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Cheap flights from Seattle to Sydney from $452

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 5/29. 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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Sun 4/28
Sun 5/5

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Easily compare round-trip flights from Seattle to Sydney

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to Sydney by changing tabs
Multiple Airlines
May 29
SEA10:30 amSeattle/Tacoma Intl
35h 10m
2 stops
SYD2:40 pmSydney Kingsford Smith
Jun 10
SYD4:20 pmSydney Kingsford Smith
22h 25m
1 stop
SEA9:45 pmSeattle/Tacoma Intl
Hawaiian Airlines
Jun 3
SEA8:35 amSeattle/Tacoma Intl
18h 10m
1 stop
SYD7:45 pmSydney Kingsford Smith
Jun 20
SYD9:40 pmSydney Kingsford Smith
17h 05m
1 stop
SEA9:45 pmSeattle/Tacoma Intl
Air New Zealand
May 29
SEA3:10 pmSeattle/Tacoma Intl
24h 35m
2 stops
SYD8:45 amSydney Kingsford Smith
Jun 10
SYD8:45 amSydney Kingsford Smith
33h 01m
2 stops
SEA12:46 amSeattle/Tacoma Intl
ANA
May 20
SEA4:40 pmSeattle/Tacoma Intl
33h 35m
1 stop
SYD7:15 pmSydney Kingsford Smith
Jun 2
SYD8:55 pmSydney Kingsford Smith
34h 30m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
Air Canada
May 28
SEA3:10 pmSeattle/Tacoma Intl
23h 10m
1 stop
SYD7:20 amSydney Kingsford Smith
Jun 11
SYD9:20 amSydney Kingsford Smith
17h 42m
1 stop
SEA10:02 amSeattle/Tacoma Intl
United Airlines
May 29
SEA4:25 pmSeattle/Tacoma Intl
21h 30m
1 stop
SYD6:55 amSydney Kingsford Smith
Jun 10
SYD10:20 amSydney Kingsford Smith
21h 06m
1 stop
SEA2:26 pmSeattle/Tacoma Intl

Find the cheapest one-way flights from Seattle to Sydney

If you're looking for one-way flights from Seattle to Sydney, view some of our deals below provided by Air Canada and Hawaiian Airlines
Multiple Airlines
May 29
SEA10:30 amSeattle/Tacoma Intl
35h 10m
2 stops
SYD2:40 pmSydney Kingsford Smith
Hawaiian Airlines
May 15
SEA7:40 amSeattle/Tacoma Intl
19h 05m
1 stop
SYD7:45 pmSydney Kingsford Smith
Multiple Airlines
May 29
SEA8:35 amSeattle/Tacoma Intl
37h 05m
1 stop
SYD2:40 pmSydney Kingsford Smith

Search last-minute flights to Sydney from Seattle

Find and compare round-trip flight prices for your last-minute flight from Seattle to Sydney
United Airlines
May 1
SEA1:10 pmSeattle/Tacoma Intl
24h 50m
1 stop
SYD7:00 amSydney Kingsford Smith
May 15
SYD10:20 amSydney Kingsford Smith
18h 47m
1 stop
SEA12:07 pmSeattle/Tacoma Intl
American Airlines
May 1
SEA12:30 pmSeattle/Tacoma Intl
25h 35m
1 stop
SYD7:05 amSydney Kingsford Smith
May 15
SYD9:15 amSydney Kingsford Smith
26h 30m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
Multiple Airlines
May 1
SEA9:38 amSeattle/Tacoma Intl
33h 07m
3 stops
SYD11:45 amSydney Kingsford Smith
May 15
SYD1:15 pmSydney Kingsford Smith
24h 14m
3 stops
SEA8:29 pmSeattle/Tacoma Intl
British Airways
May 1
SEA1:32 pmSeattle/Tacoma Intl
46h 38m
3 stops
SYD5:10 amSydney Kingsford Smith
May 15
SYD2:45 pmSydney Kingsford Smith
44h 00m
2 stops
SEA5:45 pmSeattle/Tacoma Intl
British Airways
May 1
SEA1:32 pmSeattle/Tacoma Intl
46h 38m
3 stops
SYD5:10 amSydney Kingsford Smith
May 15
SYD2:45 pmSydney Kingsford Smith
44h 04m
3 stops
SEA5:49 pmSeattle/Tacoma Intl
Multiple Airlines
May 1
SEA11:59 pmSeattle/Tacoma Intl
50h 16m
3 stops
SYD7:15 pmSydney Kingsford Smith
May 15
SYD6:05 pmSydney Kingsford Smith
37h 40m
2 stops
SEA2:45 pmSeattle/Tacoma Intl

