$428+ Cheap flights from Sydney (SYD) to Seattle (SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Sydney to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Sydney to Seattle
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Cheapest flights from Sydney to SeattleExplore the most affordable flight options available from Sydney to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Sydney to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:15 pm -
2 stops22h 30m
Wed 10/288:09 pm -
1 stop40h 16m
Deal found 9/6![Multiple Airlines logo]()
$886
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:15 pm -
2 stops22h 30m
Thu 10/298:09 pm -
1 stop40h 16m
Deal found 9/7![Multiple Airlines logo]()
$890
This Flighttix deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:10 am -
2 stops22h 59m
Wed 10/285:00 am -
2 stops34h 00m
Deal found 9/6![British Airways logo]()
$905
This Flighttix deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:10 am -
1 stop20h 57m
Wed 10/216:00 am -
2 stops32h 05m
Deal found 9/8![British Airways logo]()
$924
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:10 am -
1 stop20h 57m
Wed 10/284:37 pm -
1 stop22h 23m
Deal found 9/5![American Airlines logo]()
$933
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:15 pm -
2 stops22h 30m
Mon 10/268:00 pm -
1 stop40h 25m
Deal found 9/6![Multiple Airlines logo]()
$938
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:10 am -
1 stop30h 27m
Wed 10/213:10 pm -
2 stops22h 55m
Deal found 9/9![American Airlines logo]()
$942
This Expedia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:10 am -
1 stop20h 50m
Tue 11/101:35 pm -
1 stop24h 25m
Deal found 9/10![Qantas Airways logo]()
$974
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:10 am -
1 stop23h 47m
Mon 10/197:10 am -
1 stop30h 55m
Deal found 9/5![American Airlines logo]()
$977
Best flights from Sydney to SeattleDiscover carefully curated flight deals from Sydney to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Sydney to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:20 am -
2 stops27h 37m
Tue 11/108:30 am -
2 stops27h 30m
Deal found 9/10![United Airlines logo]()
$985
This Qantas Airways deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:50 pm -
1 stop21h 47m
Tue 10/203:30 pm -
2 stops22h 00m
Deal found 9/6![Multiple Airlines logo]()
$1,026
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:15 am -
2 stops26h 37m
Thu 10/2911:05 am -
2 stops26h 25m
Deal found 9/9![Delta logo]()
$1,052
This American Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:10 am -
2 stops24h 32m
Fri 11/63:00 pm -
2 stops23h 00m
Deal found 9/8![American Airlines logo]()
$1,196
This Air Canada deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/228:20 pm -
2 stops32h 12m
Sun 12/273:15 pm -
1 stop23h 20m
Deal found 9/5![Air Canada logo]()
$1,753
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:30 am -
1 stop19h 05m
Thu 10/2910:50 am -
2 stops27h 15m
Deal found 9/9![United Airlines logo]()
$1,038
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:30 am -
2 stops23h 33m
Fri 10/232:27 pm -
2 stops23h 28m
Deal found 9/9![United Airlines logo]()
$1,039
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2211:20 am -
2 stops26h 57m
Fri 12/43:30 pm -
1 stop19h 50m
Deal found 9/9![United Airlines logo]()
$1,093
This Qantas Airways deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:40 pm -
2 stops21h 57m
Wed 10/218:40 am -
3 stops28h 50m
Deal found 9/7![Multiple Airlines logo]()
$1,510
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:15 am -
2 stops29h 55m
Mon 10/59:40 am -
2 stops28h 10m
Deal found 9/6![Delta logo]()
$1,738
This Qantas Airways deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:25 am -
3 stops24h 54m
Thu 10/291:55 pm -
2 stops22h 30m
Deal found 9/9![Multiple Airlines logo]()
$1,665
This oojo deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/229:40 pm -
1 stop20h 29m
Sun 12/276:20 pm -
1 stop30h 25m
Deal found 9/5![Multiple Airlines logo]()
$1,821
Last-minute flights from Sydney to SeattleDiscover last-minute flight deals from Sydney to Seattle. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Sydney to Seattle. Data last updated September 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:10 am -
1 stop23h 47m
Mon 10/197:10 am -
1 stop30h 55m
Deal found 9/5![American Airlines logo]()
$977
This Flighttix deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:10 am -
1 stop20h 57m
Wed 10/216:00 am -
2 stops32h 05m
Deal found 9/8![British Airways logo]()
$924
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:10 am -
1 stop30h 27m
Wed 10/213:10 pm -
2 stops22h 55m
Deal found 9/9![American Airlines logo]()
$942
This American Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1810:10 am -
1 stop20h 57m
Sun 10/254:37 pm -
1 stop22h 23m
Deal found 9/6![American Airlines logo]()
$983
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:15 pm -
2 stops22h 30m
Mon 10/268:00 pm -
1 stop40h 25m
Deal found 9/6![Multiple Airlines logo]()
$938
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:15 pm -
2 stops22h 30m
Wed 10/288:09 pm -
1 stop40h 16m
Deal found 9/6![Multiple Airlines logo]()
$886
This Flighttix deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:10 am -
2 stops22h 59m
Wed 10/285:00 am -
2 stops34h 00m
Deal found 9/6![British Airways logo]()
$905
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:10 am -
