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New South Wales

$560+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Apr 29 — May 61
Tue 4/29
Tue 5/6
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 April 24, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,593
(Alaska Airlines)

One-way from

$560
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,504
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. 8% potential increase in price ($133 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 April 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 April 24, 2025.

This StudentUniverse deal was found by Cheapflights users on 4/22. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/128:27 amSTL - SYD
2 stops32h 18mAir New Zealand
Sun 10/267:55 amSYD - STL
2 stops30h 11mAir New Zealand
Deal found 4/22$1,204
This Air New Zealand deal was found by Cheapflights users on 4/22. 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 New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:39 pmSTL - SYD
3 stops28h 06mMultiple Airlines
Wed 9/311:50 amSYD - STL
2 stops25h 26mMultiple Airlines
Deal found 4/22$1,356
This Air Canada deal was found by Cheapflights users on 4/22. 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.
Fri 11/284:15 pmSTL - SYD
2 stops45h 40mAir Canada
Sun 12/1411:20 amSYD - STL
2 stops45h 06mAir Canada
Deal found 4/22$1,368
This oojo deal was found by Cheapflights users on 4/22. 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.
Sat 8/236:10 pmSTL - SYD
2 stops26h 35mFiji Airways
Mon 9/11:15 pmSYD - STL
2 stops24h 42mFiji Airways
Deal found 4/22$1,430
This Gurufare deal was found by Cheapflights users on 4/22. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:10 pmSTL - SYD
1 stop21h 45mQantas Airways
Wed 9/39:10 amSYD - STL
1 stop28h 49mQantas Airways
Deal found 4/22$1,451
This American Airlines deal was found by Cheapflights users on 4/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/127:00 amSTL - SYD
1 stop33h 05mAmerican Airlines
Sun 10/2611:15 amSYD - STL
1 stop27h 38mAmerican Airlines
Deal found 4/22$1,454
This United Airlines deal was found by Cheapflights users on 4/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/91:42 pmSTL - SYD
2 stops26h 13mUnited Airlines
Sun 6/229:30 amSYD - STL
2 stops23h 30mUnited Airlines
Deal found 4/22$1,612
This British Airways deal was found by Cheapflights users on 4/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/61:21 pmSTL - SYD
3 stops48h 59mBritish Airways
Fri 6/132:40 pmSYD - STL
3 stops44h 50mBritish Airways
Deal found 4/22$4,216
This AranGrant deal was found by Cheapflights users on 4/22. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:14 amSTL - SYD
2 stops31h 46mCathay Pacific
Sun 12/288:45 amSYD - STL
2 stops50h 13mCathay Pacific
Deal found 4/22$6,346
This AranGrant deal was found by Cheapflights users on 4/23. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2210:48 amSTL - SYD
3 stops55h 47mLATAM Airlines
Thu 7/311:30 amSYD - STL
2 stops36h 45mLATAM Airlines
Deal found 4/23$8,034
This oojo deal was found by Cheapflights users on 4/21. 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.
Wed 6/188:10 amSTL - SYD
3 stops43h 50mTurkish Airlines
Sun 6/298:55 pmSYD - STL
3 stops40h 50mTurkish Airlines
Deal found 4/21$8,259

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 April 24, 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

Sun 5/4

6:30 am-7:45 pm

2 stops46h 15m

Sydney Kingsford Smith

Sat 5/10

9:40 pm-2:08 pm

2 stops31h 28m

$1,593

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 6/2

5:27 pm-7:00 am

2 stops22h 33m

Sydney Kingsford Smith

Sat 6/21

10:20 am-7:37 pm

2 stops24h 17m

$1,662

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 5/4

6:11 pm-6:55 am

1 stop21h 44m

Sydney Kingsford Smith

Sat 5/10

6:20 pm-8:32 pm

2 stops41h 12m

$1,870

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 6/2

5:55 pm-8:45 am

2 stops23h 50m

Sydney Kingsford Smith

Sat 6/21

9:55 am-11:59 pm

3 stops29h 04m

$1,946

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 6/2

7:19 pm-6:55 am

1 stop20h 36m

Sydney Kingsford Smith

Sat 6/21

10:25 am-2:28 pm

1 stop19h 03m

$2,043

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 5/4

1:30 pm-7:20 am

3 stops50h 50m

Sydney Kingsford Smith

Sat 5/10

9:20 am-7:58 pm

2 stops49h 38m

$2,676

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/22

6:28 am-6:10 am

2 stops56h 42m

Sydney Kingsford Smith

Thu 7/3

9:50 pm-6:32 pm

2 stops35h 42m

$6,594

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/22

10:48 am-9:35 am

3 stops55h 47m

Sydney Kingsford Smith

Thu 7/3

11:30 am-9:15 am

2 stops36h 45m

$8,034

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/22

8:10 am-7:00 pm

3 stops43h 50m

Sydney Kingsford Smith

Thu 7/3

8:55 pm-10:45 pm

3 stops64h 50m

$12,020

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 6/4

8:11 pm-12:15 pm

3 stops49h 04m

$560

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 12 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, February is the cheapest month in which you can book a flight from St. Louis to New South Wales (average of $1,046). Flying from St. Louis to New South Wales in December is currently the most expensive (average of $1,643). 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 April 24, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to New South Wales as you normally would.

Rainfall in New South Wales by month

Plan your trip to New South Wales by taking into account the average rainfall totals by month.

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.

Temperature in New South Wales by month

Plan your trip to New South Wales by taking into account the average temperature totals by month.

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).

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 April 24, 2025.
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,918 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Air New Zealand
8.0
Very good
469 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,393 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Qantas Airways
7.5
Good
826 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Cathay Pacific
7.5
Good
850 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

  • What are the cheapest airlines to fly from St. Louis to New South Wales one-way?

    For one-way options, check prices for Qantas Airways. According to our data, you can fly for as low as $931. Users have also found prices from $933 and $959 on United Airlines and Hawaiian Airlines, respectively.

  • 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, February is the cheapest month in which you can book a flight from St. Louis to New South Wales (average of $1,046). Flying from St. Louis to New South Wales in December is currently the most expensive (average of $1,643). 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

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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$962Average$1,339FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,173Average$1,875FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,193Average$1,444FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,204Average$1,484FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,281Average$1,682FlexibilityNo cancel feeOn-time74%

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