Best airlines flying from Seattle to Sydney

Compare and see reviews for airlines that fly from Seattle to Sydney with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $792Free CancellationRating
7.0
6,858 reviews
Search Air Canada flights
United AirlinesPriceFrom $816Free CancellationRating
7.4
11,289 reviews
Search United Airlines flights
DeltaPriceFrom $839Free CancellationRating
8.0
11,028 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $950Free CancellationRating
7.9
2,332 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom $1,009Free CancellationRating
7.3
14,914 reviews
Search American Airlines flights
Qantas AirwaysPriceFrom $1,033Free CancellationRating
7.6
1,008 reviews
Search Qantas Airways flights
Alaska AirlinesPriceFrom $1,086Free CancellationRating
8.0
9,102 reviews
Search Alaska Airlines flights
Fiji AirwaysPriceFrom $1,124Free CancellationRating
7.9
251 reviews
Search Fiji Airways flights
ANAPriceFrom $1,136Free CancellationRating
8.4
948 reviews
Search ANA flights
Air New ZealandPriceFrom $1,232Free CancellationRating
8.2
659 reviews
Search Air New Zealand flights

United Airlines flights from Seattle to Sydney

Our best United Airlines deals on Seattle to Sydney flight tickets
United Airlines
May 1
SEA1:10 pmSeattle/Tacoma Intl
24h 50m
1 stop
SYD7:00 amSydney Kingsford Smith
May 15
SYD10:20 amSydney Kingsford Smith
18h 47m
1 stop
SEA12:07 pmSeattle/Tacoma Intl
United Airlines
May 28
SEA4:25 pmSeattle/Tacoma Intl
21h 30m
1 stop
SYD6:55 amSydney Kingsford Smith
Jun 12
SYD9:30 amSydney Kingsford Smith
23h 22m
2 stops
SEA3:52 pmSeattle/Tacoma Intl
United Airlines
May 30
SEA7:42 pmSeattle/Tacoma Intl
18h 18m
1 stop
SYD7:00 amSydney Kingsford Smith
Jun 10
SYD10:20 amSydney Kingsford Smith
21h 06m
1 stop
SEA2:26 pmSeattle/Tacoma Intl

American Airlines flights from Seattle to Sydney

Our best American Airlines deals on Seattle to Sydney flight tickets
American Airlines
May 1
SEA12:30 pmSeattle/Tacoma Intl
25h 35m
1 stop
SYD7:05 amSydney Kingsford Smith
May 15
SYD9:15 amSydney Kingsford Smith
26h 30m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
American Airlines
May 31
SEA9:15 amSeattle/Tacoma Intl
28h 50m
2 stops
SYD7:05 amSydney Kingsford Smith
Jun 12
SYD9:15 amSydney Kingsford Smith
24h 44m
2 stops
SEA4:59 pmSeattle/Tacoma Intl
American Airlines
May 9
SEA1:15 amSeattle/Tacoma Intl
36h 50m
2 stops
SYD7:05 amSydney Kingsford Smith
May 19
SYD9:15 amSydney Kingsford Smith
19h 37m
1 stop
SEA11:52 amSeattle/Tacoma Intl

How to get the cheapest flight ticket from Seattle to Sydney

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 month to fly from Seattle to Sydney?

September. The cheapest time of year to fly to Sydney from Seattle is September. Most expensive is December

What is the cheapest day to depart Seattle for Sydney?

Sunday. The cheapest day of the week is typically Sunday. The most expensive is typically Friday

When is the cheapest time to fly from Seattle to Sydney?

In the evening. Seattle to Sydney flights are approximately 18% more expensive in the morning than in the evening

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

United Airlines. ANA, Air Canada, and Delta are the most popular carriers operating from Seattle to Sydney

What is the cheapest Seattle to Sydney flight route?

Seattle/Tacoma Intl - Sydney Kingsford Smith. Fly from Seattle/Tacoma Intl to Sydney Kingsford Smith for the best Seattle - Sydney flight prices

How far in advance should you book Seattle to Sydney flights?

31 days before. The cheapest time to buy a flight from Seattle to Sydney is approximately 31 days to departure

Cheap Seattle to Sydney (SEA to SYD) flight deals and tips

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

Best Price Found

$452

Fastest flight time

18h 00m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Seattle in the past 72 hours is $452. The best round-trip flight deal from Seattle to Sydney found on momondo in the last 72 hours is $953.
The fastest flight from Seattle to Sydney takes 18h 00m
There are no direct flights from Seattle to Sydney. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

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

    Sydney Kingsford Smith is 7743.7 mi away from Seattle/Tacoma Intl. In terms of flight time, this usually takes a little over 18h 00m.

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

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

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Sydney Kingsford Smith Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 Kingsford Smith Airport.

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

    The required travel and health documents for your Sydney Kingsford Smith 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 Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Sydney. momondo saves you time and could save you money on your trip.

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?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Seattle.

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.


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Sun 5/5
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