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Cheap flights from Seattle to Sydney from $604

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 14/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — SYD
4 Jun — 11 Jun1
1 adult
Tue 4/6
Tue 11/6

The best prices from Seattle/Tacoma Intl to Sydney Kingsford Smith are usually found in February or March, booked 61 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Seattle to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Sydney (SYD). 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 30 May 2024.

Popular in

June

Cheapest in

February

Average price

$1,893

Round-trip from

$189
High demand for flights, 15% potential price rise
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Best time to find cheap flights, 14% potential price drop
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Average for round-trip flights in May 2024
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From Seattle/Tacoma Intl to Sydney Kingsford Smith
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What is the cheapest day to fly return from Seattle to Sydney?

Users have found that flying from Seattle to Sydney on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save up to 40% on this flight, we recommend booking at least 37 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to Sydney from $1,744 1-2 weeks out and tickets from $2,129 for flights departing within the next 72 hours.

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

Flights from Seattle to Sydney lean towards being more expensive in June. Prices are generally better when you fly from Seattle to Sydney in February, with the cheapest ticket starting at $1,232.

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

A simple way to save on the total cost of your ticket is to fly from Seattle to Sydney in the morning. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight at midday.

Cheap Air Canada flights from Seattle to Sydney

Explore cheap flight options specifically provided by Air Canada for the route between Seattle and Sydney. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 539,242 searches. Data last updated 30 May 2024.
Check out some of the cheapest Air Canada flights we've come across from Seattle to Sydney. It's recommended that users confirm their flight details before booking.
Sun 17/1109:55SEA - SYD
1 stop28h 25mAir Canada
Sun 24/1111:20SYD - SEA
1 stop16h 56mAir Canada
Deal found 29/5$1,104
Sun 17/1109:55SEA - SYD
1 stop28h 25mAir Canada
Thu 21/1111:20SYD - SEA
1 stop26h 06mAir Canada
Deal found 30/5$1,167
Mon 11/1109:55SEA - SYD
1 stop28h 25mAir Canada
Tue 19/1111:20SYD - SEA
1 stop22h 11mAir Canada
Deal found 29/5$1,366
Thu 21/1115:20SEA - SYD
1 stop23h 00mAir Canada
Sat 30/1114:00SYD - SEA
2 stops38h 16mAir Canada
Deal found 28/5$1,563
Fri 22/1119:05SEA - SYD
1 stop19h 15mAir Canada
Tue 31/1211:20SYD - SEA
1 stop16h 56mAir Canada
Deal found 29/5$1,693
Fri 11/1019:05SEA - SYD
1 stop19h 15mAir Canada
Mon 21/1010:20SYD - SEA
1 stop20h 10mAir Canada
Deal found 29/5$1,937
Sat 16/1119:05SEA - SYD
1 stop19h 15mAir Canada
Sun 1/1211:20SYD - SEA
1 stop16h 56mAir Canada
Deal found 29/5$1,963
Sun 9/619:05SEA - SYD
1 stop19h 15mAir Canada
Fri 21/607:00SYD - SEA
2 stops20h 00mAir Canada
Deal found 29/5$3,748
Thu 6/619:05SEA - SYD
2 stops22h 35mAir Canada
Mon 17/607:00SYD - SEA
2 stops22h 27mAir Canada
Deal found 30/5$11,199

Cheap Hawaiian Airlines flights from Seattle to Sydney

Explore cheap flight options specifically provided by Hawaiian Airlines for the route between Seattle and Sydney. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 539,242 searches. Data last updated 30 May 2024.
Some of the best deals we've found on Hawaiian Airlines flights travelling from Seattle to Sydney. Deals frequently update to provide users with more options.
Sun 9/610:30SEA - SYD
2 stops40h 15mHawaiian Airlines
Sun 23/621:40SYD - SEA
2 stops41h 55mHawaiian Airlines
Deal found 29/5$1,901
Fri 14/610:30SEA - SYD
2 stops40h 15mHawaiian Airlines
Thu 20/621:40SYD - SEA
2 stops41h 55mHawaiian Airlines
Deal found 30/5$1,910
Fri 28/610:30SEA - SYD
2 stops40h 15mHawaiian Airlines
Fri 5/721:40SYD - SEA
1 stop17h 05mHawaiian Airlines
Deal found 29/5$2,034
Sun 9/610:30SEA - SYD
2 stops40h 15mHawaiian Airlines
Sun 23/621:40SYD - SEA
1 stop17h 05mHawaiian Airlines
Deal found 29/5$2,144
Wed 5/608:35SEA - SYD
1 stop18h 10mHawaiian Airlines
Sun 16/621:40SYD - SEA
1 stop17h 05mHawaiian Airlines
Deal found 29/5$9,179

