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

Departing from St. Louis to New South Wales will take you 30h 27m. St. Louis and New South Wales are separated by a distance of 9054 mi.

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

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

Airfare is below average for this route at the moment. St. Louis to New South Wales flights typically cost between $1,287 and $1,845 in November. The cheapest round-trip price found within the last 3 days was $1,084 on Qantas Airways (Nov 28-Dec 14).

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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	$1,084 (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 12, 2025.

Wed 11/127:00 amSTL - SYD

2 stops33h 20mQantas Airways

Sun 11/232:05 pmSYD - STL

1 stop19h 27mQantas Airways

Deal found 11/10

$1,071

Fri 11/281:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Sun 12/147:20 amSYD - STL

2 stops29h 07mQantas Airways

Deal found 11/11

$1,084

Thu 12/116:13 pmSTL - SYD

2 stops30h 27mQantas Airways

Thu 12/1811:20 amSYD - STL

1 stop29h 31mQantas Airways

Deal found 11/11

$1,138

Thu 12/111:16 pmSTL - SYD

2 stops26h 44mMultiple Airlines

Thu 12/185:45 pmSYD - STL

2 stops44h 40mMultiple Airlines

Deal found 11/11

$1,225

Mon 12/11:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Tue 12/169:55 pmSYD - STL

2 stops31h 37mQantas Airways

Deal found 11/10

$1,266

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 November 12, 2025.

Thu 12/116:13 pmSTL - SYD

2 stops30h 27mQantas Airways

Thu 12/1811:20 amSYD - STL

1 stop29h 31mQantas Airways

Deal found 11/11

$1,138

Thu 12/111:16 pmSTL - SYD

2 stops26h 44mMultiple Airlines

Thu 12/185:45 pmSYD - STL

2 stops44h 40mMultiple Airlines

Deal found 11/11

$1,225

Mon 1/55:26 pmSTL - SYD

2 stops33h 19mAlaska Airlines

Mon 1/129:40 pmSYD - STL

2 stops33h 14mAlaska Airlines

Deal found 11/11

$1,467

Mon 12/11:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Tue 12/169:55 pmSYD - STL

2 stops31h 37mQantas Airways

Deal found 11/10

$1,266

Fri 11/281:20 pmSTL - SYD

2 stops40h 05mQantas Airways

Sun 12/147:05 amSYD - STL

2 stops29h 22mQantas Airways

Deal found 11/11

$1,292

Sat 1/35:26 pmSTL - SYD

2 stops33h 19mAlaska Airlines

Sun 5/179:40 pmSYD - STL

2 stops34h 33mAlaska Airlines

Deal found 11/10

$1,610

Sat 1/311:41 amSTL - SYD

2 stops27h 54mQantas Airways

Sun 5/176:30 amSYD - STL

2 stops31h 46mQantas Airways

Deal found 11/11

$1,661

Mon 1/56:20 amSTL - SYD

1 stop33h 40mQantas Airways

Mon 1/127:30 pmSYD - STL

2 stops40h 59mQantas Airways

Deal found 11/11

$1,691

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 November 12, 2025 and is based on user searches.

Wed 11/127:00 amSTL - SYD

2 stops33h 20mQantas Airways

Sun 11/232:05 pmSYD - STL

1 stop19h 27mQantas Airways

Deal found 11/10

$1,071

Fri 11/281:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Sun 12/147:20 amSYD - STL

2 stops29h 07mQantas Airways

Deal found 11/11

$1,084

Mon 12/11:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Tue 12/169:55 pmSYD - STL

2 stops31h 37mQantas Airways

Deal found 11/10

$1,266

Thu 12/116:13 pmSTL - SYD

2 stops30h 27mQantas Airways

Thu 12/1811:20 amSYD - STL

1 stop29h 31mQantas Airways

Deal found 11/11

$1,138

Thu 12/111:16 pmSTL - SYD

2 stops26h 44mMultiple Airlines

Thu 12/185:45 pmSYD - STL

2 stops44h 40mMultiple Airlines

Deal found 11/11

$1,225

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 November 12, 2025.

Sat 2/77:43 pmSTL - SYD

3 stops41h 27mMultiple Airlines

Deal found 11/9

$545

Sat 2/75:04 pmSTL - SYD

2 stops26h 31mFiji Airways

Deal found 11/9

$570

Tue 1/65:26 pmSTL - SYD

2 stops33h 19mAlaska Airlines

Deal found 11/10

$843

Tue 1/67:43 pmSTL - SYD

3 stops55h 02mMultiple Airlines

Deal found 11/10

$904

Tue 1/67:04 amSTL - SYD

1 stop32h 56mAmerican Airlines

Deal found 11/10

$1,093

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

Thu 12/11

6:13 pm-5:40 pm

2 stops30h 27m

Sydney Kingsford Smith

Thu 12/18

11:20 am-11:51 pm

1 stop29h 31m

$1,138

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 12/11

1:16 pm-9:00 am

2 stops26h 44m

Sydney Kingsford Smith

Thu 12/18

5:45 pm-9:25 pm

2 stops44h 40m

$1,225

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 12/1

1:20 pm-6:55 am

1 stop24h 35m

Sydney Kingsford Smith

Tue 12/16

9:55 pm-12:32 pm

2 stops31h 37m

$1,266

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 11/28

1:20 pm-10:25 pm

2 stops40h 05m

Sydney Kingsford Smith

Sun 12/14

7:05 am-7:27 pm

2 stops29h 22m

$1,292

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 1/5

5:26 pm-7:45 pm

2 stops33h 19m

Sydney Kingsford Smith

Mon 1/12

9:40 pm-1:54 pm

2 stops33h 14m

$1,467

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 1/3

5:26 pm-7:45 pm

2 stops33h 19m

Sydney Kingsford Smith

Sun 5/17

9:40 pm-5:13 pm

2 stops34h 33m

$1,610

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 1/3

11:41 am-8:35 am

2 stops27h 54m

Sydney Kingsford Smith

Sun 5/17

6:30 am-11:16 pm

2 stops31h 46m

$1,661

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 1/5

6:20 am-9:00 am

1 stop33h 40m

Sydney Kingsford Smith

Mon 1/12

7:30 pm-7:29 pm

2 stops40h 59m

$1,691

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 2/7

7:43 pm-6:10 am

3 stops41h 27m

$545

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 2/7

5:04 pm-12:35 pm

2 stops26h 31m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 13 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 $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?

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.

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

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

8.1

Very good

209 reviews

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

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

933 reviews

Fiji Airways

8.1

Very good

209 reviews

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

9,015 reviews

Fiji Airways

8.1

Very good

209 reviews

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

11,049 reviews

Fiji Airways

8.1

Very good

209 reviews

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

10,443 reviews

Fiji Airways

8.1

Very good

209 reviews

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

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 27m. St. Louis and New South Wales are separated by a distance of 9054 mi.
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

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$1,340	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 2/7. 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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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 12, 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 November 12, 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 November 12, 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 November 12, 2025.

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

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 November 12, 2025.