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New South Wales

$545+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Cheap 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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$960
(oojo)

One-way from

$545
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,361
Provider with most accurate pricing for Lambert-St Louis-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Sydney Kingsford Smith flights.
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From Lambert-St Louis to New South Wales
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One-way flight from Lambert-St Louis to New South Wales
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Highest demand for flights based on searches. 5% potential increase in price ($87 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 20, 2025.

This Ovago deal was found by Cheapflights users on 11/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:30 pmSTL - SYD
1 stop20h 25mQantas Airways
Sun 12/147:05 amSYD - STL
2 stops22h 29mQantas Airways
Deal found 11/19$1,095
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/11:20 pmSTL - SYD
1 stop24h 35mQantas Airways
Fri 12/55:30 pmSYD - STL
2 stops23h 27mQantas Airways
Deal found 11/19$1,109
This Trip.com deal was found by Cheapflights users on 11/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/19:54 pmSTL - SYD
2 stops42h 06mMultiple Airlines
Sat 12/611:20 amSYD - STL
2 stops39h 27mMultiple Airlines
Deal found 11/19$1,193
This oojo deal was found by Cheapflights users on 11/19. 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.
Fri 11/287:00 amSTL - SYD
2 stops46h 25mQantas Airways
Sun 12/142:05 pmSYD - STL
1 stop20h 00mQantas Airways
Deal found 11/19$1,221
This Air Canada deal was found by Cheapflights users on 11/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/84:37 pmSTL - SYD
2 stops45h 18mAir Canada
Mon 12/154:00 pmSYD - STL
2 stops40h 29mAir Canada
Deal found 11/19$1,268
This Air Canada deal was found by Cheapflights users on 11/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:05 pmSTL - SYD
2 stops48h 30mAir Canada
Mon 12/154:00 pmSYD - STL
2 stops40h 29mAir Canada
Deal found 11/19$1,270
This Air Canada deal was found by Cheapflights users on 11/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:00 amSTL - SYD
2 stops52h 55mAir Canada
Tue 12/1611:20 amSYD - STL
2 stops42h 19mAir Canada
Deal found 11/19$1,279
This Trip.com deal was found by Cheapflights users on 11/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:16 pmSTL - SYD
2 stops26h 44mMultiple Airlines
Sat 12/1311:20 amSYD - STL
2 stops39h 27mMultiple Airlines
Deal found 11/19$1,280
This Air Canada deal was found by Cheapflights users on 11/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:05 pmSTL - SYD
2 stops48h 30mAir Canada
Tue 12/1611:20 amSYD - STL
2 stops42h 19mAir Canada
Deal found 11/19$1,281
This Air Canada deal was found by Cheapflights users on 11/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:05 pmSTL - SYD
2 stops48h 30mAir Canada
Thu 12/114:00 pmSYD - STL
2 stops41h 28mAir Canada
Deal found 11/19$1,300
This Qantas Airways deal was found by Cheapflights users on 11/19. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:55 amSTL - SYD
2 stops44h 10mQantas Airways
Tue 12/99:55 pmSYD - STL
2 stops43h 02mQantas Airways
Deal found 11/19$1,304

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 November 20, 2025.
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

Mon 5/4

2:33 pm-7:30 am

2 stops25h 57m

Sydney Kingsford Smith

Mon 5/18

9:10 am-11:16 pm

1 stop29h 06m

$1,279

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 12/3

6:55 am-9:50 am

2 stops33h 55m

Sydney Kingsford Smith

Fri 12/5

4:15 pm-11:57 pm

2 stops24h 42m

$1,304

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

1:30 pm-7:20 am

3 stops50h 50m

Sydney Kingsford Smith

Mon 5/18

9:20 am-6:25 pm

3 stops48h 05m

$1,356

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 1/20

5:04 pm-6:55 am

1 stop20h 51m

Sydney Kingsford Smith

Tue 1/27

2:05 pm-7:29 pm

1 stop22h 24m

$1,445

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 1/10

6:19 pm-7:45 pm

2 stops32h 26m

Sydney Kingsford Smith

Wed 1/14

9:40 pm-1:54 pm

2 stops33h 14m

$1,468

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 1/11

2:50 pm-7:45 pm

2 stops35h 55m

Sydney Kingsford Smith

Thu 1/15

9:40 pm-10:46 pm

2 stops42h 06m

$1,496

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 1/10

6:19 pm-7:45 pm

2 stops32h 26m

Sydney Kingsford Smith

Sat 1/17

9:40 pm-1:54 pm

2 stops33h 14m

$1,502

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 1/9

2:50 pm-7:45 pm

2 stops59h 55m

Sydney Kingsford Smith

Thu 1/15

9:40 pm-10:46 pm

2 stops42h 06m

$1,503

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 1/9

2:50 pm-7:45 pm

2 stops59h 55m

Sydney Kingsford Smith

Wed 1/14

9:40 pm-1:54 pm

2 stops33h 14m

$1,507

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 1/9

2:50 pm-7:45 pm

2 stops59h 55m

Sydney Kingsford Smith

Sat 1/17

9:40 pm-1:54 pm

2 stops33h 14m

$1,540

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 19 results
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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 $705). Flying from St. Louis to New South Wales in February is currently the most expensive (average of $1,265). 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.

What is the cheapest time of day to fly from STL to NSW?

Find hourly flight availability from St. Louis to New South Wales. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 50% on flights from St. Louis to New South Wales by exploring options for tickets in the evening.

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 November 20, 2025.
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
8.1
Very good
209 reviews

Boarding

8.2

Comfort

8.0

Food

7.5

Crew

8.5

Entertainment

7.5

Overall

8.1

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.1
Very good
209 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Comfort

8.0

Food

7.5

Crew

8.5

Entertainment

7.5

Overall

8.1

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
942 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Comfort

8.0

Food

7.5

Crew

8.5

Entertainment

7.5

Overall

8.1

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
9,028 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Comfort

8.0

Food

7.5

Crew

8.5

Entertainment

7.5

Overall

8.1

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
11,047 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Comfort

8.0

Food

7.5

Crew

8.5

Entertainment

7.5

Overall

8.1

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
10,462 reviews
Fiji Airways
8.1
Very good
209 reviews

Boarding

8.2

Comfort

8.0

Food

7.5

Crew

8.5

Entertainment

7.5

Overall

8.1

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 25h 57m. 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 $705). Flying from St. Louis to New South Wales in February is currently the most expensive (average of $1,265). 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$897Average$1,281FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$1,132Average$1,222FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,209Average$1,510FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,262Average$1,515FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,340Average$1,495FlexibilityNo cancel feeOn-time71%

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