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New South Wales

$603+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Aug 13 — Aug 201
Thu 8/13
Thu 8/20
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 July 14, 2026.

This Bravofly deal was found by Cheapflights users on 7/9. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
STL
-
SYD
1 stop34h 05m
Qantas Airways
Sun 8/309:10 am
SYD
-
STL
1 stop28h 49m
Qantas Airways
Deal found 7/9$1,131
This oojo deal was found by Cheapflights users on 7/10. 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 8/173:32 pm
STL
-
SYD
1 stop24h 23m
Qantas Airways
Mon 8/2412:00 pm
SYD
-
STL
1 stop21h 05m
Qantas Airways
Deal found 7/10$1,169
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:23 pm
STL
-
SYD
1 stop20h 32m
United Airlines
Sun 8/910:20 am
SYD
-
STL
1 stop22h 57m
United Airlines
Deal found 7/11$1,178
This United Airlines deal was found by Cheapflights users on 7/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:01 am
STL
-
SYD
2 stops33h 54m
United Airlines
Wed 8/1210:20 am
SYD
-
STL
1 stop23h 19m
United Airlines
Deal found 7/8$1,186
This American Airlines deal was found by Cheapflights users on 7/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:11 pm
STL
-
SYD
1 stop22h 44m
American Airlines
Sun 8/309:10 am
SYD
-
STL
2 stops23h 55m
American Airlines
Deal found 7/9$1,193
This oojo deal was found by Cheapflights users on 7/11. 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.
Tue 10/136:04 am
STL
-
SYD
1 stop34h 01m
Qantas Airways
Tue 10/277:05 am
SYD
-
STL
2 stops25h 57m
Qantas Airways
Deal found 7/11$1,205
This oojo deal was found by Cheapflights users on 7/11. 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 10/247:10 pm
STL
-
SYD
2 stops30h 30m
Qantas Airways
Tue 11/311:20 am
SYD
-
STL
1 stop29h 22m
Qantas Airways
Deal found 7/11$1,224
This oojo deal was found by Cheapflights users on 7/12. 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 8/203:35 pm
STL
-
SYD
1 stop24h 20m
Qantas Airways
Thu 8/2712:00 pm
SYD
-
STL
1 stop21h 05m
Qantas Airways
Deal found 7/12$1,266
This oojo deal was found by Cheapflights users on 7/9. 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 8/63:35 pm
STL
-
SYD
1 stop24h 20m
Qantas Airways
Thu 8/1312:00 pm
SYD
-
STL
1 stop21h 05m
Qantas Airways
Deal found 7/9$1,267
This oojo deal was found by Cheapflights users on 7/8. 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.
Tue 10/1312:47 pm
STL
-
SYD
1 stop26h 08m
Qantas Airways
Wed 11/187:00 am
SYD
-
STL
2 stops22h 37m
Qantas Airways
Deal found 7/8$1,281
This oojo deal was found by Cheapflights users on 7/11. 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.
Wed 9/233:34 pm
STL
-
SYD
1 stop24h 21m
Qantas Airways
Wed 10/71:00 pm
SYD
-
STL
1 stop21h 20m
Qantas Airways
Deal found 7/11$1,285

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 July 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,131
(Bravofly)

One-way from

$603
(oojo)

Popular in

December

Cheapest in

July

Average price

$1,161
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. 6% potential increase in price ($105 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 14, 2026.
Use the filters below to find and compare flights from St. Louis to New South Wales that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 8/12

12:52 pm-6:50 am

2 stops26h 58m

Sydney Kingsford Smith

Sun 8/30

9:15 am-11:58 pm

2 stops29h 43m

$1,191
Quickest round-trip

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 9/23

4:40 pm-7:00 am

2 stops23h 20m

Sydney Kingsford Smith

Wed 10/7

11:20 am-6:43 pm

1 stop23h 23m

$1,306

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 8/12

6:00 am-7:30 am

1 stop34h 30m

Sydney Kingsford Smith

Sun 8/16

9:10 am-10:59 pm

1 stop28h 49m

$1,676

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 9/23

1:36 pm-8:45 am

3 stops28h 09m

Sydney Kingsford Smith

Wed 10/7

9:55 am-10:59 pm

3 stops29h 04m

$1,743

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 8/24

1:36 pm-7:00 am

2 stops26h 24m

Sydney Kingsford Smith

Mon 8/31

10:20 am-12:40 pm

2 stops41h 20m

$1,794

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 8/8

6:01 am-6:55 am

2 stops33h 54m

Sydney Kingsford Smith

Fri 8/14

10:20 am-6:39 pm

1 stop23h 19m

$2,257

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 8/10

1:38 pm-8:45 am

3 stops28h 07m

Sydney Kingsford Smith

Sun 8/16

11:55 am-11:31 pm

3 stops26h 36m

$2,343

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 1/6

1:08 pm-9:05 am

3 stops26h 57m

Sydney Kingsford Smith

Thu 1/21

9:20 am-2:30 pm

2 stops22h 10m

$2,361

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 1/6

11:55 am-6:25 am

3 stops25h 30m

Sydney Kingsford Smith

Thu 1/21

8:30 am-2:47 pm

2 stops23h 17m

$2,538
Cheapest one-way
Quickest one-way

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 8/30

3:35 pm-6:55 am

1 stop24h 20m

$603

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Showing 1-10 of 17 resultsSorted by cheapest first
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, May is the cheapest month in which you can book a flight from St. Louis to New South Wales (average of $310). Flying from St. Louis to New South Wales in June is currently the most expensive (average of $1,568). 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.

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 July 14, 2026.
Read through reviews of airlines operating flights from St. Louis to New South Wales, such as Qantas Airways,United Airlines, andAmerican Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
1,061 reviews

Crew

8.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Food

7.0

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Amanda,Oct 2025

SYD - TMW

1 hour flight, on time, pleasant flight, easy boarding, nice staff.
Qantas Airways
7.5
Good
1,061 reviews
Qantas Airways
7.5
Good
1,061 reviews

Crew

8.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Food

7.0

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Amanda,Oct 2025

SYD - TMW

1 hour flight, on time, pleasant flight, easy boarding, nice staff.
United Airlines
7.4
Good
9,988 reviews
Qantas Airways
7.5
Good
1,061 reviews

Crew

8.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Food

7.0

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Amanda,Oct 2025

SYD - TMW

1 hour flight, on time, pleasant flight, easy boarding, nice staff.
American Airlines
7.1
Good
11,808 reviews
Qantas Airways
7.5
Good
1,061 reviews

Crew

8.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Food

7.0

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Amanda,Oct 2025

SYD - TMW

1 hour flight, on time, pleasant flight, easy boarding, nice staff.

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 23h 20m. 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, May is the cheapest month in which you can book a flight from St. Louis to New South Wales (average of $310). Flying from St. Louis to New South Wales in June is currently the most expensive (average of $1,568). 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 3 airlines flying from St. Louis to New South Wales

Discover the top 3 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 July 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,094Average$1,372FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,144Average$1,460FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,233Average$1,549FlexibilityNo cancel feeOn-time71%

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