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Cheap flights from Australia to St. Louis from $887

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 30/7. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
1 Aug — 8 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to St. Louis

Enter your travel dates to find the best prices.

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 2 July 2026.

Thu 13/809:10
SYD
-
STL
1 stop28h 49m
American Airlines
Tue 25/806:00
STL
-
SYD
2 stops36h 15m
American Airlines
Deal found 29/6$1,462
Wed 4/1114:05
SYD
-
STL
1 stop22h 25m
Qantas Airways
Tue 10/1107:00
STL
-
SYD
1 stop33h 00m
Qantas Airways
Deal found 28/6$1,511
Sat 1/809:00
SYD
-
STL
2 stops24h 32m
American Airlines
Fri 7/806:00
STL
-
SYD
1 stop34h 05m
American Airlines
Deal found 1/7$1,537
Wed 12/809:10
SYD
-
STL
1 stop28h 49m
American Airlines
Sun 16/812:45
STL
-
SYD
2 stops27h 20m
American Airlines
Deal found 28/6$1,552
Wed 4/1111:15
SYD
-
STL
2 stops22h 25m
American Airlines
Tue 10/1114:29
STL
-
SYD
2 stops25h 31m
American Airlines
Deal found 28/6$1,572
Wed 12/809:10
SYD
-
STL
1 stop28h 49m
Qantas Airways
Sun 16/806:00
STL
-
SYD
1 stop34h 30m
Qantas Airways
Deal found 30/6$1,617
Mon 7/909:45
MEL
-
STL
1 stop28h 14m
Qantas Airways
Sun 27/918:43
STL
-
MEL
1 stop43h 17m
Qantas Airways
Deal found 28/6$1,621
Wed 9/910:20
SYD
-
STL
1 stop23h 19m
United Airlines
Sat 3/1016:49
STL
-
SYD
2 stops23h 06m
United Airlines
Deal found 29/6$1,627
Fri 4/1211:20
SYD
-
STL
2 stops22h 36m
Multiple Airlines
Tue 5/113:08
STL
-
SYD
2 stops24h 52m
Multiple Airlines
Deal found 1/7$1,646
Mon 7/909:45
MEL
-
STL
1 stop28h 14m
American Airlines
Sun 27/908:30
STL
-
MEL
2 stops35h 05m
American Airlines
Deal found 28/6$1,655
Fri 11/1211:40
BNE
-
STL
2 stops37h 08m
United Airlines
Fri 8/119:04
STL
-
BNE
2 stops44h 26m
United Airlines
Deal found 28/6$1,665
Wed 5/809:45
MEL
-
STL
2 stops38h 39m
American Airlines
Sun 9/818:45
STL
-
MEL
1 stop43h 15m
American Airlines
Deal found 29/6$1,700

Find 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 2 July 2026.

Round-trip from

$1,462

One-way from

$887

Popular in

July

Cheapest in

September

Average price

$2,594
American Airlines
  • American Airlines
  • 13/8-25/8
  • 3 total stops
  • 65h 04m total
  • Australia to St. Louis
Search Deals
Delta
  • Delta
  • 30/7
  • 2 total stops
  • 29h 38m total
  • Australia to St. Louis
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($200 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($87 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 2 July 2026.
Use the filters below to find and compare flights from Australia to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 13/8