1 stop20h 57m
Wed 10/284:37 pm -
1 stop22h 23m
Deal found 9/5![American Airlines logo]()
$933
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:15 pm -
2 stops22h 30m
Thu 10/298:09 pm -
1 stop40h 16m
Deal found 9/7![Multiple Airlines logo]()
$890
One-way flights from Sydney to SeattleSearch for one-way flight options from Sydney to Seattle. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Sydney to Seattle. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:15 pm -
2 stops22h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/282:55 pm -
2 stops28h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$439
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:15 pm -
2 stops23h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/232:00 pm -
3 stops26h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$462
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/212:55 pm -
3 stops40h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$479
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:00 pm -
3 stops43h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/102:00 pm -
3 stops26h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$498
Find flight deals from Sydney to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $886 (Kiwi.com) |
One-way from | $428 (Kiwi.com) |
Popular in | December |
Cheapest in | March |
Average price | $1,098 |
Cheapflights Fare Finder
Customize your flight search to find flights from Sydney to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Sydney to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 2/22
11:20 am-6:54 pm
1 stop26h 34m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$629
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Thu 1/21
10:40 am-6:30 pm
2 stops26h 50m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$649
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 11/9
7:15 pm-2:51 pm
2 stops38h 36m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$707
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Tue 12/8
11:50 am-9:21 pm
2 stops28h 31m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$711
Quickest round-trip
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 12/7
11:50 am-12:12 pm
1 stop19h 22m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$711
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Wed 1/13
10:40 am-6:30 pm
2 stops26h 50m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$712
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 2/22
9:20 am-8:10 pm
3 stops53h 50m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$718
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Wed 12/9
9:15 am-10:51 pm
1 stop32h 36m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$722
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 10/12
10:30 am-4:03 pm
2 stops23h 33m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$723
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 11/2
9:20 am-5:57 pm
2 stops27h 37m
Seattle/Tacoma Intl
Tue 11/10
8:30 am-7:00 am
2 stops27h 30m
$985
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Sydney to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sydney to Seattle in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Sydney-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sydney-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sydney-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Sydney-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sydney-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
SYD-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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?
The best time to book flights from Sydney to Seattle is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Sydney to Seattle?
Currently, March is the cheapest month in which you can book a flight from Sydney to Seattle (average of $998). Flying from Sydney to Seattle in December is currently the most expensive (average of $1,251). 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 to fly round-trip from Sydney to Seattle?
Airfare is typical for this route at the moment.
Sydney to Seattle flights typically cost between $850 and $1,326 in October.The cheapest round-trip price found within the last 5 days was $886 on Multiple Airlines (Oct 21-Oct 28).
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated September 10, 2026.
Read through reviews of airlines operating flights from Sydney to Seattle, such as United Airlines and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from Sydney to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
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Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Sydney to Seattle by cabin class
Find flights from Sydney to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Sydney and Seattle flights
Browse other Sydney and Seattle flight options. Last updated on September 10, 2026.
Other flights from Sydney
Browse through other flights departing from Sydney. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Top 2 airlines flying from Sydney to Seattle
Discover the top 2 airlines that operate flights from Sydney to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$576 | Average$1,307 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$691 | Average$1,075 | FlexibilityNo cancel fee | On-time69% |