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

Departing from St. Louis to New South Wales will take you 30h 55m. St. Louis and New South Wales are separated by a distance of 9054 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in New South Wales ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit New South Wales when rainfall is around 2.0 in.

If weather is an important factor for your trip to New South Wales, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

What are the most popular airlines that fly from St. Louis to New South Wales?

Before booking your flight from St. Louis to New South Wales check out the most popular airlines for this route: United Airlines, Qantas Airways or American Airlines.

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.

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.

$545+ Flights from St. Louis to New South Wales

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Cheap flight deals from St. Louis to New South Wales

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,241 (oojo)
One-way from	$545 (FlightHub)
Popular in	December
Cheapest in	August
Average price	$1,331

Provider with most accurate pricing for Lambert-St Louis-Sydney Kingsford Smith flight deals.

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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. 6% potential increase in price ($94 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($29 potential savings vs. average RT price).

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Average for round-trip flights in October 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 October 29, 2025.

Wed 11/127:00 amSTL - SYD

2 stops45h 55mQantas Airways

Sun 11/232:05 pmSYD - STL

1 stop19h 27mQantas Airways

Deal found 10/27

$1,241

Wed 11/1211:42 amSTL - SYD

1 stop26h 13mMultiple Airlines

Sun 11/232:05 pmSYD - STL

1 stop19h 27mMultiple Airlines

Deal found 10/28

$1,247

Wed 11/57:00 amSTL - SYD

1 stop31h 25mAmerican Airlines

Sun 11/232:05 pmSYD - STL

1 stop22h 25mAmerican Airlines

Deal found 10/28

$1,248

Mon 12/111:20 amSTL - SYD

1 stop26h 40mUnited Airlines

Wed 12/1712:10 pmSYD - STL

1 stop21h 17mUnited Airlines

Deal found 10/29

$1,258

Wed 11/51:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Sun 11/232:05 pmSYD - STL

1 stop19h 27mQantas Airways

Deal found 10/27

$1,275

Sun 11/210:00 amSTL - SYD

2 stops30h 15mUnited Airlines

Sun 11/1611:20 amSYD - STL

2 stops24h 27mUnited Airlines

Deal found 10/28

$1,287

Fri 11/283:59 pmSTL - SYD

1 stop21h 56mAmerican Airlines

Sun 12/142:05 pmSYD - STL

1 stop25h 20mAmerican Airlines

Deal found 10/28

$1,298

Wed 10/292:15 pmSTL - SYD

2 stops26h 45mAmerican Airlines

Sat 11/1511:20 amSYD - STL

2 stops25h 10mAmerican Airlines

Deal found 10/28

$1,301

Best flights from St. Louis to New South Wales
Discover carefully curated flight deals from St. Louis to New South Wales that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 29, 2025.

Fri 11/287:00 amSTL - SYD

2 stops33h 20mQantas Airways

Sun 12/142:05 pmSYD - STL

1 stop20h 00mQantas Airways

Deal found 10/27

$1,241

Wed 11/127:00 amSTL - SYD

1 stop30h 55mAmerican Airlines

Sun 11/232:05 pmSYD - STL

1 stop25h 29mAmerican Airlines

Deal found 10/29

$1,248

Fri 11/2811:20 amSTL - SYD

1 stop26h 40mUnited Airlines

Sun 12/1412:10 pmSYD - STL

1 stop21h 17mUnited Airlines

Deal found 10/29

$1,313

Wed 11/127:00 amSTL - SYD

2 stops34h 55mQantas Airways

Sun 11/232:05 pmSYD - STL

1 stop19h 27mQantas Airways

Deal found 10/29

$1,242

Thu 1/292:38 pmSTL - SYD

2 stops25h 22mAmerican Airlines

Wed 2/1811:20 amSYD - STL

2 stops22h 45mAmerican Airlines

Deal found 10/28

$1,301

Thu 11/138:20 amSTL - SYD

1 stop29h 40mUnited Airlines

Mon 11/1711:50 amSYD - STL

1 stop23h 57mUnited Airlines

Deal found 10/28

$1,313

Sun 4/192:33 pmSTL - SYD

2 stops25h 57mAmerican Airlines

Sat 4/259:10 amSYD - STL

1 stop29h 06mAmerican Airlines

Deal found 10/28

$1,301

Last-minute flights from St. Louis to New South Wales
Discover last-minute flight deals from St. Louis to New South Wales. Data last updated October 29, 2025 and is based on user searches.

Wed 10/292:15 pmSTL - SYD

2 stops26h 45mAmerican Airlines

Sat 11/1511:20 amSYD - STL

2 stops25h 10mAmerican Airlines

Deal found 10/28

$1,301

Sun 11/210:00 amSTL - SYD

2 stops30h 15mUnited Airlines

Sun 11/1611:20 amSYD - STL

2 stops24h 27mUnited Airlines

Deal found 10/28

$1,287

Wed 11/57:00 amSTL - SYD

1 stop31h 25mAmerican Airlines

Sun 11/232:05 pmSYD - STL

1 stop22h 25mAmerican Airlines

Deal found 10/28

$1,248

Wed 11/51:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Sun 11/232:05 pmSYD - STL

1 stop19h 27mQantas Airways

Deal found 10/27

$1,275

Wed 11/127:00 amSTL - SYD

2 stops33h 50mQantas Airways

Sun 11/232:05 pmSYD - STL

1 stop19h 27mQantas Airways

Deal found 10/28

$1,241

Wed 11/1211:42 amSTL - SYD

1 stop26h 13mMultiple Airlines

Sun 11/232:05 pmSYD - STL

1 stop19h 27mMultiple Airlines

Deal found 10/28

$1,247

Fri 11/283:59 pmSTL - SYD

1 stop21h 56mAmerican Airlines

Sun 12/142:05 pmSYD - STL

1 stop25h 20mAmerican Airlines

Deal found 10/28

$1,298

One-way flights from St. Louis to New South Wales
Search for one-way flight options from St. Louis to New South Wales. Find affordable one-way fares based on user searches. Data last updated October 29, 2025.

