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 $1,437. Additional round-trip tickets that might be worth considering are offered by Philippine Airlines and ANA, with the lowest prices starting at $1,583 and $1,727, respectively. Users have found that Air Canada is 19% cheaper than the other options available to this destination. Find deals

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 United Airlines ($949), Air Canada ($1,183), and Hainan Airlines ($1,408). Find deals

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

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

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

Users have found that flying from Seattle to Sydney on a Friday 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 34% on this flight, we recommend booking at least 38 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 $1,551 1-2 weeks out and tickets from $1,800 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 December. Prices are generally better when you fly from Seattle to Sydney in March, with the cheapest ticket starting at $1,251.

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.

$949+ Flights from Seattle to Sydney

The best prices from Seattle/Tacoma Intl to Sydney Kingsford Smith are usually found in March or April, booked 37 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from Seattle to Sydney

Round-trip from	$1,432
One-way from	$949
Popular in	December
Cheapest in	March
Average price	$2,370

Air Canada
2/2-12/2
3 total stops
48h 45m total
Seattle to Sydney

Search Deals

United Airlines
26/1
1 total stop
25h 25m total
Seattle to Sydney

Search Deals

High demand for flights, 9% potential price rise

Search Deals

Best time to find cheap flights, 3% potential price drop

Search Deals

Average for round-trip flights in December 2024

Search Deals

Find flight deals from Seattle to Sydney

Cheapest flights from Seattle to Sydney
Explore the most affordable flight options available from Seattle to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 December 2024.

Tue 24/1218:13SEA - SYD

1 stop41h 07mUnited Airlines

Fri 3/112:10SYD - SEA

1 stop28h 05mUnited Airlines

Deal found 18/12$2,261

Sun 29/1215:05SEA - SYD

2 stops35h 40mMultiple Airlines

Wed 8/107:05SYD - SEA

2 stops30h 25mMultiple Airlines

Deal found 18/12$2,835

Fri 27/1212:45SEA - SYD

1 stop24h 35mAsiana Airlines

Sat 8/210:20SYD - SEA

1 stop43h 35mAsiana Airlines

Deal found 18/12$3,104

Fri 27/1218:13SEA - SYD

1 stop20h 02mAir New Zealand

Sat 8/219:15SYD - SEA

2 stops45h 45mAir New Zealand

Deal found 18/12$3,801

Fri 27/1206:21SEA - SYD

2 stops37h 34mQantas Airways

Sun 5/111:15SYD - SEA

1 stop26h 37mQantas Airways

Deal found 18/12$4,315

Thu 26/1215:59SEA - SYD

3 stops26h 01mFiji Airways

Sat 18/115:20SYD - SEA

2 stops24h 00mFiji Airways

Deal found 18/12$4,529

Fri 27/1210:40SEA - SYD

1 stop25h 15mKorean Air

Sun 5/109:10SYD - SEA

1 stop23h 09mKorean Air

Deal found 18/12$4,705

Mon 23/1219:15SEA - SYD

2 stops31h 30mAir Canada

Fri 3/109:00SYD - SEA

2 stops19h 50mAir Canada

Deal found 18/12$4,872

Sun 29/1200:10SEA - SYD

1 stop41h 00mChina Airlines

Mon 6/122:10SYD - SEA

1 stop39h 05mChina Airlines

Deal found 18/12$6,168

Tue 24/1215:59SEA - SYD

2 stops33h 51mCathay Pacific

Fri 31/108:45SYD - SEA

2 stops44h 55mCathay Pacific

Deal found 18/12$7,117

Fri 27/1219:00SEA - SYD

2 stops44h 20mTurkish Airlines

Fri 3/107:15SYD - SEA

3 stops76h 50mTurkish Airlines

Deal found 18/12$7,538

Fri 20/1222:35SEA - SYD

1 stop39h 55mPhilippine Airlines

Fri 10/111:10SYD - SEA

1 stop26h 00mPhilippine Airlines

Deal found 18/12$10,921

Best flights from Seattle to Sydney
Discover carefully curated flight deals from Seattle to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 December 2024.

