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IAD to SYD: distance & flight time
Washington (Washington Dulles International Airport) → Sydney (Sydney Kingsford Smith International Airport)
9,744 mi
15,681 km · 8,467 nm
19h 34m
estimated nonstop flight time
+14h
time difference · heading west
See live IAD→SYD fares Phone-only fares on this route — call free
Flight time details
9,744 miles nonstop takes roughly 19h 34m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- IAD — Washington Dulles International Airport · Washington, 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 IAD
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 IAD from SYD?
The flight distance from Washington (IAD) to Sydney (SYD) is 9,744 miles (15,681 km, 8,467 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to SYD?
A nonstop flight takes about 19h 34m 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 Washington and Sydney?
Sydney is 14 hours ahead of Washington.
What is the cheapest way to fly from IAD to SYD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–SYD that never appear on search engines, with no booking fees.