Cheap Seattle to Sydney flights in May & June 2024

Find cheap flight options from Seattle to Sydney specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 539,242 searches. Prices were last updated on 30 May 2024.
The lowest fares we've come across on flights travelling from Seattle to Sydney in May and June 2024. For more flight deals, be sure to check back very soon.
Sun 2/615:30SEA - SYD
1 stop22h 30mUnited Airlines
Sun 16/610:20SYD - SEA
1 stop17h 20mUnited Airlines
Deal found 30/5$1,129
Sun 30/619:30SEA - SYD
1 stop18h 30mUnited Airlines
Wed 17/710:20SYD - SEA
1 stop21h 09mUnited Airlines
Deal found 29/5$1,146
Tue 25/616:25SEA - SYD
1 stop21h 30mUnited Airlines
Mon 12/810:20SYD - SEA
1 stop25h 02mUnited Airlines
Deal found 30/5$1,148
Tue 25/611:05SEA - SYD
2 stops26h 50mUnited Airlines
Mon 12/809:30SYD - SEA
1 stop19h 47mUnited Airlines
Deal found 29/5$1,154
Tue 18/605:05SEA - SYD
2 stops32h 50mUnited Airlines
Sun 23/609:30SYD - SEA
2 stops39h 32mUnited Airlines
Deal found 29/5$1,173
Thu 13/615:30SEA - SYD
1 stop22h 30mUnited Airlines
Mon 17/609:30SYD - SEA
1 stop19h 05mUnited Airlines
Deal found 28/5$1,209
Sat 29/615:35SEA - SYD
1 stop22h 25mUnited Airlines
Wed 17/710:20SYD - SEA
1 stop21h 09mUnited Airlines
Deal found 29/5$1,222
Tue 11/619:42SEA - SYD
1 stop18h 18mUnited Airlines
Fri 14/610:20SYD - SEA
1 stop17h 20mUnited Airlines
Deal found 30/5$1,223
Sat 8/611:00SEA - SYD
3 stops26h 55mUnited Airlines
Tue 11/609:30SYD - SEA
2 stops23h 22mUnited Airlines
Deal found 29/5$1,229

Seattle to Sydney 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Sydney in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 539,242 searches. Data last updated 30 May 2024.
The lowest fares we've come across on flights travelling from Seattle to Sydney in May and June 2024. For more flight deals, be sure to check back very soon.
Sun 17/1109:55SEA - SYD
1 stop28h 25mAir Canada
Sun 24/1111:20SYD - SEA
1 stop16h 56mAir Canada
Deal found 29/5$1,104
Sun 2/615:30SEA - SYD
1 stop22h 30mUnited Airlines
Sun 16/610:20SYD - SEA
1 stop17h 20mUnited Airlines
Deal found 30/5$1,129
Tue 10/919:45SEA - SYD
1 stop18h 15mUnited Airlines
Wed 18/910:20SYD - SEA
1 stop18h 26mUnited Airlines
Deal found 28/5$1,135
Sun 21/700:30SEA - SYD
2 stops37h 30mUnited Airlines
Sun 28/710:20SYD - SEA
1 stop31h 22mUnited Airlines
Deal found 29/5$1,137
Sun 30/619:30SEA - SYD
1 stop18h 30mUnited Airlines
Wed 17/710:20SYD - SEA
1 stop21h 09mUnited Airlines
Deal found 29/5$1,146
Tue 6/819:25SEA - SYD
1 stop18h 35mUnited Airlines
Wed 21/810:20SYD - SEA
1 stop19h 46mUnited Airlines
Deal found 30/5$1,148
Tue 25/611:05SEA - SYD
2 stops26h 50mUnited Airlines
Mon 12/809:30SYD - SEA
1 stop19h 47mUnited Airlines
Deal found 29/5$1,154
Sat 2/1118:19SEA - SYD
1 stop42h 01mUnited Airlines
Mon 11/1112:10SYD - SEA
1 stop22h 17mUnited Airlines
Deal found 29/5$1,157
Sun 17/1109:55SEA - SYD
1 stop28h 25mAir Canada
Thu 21/1111:20SYD - SEA
1 stop26h 06mAir Canada
Deal found 30/5$1,167