09:10-18:05

2 stops23h 55m

Lambert-St Louis

Tue 25/8

06:00-09:15

2 stops36h 15m

$1,462

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:10-12:15

2 stops42h 05m

Lambert-St Louis

Sun 16/8

15:35-07:05

2 stops24h 30m

$1,552

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 4/11

11:15-16:40

2 stops22h 25m

Lambert-St Louis

Tue 10/11

14:29-09:00

2 stops25h 31m

$1,572

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:10-22:59

1 stop28h 49m

Lambert-St Louis

Sun 16/8

06:00-07:30

1 stop34h 30m

$1,617

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Fri 11/12

11:40-20:59

2 stops25h 19m

Lambert-St Louis

Wed 13/1

19:04-07:30

2 stops44h 26m

$1,665

LauncestonSt. Louis

LST - STL

LSTSTL

Launceston

Thu 13/8

06:30-22:59

2 stops31h 29m

Lambert-St Louis

Thu 20/8

06:00-11:00

2 stops38h 00m

$1,723

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 5/8

06:00-20:24

3 stops29h 24m

Lambert-St Louis

Sun 9/8

14:40-11:05

3 stops29h 25m

$1,723

LauncestonSt. Louis

LST - STL

LSTSTL

Launceston

Wed 21/10

06:30-23:46

2 stops33h 16m

Lambert-St Louis

Sun 25/10

06:04-20:10

2 stops46h 06m

$1,920

LauncestonSt. Louis

LST - STL

LSTSTL

Launceston

Wed 21/10

06:10-12:40

3 stops46h 30m

Lambert-St Louis

Sun 25/10

08:28-15:25

2 stops38h 57m

$2,114

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 7/9

14:20-22:59

2 stops23h 39m

Lambert-St Louis

Sun 27/9

18:43-13:50

3 stops28h 07m

$2,661

Flights are sorted by cheapest return flights first.

Deals found on 29/6

Showing 1-10 of 29 resultsSorted by cheapest first
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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 month to book a flight from Australia to St. Louis?

Currently, April is the cheapest month in which you can book a flight from Australia to St. Louis (average of $1,025). Flying from Australia to St. Louis in March is currently the most expensive (average of $1,705). 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.

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 2 July 2026.
Read reviews from past customers who have flown with Qantas Airways,United Airlines, andAmerican Airlines 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.
Qantas Airways
7.5
Good
1,054 reviews
Check prices

Boarding

7.7

Food

7.0

Overall

7.5

Comfort

7.4

Crew

8.1

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
Qantas Airways
7.5
Good
1,054 reviews
Qantas Airways
7.5
Good
1,054 reviews
Check prices

Boarding

7.7

Food

7.0

Overall

7.5

Comfort

7.4

Crew

8.1

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
United Airlines
7.4
Good
9,925 reviews
Qantas Airways
7.5
Good
1,054 reviews
Check prices

Boarding

7.7

Food

7.0

Overall

7.5

Comfort

7.4

Crew

8.1

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
American Airlines
7.1
Good
11,771 reviews
Qantas Airways
7.5
Good
1,054 reviews
Check prices

Boarding

7.7

Food

7.0

Overall

7.5

Comfort

7.4

Crew

8.1

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
Air Canada
7.1
Good
11,286 reviews
Qantas Airways
7.5
Good
1,054 reviews
Check prices

Boarding

7.7

Food

7.0

Overall

7.5

Comfort

7.4

Crew

8.1

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!

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.

  • How long is the flight from Australia to St. Louis?

    American Airlines, United Airlines, and Air Canada can get you from Australia to St. Louis in just under 23h 55m. Your travel time can differ by up to 5h 29m. Airlines will cover a distance of 14571 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Most travellers choose Sydney Kingsford Smith - Lambert-St Louis, Melbourne - Lambert-St Louis or Launceston - 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.

  • What is the cheapest month to book a flight from Australia to St. Louis?

    Currently, April is the cheapest month in which you can book a flight from Australia to St. Louis (average of $1,025). Flying from Australia to St. Louis in March is currently the most expensive (average of $1,705). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Australia to St. Louis

Discover the top 4 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 2 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,061Average$1,538FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,067Average$1,628FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qantas AirwaysCheapest$1,130Average$2,059FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,671Average$1,819FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

Cheapflights simply makes it quick and affordable to book flights from Australia to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Australia to St. Louis with no change fees?

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

Can Cheapflights notify me if prices for flights from Australia to St. Louis become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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