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New South Wales

$673+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Jun 13 — Jun 201
Sat 6/13
Sat 6/20
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 May 14, 2026.

This oojo deal was found by Cheapflights users on 5/13. 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 11/16:13 pm
STL
-
SYD
2 stops33h 37m
Qantas Airways
Sat 11/1411:15 am
SYD
-
STL
1 stop29h 27m
Qantas Airways
Deal found 5/13$946
This oojo deal was found by Cheapflights users on 5/13. 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 11/77:00 am
STL
-
SYD
1 stop33h 00m
Qantas Airways
Thu 11/125:50 pm
SYD
-
STL
2 stops35h 47m
Qantas Airways
Deal found 5/13$1,096
This KAYAK deal was found by Cheapflights users on 5/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:23 pm
STL
-
SYD
1 stop20h 32m
Air New Zealand
Sun 8/3010:20 am
SYD
-
STL
1 stop23h 19m
Air New Zealand
Deal found 5/11$1,160
This United Airlines deal was found by Cheapflights users on 5/11. 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.
Wed 7/227:23 pm
STL
-
SYD
1 stop20h 32m
United Airlines
Sun 8/210:20 am
SYD
-
STL
1 stop22h 57m
United Airlines
Deal found 5/11$1,161
This oojo deal was found by Cheapflights users on 5/11. 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 11/77:00 am
STL
-
SYD
1 stop33h 00m
Qantas Airways
Sat 11/148:55 am
SYD
-
STL
2 stops47h 34m
Qantas Airways
Deal found 5/11$1,164
This KAYAK deal was found by Cheapflights users on 5/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/71:38 pm
STL
-
SYD
2 stops26h 22m
Air New Zealand
Sun 6/1410:20 am
SYD
-
STL
1 stop22h 57m
Air New Zealand
Deal found 5/11$1,165
This United Airlines deal was found by Cheapflights users on 5/11. 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.
Tue 7/219:15 am
STL
-
SYD
2 stops30h 45m
United Airlines
Sun 8/3010:20 am
SYD
-
STL
2 stops25h 42m
United Airlines
Deal found 5/11$1,166
This United Airlines deal was found by Cheapflights users on 5/11. 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.
Wed 7/225:10 am
STL
-
SYD
2 stops34h 50m
United Airlines
Wed 7/2910:20 am
SYD
-
STL
2 stops26h 06m
United Airlines
Deal found 5/11$1,180
This KAYAK deal was found by Cheapflights users on 5/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:23 pm
STL
-
SYD
1 stop20h 32m
Air New Zealand
Fri 7/3110:20 am
SYD
-
STL
1 stop22h 57m
Air New Zealand
Deal found 5/11$1,210
This United Airlines deal was found by Cheapflights users on 5/11. 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.
Wed 7/227:23 pm
STL
-
SYD
1 stop20h 32m
United Airlines
Thu 8/2710:20 am
SYD
-
STL
1 stop23h 19m
United Airlines
Deal found 5/11$1,211
This Justfly.com deal was found by Cheapflights users on 5/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:05 am
STL
-
SYD
2 stops33h 15m
Air Canada
Sun 5/249:20 am
SYD
-
STL
2 stops22h 13m
Air Canada
Deal found 5/10$1,213

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 May 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$946
(oojo)

One-way from

$673
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,341
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. 3% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 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
Quickest round-trip

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 7/22

7:23 pm-6:55 am

1 stop20h 32m

Sydney Kingsford Smith

Thu 8/27

10:20 am-4:34 pm

2 stops21h 14m

$1,216

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 8/1

7:23 pm-6:55 am

1 stop20h 32m

Sydney Kingsford Smith

Fri 8/14

10:20 am-6:39 pm

1 stop23h 19m

$1,261

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 7/22

8:00 am-6:50 am

2 stops31h 50m

Sydney Kingsford Smith

Wed 7/29

9:15 am-11:53 pm

2 stops29h 38m

$1,338

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 7/22

5:13 pm-6:55 am

1 stop22h 42m

Sydney Kingsford Smith

Wed 7/29

12:00 pm-7:51 pm

1 stop22h 51m

$1,381

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/28

9:22 pm-7:00 am

2 stops42h 38m

Sydney Kingsford Smith

Sat 7/11

10:20 am-5:27 pm

2 stops22h 07m

$1,405

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 7/25

6:37 am-10:45 am

2 stops37h 08m

Sydney Kingsford Smith

Mon 8/31

5:50 pm-10:55 pm

1 stop20h 05m

$1,567

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/28

7:23 pm-6:55 am

1 stop20h 32m

Sydney Kingsford Smith

Sat 7/11

10:20 am-6:17 pm

1 stop22h 57m

$1,603

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 6/13

6:35 am-7:05 am

1 stop33h 30m

Sydney Kingsford Smith

Sat 6/27

9:10 am-11:56 pm

1 stop29h 46m

$1,664

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 7/5

10:20 am-7:00 am

2 stops29h 40m

Sydney Kingsford Smith

Sun 9/6

9:30 am-10:27 pm

2 stops27h 57m

$1,691

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 7/23

7:23 pm-6:55 am

1 stop20h 32m

Sydney Kingsford Smith

Tue 9/1

10:20 am-3:38 pm

2 stops44h 18m

$1,706

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 13 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 $1,250). 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 May 14, 2026.
Read through reviews of airlines operating flights from St. Louis to New South Wales, such as Fiji Airways,Qantas Airways, andUnited Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.1
Very good
241 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.2

Food

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
Fiji Airways
8.1
Very good
241 reviews
Fiji Airways
8.1
Very good
241 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.2

Food

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
Qantas Airways
7.5
Good
1,037 reviews
Fiji Airways
8.1
Very good
241 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.2

Food

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
United Airlines
7.4
Good
9,711 reviews
Fiji Airways
8.1
Very good
241 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.2

Food

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.
American Airlines
7.1
Good
11,666 reviews
Fiji Airways
8.1
Very good
241 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.2

Food

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 19
8.0
Excellent

Paul,Mar 2026

YVR - NAN

Flown with Fiji Airways before they have always been good. The crew are very friendly and attentive. The seats in economy are in the small side but good. Another happy flight with them.

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 20h 32m. 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 $1,250). 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 4 airlines flying from St. Louis to New South Wales

Discover the top 4 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 May 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$887Average$1,214FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,079Average$1,511FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,145Average$1,354FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,233Average$1,497FlexibilityNo cancel feeOn-time71%

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