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Cheap flights from Sydney to Seattle from $629

SYD — SEA
15 Nov — 22 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Seattle

Mon 2/1111:50 -
1 stop25h 43m
Mon 9/1117:23 -
1 stop20h 57m
Deal found 10/10$1,074
Mon 9/1111:20 -
2 stops25h 37m
Tue 24/1119:35 -
1 stop18h 45m
Deal found 12/10$1,075
Mon 23/1109:15 -
1 stop23h 10m
Wed 2/1215:20 -
1 stop23h 00m
Deal found 12/10$1,082
Sun 8/1111:50 -
1 stop19h 30m
Mon 23/1119:35 -
1 stop18h 45m
Deal found 11/10$1,146
Thu 5/1109:10 -
1 stop29h 07m
Fri 13/1116:39 -
1 stop21h 26m
Deal found 12/10$1,153
Tue 20/1020:45 -
2 stops21h 14m
Tue 27/1020:45 -
1 stop29h 00m
Deal found 15/10$1,196
Sat 31/1011:50 -
1 stop18h 30m
Fri 6/1118:30 -
1 stop19h 35m
Deal found 11/10$1,217
Fri 6/1109:15 -
1 stop29h 02m
Fri 13/1116:39 -
1 stop21h 26m
Deal found 12/10$1,222
Thu 5/1121:40 -
1 stop27h 28m
Thu 12/1107:00 -
1 stop17h 45m
Deal found 15/10$1,260
Thu 12/1121:40 -
1 stop27h 28m
Fri 27/1111:29 -
1 stop37h 16m
Deal found 15/10$1,277
Mon 9/1111:50 -
1 stop27h 57m
Mon 16/1117:23 -
1 stop20h 57m
Deal found 12/10$1,299

Find flight deals from Sydney to Seattle

Round-trip from

$1,075

One-way from

$629

Popular in

September

Cheapest in

August

Average price

$1,492
United Airlines
  • United Airlines
  • 2/2-8/3
  • 2 total stops
  • 42h 56m total
  • Sydney to Seattle
Search Deals
United Airlines
  • United Airlines
  • 10/11-31/12
  • 2 total stops
  • 26h 43m total
  • Sydney to Seattle
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($57 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Sydney to Seattle that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest return flight

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Mon 9/11

11:50-23:07

2 stops30h 17m

Seattle/Tacoma Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

$629

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Sat 14/11

11:50-23:31

1 stop30h 41m

Seattle/Tacoma Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

$713

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Mon 9/11

10:40-22:04

1 stop30h 24m

Seattle/Tacoma Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

$778

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Tue 27/10

11:50-19:17

3 stops49h 27m

Seattle/Tacoma Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

$778

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Tue 24/11

11:20-14:39

3 stops46h 19m

Seattle/Tacoma Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

$779
Fastest return journey

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Fri 20/11

11:50-14:39

1 stop21h 49m

Seattle/Tacoma Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

$859

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Mon 9/11

19:15-14:51

2 stops38h 36m

Seattle/Tacoma Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

$892

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Mon 9/11

11:20-17:57

2 stops25h 37m

Seattle/Tacoma Intl

Tue 24/11

19:35-09:20

1 stop18h 45m

$1,075

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Mon 23/11

09:15-13:25

1 stop23h 10m

Seattle/Tacoma Intl

Wed 2/12

15:20-09:20

1 stop23h 00m

$1,082

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Sun 13/12

08:55-17:55

3 stops28h 00m

Seattle/Tacoma Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

$1,126

Flights are sorted by cheapest return flights first.

Deals found on 11/10

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Sydney to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sydney with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Sydney to Seattle

How far ahead should I book a flight from Sydney to Seattle?

Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Sydney to Seattle?

Currently, August is the cheapest month in which you can book a flight from Sydney to Seattle (average of $1,446). Flying from Sydney to Seattle in September is currently the most expensive (average of $2,051). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Sydney to Seattle?

Airfare is below average for this route at the moment.

Sydney to Seattle flights typically cost between $1,397 and $1,677 in February.
The cheapest return price found within the last 5 days was $1,075 on United Airlines (2 Feb–8 Mar).

Reviews of airlines servicing Seattle

See what other customers who have flown with Delta,Qantas Airways, andUnited Airlines from Sydney to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,654 reviews
Check prices

Entertainment

7.8

Crew

8.5

Comfort

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Delta
7.8
Good
8,654 reviews
Delta
7.8
Good
8,654 reviews
Check prices

Entertainment

7.8

Crew

8.5

Comfort

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Qantas Airways
7.5
Good
1,111 reviews
Delta
7.8
Good
8,654 reviews
Check prices

Entertainment

7.8

Crew

8.5

Comfort

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
United Airlines
7.4
Good
10,371 reviews
Delta
7.8
Good
8,654 reviews
Check prices

Entertainment

7.8

Crew

8.5

Comfort

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Air Canada
7.1
Good
11,775 reviews
Delta
7.8
Good
8,654 reviews
Check prices

Entertainment

7.8

Crew

8.5

Comfort

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
American Airlines
7.0
Good
12,172 reviews
Delta
7.8
Good
8,654 reviews
Check prices

Entertainment

7.8

Crew

8.5

Comfort

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

Related info for your journey

  • How long is the flight from Sydney to Seattle?

    Airlines like United Airlines fly from Sydney to Seattle in about 25h 37m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 12463 km.

  • What are the cheapest airlines flying from Sydney to Seattle round-trip?

    Currently priced at $1,137, United Airlines will fly you from Sydney to Seattle and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and American Airlines - these airlines can fly you to your destination from $1,230 and $1,272, respectively. Users have found that United Airlines is 30% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Sydney to Seattle one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $709. Users have also found prices from $719 and $842 on Hawaiian Airlines and Qantas Airways, respectively.

  • Where are the most common stopover locations when flying from Sydney to Seattle?

    Of the flights from Sydney to Seattle that have stopovers, most of them stop in Vancouver.

  • Where are the least popular stopover locations for Sydney to Seattle flights?

    The least popular stopover on flights from Sydney to Seattle is San Francisco.

  • Can I find deals for flights from Sydney to Seattle that include hotel bookings?

    Yes. In addition to deals on Sydney to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Seattle.

  • Can I find deals for business class flights from Sydney to Seattle?

    Yes. Cheapflights offers flight deals from Sydney to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sydney to Seattle?

    Currently, August is the cheapest month in which you can book a flight from Sydney to Seattle (average of $1,446). Flying from Sydney to Seattle in September is currently the most expensive (average of $2,051). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Ocean Shores

Browse thousands of different options on Cheapflights for your next trip

Fly from Sydney to Seattle on these airlines

Air Canada flights from Sydney Kingsford Smith to Seattle/Tacoma Intl
Hawaiian Airlines flights from Sydney Kingsford Smith to Seattle/Tacoma Intl

Top 6 airlines flying from Sydney to Seattle

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,137Average$1,567FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,230Average$1,617FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest$1,272Average$1,397FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qantas AirwaysCheapest$1,325Average$1,482FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
DeltaCheapest$1,357Average$1,439FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Hawaiian AirlinesCheapest$1,472Average$1,880FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Sydney to Seattle?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Sydney to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Sydney to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Sydney.

Can Cheapflights find flights from Sydney to Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Sydney to Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Sydney to Seattle become cheaper?

Yes, Cheapflights offers price alerts on Sydney to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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