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SYD to SEA: distance & flight time
Sydney (Sydney Kingsford Smith International Airport) → Seattle (Seattle Tacoma International Airport)
7,750 mi
12,472 km · 6,734 nm
15h 40m
estimated nonstop flight time
-17h
time difference · heading northeast
See live SYD→SEA fares Phone-only fares on this route — call free
Flight time details
7,750 miles nonstop takes roughly 15h 40m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 17-hour time set-back when reading arrival times on your ticket.
The two airports
- SYD — Sydney Kingsford Smith International Airport · Sydney, Australia
- SEA — Seattle Tacoma International Airport · Seattle, 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 SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is SYD from SEA?
The flight distance from Sydney (SYD) to Seattle (SEA) is 7,750 miles (12,472 km, 6,734 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SYD to SEA?
A nonstop flight takes about 15h 40m 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 Seattle?
Seattle is 17 hours behind Sydney.
What is the cheapest way to fly from SYD to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SYD–SEA that never appear on search engines, with no booking fees.