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New South Wales

$480+ Cheap flights from St. Louis (STL) to New South Wales

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from St. Louis to New South Wales

Cheapest flights from St. Louis to New South Wales
Explore the most affordable flight options available from St. Louis to New South Wales. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This oojo deal was found by Cheapflights users on 1/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/317:04 am
STL
-
SYD
1 stop32h 56m
Qantas Airways
Sat 2/77:05 am
SYD
-
STL
2 stops33h 54m
Qantas Airways
Deal found 1/24$961
This oojo deal was found by Cheapflights users on 1/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/154:13 pm
STL
-
SYD
2 stops33h 27m
Qantas Airways
Tue 3/2411:20 am
SYD
-
STL
1 stop28h 38m
Qantas Airways
Deal found 1/25$975
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:38 am
STL
-
SYD
2 stops58h 27m
Qantas Airways
Sat 2/285:45 pm
SYD
-
STL
1 stop23h 14m
Qantas Airways
Deal found 1/26$992
This oojo deal was found by Cheapflights users on 1/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/216:38 am
STL
-
SYD
2 stops55h 57m
Qantas Airways
Sat 2/2811:20 am
SYD
-
STL
1 stop29h 39m
Qantas Airways
Deal found 1/25$994
This FlightHub deal was found by Cheapflights users on 1/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:38 am
STL
-
SYD
1 stop33h 22m
Qantas Airways
Wed 3/47:05 am
SYD
-
STL
2 stops33h 54m
Qantas Airways
Deal found 1/26$1,006
This FlightHub deal was found by Cheapflights users on 1/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:18 pm
STL
-
SYD
2 stops46h 47m
Qantas Airways
Mon 3/211:20 am
SYD
-
STL
1 stop29h 39m
Qantas Airways
Deal found 1/26$1,030
This FlightHub deal was found by Cheapflights users on 1/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/74:13 pm
STL
-
SYD
2 stops46h 22m
Qantas Airways
Sat 3/1411:20 am
SYD
-
STL
1 stop28h 38m
Qantas Airways
Deal found 1/27$1,034
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:38 am
STL
-
SYD
2 stops45h 12m
Qantas Airways
Thu 3/55:45 pm
SYD
-
STL
1 stop23h 14m
Qantas Airways
Deal found 1/27$1,144
This Expedia deal was found by Cheapflights users on 1/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:20 am
STL
-
SYD
2 stops35h 00m
Air Canada
Fri 10/239:20 am
SYD
-
STL
2 stops27h 39m
Air Canada
Deal found 1/27$1,182
This Orbitz deal was found by Cheapflights users on 1/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:05 pm
STL
-
SYD
2 stops46h 15m
Air Canada
Tue 4/149:20 am
SYD
-
STL
2 stops46h 36m
Air Canada
Deal found 1/27$1,189

Find flight deals from St. Louis to New South Wales

Keep the following information in mind while searching for St. Louis to New South Wales flight deals. Data was last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$975
(oojo)

One-way from

$480
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$1,460
Provider with most accurate pricing for Lambert-St Louis-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Sydney Kingsford Smith flights.
Search Deals
From Lambert-St Louis to New South Wales
Search Deals
One-way flight from Lambert-St Louis to New South Wales
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to New South Wales 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 January 27, 2026.
Use the filters below to find and compare flights from St. Louis to New South Wales that are best for you.

Fly from

St. Louis

Fly to

New South Wales

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 3/15

4:13 pm-8:50 pm

2 stops36h 37m

Sydney Kingsford Smith

Tue 3/24

11:20 am-11:58 pm

1 stop28h 38m

$975

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 2/23

6:38 am-10:05 am

2 stops58h 27m

Sydney Kingsford Smith

Sat 2/28

5:45 pm-11:59 pm

1 stop23h 14m

$992

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 2/25

6:38 am-9:00 am

1 stop33h 22m

Sydney Kingsford Smith

Wed 3/4

7:05 am-11:59 pm

2 stops33h 54m

$1,006

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 3/15

2:31 pm-9:00 am

2 stops26h 29m

Sydney Kingsford Smith

Tue 3/24

11:20 am-7:29 pm

2 stops24h 09m

$1,264

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 3/4

6:38 am-7:25 am

1 stop31h 47m

Sydney Kingsford Smith

Tue 3/10

11:20 am-11:58 pm

1 stop28h 38m

$1,266

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 2/23

6:38 am-9:00 am

1 stop33h 22m

Sydney Kingsford Smith

Mon 3/2

2:05 pm-7:29 pm

1 stop22h 24m

$1,271

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 2/14

4:30 pm-9:05 am

2 stops47h 35m

Sydney Kingsford Smith

Wed 2/18

12:10 pm-8:26 pm

2 stops25h 16m

$1,297

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 3/10

8:06 pm-12:35 pm

3 stops48h 29m

$535

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 3/9

12:14 pm-7:25 am

2 stops27h 11m

$592

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 3/2

6:18 pm-12:15 pm

2 stops24h 57m

$682

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 14 results
1
2

Best time to book a flight from St. Louis to New South Wales

Have a flexible travel schedule? Discover the best time to fly to New South Wales from St. Louis 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 St. Louis to New South Wales

What is the cheapest month to book a flight from St. Louis to New South Wales?

Currently, August is the cheapest month in which you can book a flight from St. Louis to New South Wales (average of $671). Flying from St. Louis to New South Wales in June is currently the most expensive (average of $1,257). 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.

How much does it cost to fly round-trip from St. Louis to New South Wales?

Reviews of airlines servicing New South Wales

Get insights into the airlines that provide service to New South Wales. 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 New South Wales. Reviews last updated January 27, 2026.
Read through reviews of airlines operating flights from St. Louis to New South Wales, such as Fiji Airways, Qantas Airways, and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.0
Very good
222 reviews

Food

7.4

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.0
Very good
222 reviews
Fiji Airways
8.0
Very good
222 reviews

Food

7.4

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Qantas Airways
7.5
Good
978 reviews
Fiji Airways
8.0
Very good
222 reviews

Food

7.4

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
United Airlines
7.4
Good
9,205 reviews
Fiji Airways
8.0
Very good
222 reviews

Food

7.4

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
American Airlines
7.2
Good
11,197 reviews
Fiji Airways
8.0
Very good
222 reviews

Food

7.4

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Air Canada
7.1
Good
10,660 reviews
Fiji Airways
8.0
Very good
222 reviews

Food

7.4

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to New South Wales. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to New South Wales?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to New South Wales from St. Louis.

  • How long is the flight from St. Louis to New South Wales?

    Departing from St. Louis to New South Wales will take you 26h 29m. St. Louis and New South Wales are separated by a distance of 9054 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from St. Louis to New South Wales that include hotel bookings?

    Yes. In addition to deals on St. Louis to New South Wales flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to New South Wales?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to New South Wales.

  • Can I find deals for business class flights from St. Louis to New South Wales?

    Yes. Cheapflights offers flight deals from St. Louis to New South Wales 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 St. Louis to New South Wales?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to New South Wales (average of $671). Flying from St. Louis to New South Wales in June is currently the most expensive (average of $1,257). 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

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Top 5 airlines flying from St. Louis to New South Wales

Discover the top 5 airlines that operate flights from St. Louis to New South Wales. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$608Average$1,250FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$1,132Average$1,222FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$1,207Average$1,447FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,211Average$1,512FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,259Average$1,495FlexibilityNo cancel feeOn-time71%

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