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

Departing from St. Louis to New South Wales will take you 44h 46m. 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.

$554+ 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	$988 (oojo)
One-way from	$554 (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 ($88 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 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 26, 2025.

Fri 11/287:00 amSTL - SYD

2 stops33h 50mQantas Airways

Sun 12/142:05 pmSYD - STL

1 stop20h 00mQantas Airways

Deal found 11/26

$1,070

Wed 12/101:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Sat 1/109:55 pmSYD - STL

2 stops33h 52mQantas Airways

Deal found 11/25

$1,086

Wed 12/31:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Wed 12/105:30 pmSYD - STL

2 stops23h 27mQantas Airways

Deal found 11/25

$1,102

Wed 12/36:55 amSTL - SYD

2 stops35h 00mQantas Airways

Fri 12/125:00 pmSYD - STL

2 stops23h 57mQantas Airways

Deal found 11/25

$1,303

Wed 12/36:55 amSTL - SYD

2 stops36h 20mQantas Airways

Sat 12/137:40 pmSYD - STL

2 stops33h 54mQantas Airways

Deal found 11/25

$1,310

Tue 12/21:35 pmSTL - SYD

2 stops24h 20mAir Canada

Fri 12/1211:20 amSYD - STL

2 stops22h 08mAir Canada

Deal found 11/25

$1,313

Mon 12/14:05 pmSTL - SYD

2 stops45h 50mAir Canada

Sat 12/134:00 pmSYD - STL

2 stops37h 39mAir Canada

Deal found 11/25

$1,320

Thu 12/41:35 pmSTL - SYD

2 stops24h 20mMultiple Airlines

Mon 12/84:00 pmSYD - STL

2 stops40h 29mMultiple Airlines

Deal found 11/24

$1,333

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 26, 2025.

Sat 1/317:04 amSTL - SYD

2 stops44h 46mQantas Airways

Sat 2/285:45 pmSYD - STL

1 stop23h 03mQantas Airways

Deal found 11/25

$988

Sat 1/314:05 pmSTL - SYD

2 stops48h 30mAir Canada

Sat 2/2811:20 amSYD - STL

2 stops26h 06mAir Canada

Deal found 11/25

$1,010

Mon 5/41:30 pmSTL - SYD

2 stops26h 50mMultiple Airlines

Mon 5/189:20 amSYD - STL

2 stops44h 56mMultiple Airlines

Deal found 11/26

$1,026

Mon 5/41:30 pmSTL - SYD

2 stops26h 30mUnited Airlines

Mon 5/1810:20 amSYD - STL

1 stop23h 02mUnited Airlines

Deal found 11/24

$1,165

Mon 5/41:30 pmSTL - SYD

3 stops50h 50mAir Canada

Mon 5/189:20 amSYD - STL

2 stops44h 56mAir Canada

Deal found 11/24

$1,028

Tue 1/2011:55 amSTL - SYD

1 stop26h 00mQantas Airways

Tue 1/279:55 pmSYD - STL

2 stops43h 04mQantas Airways

Deal found 11/25

$1,139

Thu 1/1511:55 amSTL - SYD

1 stop26h 00mQantas Airways

Fri 1/301:55 pmSYD - STL

2 stops27h 04mQantas Airways

Deal found 11/26

$1,139

Fri 5/16:00 pmSTL - SYD

1 stop21h 55mQantas Airways

Sat 5/95:50 pmSYD - STL

1 stop20h 26mQantas Airways

Deal found 11/25

$1,145

Sat 5/24:09 pmSTL - SYD

1 stop23h 46mQantas Airways

Sat 5/1612:00 pmSYD - STL

1 stop19h 11mQantas Airways

Deal found 11/26

$1,145

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 26, 2025 and is based on user searches.

Fri 11/287:00 amSTL - SYD

2 stops33h 50mQantas Airways

Sun 12/142:05 pmSYD - STL

1 stop20h 00mQantas Airways

Deal found 11/26

$1,070

Mon 12/14:05 pmSTL - SYD

2 stops48h 30mAir Canada

Thu 12/1111:20 amSYD - STL

2 stops45h 09mAir Canada

Deal found 11/25

$1,320

Tue 12/29:00 amSTL - SYD

2 stops31h 35mAir Canada

Sat 12/1311:20 amSYD - STL

2 stops42h 19mAir Canada

Deal found 11/25

$1,313

Wed 12/31:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Wed 12/105:30 pmSYD - STL

