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New South Wales

$746+ 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,248
(Air Canada)

One-way from

$746
(Jetabroad)

Popular in

December

Cheapest in

November

Average price

$1,454
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. 7% potential increase in price ($123 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 March 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 March 28, 2025.

This Air Canada deal was found by Cheapflights users on 3/26. 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.
Sun 5/111:30 pmSTL - SYD
2 stops26h 50mAir Canada
Sun 5/189:20 amSYD - STL
2 stops42h 16mAir Canada
Deal found 3/26$1,248
This StudentUniverse deal was found by Cheapflights users on 3/27. 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.
Sat 3/295:37 pmSTL - SYD
2 stops36h 13mFiji Airways
Sat 4/56:00 amSYD - STL
2 stops32h 28mFiji Airways
Deal found 3/27$1,312
This American Airlines deal was found by Cheapflights users on 3/27. 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 8/244:19 pmSTL - SYD
2 stops23h 46mAmerican Airlines
Tue 9/29:10 amSYD - STL
1 stop28h 47mAmerican Airlines
Deal found 3/27$1,446
This Gurufare deal was found by Cheapflights users on 3/27. 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.
Sun 8/246:10 pmSTL - SYD
1 stop21h 45mQantas Airways
Tue 9/29:10 amSYD - STL
1 stop28h 47mQantas Airways
Deal found 3/27$1,450
This oojo deal was found by Cheapflights users on 3/27. 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 8/275:45 pmSTL - SYD
1 stop22h 10mAir New Zealand
Tue 9/26:20 pmSYD - STL
2 stops42h 48mAir New Zealand
Deal found 3/27$1,594
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:30 amSTL - SYD
2 stops34h 00mAlaska Airlines
Wed 9/35:45 pmSYD - STL
2 stops35h 32mAlaska Airlines
Deal found 3/27$1,610
This Priceline deal was found by Cheapflights users on 3/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/18:10 amSTL - SYD
2 stops34h 15mMultiple Airlines
Wed 9/35:45 pmSYD - STL
1 stop20h 14mMultiple Airlines
Deal found 3/27$1,751
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 4/251:43 pmSTL - SYD
2 stops26h 17mUnited Airlines
Fri 5/210:20 amSYD - STL
1 stop27h 25mUnited Airlines
Deal found 3/27$1,950
This Booking.com deal was found by Cheapflights users on 3/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:18 pmSTL - SYD
3 stops34h 42mTurkish Airlines
Tue 10/149:55 pmSYD - STL
3 stops56h 23mTurkish Airlines
Deal found 3/27$2,519
This FlightHub deal was found by Cheapflights users on 3/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/278:35 amSTL - SYD
2 stops54h 35mCathay Pacific
Sat 7/269:50 pmSYD - STL
2 stops36h 18mCathay Pacific
Deal found 3/27$8,504
This oojo deal was found by Cheapflights users on 3/27. 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.
Sun 8/244:23 pmSTL - SYD
3 stops45h 57mBritish Airways
Tue 9/22:40 pmSYD - STL
3 stops44h 14mBritish Airways
Deal found 3/27$10,683

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 March 28, 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 5/11

1:30 pm-7:20 am

2 stops26h 50m

Sydney Kingsford Smith

Sun 5/18

9:20 am-12:36 pm

2 stops42h 16m

$1,248

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 8/23

6:10 pm-10:10 pm

2 stops37h 00m

Sydney Kingsford Smith

Mon 9/1

1:15 pm-10:57 pm

2 stops24h 42m

$1,426

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 8/24

4:19 pm-7:05 am

2 stops23h 46m

Sydney Kingsford Smith

Tue 9/2

9:10 am-10:57 pm

1 stop28h 47m

$1,446

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 8/24

6:10 pm-6:55 am

1 stop21h 45m

Sydney Kingsford Smith

Tue 9/2

9:10 am-10:57 pm

1 stop28h 47m

$1,450

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 8/27

5:45 pm-6:55 am

1 stop22h 10m

Sydney Kingsford Smith

Tue 9/2

6:20 pm-10:08 pm

2 stops42h 48m

$1,594

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 9/1

6:30 am-7:30 am

2 stops34h 00m

Sydney Kingsford Smith

Wed 9/3

5:45 pm-2:17 pm

2 stops35h 32m

$1,610

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 9/1

8:10 am-9:25 am

2 stops34h 15m

Sydney Kingsford Smith

Wed 9/3

5:45 pm-10:59 pm

1 stop20h 14m

$1,751

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 4/25

1:43 pm-7:00 am

2 stops26h 17m

Sydney Kingsford Smith

Fri 5/2

10:20 am-10:45 pm

1 stop27h 25m

$1,950

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 4/25

3:40 pm-7:00 pm

3 stops36h 20m

Sydney Kingsford Smith

Fri 5/2

8:55 pm-3:47 pm

3 stops57h 52m

$2,808

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 6/27

8:35 am-6:10 am

2 stops54h 35m

Sydney Kingsford Smith

Sat 7/26

9:50 pm-7:08 pm

2 stops36h 18m

$8,504

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 13 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, March is the cheapest month in which you can book a flight from St. Louis to New South Wales (average of $1,044). 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 March 28, 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 March 28, 2025.
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Fiji Airways
8.0
Very good
182 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Air New Zealand
7.9
Good
456 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Qantas Airways
7.5
Good
811 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Cathay Pacific
7.5
Good
837 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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, March is the cheapest month in which you can book a flight from St. Louis to New South Wales (average of $1,044). 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$962Average$1,339FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,173Average$1,911FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$1,204Average$1,475FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,240Average$1,463FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,281Average$1,700FlexibilityNo cancel feeOn-time74%
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