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New South Wales

$1,077+ Cheap flights from St. Louis (STL) to New South Wales

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$1,270
(KAYAK)

Popular in

December

Cheapest in

August

Average price

$1,483
From Lambert-St Louis to New South Wales
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 junio 12, 2025.

This oojo deal was found by Cheapflights users on 6/12. 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.
vie. 11/286:15 amSTL - SYD
2 stops47h 10mQantas Airways
dom. 12/142:20 pmSYD - STL
1 stop18h 47mQantas Airways
Deal found 6/12$1,077
This Air Canada deal was found by Cheapflights users on 6/9. 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.
dom. 9/141:30 pmSTL - SYD
2 stops26h 50mMultiple Airlines
sáb. 9/279:20 amSYD - STL
2 stops22h 12mMultiple Airlines
Deal found 6/9$1,169
This FlightHub deal was found by Cheapflights users on 6/11. 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.
dom. 9/141:39 pmSTL - SYD
2 stops26h 41mAir Canada
sáb. 9/279:20 amSYD - STL
2 stops29h 38mAir Canada
Deal found 6/11$1,189
This American Airlines deal was found by Cheapflights users on 6/11. 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.
dom. 9/144:02 pmSTL - SYD
1 stop23h 53mAmerican Airlines
sáb. 9/279:10 amSYD - STL
2 stops23h 50mAmerican Airlines
Deal found 6/11$1,259
This oojo deal was found by Cheapflights users on 6/12. 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.
mar. 7/296:15 pmSTL - SYD
2 stops25h 20mAir New Zealand
mar. 8/128:45 amSYD - STL
2 stops47h 00mAir New Zealand
Deal found 6/12$1,316
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mié. 6/118:25 amSTL - SYD
2 stops31h 35mUnited Airlines
sáb. 6/2110:20 amSYD - STL
1 stop22h 40mUnited Airlines
Deal found 6/10$1,364
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/269:28 amSTL - SYD
2 stops30h 07mDelta
lun. 7/79:25 amSYD - STL
2 stops30h 13mDelta
Deal found 6/11$1,369
This KAYAK deal was found by Cheapflights users on 6/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/125:23 pmSTL - SYD
2 stops32h 52mLATAM Airlines
sáb. 7/1911:50 amSYD - STL
3 stops35h 32mLATAM Airlines
Deal found 6/12$3,500
This Booking.com deal was found by Cheapflights users on 6/11. 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.
vie. 10/33:23 pmSTL - SYD
3 stops36h 37mTurkish Airlines
vie. 10/179:55 pmSYD - STL
3 stops57h 49mTurkish Airlines
Deal found 6/11$3,687
This oojo deal was found by Cheapflights users on 6/10. 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.
vie. 6/276:28 amSTL - SYD
2 stops37h 22mCathay Pacific
sáb. 7/267:40 amSYD - STL
2 stops30h 17mCathay Pacific
Deal found 6/10$3,965

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 junio 12, 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

mar. 7/29

5:27 pm-6:55 am

1 stop22h 28m

Sydney Kingsford Smith

mar. 8/12

9:10 am-11:09 pm

1 stop28h 59m

$1,270

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

mar. 7/29

6:15 pm-10:35 am

2 stops25h 20m

Sydney Kingsford Smith

mar. 8/12

8:45 am-4:45 pm

2 stops47h 00m

$1,316

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

mar. 7/29

1:17 pm-7:05 am

2 stops26h 48m

Sydney Kingsford Smith

mar. 8/12

9:10 am-11:09 pm

1 stop28h 59m

$1,348

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

mar. 7/15

7:45 am-6:35 am

2 stops31h 50m

Sydney Kingsford Smith

mié. 7/30

9:25 am-6:47 pm

2 stops24h 22m

$1,365

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

mié. 8/13

1:30 pm-7:20 am

2 stops26h 50m

Sydney Kingsford Smith

lun. 8/18

5:45 pm-11:09 pm

1 stop20h 24m

$1,397

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

mié. 8/13

5:41 pm-6:55 am

1 stop22h 14m

Sydney Kingsford Smith

lun. 8/18

10:20 am-4:45 pm

1 stop21h 25m

$1,433

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

vie. 6/20

1:30 pm-7:20 am

3 stops50h 50m

Sydney Kingsford Smith

vie. 7/11

9:20 am-8:50 pm

2 stops26h 30m

$1,590

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

sáb. 7/12

5:23 pm-5:15 pm

2 stops32h 52m

Sydney Kingsford Smith

sáb. 7/19

11:50 am-8:22 am

3 stops35h 32m

$3,500

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

vie. 6/27

6:28 am-10:50 am

2 stops37h 22m

Sydney Kingsford Smith

sáb. 7/26

7:40 am-10:57 pm

2 stops30h 17m

$3,965

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

mié. 6/18

8:10 am-7:00 pm

3 stops43h 50m

Sydney Kingsford Smith

mié. 6/25

8:55 pm-10:45 pm

3 stops40h 50m

$4,379

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 11 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 $1,041). Flying from St. Louis to New South Wales in December is currently the most expensive (average of $1,635). 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 junio 12, 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 junio 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Air New Zealand from St. Louis to New South Wales to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Air New Zealand
8.0
Very good
483 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Qantas Airways
7.5
Good
854 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
LATAM Airlines
7.5
Good
1,785 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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 $1,041). Flying from St. Louis to New South Wales in December is currently the most expensive (average of $1,635). 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 6 airlines flying from St. Louis to New South Wales

Discover the top 6 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 junio 12, 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$1,446FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,204Average$1,494FlexibilityNo cancel feeOn-time69%
Fiji AirwaysCheapest$1,206Average$1,403FlexibilityNo cancel feeOn-time74%
Qantas AirwaysCheapest$1,260Average$1,556FlexibilityNo cancel feeOn-time74%

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