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

Departing from St. Louis to New South Wales will take you 32h. 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.

$672+ 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 $1,340 and $1,975 in January. The cheapest round-trip price found within the last 3 days was $992 on Qantas Airways (Jan 25-Feb 1).

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 December 12, 2025.

Fri 12/125:30 pmSTL - SYD

2 stops24h 25mQantas Airways

Thu 12/188:10 pmSYD - STL

2 stops40h 20mQantas Airways

Deal found 12/11

$1,361

Fri 12/125:30 pmSTL - SYD

2 stops24h 25mQantas Airways

Fri 12/196:05 amSYD - STL

2 stops28h 05mQantas Airways

Deal found 12/11

$1,471

Sun 12/1411:10 amSTL - SYD

1 stop26h 50mUnited Airlines

Tue 12/161:00 pmSYD - STL

2 stops44h 27mUnited Airlines

Deal found 12/10

$1,592

Fri 12/125:30 pmSTL - SYD

1 stop22h 45mUnited Airlines

Thu 12/1811:50 amSYD - STL

1 stop21h 46mUnited Airlines

Deal found 12/11

$2,214

Sat 12/2710:30 amSTL - SYD

2 stops29h 45mUnited Airlines

Fri 1/911:20 amSYD - STL

2 stops28h 38mUnited Airlines

Deal found 12/10

$2,218

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 December 12, 2025.

Fri 2/67:04 amSTL - SYD

2 stops36h 56mQantas Airways

Tue 2/102:05 pmSYD - STL

1 stop19h 09mQantas Airways

Deal found 12/9

$1,103

Sun 1/256:00 amSTL - SYD

1 stop32h 00mUnited Airlines

Mon 2/211:50 amSYD - STL

1 stop27h 10mUnited Airlines

Deal found 12/10

$1,163

Wed 1/283:31 pmSTL - SYD

2 stops23h 59mDelta

Thu 2/510:40 amSYD - STL

2 stops23h 05mDelta

Deal found 12/10

$1,218

Tue 1/274:35 pmSTL - SYD

1 stop21h 25mUnited Airlines

Wed 2/411:20 amSYD - STL

2 stops22h 35mUnited Airlines

Deal found 12/10

$1,167

Mon 1/267:04 amSTL - SYD

2 stops39h 26mQantas Airways

Thu 2/55:45 pmSYD - STL

1 stop23h 14mQantas Airways

Deal found 12/10

$1,258

Thu 1/293:31 pmSTL - SYD

2 stops23h 59mDelta

Sat 2/72:15 pmSYD - STL

2 stops26h 10mDelta

Deal found 12/10

$1,268

Sun 1/256:00 amSTL - SYD

1 stop32h 00mUnited Airlines

Tue 2/312:10 pmSYD - STL

2 stops22h 33mUnited Airlines

Deal found 12/10

$1,167

Wed 1/287:04 amSTL - SYD

2 stops36h 11mQantas Airways

Thu 2/55:45 pmSYD - STL

1 stop23h 14mQantas Airways

Deal found 12/10

$1,258

Mon 1/266:45 amSTL - SYD

1 stop30h 35mUnited Airlines

Fri 2/612:10 pmSYD - STL

1 stop20h 27mUnited Airlines

Deal found 12/10

$1,213

Mon 1/267:04 amSTL - SYD

2 stops40h 46mQantas Airways

Fri 2/62:05 pmSYD - STL

1 stop19h 09mQantas Airways

Deal found 12/10

$1,258

Mon 1/266:45 amSTL - SYD

1 stop30h 35mUnited Airlines

Sat 2/712:10 pmSYD - STL

1 stop20h 27mUnited Airlines

Deal found 12/10

$1,213

Thu 1/296:00 amSTL - SYD

1 stop32h 00mUnited Airlines

Sat 2/711:50 amSYD - STL

1 stop20h 49mUnited Airlines

Deal found 12/10

$1,263

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 December 12, 2025 and is based on user searches.

Sun 1/257:04 amSTL - SYD

2 stops55h 31mQantas Airways

Sun 2/15:45 pmSYD - STL

1 stop23h 14mQantas Airways

Deal found 12/11

$992

Sun 1/256:00 pmSTL - SYD

2 stops46h 35mAir Canada

Sun 2/111:20 amSYD - STL

2 stops50h 38mAir Canada

Deal found 12/11

$1,129

Sun 1/256:00 pmSTL - SYD

2 stops46h 35mAir Canada

Tue 2/311:20 amSYD - STL

2 stops26h 38mAir Canada

Deal found 12/10

$1,145

Sun 1/256:00 amSTL - SYD

1 stop32h 00mUnited Airlines

Sun 2/112:10 pmSYD - STL

1 stop20h 27mUnited Airlines

Deal found 12/10

$1,163

Sun 1/256:00 amSTL - SYD

1 stop32h 00mUnited Airlines

Mon 2/22:00 pmSYD - STL

2 stops23h 58mUnited Airlines

Deal found 12/10

$1,167

Sun 1/256:00 pmSTL - SYD

2 stops46h 35mAir Canada

Fri 2/611:20 amSYD - STL

2 stops26h 38mAir Canada

Deal found 12/10

$1,195

Sun 1/256:00 amSTL - SYD

1 stop32h 00mUnited Airlines

Sat 2/711:50 amSYD - STL

1 stop20h 49mUnited Airlines

Deal found 12/10

$1,213

Mon 1/264:05 pmSTL - SYD

2 stops48h 30mAir Canada

Sun 2/111:20 amSYD - STL

2 stops45h 09mAir Canada

Deal found 12/10

$1,136

Mon 1/264:05 pmSTL - SYD

2 stops48h 30mAir Canada

Sat 2/711:20 amSYD - STL

2 stops45h 09mAir Canada

Deal found 12/10

$1,186

Mon 1/264:05 pmSTL - SYD

2 stops48h 30mAir Canada

Thu 2/511:20 amSYD - STL

2 stops26h 38mAir Canada

Deal found 12/10

$1,190

Fri 1/308:45 amSTL - SYD

2 stops55h 50mAir Canada

Tue 2/311:20 amSYD - STL

2 stops26h 38mAir Canada

Deal found 12/10

$1,196

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 December 12, 2025.