Sun 2/219:05SEA - SYD

2 stops26h 35mMultiple Airlines

Wed 12/211:20SYD - SEA

1 stop22h 10mMultiple Airlines

Deal found 17/12$1,432

Sun 2/219:05SEA - SYD

2 stops26h 35mAir Canada

Mon 10/211:20SYD - SEA

1 stop17h 30mAir Canada

Deal found 18/12$1,437

Wed 5/322:35SEA - SYD

1 stop39h 55mPhilippine Airlines

Wed 19/311:10SYD - SEA

1 stop26h 00mPhilippine Airlines

Deal found 18/12$1,583

Sat 17/513:45SEA - SYD

2 stops26h 40mANA

Mon 26/511:50SYD - SEA

2 stops23h 43mANA

Deal found 18/12$1,727

Mon 10/214:00SEA - SYD

1 stop23h 35mDelta

Mon 3/314:15SYD - SEA

1 stop28h 16mDelta

Deal found 18/12$1,780

Mon 27/107:00SEA - SYD

1 stop29h 00mUnited Airlines

Tue 4/316:15SYD - SEA

1 stop21h 14mUnited Airlines

Deal found 18/12$1,795

Thu 20/207:00SEA - SYD

1 stop17h 45mHawaiian Airlines

Sat 8/321:40SYD - SEA

1 stop18h 20mHawaiian Airlines

Deal found 18/12$1,810

Last-minute flights from Seattle to Sydney
Discover last-minute flight deals from Seattle to Sydney. Data last updated 19 December 2024 and is based on user searches.

Tue 24/1218:13SEA - SYD

1 stop41h 07mUnited Airlines

Fri 3/112:10SYD - SEA

1 stop28h 05mUnited Airlines

Deal found 18/12$2,261

Tue 24/1215:59SEA - SYD

2 stops33h 51mCathay Pacific

Fri 31/108:45SYD - SEA

2 stops44h 55mCathay Pacific

Deal found 18/12$7,117

Tue 24/1218:50SEA - SYD

2 stops41h 05mBritish Airways

Fri 31/116:20SYD - SEA

3 stops47h 40mBritish Airways

Deal found 18/12$34,967

Wed 25/1219:15SEA - SYD

2 stops27h 50mAir Canada

Fri 3/109:00SYD - SEA

2 stops19h 50mAir Canada

Deal found 18/12$6,510

Thu 26/1215:59SEA - SYD

3 stops26h 01mFiji Airways

Sat 18/115:20SYD - SEA

2 stops24h 00mFiji Airways

Deal found 18/12$4,529

Fri 27/1212:45SEA - SYD

1 stop24h 35mAsiana Airlines

Sat 8/210:20SYD - SEA

1 stop43h 35mAsiana Airlines

Deal found 18/12$3,104

Fri 27/1218:13SEA - SYD

1 stop20h 02mAir New Zealand

Sat 8/219:15SYD - SEA

2 stops45h 45mAir New Zealand

Deal found 18/12$3,801

Fri 27/1206:21SEA - SYD

2 stops37h 34mQantas Airways

Sun 5/111:15SYD - SEA

1 stop26h 37mQantas Airways

Deal found 18/12$4,315

Fri 27/1210:40SEA - SYD

1 stop25h 15mKorean Air

Sun 5/109:10SYD - SEA

1 stop23h 09mKorean Air

Deal found 18/12$4,705

Fri 27/1219:00SEA - SYD

2 stops44h 20mTurkish Airlines

Fri 3/107:15SYD - SEA

3 stops76h 50mTurkish Airlines

Deal found 18/12$7,538

Sun 29/1215:05SEA - SYD

2 stops35h 40mMultiple Airlines

Wed 8/107:05SYD - SEA

2 stops30h 25mMultiple Airlines

Deal found 18/12$2,835

Sun 29/1200:10SEA - SYD

1 stop41h 00mChina Airlines

Mon 6/122:10SYD - SEA

1 stop39h 05mChina Airlines

Deal found 18/12$6,168

One-way flights from Seattle to Sydney
Search for one-way flight options from Seattle to Sydney. Find affordable one-way fares based on user searches. Data last updated 19 December 2024.

