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SYD to ISN: distance & flight time
Sydney (Sydney Kingsford Smith International Airport) → Williston (Sloulin Field International Airport)
8,576 mi
13,802 km · 7,453 nm
17h 17m
estimated nonstop flight time
-15h
time difference · heading northeast
See live SYD→ISN fares Phone-only fares on this route — call free
Flight time details
8,576 miles nonstop takes roughly 17h 17m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- SYD — Sydney Kingsford Smith International Airport · Sydney, Australia
- ISN — Sloulin Field International Airport · Williston, United States
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 SYD
- BWU · Sydney Bankstown Airport11 mi away
- CDU · Camden Airport29 mi away
- XRH · RAAF Base Richmond33 mi away
- WOL · Wollongong Airport48 mi away
Near ISN
- SDY · Sidney - Richland Regional Airport41 mi away
- YEN · Estevan Airport78 mi away
- OLF · L M Clayton Airport89 mi away
- GDV · Dawson Community Airport90 mi away
Frequently asked questions
How far is SYD from ISN?
The flight distance from Sydney (SYD) to Williston (ISN) is 8,576 miles (13,802 km, 7,453 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SYD to ISN?
A nonstop flight takes about 17h 17m 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 Sydney and Williston?
Williston is 15 hours behind Sydney.
What is the cheapest way to fly from SYD to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SYD–ISN that never appear on search engines, with no booking fees.