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Cheap flights from Sydney to Seattle from $762

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
21 Nov — 28 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Seattle/Tacoma Intl are usually found in August or September, booked 52 days in advance, depart on a Thursday or Tuesday and return on a Monday

Cheap 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 22 October 2025.

Round-trip from

$1,342

One-way from

$762

Popular in

July

Cheapest in

August

Average price

$1,543
Asiana Airlines
  • Asiana Airlines
  • 25/2-4/3
  • 2 total stops
  • 59h 45m total
  • Sydney to Seattle
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1/2
  • 1/2
  • 2 total stops
  • 39h 12m total
  • Sydney to Seattle
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($60 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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Find flight deals from Sydney to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Seattle
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 22 October 2025.

Fri 14/1121:40SYD - SEA
1 stop29h 00mMultiple Airlines
Sat 29/1115:40SEA - SYD
1 stop33h 35mMultiple Airlines
Deal found 20/10$1,364
Tue 18/1121:40SYD - SEA
2 stops28h 35mMultiple Airlines
Wed 3/1215:40SEA - SYD
1 stop33h 35mMultiple Airlines
Deal found 21/10$1,418
Thu 4/1221:40SYD - SEA
1 stop26h 35mHawaiian Airlines
Sat 24/107:00SEA - SYD
1 stop17h 45mHawaiian Airlines
Deal found 21/10$1,423
Tue 9/1221:40SYD - SEA
1 stop26h 35mHawaiian Airlines
Mon 29/1207:00SEA - SYD
1 stop17h 45mHawaiian Airlines
Deal found 22/10$1,470
Thu 4/1221:40SYD - SEA
1 stop26h 35mHawaiian Airlines
Fri 23/109:55SEA - SYD
1 stop38h 50mHawaiian Airlines
Deal found 22/10$1,489
Tue 2/1221:40SYD - SEA
1 stop36h 00mHawaiian Airlines
Sat 24/107:00SEA - SYD
1 stop17h 45mHawaiian Airlines
Deal found 21/10$1,498
Thu 11/1221:40SYD - SEA
2 stops18h 52mHawaiian Airlines
Mon 29/1207:00SEA - SYD
1 stop17h 45mHawaiian Airlines
Deal found 22/10$1,516
Fri 7/1114:00SYD - SEA
2 stops22h 05mMultiple Airlines
Tue 11/1114:59SEA - SYD
2 stops26h 31mMultiple Airlines
Deal found 20/10$1,518

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 22 October 2025.
Use the filters below to find and compare flights from Sydney to Seattle that are best for you.

Fly from

Sydney

Fly to

Seattle

Route

Depart

Return

Price

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 4/12

21:40-05:15

1 stop26h 35m

Seattle/Tacoma Intl

Sat 24/1

07:00-19:45

1 stop17h 45m

$1,423

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 11/3

10:20-14:55

1 stop22h 35m

Seattle/Tacoma Intl

Sat 14/3

00:10-08:20

1 stop38h 10m

$1,480

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 20/11

21:40-05:17

2 stops26h 37m

Seattle/Tacoma Intl

Fri 28/11

07:00-19:45

1 stop17h 45m

$1,530

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 11/12

21:40-21:32

2 stops18h 52m

Seattle/Tacoma Intl

Mon 29/12

07:00-19:45

1 stop17h 45m

$1,533

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 9/12

21:40-05:15

1 stop26h 35m

Seattle/Tacoma Intl

Mon 29/12

07:00-19:45

1 stop17h 45m

$1,549

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 20/11

21:40-05:35

1 stop26h 55m

Seattle/Tacoma Intl

Fri 28/11

07:00-19:45

1 stop17h 45m

$1,558

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 17/11

13:55-16:56

2 stops22h 01m

Seattle/Tacoma Intl

Tue 2/12

14:59-08:45

2 stops22h 46m

$1,560

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 7/11

21:40-23:21

1 stop20h 41m

Seattle/Tacoma Intl

Tue 11/11

15:55-19:45

1 stop32h 50m

$1,567

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 6/2

14:10-10:22

2 stops39h 12m

$762

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 2/3

14:10-12:16

3 stops41h 06m

$801

Flights are sorted by cheapest return flights first.

Deals found on 21/10

Showing 1-10 of 18 results
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
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?

