-stop. Check an airline or booking site for what is actually scheduled.
What should I expect on a 17h 07m 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.