Mon 3/211:25 amSTL - SYD

2 stops39h 50mANA

Deal found 10/27

$545

Mon 12/13:53 pmSTL - SYD

3 stops59h 22mMultiple Airlines

Deal found 10/29

$608

Mon 12/14:05 pmSTL - SYD

2 stops45h 50mAir Canada

Deal found 10/29

$661

Sat 4/44:05 pmSTL - SYD

2 stops48h 15mAir Canada

Deal found 10/28

$671

Mon 12/11:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Deal found 10/29

$753

Wed 12/245:19 pmSTL - SYD

3 stops50h 11mMultiple Airlines

Deal found 10/28

$759

Mon 3/24:30 pmSTL - SYD

2 stops23h 35mUnited Airlines

Deal found 10/29

$762

Sat 4/46:30 amSTL - SYD

1 stop33h 35mQantas Airways

Deal found 10/29

$829

Sat 4/46:30 pmSTL - SYD

1 stop21h 25mUnited Airlines

Deal found 10/28

$832

Tue 12/232:18 pmSTL - SYD

2 stops49h 12mDelta

Deal found 10/28

$876

Wed 12/243:30 pmSTL - SYD

2 stops37h 00mQantas Airways

Deal found 10/28

$981

Thu 12/2510:42 amSTL - SYD

3 stops57h 53mMultiple Airlines

Deal found 10/28

$1,040

Cheapflights Fare Finder

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

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 11/28

7:00 am-9:20 am

2 stops33h 20m

Sydney Kingsford Smith

Sun 12/14

2:05 pm-5:05 pm

1 stop20h 00m

$1,241

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 11/12

7:00 am-10:55 am

2 stops34h 55m

Sydney Kingsford Smith

Sun 11/23

2:05 pm-4:32 pm

1 stop19h 27m

$1,242

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 11/12

7:00 am-6:55 am

1 stop30h 55m

Sydney Kingsford Smith

Sun 11/23

2:05 pm-10:34 pm

1 stop25h 29m

$1,248

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 1/29

2:38 pm-9:00 am

2 stops25h 22m

Sydney Kingsford Smith

Wed 2/18

11:20 am-5:05 pm

2 stops22h 45m

$1,301

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 4/19

2:33 pm-7:30 am

2 stops25h 57m

Sydney Kingsford Smith

Sat 4/25

9:10 am-11:16 pm

1 stop29h 06m

$1,301

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 11/28

11:20 am-7:00 am

1 stop26h 40m

Sydney Kingsford Smith

Sun 12/14

12:10 pm-4:27 pm

1 stop21h 17m

$1,313

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 11/13

8:20 am-7:00 am

1 stop29h 40m

Sydney Kingsford Smith

Mon 11/17

11:50 am-6:47 pm

1 stop23h 57m

$1,313

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 12/1

3:53 pm-8:15 pm

3 stops59h 22m

$608

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 12/1

4:05 pm-6:55 am

2 stops45h 50m

$661

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 4/4

4:05 pm-7:20 am

2 stops48h 15m

$671

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 16 results

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 $693). Flying from St. Louis to New South Wales in February is currently the most expensive (average of $1,270). 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?

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

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

207 reviews

Reviews

1 / 16

6.0

Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Fiji Airways

8.0

Very good

207 reviews

Fiji Airways

8.0

Very good

207 reviews

Reviews

1 / 16

6.0

Good

Christopher,Jun 2025

LAX - NAN

Qantas Airways

7.5

Good

924 reviews

Fiji Airways

8.0

Very good

207 reviews

Reviews

1 / 16

6.0

Good

Christopher,Jun 2025

LAX - NAN

United Airlines

7.4

Good

9,001 reviews

Fiji Airways

8.0

Very good

207 reviews

Reviews

1 / 16

6.0

Good

Christopher,Jun 2025

LAX - NAN

American Airlines

7.2

Good

11,032 reviews

Fiji Airways

8.0

Very good

207 reviews

Reviews

1 / 16

6.0

Good

Christopher,Jun 2025

LAX - NAN

Air Canada

7.1

Good

10,371 reviews

Fiji Airways

8.0

Very good

207 reviews

Reviews

1 / 16

6.0

Good

Christopher,Jun 2025

LAX - NAN

Related info for your journey

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 30h 55m. 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 $693). Flying from St. Louis to New South Wales in February is currently the most expensive (average of $1,270). 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

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

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$897	Average$1,281	FlexibilityNo cancel fee	On-time67%
Fiji Airways	Cheapest$1,132	Average$1,222	FlexibilityNo cancel fee	On-time74%
United Airlines	Cheapest$1,209	Average$1,510	FlexibilityNo cancel fee	On-time69%
Qantas Airways	Cheapest$1,262	Average$1,515	FlexibilityNo cancel fee	On-time74%
American Airlines	Cheapest$1,344	Average$1,495	FlexibilityNo cancel fee	On-time71%

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$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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to New South Wales with Cheapflights

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3. Compare prices and book

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 October 29, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to New South Wales

Cheapest flights from St. Louis to New South WalesExplore 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 October 29, 2025.

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 October 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to New South Wales that are best for you.

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.

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?

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 October 29, 2025.

Reviews of airlines servicing New South Wales

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.

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?

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

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

How can I 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?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to New South Wales

See prices for flight routes from nearby airports that may be better suited for you.

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

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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 October 29, 2025.