Mon 3/24:05 pmSTL - SYD

2 stops48h 30mAir Canada

Deal found 12/11

$672

Thu 3/52:47 pmSTL - SYD

3 stops46h 23mMultiple Airlines

Deal found 12/10

$734

Mon 3/24:39 pmSTL - SYD

1 stop21h 21mUnited Airlines

Deal found 12/10

$763

Thu 3/56:30 amSTL - SYD

1 stop33h 30mQantas Airways

Deal found 12/10

$923

Mon 3/28:41 amSTL - SYD

3 stops31h 04mMultiple Airlines

Deal found 12/10

$1,038

Find flight deals from St. Louis to New South Wales

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$992 (oojo)
One-way from	$672 (Air Canada)
Popular in	December
Cheapest in	August
Average price	$1,766

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. 4% potential increase in price ($76 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($28 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

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 2/6

7:04 am-1:00 pm

2 stops36h 56m

Sydney Kingsford Smith

Tue 2/10

2:05 pm-4:14 pm

1 stop19h 09m

$1,103

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 1/25

6:00 am-7:00 am

1 stop32h 00m

Sydney Kingsford Smith

Mon 2/2

11:50 am-10:00 pm

1 stop27h 10m

$1,163

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 1/27

4:35 pm-7:00 am

1 stop21h 25m

Sydney Kingsford Smith

Wed 2/4

11:20 am-4:55 pm

2 stops22h 35m

$1,167

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 1/25

6:00 am-7:00 am

1 stop32h 00m

Sydney Kingsford Smith

Tue 2/3

12:10 pm-5:43 pm

2 stops22h 33m

$1,167

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 1/26

6:45 am-6:20 am

1 stop30h 35m

Sydney Kingsford Smith

Fri 2/6

12:10 pm-3:37 pm

1 stop20h 27m

$1,213

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 1/26

6:45 am-6:20 am

1 stop30h 35m

Sydney Kingsford Smith

Sat 2/7

12:10 pm-3:37 pm

1 stop20h 27m

$1,213

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 1/28

3:31 pm-8:30 am

2 stops23h 59m

Sydney Kingsford Smith

Thu 2/5

10:40 am-4:45 pm

2 stops23h 05m

$1,218

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 1/26

7:04 am-3:30 pm

2 stops39h 26m

Sydney Kingsford Smith

Thu 2/5

5:45 pm-11:59 pm

1 stop23h 14m

$1,258

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 1/28

7:04 am-12:15 pm

2 stops36h 11m

Sydney Kingsford Smith

Thu 2/5

5:45 pm-11:59 pm

1 stop23h 14m

$1,258

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 1/26

7:04 am-4:50 pm

2 stops40h 46m

Sydney Kingsford Smith

Fri 2/6

2:05 pm-4:14 pm

1 stop19h 09m

$1,258

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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 $705). Flying from St. Louis to New South Wales in March is currently the most expensive (average of $1,285). 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

210 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

210 reviews

Fiji Airways

8.1

Very good

210 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

947 reviews

Fiji Airways

8.1

Very good

210 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

9,095 reviews

Fiji Airways

8.1

Very good

210 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

11,050 reviews

Fiji Airways

8.1

Very good

210 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

10,516 reviews

Fiji Airways

8.1

Very good

210 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 32h. 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 March is currently the most expensive (average of $1,285). 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

Alternative routes for St. Louis to New South Wales

St. Louis to Sydney flights

Kansas City to Sydney flights

Kansas City to Melbourne flights

St. Louis to Melbourne flights

Kansas City to Avalon flights

Kansas City to Brisbane flights

Columbia to Sydney flights

Springfield to Brisbane flights

Kansas City to Canberra flights

St. Louis to Canberra flights

Kansas City to Adelaide flights

Columbia to Melbourne flights

Kansas City to Perth flights

Springfield to Coolangatta flights

St. Louis to Cairns flights

St. Louis to Hobart flights

St. Louis to Perth flights

St. Louis to Brisbane flights

Complete your trip

New South Wales car rentals

Sydney Kingsford Smith Airport car rentals

Newcastle Williamtown Airport car rentals

Ballina Byron Airport car rentals

Wagga Wagga Forrest Hill Airport car rentals

Dubbo Airport car rentals

Tamworth Airport car rentals

Taree Airport car rentals

Parkes Airport car rentals

Sydney car rentals

Port Macquarie car rentals

Lismore car rentals

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

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$897	Average$1,260	FlexibilityNo cancel fee	On-time67%
Fiji Airways	Cheapest$1,132	Average$1,222	FlexibilityNo cancel fee	On-time74%
Qantas Airways	Cheapest$1,237	Average$1,450	FlexibilityNo cancel fee	On-time74%
American Airlines	Cheapest$1,340	Average$1,495	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$1,357	Average$1,511	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$672+ 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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap 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 December 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 December 12, 2025.

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 December 12, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 December 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

100% Free

Book with Flexibility

Travel Smart

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 December 12, 2025.