Seattle to Sydney flights leaving soon

Find last-minute flight options from Seattle to Sydney for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 539,242 searches. Data last updated 30 May 2024.
Have a look at some of the flights available from Seattle to Sydney departing last-minute. It's wise to confirm all flight details are correct before booking.
Sat 8/611:42SEA - SYD
1 stop26h 18mUnited Airlines
Tue 11/609:30SYD - SEA
1 stop19h 00mUnited Airlines
Deal found 29/5$1,222
Sat 8/611:00SEA - SYD
3 stops26h 55mUnited Airlines
Tue 11/609:30SYD - SEA
2 stops23h 22mUnited Airlines
Deal found 29/5$1,229
Sun 9/610:30SEA - SYD
2 stops40h 15mHawaiian Airlines
Sun 23/621:40SYD - SEA
2 stops41h 55mHawaiian Airlines
Deal found 29/5$1,901
Sun 9/610:30SEA - SYD
2 stops40h 15mHawaiian Airlines
Sun 23/621:40SYD - SEA
1 stop17h 05mHawaiian Airlines
Deal found 29/5$2,144
Sun 9/616:25SEA - SYD
1 stop21h 30mUnited Airlines
Sun 23/610:20SYD - SEA
1 stop17h 20mUnited Airlines
Deal found 29/5$2,153
Sun 9/605:05SEA - SYD
2 stops32h 50mUnited Airlines
Tue 25/609:30SYD - SEA
2 stops28h 50mUnited Airlines
Deal found 29/5$2,161
Sat 8/619:25SEA - SYD
1 stop18h 35mUnited Airlines
Wed 26/610:20SYD - SEA
1 stop17h 20mUnited Airlines
Deal found 29/5$2,229
Sun 9/617:40SEA - SYD
1 stop19h 55mDelta
Thu 20/609:25SYD - SEA
1 stop20h 11mDelta
Deal found 29/5$2,355
Sat 8/618:14SEA - SYD
2 stops34h 56mFiji Airways
Sat 22/614:40SYD - SEA
2 stops50h 19mFiji Airways
Deal found 29/5$2,990

One-way flights to Sydney from Seattle

Search for one-way flight options from Seattle to Sydney. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 539,242 searches. Data last updated 30 May 2024.
Some of the best available deals we've found on one-way flights from Seattle to Sydney. Those needing a return flight from Seattle to Sydney can use the search form above.
Wed 14/818:29SEA - SYD
1 stop27h 11mMultiple Airlines
Deal found 30/5$604
Wed 30/1017:59SEA - SYD
1 stop27h 36mMultiple Airlines
Deal found 30/5$645
Sun 18/806:00SEA - SYD
2 stops39h 40mMultiple Airlines
Deal found 30/5$675
Sun 18/818:29SEA - SYD
1 stop27h 11mMultiple Airlines
Deal found 30/5$687
Fri 1/1107:40SEA - SYD
1 stop37h 55mMultiple Airlines
Deal found 30/5$791
Fri 30/808:45SEA - SYD
1 stop36h 55mMultiple Airlines
Deal found 29/5$811
Fri 25/1007:40SEA - SYD
1 stop38h 00mMultiple Airlines
Deal found 30/5$939
Fri 1/1110:10SEA - SYD
2 stops35h 25mMultiple Airlines
Deal found 30/5$960
Mon 14/1007:40SEA - SYD
1 stop38h 00mMultiple Airlines
Deal found 29/5$995

Find flights from Seattle to Sydney within your budget

Customise your flight search to find flights from Seattle to Sydney 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 539,242 searches. Data last updated 30 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,104 - $2,067

Route

Depart

Return

Price

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 17/11

1 stop28h 25m

Sydney Kingsford Smith

Sun 24/11

1 stop16h 56m

$1,104

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 3/11

1 stop22h 23m

Sydney Kingsford Smith

Mon 25/11

1 stop17h 52m

$1,129

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 4/11

2 stops28h 10m

Sydney Kingsford Smith

Mon 25/11

2 stops24h 27m

$1,268

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 28/6

2 stops35h 10m

Sydney Kingsford Smith

Fri 5/7

1 stop22h 25m

$1,483

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 11/10

1 stop40h 05m

Sydney Kingsford Smith

Sun 20/10

1 stop25h 45m

$1,501

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 5/11

2 stops29h 35m

Sydney Kingsford Smith

Wed 27/11

2 stops25h 01m

$1,839

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 9/6

2 stops40h 15m

Sydney Kingsford Smith

Sun 23/6

2 stops41h 55m

$1,901

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 17/11

1 stop26h 21m

Sydney Kingsford Smith

Sat 30/11

1 stop24h 13m

$1,939

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 4/8

2 stops33h 25m

Sydney Kingsford Smith

Sun 18/8

2 stops31h 00m

$2,067

Flights are sorted by cheapest first

Deals found on 29/5

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

Use this chart to determine the optimal time to book a return flight from Seattle to Sydney. Price data was last updated on 24 May 2024.
The price you pay for your flight from Seattle to Sydney may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

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

Use this chart to determine the cheapest time to fly return from Seattle to Sydney. Price data was last updated on 26 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their Seattle to Sydney flight should consider departing on Friday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Seattle to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Seattle 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.

