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$669+ Cheap flights from Seattle (SEA) to Sydney, NS (YQY)

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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YQY
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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 (YQY). 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 May 1, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$669
(Gotogate)
Provider with most accurate pricing for Seattle/Tacoma Intl-Sydney flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sydney flights.
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From Seattle/Tacoma Intl to Sydney
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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 May 1, 2025.

This Gotogate deal was found by Cheapflights users on 4/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/147:15 pmSEA - YQY
2 stops24h 44mAir Canada
Sat 6/215:10 amYQY - SEA
1 stop9h 41mAir Canada
Deal found 4/30$669
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/141:45 pmSEA - YQY
3 stops30h 14mMultiple Airlines
Sat 6/217:40 pmYQY - SEA
2 stops17h 41mMultiple Airlines
Deal found 4/30$677
This Justfly.com deal was found by Cheapflights users on 4/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/232:05 pmSEA - YQY
1 stop24h 46mWestJet
Sat 6/287:40 pmYQY - SEA
2 stops20h 51mWestJet
Deal found 4/30$767

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Seattle to Sydney that are best for you.

Fly from

Seattle

Fly to

Sydney

Route

Depart

Return

Price

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Sat 6/14

7:15 pm-11:59 pm

2 stops24h 44m

Sydney

Sat 6/21

5:10 am-10:51 am

1 stop9h 41m

$669

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Sat 6/14

1:45 pm-11:59 pm

3 stops30h 14m

Sydney

Sat 6/21

7:40 pm-9:21 am

2 stops17h 41m

$677

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Mon 6/23

2:05 pm-6:51 pm

1 stop24h 46m

Sydney

Sat 6/28

7:40 pm-12:31 pm

2 stops20h 51m

$767

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

  • Most accurate provider: When it comes to deals on Seattle-Sydney, Nova Scotia flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Seattle-Sydney, Nova Scotia flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Seattle-Sydney, Nova Scotia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Sydney, Nova Scotia flights, Cheapflights users trust Expedia the most. Expedia 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 Seattle-Sydney, Nova Scotia 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 Seattle to Sydney

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

Rainfall in Sydney by month

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

In terms of precipitation, rainfall in Sydney, Nova Scotia ranges from 3.5 - 6.6 inches per month. December is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Sydney, Nova Scotia when rainfall is around 3.5 in.

Temperature in Sydney by month

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

If weather is an important factor for your trip to Sydney, Nova Scotia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).

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 May 1, 2025.
WestJet
7.2
Good
2,826 reviews

Overall

7.2

Boarding

7.4

Food

6.2

Crew

7.9

Entertainment

6.1

Comfort

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2024

LGA - YHZ

They staff were assigned. The flight was on time No entertainment for short travel
WestJet
7.2
Good
2,826 reviews
WestJet
7.2
Good
2,826 reviews

Overall

7.2

Boarding

7.4

Food

6.2

Crew

7.9

Entertainment

6.1

Comfort

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2024

LGA - YHZ

They staff were assigned. The flight was on time No entertainment for short travel
Air Canada
7.0
Good
9,252 reviews
WestJet
7.2
Good
2,826 reviews

Overall

7.2

Boarding

7.4

Food

6.2

Crew

7.9

Entertainment

6.1

Comfort

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2024

LGA - YHZ

They staff were assigned. The flight was on time No entertainment for short travel

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, Nova Scotia round-trip?

    According to our current data, Air Canada ($669), and WestJet ($767) offers the cheapest pricing from Seattle to Sydney, Nova Scotia.

  • 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 vacation 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.

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