Use this chart to determine the optimal time to book a return flight from Sydney to Seattle. Price data was last updated on 17 October 2025.

Booking 52 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, June is the cheapest month in which you can book a flight from Sydney to Seattle (average of $1,093). Flying from Sydney to Seattle in April is currently the most expensive (average of $1,356). 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.

What is the cheapest time of day to fly from SYD to SEA?

Find hourly flight availability from Sydney to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 October 2025.

One of the essential ways to save on airfare from Sydney to Seattle is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at midday could potentially save you up to 18% on airfare.

What is the cheapest day to fly from Sydney to Seattle?

Use this chart to determine the cheapest time to fly return from Sydney to Seattle. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Sydney to Seattle flight should consider departing on Saturday at midday when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

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 22 October 2025.
See what other customers who have flown with Hawaiian Airlines, Virgin Australia, andQantas Airways 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.
Hawaiian Airlines
7.8
Good
2,788 reviews
Check prices

Crew

8.5

Entertainment

7.1

Boarding

8.0

Overall

7.8

Food

7.0

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

LAX - DCA

I booked my flight through Kayak, a third-party website, and paid extra for reserved seating. A few days before our trip, Alaska Airlines emailed to let me know that it had changed our reserved seats and separated us. I was traveling with my son who has a disability and we needed seats next to each other. So, I called Alaska and talked to an agent but she refused to give our seats back together. She blamed me for buying my tickets through a third party and said that this wouldn't have happened if I brought directly from Alaska Airlines. I was appalled by the agent's lack of empathy and ignorance of what my son's disability entails. Even though I tried explaining to her that one of the manifestations of my son's disability is high anxiety and that anxiety sky-rockets when he's in crowded places or is taken out of his routines, she just could not care less.
Hawaiian Airlines
7.8
Good
2,788 reviews
Hawaiian Airlines
7.8
Good
2,788 reviews
Check prices

Crew

8.5

Entertainment

7.1

Boarding

8.0

Overall

7.8

Food

7.0

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

LAX - DCA

I booked my flight through Kayak, a third-party website, and paid extra for reserved seating. A few days before our trip, Alaska Airlines emailed to let me know that it had changed our reserved seats and separated us. I was traveling with my son who has a disability and we needed seats next to each other. So, I called Alaska and talked to an agent but she refused to give our seats back together. She blamed me for buying my tickets through a third party and said that this wouldn't have happened if I brought directly from Alaska Airlines. I was appalled by the agent's lack of empathy and ignorance of what my son's disability entails. Even though I tried explaining to her that one of the manifestations of my son's disability is high anxiety and that anxiety sky-rockets when he's in crowded places or is taken out of his routines, she just could not care less.
Virgin Australia
7.6
Good
421 reviews
Hawaiian Airlines
7.8
Good
2,788 reviews
Check prices

Crew

8.5

Entertainment

7.1

Boarding

8.0

Overall

7.8

Food

7.0

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

LAX - DCA

I booked my flight through Kayak, a third-party website, and paid extra for reserved seating. A few days before our trip, Alaska Airlines emailed to let me know that it had changed our reserved seats and separated us. I was traveling with my son who has a disability and we needed seats next to each other. So, I called Alaska and talked to an agent but she refused to give our seats back together. She blamed me for buying my tickets through a third party and said that this wouldn't have happened if I brought directly from Alaska Airlines. I was appalled by the agent's lack of empathy and ignorance of what my son's disability entails. Even though I tried explaining to her that one of the manifestations of my son's disability is high anxiety and that anxiety sky-rockets when he's in crowded places or is taken out of his routines, she just could not care less.
Qantas Airways
7.5
Good
922 reviews
Hawaiian Airlines
7.8
Good
2,788 reviews
Check prices

Crew

8.5

Entertainment

7.1

Boarding

8.0

Overall

7.8

Food

7.0

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

LAX - DCA

I booked my flight through Kayak, a third-party website, and paid extra for reserved seating. A few days before our trip, Alaska Airlines emailed to let me know that it had changed our reserved seats and separated us. I was traveling with my son who has a disability and we needed seats next to each other. So, I called Alaska and talked to an agent but she refused to give our seats back together. She blamed me for buying my tickets through a third party and said that this wouldn't have happened if I brought directly from Alaska Airlines. I was appalled by the agent's lack of empathy and ignorance of what my son's disability entails. Even though I tried explaining to her that one of the manifestations of my son's disability is high anxiety and that anxiety sky-rockets when he's in crowded places or is taken out of his routines, she just could not care less.
United Airlines
7.4
Good
8,990 reviews
Hawaiian Airlines
7.8
Good
2,788 reviews
Check prices

