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New South Wales

$495+ 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$1,128
(oojo)

One-way from

$495
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,392
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 ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This oojo deal was found by Cheapflights users on 7/3. 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.
Fri 11/286:15 amSTL - SYD
2 stops34h 05mQantas Airways
Sun 12/142:20 pmSYD - STL
1 stop18h 47mQantas Airways
Deal found 7/3$1,128
This Air Canada deal was found by Cheapflights users on 7/2. 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 9/141:30 pmSTL - SYD
2 stops26h 50mMultiple Airlines
Sat 9/279:20 amSYD - STL
2 stops22h 12mMultiple Airlines
Deal found 7/2$1,146
This Air Canada deal was found by Cheapflights users on 7/3. 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.
Thu 8/219:15 amSTL - SYD
2 stops31h 05mAir Canada
Wed 9/39:20 amSYD - STL
2 stops44h 58mAir Canada
Deal found 7/3$1,150
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Fri 8/15:27 pmSTL - SYD
1 stop22h 28mAmerican Airlines
Thu 8/149:10 amSYD - STL
2 stops22h 36mAmerican Airlines
Deal found 7/2$1,162
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sun 9/145:49 pmSTL - SYD
1 stop22h 06mUnited Airlines
Sat 9/2710:20 amSYD - STL
1 stop21h 25mUnited Airlines
Deal found 7/2$1,181
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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.
Fri 8/156:41 amSTL - SYD
2 stops33h 49mAlaska Airlines
Fri 8/225:45 pmSYD - STL
2 stops35h 54mAlaska Airlines
Deal found 7/1$1,299
This oojo deal was found by Cheapflights users on 7/2. 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 8/165:52 pmSTL - SYD
2 stops26h 53mFiji Airways
Sat 8/231:45 pmSYD - STL
2 stops21h 37mFiji Airways
Deal found 7/2$1,304

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 July 3, 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

Fri 11/28

6:15 am-9:20 am

2 stops34h 05m

Sydney Kingsford Smith

Sun 12/14

2:20 pm-4:07 pm

1 stop18h 47m

$1,128

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 9/14

1:30 pm-7:20 am

2 stops26h 50m

Sydney Kingsford Smith

Sat 9/27

9:20 am-4:32 pm

2 stops22h 12m

$1,146

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 8/21

9:15 am-7:20 am

2 stops31h 05m

Sydney Kingsford Smith

Wed 9/3

9:20 am-3:18 pm

2 stops44h 58m

$1,150

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 8/1

5:27 pm-6:55 am

1 stop22h 28m

Sydney Kingsford Smith

Thu 8/14

9:10 am-4:46 pm

2 stops22h 36m

$1,162

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 9/14

5:49 pm-6:55 am

1 stop22h 06m

Sydney Kingsford Smith

Sat 9/27

10:20 am-4:45 pm

1 stop21h 25m

$1,181

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 8/15

6:41 am-7:30 am

2 stops33h 49m

Sydney Kingsford Smith

Fri 8/22

5:45 pm-2:39 pm

2 stops35h 54m

$1,299

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 8/16

5:52 pm-11:45 am

2 stops26h 53m

Sydney Kingsford Smith

Sat 8/23

1:45 pm-8:22 pm

2 stops21h 37m

$1,304

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 8/23

8:46 am-6:35 am

2 stops30h 49m

Sydney Kingsford Smith

Wed 8/27

9:25 am-4:45 pm

2 stops22h 20m

$1,332

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 8/14

3:24 pm-2:40 pm

2 stops32h 16m

$495

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 8/14

7:41 pm-6:55 am

1 stop20h 14m

$615

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 17 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 $1,040). Flying from St. Louis to New South Wales in December is currently the most expensive (average of $1,630). 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 July 3, 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.

How much does it cost to fly round-trip from St. Louis to New South Wales?

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 July 3, 2025.
Read through reviews of airlines operating flights from St. Louis to New South Wales, such as ANA, Alaska Airlines, and Fiji Airways. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.4
Very good
893 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Alaska Airlines
8.0
Very good
10,000 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Fiji Airways
8.0
Very good
202 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Delta
8.0
Very good
7,982 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Cathay Pacific
7.6
Good
921 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

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 $615. Users have also found prices from $617 and $739 on Air Canada and United 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 $1,040). Flying from St. Louis to New South Wales in December is currently the most expensive (average of $1,630). 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 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$912Average$1,281FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$1,132Average$1,222FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,173Average$1,873FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,193Average$1,446FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,204Average$1,493FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,257Average$1,507FlexibilityNo cancel feeOn-time74%

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