Route brief · WAS → SYD
Washington → Sydney
$1,356
round-trip · too little price history on this route to compare
Feb 8 '27 – Feb 28 '27 · 20 nights
United1 stop
Cached fare — the booking search re-prices live before you pay.
Destination briefSYDSydneyHarbour sails, cliff walks and flat whites that ruin you for coffee anywhere else.Best windowOct–Nov · Mar–AprAirportsKingsford Smith (SYD)All routes into SydneyWhen this route gets cheap.
Best time to be in Sydney: Oct–Nov · Mar–Apr. Fare history for this route is still thin, so we make no seasonal call yet.
The cheapest itinerary we are tracking makes one stop and takes about 21.5 hours outbound, on a 20-night trip — ticketed under United, which on a connecting fare need not operate every leg. At $1,356 for 15,710 km each way, that works out to about $43 per 1,000 km flown. That is about the $40 typical of ultra-long-haul fares here. Across the 34 departure cities we track at a similar distance from Sydney, this fare ranks 31st — 1.7× the $814 we hold from Los Angeles. For context, the middle fare among the 20 routes of similar length we watch out of Washington is $1,053. We have 1 month of cached prices for this route so far — not enough to call a fare cheap or expensive, so we publish the price without a percentage.
Route facts
- Airports
- Dulles (IAD) · Reagan National (DCA) · Baltimore (BWI) ↔ Kingsford Smith (SYD)
- Flight time
- ~21.5 hours outbound
- Distance
- ~15,710 km each way
- Airlines on the board
- United
- Itineraries
- Connections on current fares
- Best months to visit
- Oct–Nov · Mar–Apr
WAS → SYD, answered.
How far in advance should I book WAS → Sydney?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. See /guides/what-moves-a-flight-price/ for the levers we can measure.
Are there nonstop flights from Washington to Sydney?
The current cheapest fares involve a connection, ticketed under United. Nonstop options exist on many dates at higher prices — check the live search for your exact dates.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on August 24). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Sydney?
Lock the flight first — then compare stays for Feb 8 '27 – Feb 28 '27 · 20 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next WAS → SYD drop reaches you as soon as we find it.
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