Temperature and rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average temperature and rainfall totals by month.

SYD

Temperature

11 - 22 °C

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated 30 May 2024.
To help decide which airline to fly from Seattle to Sydney, see what other customers have to say about Air Canada, Hawaiian Airlines and Qantas Airways. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.5
Very Good
914 reviews
Check prices

Crew

8.8

Entertainment

8.0

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

Got me there and back on time. Except for a 30 min maintenance delay, but that meant more time for nap. Crew was super nice.

ANA
8.5
Very Good
914 reviews
ANA
8.5
Very Good
914 reviews
Check prices

Crew

8.8

Entertainment

8.0

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

Got me there and back on time. Except for a 30 min maintenance delay, but that meant more time for nap. Crew was super nice.

Asiana Airlines
8.4
Very Good
573 reviews
ANA
8.5
Very Good
914 reviews
Check prices

Crew

8.8

Entertainment

8.0

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

Got me there and back on time. Except for a 30 min maintenance delay, but that meant more time for nap. Crew was super nice.

China Airlines
8.3
Very Good
896 reviews
ANA
8.5
Very Good
914 reviews
Check prices

Crew

8.8

Entertainment

8.0

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

Got me there and back on time. Except for a 30 min maintenance delay, but that meant more time for nap. Crew was super nice.

Air New Zealand
8.3
Very Good
610 reviews
ANA
8.5
Very Good
914 reviews
Check prices

Crew

8.8

Entertainment

8.0

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

Got me there and back on time. Except for a 30 min maintenance delay, but that meant more time for nap. Crew was super nice.

Delta
8.0
Very Good
10,430 reviews
ANA
8.5
Very Good
914 reviews
Check prices

Crew

8.8

Entertainment

8.0

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

Got me there and back on time. Except for a 30 min maintenance delay, but that meant more time for nap. Crew was super nice.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Seattle to Sydney for under $1,200 on Cheapflights?

    Yes, there are multiple flights from Seattle to Sydney for under $1,200. The cheapest flight booked recently is on Air Canada for just $1,104, but on average you can expect to pay $1,184.

  • Are there last-minute flights available from Seattle to Sydney for under $1,300?

    There are currently 20+ open flights from Seattle to Sydney within the next 7 days for less than $1,300.

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

    Flying on Air Canada is currently your cheapest option to Sydney, with prices starting at $1,104. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $1,129 and $1,268, respectively. Users have found that Air Canada is 38% cheaper than the other options available to this destination.

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

    The cheapet airlines for a one-way flight from Seattle to Sydney are Hawaiian Airlines ($1,042), Philippine Airlines ($1,161), and Fiji Airways ($1,274).

  • What does SEA to SYD mean?

    This is defined as Seattle/Tacoma Intl Airport (SEA) and Sydney Kingsford Smith Airport (SYD). Codes like Sydney Kingsford Smith Airport are often used to just call airports uniquely.

  • Can I find deals for flights from Seattle to Sydney that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Sydney flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Sydney with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Sydney flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

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

  • Can I find deals for flights from Seattle to Sydney that allow pets onboard?

    Many airlines flying from Seattle to Sydney offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Sydney?

    Yes, you can often find last-minute deals on Seattle to Sydney flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Sydney flight deals updated?

    The Seattle to Sydney flight deals you see on this page were last updated on 30/5.

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

    Currently, August is the cheapest month in which you can book a flight from Seattle to Sydney (average of $125). Flying from Seattle to Sydney in December is currently the most expensive (average of $167). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Sydney
See prices for flight routes from nearby airports that may be better suited for you.

Portland to Sydney flights
Spokane to Sydney flights
Portland to Coolangatta flights
Seattle to Coolangatta flights

Top 2 airlines flying from Seattle to Sydney

Discover the top 2 airlines that operate flights from Seattle to Sydney. 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 539,242 searches. Data last updated 30 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,208Average$1,658FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,283Average$1,686FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from Seattle to Sydney by cabin class

Find flights from Seattle to Sydney, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
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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 Seattle to Sydney?

Deals for Seattle to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Sydney for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Sydney from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on Seattle to Sydney 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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