International route
Cheap flights from Sydney to Seattle
Sydney Kingsford Smith Airport (SYD) to Seattle-Tacoma International Airport (SEA). 7,750 miles, 14h 40m nonstop.
SYD to SEA at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 7,750 milesgreat-circle
- Typical flight time
- 14h 40mnonstop, gate to gate
- Nonstop airlines
- DLQF2 airlinesDelta, Qantas
- Nonstop flights per day
- 2all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Wednesday17% less than Sunday
- Time difference
- 17h behindSeattle vs Sydney
Sydney to Seattle
Round trips from $625
Per traveler, taxes and fees included. Lowest fare we found departs Wed, Jan 6.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppSydney to Seattle fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Sydney to Seattle
2 airlines fly nonstop with 2 departures a day combined, plus 13 more with one stop.
- DLDelta Air LinesSkyTeamNonstop · 1 flight a day · first checked bag from $35
- QFQantasoneworldNonstop · 1 flight a day · first checked bag included
- AMAeroméxicoSkyTeamConnecting via MEX, MTY, GDL · first checked bag from $40
- ACAir CanadaStar AllianceConnecting via YVR, YYC · first checked bag from $35
- NZAir New ZealandStar AllianceConnecting via AKL · first checked bag included
- ASAlaska AirlinesoneworldConnecting via PDX, ANC, SFO, SAN · first checked bag from $35
- AAAmerican AirlinesoneworldConnecting via DFW, PHX · first checked bag from $40
- CIChina AirlinesSkyTeamConnecting via TPE · first checked bag included
- BREVA AirStar AllianceConnecting via TPE · first checked bag included
- FJFiji AirwaysoneworldConnecting via NAN · first checked bag included
- JLJapan AirlinesoneworldConnecting via HND · first checked bag included
- UAUnited AirlinesStar AllianceConnecting via DEN, IAH, SFO, LAX · first checked bag from $40
- VBVivaLow-costConnecting via MTY, GDL · first checked bag from $45
- Y4VolarisLow-costConnecting via CUN · first checked bag from $45
- WSWestJetConnecting via YVR · first checked bag from $35
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- San Francisco (SFO)UAAS2 airlines
- Vancouver (YVR)ACWS2 airlines
- Monterrey (MTY)AMVB2 airlines
- Guadalajara (GDL)AMVB2 airlines
- Taipei (TPE)BRCI2 airlines
Tips for this route
- Only Delta and Qantas fly this route nonstop, which keeps nonstop fares firm. A one-stop itinerary through SFO or YVR is usually cheaper if you can spare the extra three to five hours.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $625; September 2026 is the most expensive at $839 and up, a difference of $214 per traveler.
- Departing on a Wednesday averages 17% less than a Sunday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel.
- Seattle is 17 hours behind Sydney. A morning departure lands in Seattle with most of the day left; an evening flight arrives close to local dinner time.
Destination guide
Seattle: Coffee, mountains and Puget Sound
Seattle is the Pacific Northwest's gateway: Pike Place Market, the Space Needle and ferries across Puget Sound, with Mount Rainier and the Olympic Peninsula a couple of hours away. Sea-Tac is a Delta and Alaska hub with light rail downtown.
Best time to visit: July–September is dry, sunny and gorgeous — and the most expensive. May–June and late September are good compromises. October–April is gray and drizzly but cheap.
Flying the other way? Seattle to SydneyFares, airlines and tips for SEA to SYD.Ready to compare live fares?
See every airline on SYD–SEA side by side with bags and seat rules spelled out.
Search Sydney to SeattleSydney to Seattle: common questions
How long is the flight from Sydney to Seattle?
A nonstop flight from Sydney (SYD) to Seattle (SEA) takes about 14h 40m gate to gate, covering 7,750 miles. Connecting itineraries add the layover, typically 2 to 5 hours more in total.
Which airlines fly nonstop from SYD to SEA?
Delta Air Lines and Qantas operate nonstop flights from Sydney (SYD) to Seattle (SEA), with 2 nonstop departures a day between them. One-stop options connect through SFO, YVR and MTY.
What is the cheapest month to fly from Sydney to Seattle?
Over the next six months, January 2027 has the lowest round-trip fares from Sydney (SYD) to Seattle (SEA), starting at $625 per traveler including taxes and fees. Within any month, Wednesday departures average the lowest prices.
How far in advance should I book Sydney to Seattle flights?
Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Sydney and Seattle?
Seattle is 17 hours behind Sydney. SYD is on Australia/Sydney time and SEA on America/Los Angeles time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.