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Cheap flights from Australia to St. Louis from $1,043

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 20/11. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
23 Jul — 30 Jul1
1 adult

Cheap flight deals from Australia to St. Louis

Keep the following information in mind while searching for Australia to St. Louis flight deals. Data was last updated 18 July 2025.

Round-trip from

$1,263

One-way from

$1,043

Popular in

August

Cheapest in

November

Average price

$2,368
American Airlines
  • American Airlines
  • 18/8-8/11
  • 4 total stops
  • 48h 20m total
  • Australia to St. Louis
Search Deals
Air Canada
  • Air Canada
  • 20/11
  • 3 total stops
  • 48h 29m total
  • Australia to St. Louis
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($495 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($137 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Australia to St. Louis

Cheapest flights from Australia to St. Louis
Explore the most affordable flight options available from Australia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.

Mon 18/809:10SYD - STL
1 stop28h 59mAmerican Airlines
Sat 8/1111:20STL - SYD
2 stops28h 40mAmerican Airlines
Deal found 18/7$1,256
Fri 8/809:25SYD - STL
2 stops29h 28mDelta
Fri 15/811:28STL - SYD
2 stops28h 07mDelta
Deal found 17/7$1,308
Mon 1/909:20SYD - STL
2 stops49h 37mMultiple Airlines
Mon 8/916:40STL - SYD
2 stops23h 40mMultiple Airlines
Deal found 18/7$1,774
Thu 27/1112:10SYD - STL
1 stop21h 17mUnited Airlines
Thu 11/1213:35STL - SYD
2 stops26h 30mUnited Airlines
Deal found 17/7$1,905
Mon 1/909:20SYD - STL
2 stops49h 37mAir Canada
Mon 8/913:30STL - SYD
3 stops50h 50mAir Canada
Deal found 18/7$1,998
Mon 1/907:25MEL - STL
2 stops26h 44mMultiple Airlines
Mon 8/906:05STL - MEL
2 stops32h 40mMultiple Airlines
Deal found 18/7$2,107
Mon 1/910:55MEL - STL
1 stop20h 58mUnited Airlines
Mon 8/908:10STL - MEL
2 stops32h 20mUnited Airlines
Deal found 18/7$2,132
Sat 9/806:25SYD - STL
2 stops31h 44mQantas Airways
Fri 22/806:45STL - SYD
1 stop33h 45mQantas Airways
Deal found 17/7$2,203
Tue 22/710:20BNE - STL
2 stops45h 11mAir Canada
Mon 4/813:30STL - BNE
2 stops50h 35mAir Canada
Deal found 17/7$2,283
Mon 1/920:30MEL - STL
3 stops38h 08mAir Canada
Mon 8/909:15STL - MEL
3 stops35h 20mAir Canada
Deal found 18/7$2,383
Sat 19/709:15BNE - STL
2 stops29h 15mQantas Airways
Wed 30/706:14STL - BNE
2 stops48h 06mQantas Airways
Deal found 17/7$2,480
Tue 22/710:30BNE - STL
1 stop21h 15mUnited Airlines
Mon 4/817:41STL - BNE
1 stop21h 49mUnited Airlines
Deal found 17/7$2,778

Cheapflights Fare Finder

Customise your flight search to find flights from Australia to St. Louis 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 647,157 searches. Data last updated 18 July 2025.
Use the filters below to find and compare flights from Australia to St. Louis that are best for you.

Fly from

Australia

Fly to

St. Louis

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:10-18:29

2 stops24h 19m

Lambert-St Louis

Sat 8/11

11:20-09:00

2 stops28h 40m

$1,256

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 8/8

09:25-23:53

2 stops29h 28m

Lambert-St Louis

Fri 15/8

11:28-06:35

2 stops28h 07m

$1,308

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 1/9

09:20-19:57

2 stops49h 37m

Lambert-St Louis

Mon 8/9

16:40-07:20

2 stops23h 40m

$1,774

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 27/11

12:10-16:27

1 stop21h 17m

Lambert-St Louis

Thu 11/12

13:35-09:05

2 stops26h 30m

$1,905

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 1/9

09:20-19:57

2 stops49h 37m

Lambert-St Louis

Mon 8/9

13:30-07:20

3 stops50h 50m

$1,998

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 1/9

07:25-19:09

2 stops26h 44m

Lambert-St Louis

Mon 8/9

06:05-05:45

2 stops32h 40m

$2,107

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 1/9

10:55-16:53

1 stop20h 58m

Lambert-St Louis

Mon 8/9

08:10-07:30

2 stops32h 20m

$2,132

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 9/8

06:25-23:09

2 stops31h 44m

Lambert-St Louis

Fri 22/8

06:45-07:30

1 stop33h 45m

$2,203

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 1/9

20:30-19:38

3 stops38h 08m

Lambert-St Louis

Mon 8/9

09:15-11:35

3 stops35h 20m

$2,383

LauncestonSt. Louis

LST - STL

LSTSTL

Launceston

Thu 20/11

06:20-16:27

2 stops27h 07m

Lambert-St Louis

Mon 24/11

17:29-15:25

2 stops28h 56m

$2,926

Flights are sorted by cheapest return flights first.

Deals found on 18/7

Showing 1-10 of 18 results
1
2

Best time to book a flight from Australia to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Australia with our price prediction graph.
Estimated return 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 Australia to St. Louis

What is the cheapest time of day to fly from AU to STL?

Find hourly flight availability from Australia to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 July 2025.

When flying from Australia to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated 18 July 2025.
Read reviews from past customers who have flown with Delta, Qantas Airways, andQatar Airways from Australia to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,958 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,July 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,958 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,July 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Qantas Airways
7.5
Good
881 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,July 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Qatar Airways
7.4
Good
3,604 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,July 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,865 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,July 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,July 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Australia to St. Louis. 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 into for flights to St. Louis from Australia?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Australia. Lambert-St Louis is conveniently located just 20.4 km from St. Louis’s city centre.

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

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $1,043. However, be on the lookout for offers from Qantas Airways and United Airlines, as they are both options that can get you from Australia to St. Louis for a low price.

  • What are the most popular routes from Australia to St. Louis?

    Most travellers choose Sydney Kingsford Smith - Lambert-St Louis, Brisbane - Lambert-St Louis or Devonport - Lambert-St Louis when deciding on the best route from Australia to St. Louis.

  • Can I find deals for flights from Australia to St. Louis that include hotel bookings?

    Yes. In addition to deals on Australia to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Australia to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to St. Louis.

  • Can I find deals for business class flights from Australia to St. Louis?

    Yes. Cheapflights offers flight deals from Australia to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top 5 airlines flying from Australia to St. Louis

Discover the top 5 airlines that operate flights from Australia to St. Louis. 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 647,157 searches. Data last updated 18 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,371Average$2,235FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,460Average$1,902FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,506Average$1,802FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Qantas AirwaysCheapest$1,687Average$2,547FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,848Average$3,193FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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How does Cheapflights help users find flights from Australia to St. Louis?

When you search for this flight from Australia to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Australia to St. Louis?

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Australia to St. Louis flexibly with Cheapflights today.

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