Sun 26/112:50SEA - SYD

1 stop25h 25mUnited Airlines

Deal found 18/12$949

Fri 10/119:05SEA - SYD

2 stops31h 40mMultiple Airlines

Deal found 18/12$1,083

Mon 20/119:05SEA - SYD

2 stops24h 35mAir Canada

Deal found 18/12$1,183

Thu 16/110:00SEA - SYD

2 stops33h 55mHainan Airlines

Deal found 19/12$1,408

Thu 27/214:23SEA - SYD

3 stops27h 37mFiji Airways

Deal found 18/12$1,473

Wed 15/107:00SEA - SYD

1 stop17h 45mHawaiian Airlines

Deal found 18/12$1,557

Tue 25/200:10SEA - SYD

1 stop41h 00mChina Airlines

Deal found 18/12$1,561

Tue 11/211:59SEA - SYD

3 stops37h 41mAir Tahiti Nui

Deal found 18/12$1,746

Wed 15/119:00SEA - SYD

3 stops64h 15mTurkish Airlines

Deal found 18/12$1,935

Wed 26/311:55SEA - SYD

3 stops49h 00mBritish Airways

Deal found 18/12$12,787

Find flights from Seattle to Sydney within your budget

Fly from

Fly to

Route

Depart

Return

Price

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/2

19:05-16:40

2 stops26h 35m

Sydney Kingsford Smith

Wed 12/2

11:20-14:30

1 stop22h 10m

$1,432

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/2

19:05-16:40

2 stops26h 35m

Sydney Kingsford Smith

Mon 10/2

11:20-09:50

1 stop17h 30m

$1,437

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 5/3

22:35-09:30

1 stop39h 55m

Sydney Kingsford Smith

Wed 19/3

11:10-19:10

1 stop26h 00m

$1,583

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 17/5

13:45-09:25

2 stops26h 40m

Sydney Kingsford Smith

Mon 26/5

11:50-18:33

2 stops23h 43m

$1,727

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 10/2

14:00-08:35

1 stop23h 35m

Sydney Kingsford Smith

Mon 3/3

14:15-23:31

1 stop28h 16m

$1,780

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 27/1

07:00-07:00

1 stop29h 00m

Sydney Kingsford Smith

Tue 4/3

16:15-18:29

1 stop21h 14m

$1,795

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 20/2

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Sat 8/3

21:40-21:00

1 stop18h 20m

$1,810

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 26/1

12:50-09:15

1 stop25h 25m

$949

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 10/1

19:05-21:45

2 stops31h 40m

$1,083

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 20/1

19:05-14:40

2 stops24h 35m

$1,183

Flights are sorted by cheapest return flights first.

Deals found on 18/12

Showing 1-10 of 17 results

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.

Travel insights for flights from Seattle to Sydney

Get recent, data-driven insights about flights from Seattle to Sydney including ideal travel times, pricing trends, and more.

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

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 37 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from Seattle to Sydney (average of $129). Flying from Seattle to Sydney in October is currently the most expensive (average of $171). 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 SEA to SYD?

A simple way to save on the total cost of your ticket is to fly from Seattle to Sydney at midday. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the morning.

Rainfall in Sydney by month

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Sydney

To help decide which airline to fly from Seattle to Sydney, see what other customers have to say about United Airlines and Air Canada. 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.

Air Tahiti Nui

8.6

Very Good

65 reviews

Check prices

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui

8.6

Very Good

65 reviews

Air Tahiti Nui

8.6

Very Good

65 reviews

Check prices

Reviews

1 / 2

ANA

8.4

Very Good

839 reviews

Air Tahiti Nui

8.6

Very Good

65 reviews

Check prices

Reviews

1 / 2

China Airlines

8.3

Very Good

754 reviews

Air Tahiti Nui

8.6

Very Good

65 reviews

Check prices

Reviews

1 / 2

Fiji Airways

8.1

Very Good

191 reviews

Air Tahiti Nui

8.6

Very Good

65 reviews

Check prices

Reviews

1 / 2

Delta

8.0

Very Good

8,604 reviews

Air Tahiti Nui

8.6

Very Good

65 reviews

Check prices

Reviews

1 / 2

Related info for your journey

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 $1,437. Additional round-trip tickets that might be worth considering are offered by Philippine Airlines and ANA, with the lowest prices starting at $1,583 and $1,727, respectively. Users have found that Air Canada is 19% 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 United Airlines ($949), Air Canada ($1,183), and Hainan Airlines ($1,408).
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.
What is the cheapest month to book a flight from Seattle to Sydney?
Currently, May is the cheapest month in which you can book a flight from Seattle to Sydney (average of $129). Flying from Seattle to Sydney in October is currently the most expensive (average of $171). 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

Alternative routes for Seattle to Sydney

Portland to Sydney flights

Seattle to Coolangatta flights

Spokane to Sydney flights

Portland to Coolangatta flights

Other flights to Sydney

Top 2 airlines flying from Seattle to Sydney

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,197	Average$1,561	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,270	Average$1,593	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

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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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Seattle to Sydney from $949

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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Seattle/Tacoma Intl to Sydney Kingsford Smith are usually found in March or April, booked 37 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from Seattle to Sydney

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Sydney

Cheapest flights from Seattle to SydneyExplore the most affordable flight options available from Seattle to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 December 2024.

Explore the most affordable flight options available from Seattle to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 December 2024.

Find flights from Seattle to Sydney within your budget

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.

Travel insights for flights from Seattle to Sydney

Get recent, data-driven insights about flights from Seattle to Sydney including ideal travel times, pricing trends, and more.

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 13 December 2024.

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

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

Find hourly flight availability from Seattle to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 December 2024.

Rainfall in Sydney by month

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

Temperature in Sydney by month

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

Reviews of airlines servicing Sydney

To help decide which airline to fly from Seattle to Sydney, see what other customers have to say about United Airlines and Air Canada. 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.

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.

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

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

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

How can I find direct flights from Seattle to Sydney?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Seattle to Sydney

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?

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

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

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

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Cheapest flights from Seattle to Sydney
Explore the most affordable flight options available from Seattle to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 December 2024.