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DUC to SYD: distance & flight time
Duncan (Halliburton Field) → Sydney (Sydney Kingsford Smith International Airport)
8,570 mi
13,791 km · 7,447 nm
17h 16m
estimated nonstop flight time
+15h
time difference · heading west
See live DUC→SYD fares Phone-only fares on this route — call free
Flight time details
8,570 miles nonstop takes roughly 17h 16m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- DUC — Halliburton Field · Duncan, United States
- SYD — Sydney Kingsford Smith International Airport · Sydney, Australia
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near DUC
Near SYD
- BWU · Sydney Bankstown Airport11 mi away
- CDU · Camden Airport29 mi away
- XRH · RAAF Base Richmond33 mi away
- WOL · Wollongong Airport48 mi away
Frequently asked questions
How far is DUC from SYD?
The flight distance from Duncan (DUC) to Sydney (SYD) is 8,570 miles (13,791 km, 7,447 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DUC to SYD?
A nonstop flight takes about 17h 16m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Duncan and Sydney?
Sydney is 15 hours ahead of Duncan.
What is the cheapest way to fly from DUC to SYD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DUC–SYD that never appear on search engines, with no booking fees.