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Cheap flights from Seattle to Sydney from $379

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Sydney departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:20 pm - 7:25 pm
SEA
-
YQY
20h 05m
2 stops
Multiple Airlines Logo
8:15 pm - 6:32 pm
YQY
-
SEA
26h 17m
2 stops
$769Multiple Airlines
Fri, Jun 26 - Tue, Jun 30
Multiple Airlines Logo
3:00 pm - 7:25 pm
SEA
-
YQY
24h 25m
3 stops
Multiple Airlines Logo
8:15 pm - 6:32 pm
YQY
-
SEA
26h 17m
2 stops
$798Multiple Airlines
Fri, Jun 26 - Tue, Jun 30
Air Canada Logo
7:45 am - 10:31 pm
SEA
-
YQY
10h 46m
2 stops
Air Canada Logo
5:45 am - 8:54 pm
YQY
-
SEA
19h 09m
2 stops
$826Air Canada
Mon, Oct 26 - Thu, Oct 29
Air Canada Logo
7:45 am - 10:31 pm
SEA
-
YQY
10h 46m
2 stops
Air Canada Logo
5:45 am - 8:54 pm
YQY
-
SEA
19h 09m
2 stops
$827Air Canada
Mon, Oct 26 - Thu, Oct 29
Multiple Airlines Logo
3:00 pm - 7:25 pm
SEA
-
YQY
24h 25m
3 stops
Multiple Airlines Logo
8:15 pm - 6:32 pm
YQY
-
SEA
26h 17m
3 stops
$831Multiple Airlines
Fri, Jun 26 - Tue, Jun 30
Air Canada Logo
8:00 am - 12:45 am
SEA
-
YQY
12h 45m
1 stop
Air Canada Logo
5:05 am - 10:42 pm
YQY
-
SEA
21h 37m
2 stops
$844Air Canada
Fri, Oct 16 - Mon, Oct 19
Air Canada Logo
8:00 am - 12:45 am
SEA
-
YQY
12h 45m
1 stop
Air Canada Logo
5:05 am - 9:04 pm
YQY
-
SEA
19h 59m
1 stop
$845Air Canada
Sun, Sep 13 - Sun, Sep 20
Air Canada Logo
8:40 am - 11:34 am
SEA
-
YQY
22h 54m
2 stops
Air Canada Logo
5:45 am - 8:54 pm
YQY
-
SEA
19h 09m
2 stops
$848Air Canada
Mon, Oct 26 - Thu, Oct 29
Multiple Airlines Logo
11:00 pm - 7:25 pm
SEA
-
YQY
16h 25m
2 stops
Multiple Airlines Logo
8:15 pm - 9:00 pm
YQY
-
SEA
28h 45m
1 stop
$852Multiple Airlines
Fri, Jun 26 - Tue, Jun 30
Air Canada Logo
8:00 am - 12:45 am
SEA
-
YQY
12h 45m
1 stop
Air Canada Logo
5:20 pm - 9:04 pm
YQY
-
SEA
31h 44m
2 stops
$878Air Canada
Sun, Sep 13 - Sun, Sep 20

Air Canada flights from Seattle to Sydney, Nova Scotia

Our best Air Canada deals on Seattle to Sydney, Nova Scotia flight tickets
Air Canada
Oct 26
SEA7:45 amSeattle/Tacoma Intl
10h 46m
2 stops
YQY10:31 pmSydney
Oct 29
YQY5:45 amSydney
19h 09m
2 stops
SEA8:54 pmSeattle/Tacoma Intl
$826
Air Canada
Oct 26
SEA7:45 amSeattle/Tacoma Intl
10h 46m
2 stops
YQY10:31 pmSydney
Oct 29
YQY5:45 amSydney
19h 09m
2 stops
SEA8:54 pmSeattle/Tacoma Intl
$827
Air Canada
Oct 16
SEA8:00 amSeattle/Tacoma Intl
12h 45m
1 stop
YQY12:45 amSydney
Oct 19
YQY5:05 amSydney
21h 37m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$844

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Sydney, Nova Scotia 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, momondo users made 832,500 searches. Data last updated May 29, 2026.
Use the filters below to find and compare flights from Seattle to Sydney, Nova Scotia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Fri 6/26

7:20 pm-7:25 pm

2 stops20h 05m

Sydney

Tue 6/30

8:15 pm-6:32 pm

2 stops26h 17m

$769

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Fri 6/26

3:00 pm-7:25 pm

3 stops24h 25m

Sydney

Tue 6/30

8:15 pm-6:32 pm

2 stops26h 17m

$798
Quickest round-trip

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Mon 10/26

7:45 am-10:31 pm

2 stops10h 46m

Sydney

Thu 10/29

5:45 am-8:54 pm

2 stops19h 09m

$826

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Mon 10/26

7:45 am-10:31 pm

2 stops10h 46m

Sydney

Thu 10/29

5:45 am-8:54 pm

2 stops19h 09m

$827

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Fri 6/26

3:00 pm-7:25 pm

3 stops24h 25m

Sydney

Tue 6/30

8:15 pm-6:32 pm

3 stops26h 17m

$831

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Fri 10/16

8:00 am-12:45 am

1 stop12h 45m

Sydney

Mon 10/19

5:05 am-10:42 pm

2 stops21h 37m

$844

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Sun 9/13

8:00 am-12:45 am

1 stop12h 45m

Sydney

Sun 9/20

5:05 am-9:04 pm

1 stop19h 59m

$845

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Mon 10/26

8:40 am-11:34 am

2 stops22h 54m

Sydney

Thu 10/29

5:45 am-8:54 pm

2 stops19h 09m

$848

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Fri 6/26

11:00 pm-7:25 pm

2 stops16h 25m

Sydney

Tue 6/30

8:15 pm-9:00 pm

1 stop28h 45m

$852

SeattleSydney

SEA - YQY

SEAYQY

Seattle/Tacoma Intl

Sun 9/13

8:00 am-12:45 am

1 stop12h 45m

Sydney

Sun 9/20

5:20 pm-9:04 pm

2 stops31h 44m

$878

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Seattle to Sydney, Nova Scotia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Seattle/Tacoma Intl to Sydney?

WestJet and Air Canada are the most popular carriers operating from Seattle/Tacoma Intl to Sydney

When to book flights from Seattle to Sydney, Nova Scotia

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Sydney, Nova Scotia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Sydney, Nova Scotia (SEA to YQY) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Sydney, Nova Scotia

Fastest flight time

10h 46m

Direct flights

None
The fastest flight from Seattle to Sydney, Nova Scotia takes 10h 46m
There are no direct flights from Seattle to Sydney, Nova Scotia. There are no popular flight routes from Seattle to Sydney, Nova Scotia.
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Frequently asked questions about flying from Seattle to Sydney, Nova Scotia

  • How far is Seattle/Tacoma Intl to Sydney by plane?

    There are 2854.6 mi between Seattle/Tacoma Intl and Sydney. By plane, this route typically takes 10h 46m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Sydney Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Sydney Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Sydney Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Sydney Airport.

  • What documentation or ID do you need to fly to Sydney Airport?

    The required travel and health documents for your Sydney Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Cheticamp
Inverness

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Sydney?

Finding the right flight to Sydney from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

Can I find flights from Seattle to Sydney with flexible booking policies on momondo?

Yes. All flights to Sydney from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Sydney?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Sydney.

I’m not ready to book a flight from Seattle to Sydney right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to Sydney flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Sydney, Nova Scotia trip

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Find better results for your trip to Canada

Airports servicing Nova Scotia

Halifax Intl Airport