2 stops23h 27mQantas Airways

Deal found 11/25

$1,102

Wed 12/36:55 amSTL - SYD

2 stops35h 00mQantas Airways

Fri 12/125:00 pmSYD - STL

2 stops23h 57mQantas Airways

Deal found 11/25

$1,303

Wed 12/36:55 amSTL - SYD

2 stops36h 20mQantas Airways

Sat 12/137:40 pmSYD - STL

2 stops33h 54mQantas Airways

Deal found 11/25

$1,310

Thu 12/41:35 pmSTL - SYD

2 stops24h 20mMultiple Airlines

Mon 12/84:00 pmSYD - STL

2 stops40h 29mMultiple Airlines

Deal found 11/24

$1,333

Wed 12/101:20 pmSTL - SYD

1 stop24h 35mQantas Airways

Sat 1/109:55 pmSYD - STL

2 stops33h 52mQantas Airways

Deal found 11/25

$1,086

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 26, 2025.

Thu 3/55:11 pmSTL - SYD

3 stops50h 24mMultiple Airlines

Deal found 11/25

$554

Wed 1/213:46 pmSTL - SYD

2 stops46h 39mMultiple Airlines

Deal found 11/24

$617

Sat 4/46:02 pmSTL - SYD

2 stops46h 18mAir Canada

Deal found 11/23

$663

Mon 3/26:50 pmSTL - SYD

2 stops24h 25mQantas Airways

Deal found 11/24

$679

Sun 1/181:35 pmSTL - SYD

2 stops26h 25mMultiple Airlines

Deal found 11/24

$728

Mon 1/197:36 pmSTL - SYD

2 stops42h 49mMultiple Airlines

Deal found 11/24

$739

Sat 4/46:50 pmSTL - SYD

1 stop21h 05mQantas Airways

Deal found 11/23

$740

Sun 1/189:25 amSTL - SYD

1 stop28h 30mAmerican Airlines

Deal found 11/24

$748

Thu 3/59:32 amSTL - SYD

1 stop28h 23mAmerican Airlines

Deal found 11/25

$754

Tue 1/206:00 amSTL - SYD

2 stops33h 30mDelta

Deal found 11/24

$756

Tue 1/202:50 pmSTL - SYD

3 stops58h 50mMultiple Airlines

Deal found 11/24

$759

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

Sat 1/31

7:04 am-8:50 pm

2 stops44h 46m

Sydney Kingsford Smith

Sat 2/28

5:45 pm-11:48 pm

1 stop23h 03m

$988

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 1/31

4:05 pm-9:35 am

2 stops48h 30m

Sydney Kingsford Smith

Sat 2/28

11:20 am-8:26 pm

2 stops26h 06m

$1,010

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

1:30 pm-7:20 am

2 stops26h 50m

Sydney Kingsford Smith

Mon 5/18

9:20 am-3:16 pm

2 stops44h 56m

$1,026

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-3:16 pm

2 stops44h 56m

$1,028

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 1/20

11:55 am-6:55 am

1 stop26h 00m

Sydney Kingsford Smith

Tue 1/27

9:55 pm-11:59 pm

2 stops43h 04m

$1,139

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 1/15

11:55 am-6:55 am

1 stop26h 00m

Sydney Kingsford Smith

Fri 1/30

1:55 pm-11:59 pm

2 stops27h 04m

$1,139

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 5/1

6:00 pm-6:55 am

1 stop21h 55m

Sydney Kingsford Smith

Sat 5/9

5:50 pm-11:16 pm

1 stop20h 26m

$1,145

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 5/2

4:09 pm-6:55 am

1 stop23h 46m

Sydney Kingsford Smith

Sat 5/16

12:00 pm-4:11 pm

1 stop19h 11m

$1,145

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

1:30 pm-7:00 am

2 stops26h 30m

Sydney Kingsford Smith

Mon 5/18

10:20 am-6:22 pm

1 stop23h 02m

$1,165

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 3/5

5:11 pm-12:35 pm

3 stops50h 24m

$554

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

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 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

8.1

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

946 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

9,047 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

11,039 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

10,481 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 44h 46m. 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 $1,270). 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

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%
Qantas Airways	Cheapest$1,262	Average$1,504	FlexibilityNo cancel fee	On-time74%
American Airlines	Cheapest$1,340	Average$1,495	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$1,357	Average$1,512	FlexibilityNo cancel fee	On-time69%

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$554+ 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 3/5. 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 November 26, 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 26, 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 26, 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 26, 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 November 26, 2025.