$1,092 Cheap United flights from Seattle to Sydney (SEA to SYD)

Find The Best Day To Fly from Seattle to Sydney

Amazing United SEA to SYD Flight Deals

The cheapest flights to Kingsford Smith Intl. found within the past 7 days were $1,091 round trip and $1,092 one way. Prices and availability subject to change. Additional terms may apply.

Mon, Aug 5 - Wed, Aug 21
SEA
Seattle
SYD
Sydney
$1,091 Roundtrip, found 3 hours ago
$1,091
Roundtrip
found 3 hours ago
Select United flight, departing Mon, Aug 5 from Seattle to Sydney, returning Wed, Aug 21, priced at $1,091 found 3 hours ago
Mon, Oct 14 - Sun, Oct 27
SEA
Seattle
SYD
Sydney
$1,091 Roundtrip, found 1 day ago
$1,091
Roundtrip
found 1 day ago
Select United flight, departing Mon, Oct 14 from Seattle to Sydney, returning Sun, Oct 27, priced at $1,091 found 1 day ago
Sun, Oct 20 - Sun, Nov 3
SEA
Seattle
SYD
Sydney
$1,098 Roundtrip, found 2 days ago
$1,098
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 20 from Seattle to Sydney, returning Sun, Nov 3, priced at $1,098 found 2 days ago
Sun, Oct 20 - Sun, Nov 3
SEA
Seattle
SYD
Sydney
$1,099 Roundtrip, found 2 days ago
$1,099
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 20 from Seattle to Sydney, returning Sun, Nov 3, priced at $1,099 found 2 days ago
Sat, Nov 23 - Wed, Dec 4
SEA
Seattle
SYD
Sydney
$1,102 Roundtrip, found 6 days ago
$1,102
Roundtrip
found 6 days ago
Select United flight, departing Sat, Nov 23 from Seattle to Sydney, returning Wed, Dec 4, priced at $1,102 found 6 days ago
Sun, Oct 20 - Sun, Nov 3
SEA
Seattle
SYD
Sydney
$1,105 Roundtrip, found 2 days ago
$1,105
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 20 from Seattle to Sydney, returning Sun, Nov 3, priced at $1,105 found 2 days ago
Sun, Oct 20 - Sun, Nov 3
SEA
Seattle
SYD
Sydney
$1,106 Roundtrip, found 2 days ago
$1,106
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 20 from Seattle to Sydney, returning Sun, Nov 3, priced at $1,106 found 2 days ago
Sat, Nov 23 - Wed, Dec 4
SEA
Seattle
SYD
Sydney
$1,109 Roundtrip, found 6 days ago
$1,109
Roundtrip
found 6 days ago
Select United flight, departing Sat, Nov 23 from Seattle to Sydney, returning Wed, Dec 4, priced at $1,109 found 6 days ago
Thu, Nov 7 - Wed, Nov 13
SEA
Seattle
SYD
Sydney
$1,148 Roundtrip, found 10 hours ago
$1,148
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Nov 7 from Seattle to Sydney, returning Wed, Nov 13, priced at $1,148 found 10 hours ago

SYD From SEA Economy Coach Packages on Similar Airlines

YEHS Hotel Sydney Harbour Suites

YEHS Hotel Sydney Harbour Suites

4 out of 5
per person
Jul 7 - Jul 14
Roundtrip non-stop flight included
Seattle (SEA) to Sydney (SYD)
YEHS Hotel Sydney CBD

YEHS Hotel Sydney CBD

3.5 out of 5
per person
Jul 7 - Jul 14
Roundtrip non-stop flight included
Seattle (SEA) to Sydney (SYD)
YEHS Hotel Sydney QVB

YEHS Hotel Sydney QVB

3.5 out of 5
per person
Jul 7 - Jul 14
Roundtrip non-stop flight included
Seattle (SEA) to Sydney (SYD)
Don't see what you're looking for?
See all available trips from Seattle - Tacoma Intl. to Kingsford Smith Intl.
View all trips
Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from Seattle - Tacoma Intl. Airport (SEA) to Kingsford Smith Intl. Airport (SYD) right now?
It’s always wise to find out about any travel advice reports and quarantine requirements in effect in your destination. Be sure to check out the Covid-19 Travel Advisor for up-to-date info on flying to Mascot Airport.
What terminal is United Airlines at Sea-Tac Airport?
As soon as you’re given your boarding pass for your United Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Kingsford Smith Intl. Airport (SYD), see if the terminal details are written on it. If not, you might like to consult your airline. They should be able to advise where you’ll be flying into and out of.
Are there United Airlines non-stop flights from SEA to SYD?
Unfortunately, you can’t fly direct between SEA and SYD with United Airlines. Prepare to make a stopover if you need to travel with this airline on this route.
How long is a United Airlines flight from SEA to SYD?
Your United Airlines flight from SEA to SYD should take approximately 17 hours and 35 minutes, so consider packing an extra set of clothes and some toiletries for the long journey. If you want to keep boredom at bay, squeeze a few travel games and books in your cabin bag as well.
How many direct and indirect flights does United Airlines fly from SEA to SYD?
There are approximately 7 United Airlines flights weekly that operate from SEA to SYD.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Sydney Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Seattle SEA to Sydney SYD 

To find the best deals on flights to Seattle from Sydney with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Seattle SEA to Sydney SYD with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $1,091 to $1,148, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Seattle SEA to Sydney SYD 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Seattle to Sydney costs from $1,092. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Sydney SYD from  Seattle SEA with United 

To find a cheap United flight from Seattle SEA to Sydney SYD, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Seattle SEA to Sydney SYD 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as August, or if you book a flight with a stopover. 

 

Find nonstop flights from Seattle SEA to Sydney SYD with United 

If you’re keen to be on Sydney soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Seattle SEA to Sydney SYD 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Sydney SYD from  Seattle SEA with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to Sydney

ibis budget Sydney Airport
ibis budget Sydney Airport
2.5 out of 5
5 Ross Smith Avenue, Mascot, NSW
This hotel features free WiFi in public areas, laundry facilities, and self parking. Express check-out, a computer station, and luggage storage are also on ...
7.2/10 Good! (1,278 reviews)
"The staff were very helpful after a mix up with the Expedia booking. The rooms were clean and the bed comfortable.. Taxis were outside on leaving."

Reviewed on Apr 19, 2024

ibis budget Sydney Airport
Rydges Sydney Airport Hotel
Rydges Sydney Airport Hotel
4 out of 5
8 Arrival Court, Sydney International Airport, Mascot, NSW
This smoke-free hotel's 2 restaurants, 2 bars/lounges, and 24-hour gym are some of the featured amenities. Traveling on business? Take advantage of the 24-hour ...
8.6/10 Excellent! (1,708 reviews)
"Clean and quiet"

Reviewed on Apr 15, 2024

Rydges Sydney Airport Hotel
Novotel Sydney International Airport Hotel
Novotel Sydney International Airport Hotel
4 out of 5
22 Levey Street, Wolli Creek, NSW
This hotel features a restaurant, an outdoor pool, and a bar/lounge. Traveling on business? Take advantage of the business center, free WiFi in public areas, ...
8.4/10 Very Good! (1,002 reviews)
"Easy access."

Reviewed on Apr 17, 2024

Novotel Sydney International Airport Hotel
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.