Crew

8.5

Entertainment

7.1

Boarding

8.0

Overall

7.8

Food

7.0

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

LAX - DCA

I booked my flight through Kayak, a third-party website, and paid extra for reserved seating. A few days before our trip, Alaska Airlines emailed to let me know that it had changed our reserved seats and separated us. I was traveling with my son who has a disability and we needed seats next to each other. So, I called Alaska and talked to an agent but she refused to give our seats back together. She blamed me for buying my tickets through a third party and said that this wouldn't have happened if I brought directly from Alaska Airlines. I was appalled by the agent's lack of empathy and ignorance of what my son's disability entails. Even though I tried explaining to her that one of the manifestations of my son's disability is high anxiety and that anxiety sky-rockets when he's in crowded places or is taken out of his routines, she just could not care less.
Air Canada
7.1
Good
10,342 reviews
Hawaiian Airlines
7.8
Good
2,788 reviews
Check prices

Crew

8.5

Entertainment

7.1

Boarding

8.0

Overall

7.8

Food

7.0

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

LAX - DCA

I booked my flight through Kayak, a third-party website, and paid extra for reserved seating. A few days before our trip, Alaska Airlines emailed to let me know that it had changed our reserved seats and separated us. I was traveling with my son who has a disability and we needed seats next to each other. So, I called Alaska and talked to an agent but she refused to give our seats back together. She blamed me for buying my tickets through a third party and said that this wouldn't have happened if I brought directly from Alaska Airlines. I was appalled by the agent's lack of empathy and ignorance of what my son's disability entails. Even though I tried explaining to her that one of the manifestations of my son's disability is high anxiety and that anxiety sky-rockets when he's in crowded places or is taken out of his routines, she just could not care less.

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.

  • How long is the flight from Sydney to Seattle?

    Airlines like Hawaiian Airlines, Asiana Airlines, and Alaska Airlines fly from Sydney to Seattle in about 22h 35m. The time it takes to get you to your destination can typically vary by up to 4h 02m. Airlines will cover a distance of 12463 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at $1,160, Alaska Airlines will fly you from Sydney to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Air Canada - these airlines can fly you to your destination from $1,168 and $1,190, respectively. Users have found that Alaska Airlines is 31% cheaper than the other options available to this destination.

  • 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 San Francisco.

  • What are some popular things to do or see while on a stopover in San Francisco?

    If you're on a stopover in San Francisco and looking for things to do, consider visiting Fisherman's Wharf, Union Square, or Ghirardelli Square. Fisherman's Wharf, Union Square and Ghirardelli Square are located about 21.0 km, 18.7 km, and 20.8 km, respectively from San Francisco if you are interested in checking them out. Those looking to explore during their stopover in San Francisco can hire a car from San Francisco for about $61 per day.

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

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

  • 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, June is the cheapest month in which you can book a flight from Sydney to Seattle (average of $1,093). Flying from Sydney to Seattle in April is currently the most expensive (average of $1,356). 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?

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Fly from Sydney to Seattle on these airlines

Choose from the following airlines for your flight from Sydney to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 22 October 2025.
Air Canada flights from Sydney Kingsford Smith to Seattle/Tacoma Intl
Hawaiian Airlines flights from Sydney Kingsford Smith to Seattle/Tacoma Intl

Top 10 airlines flying from Sydney to Seattle

Discover the top 10 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 647,157 searches. Data last updated 22 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$1,160Average$1,787FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapest$1,168Average$2,140FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest$1,190Average$1,584FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,223Average$1,603FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Hawaiian AirlinesCheapest$1,250Average$1,865FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Qantas AirwaysCheapest$1,275Average$1,512FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Philippine AirlinesCheapest$1,337Average$1,530FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Air New ZealandCheapest$1,382Average$1,501FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Singapore AirlinesCheapest$1,462Average$1,502FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Asiana AirlinesCheapest$1,493Average$1,644FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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