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St. Louis

$652+ Cheap flights from Australia to St. Louis (STL)

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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
Sep 2 — Sep 91
Wed 9/2
Wed 9/9
1 adult, Economy
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Cheap 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 August 3, 2026.

This Trip.com deal was found by Cheapflights users on 8/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:15 pm
SYD
-
STL
3 stops37h 02m
Multiple Airlines
Sat 9/1912:17 pm
STL
-
SYD
3 stops43h 08m
Multiple Airlines
Deal found 8/2$931
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:15 pm
SYD
-
STL
3 stops37h 17m
Multiple Airlines
Wed 9/3012:17 pm
STL
-
SYD
3 stops43h 08m
Multiple Airlines
Deal found 7/31$935
This Air Canada deal was found by Cheapflights users on 7/31. 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.
Mon 11/211:20 am
SYD
-
STL
2 stops45h 06m
Multiple Airlines
Mon 11/161:40 pm
STL
-
SYD
2 stops26h 55m
Multiple Airlines
Deal found 7/31$974
This Air Canada deal was found by Cheapflights users on 7/29. 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 11/1211:20 am
SYD
-
STL
2 stops22h 37m
Air Canada
Mon 11/168:50 am
STL
-
SYD
2 stops31h 45m
Air Canada
Deal found 7/29$1,017
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/219:20 am
SYD
-
STL
2 stops26h 00m
Air Canada
Wed 9/308:55 am
STL
-
SYD
2 stops31h 25m
Air Canada
Deal found 7/31$1,026
This Air Canada deal was found by Cheapflights users on 7/30. 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.
Wed 10/217:00 am
MEL
-
STL
3 stops47h 00m
Multiple Airlines
Wed 10/284:05 pm
STL
-
MEL
3 stops51h 35m
Multiple Airlines
Deal found 7/30$1,030
This Mytrip deal was found by Cheapflights users on 7/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:20 am
SYD
-
STL
2 stops45h 06m
Air Canada
Mon 11/169:40 am
STL
-
SYD
3 stops30h 55m
Air Canada
Deal found 7/31$1,034
This Air Canada deal was found by Cheapflights users on 7/31. 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.
Wed 10/287:00 am
MEL
-
STL
3 stops48h 26m
Air Canada
Sun 11/14:05 pm
STL
-
MEL
3 stops53h 30m
Air Canada
Deal found 7/31$1,038
This Gotogate deal was found by Cheapflights users on 7/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:00 am
MEL
-
STL
3 stops47h 04m
Air Canada
Sun 8/162:40 pm
STL
-
MEL
3 stops29h 25m
Air Canada
Deal found 7/30$1,129
This Bravofly deal was found by Cheapflights users on 7/30. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:35 pm
MEL
-
STL
1 stop19h 45m
Qantas Airways
Wed 10/286:04 am
STL
-
MEL
1 stop35h 26m
Qantas Airways
Deal found 7/30$1,132
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 8/139:45 am
MEL
-
STL
2 stops27h 56m
American Airlines
Mon 8/178:07 pm
STL
-
MEL
2 stops43h 38m
American Airlines
Deal found 7/30$1,158
This Air Canada deal was found by Cheapflights users on 7/29. 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 8/136:00 am
MEL
-
STL
3 stops47h 04m
Air Canada
Mon 8/172:40 pm
STL
-
MEL
3 stops29h 25m
Air Canada
Deal found 7/29$1,163

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 August 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$935
(Trip.com)

One-way from

$550
(Kiwi.com)

Popular in

April

Cheapest in

September

Average price

$1,068
Provider with most accurate pricing for Sydney Kingsford Smith-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Lambert-St Louis flights.
Search Deals
From Australia to Lambert-St Louis
Search Deals
One-way flight from Australia to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated August 3, 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 round-trip

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 11/12

11:20 am-8:59 pm

2 stops26h 39m

Lambert-St Louis

Mon 11/16

7:30 am-9:35 am

3 stops33h 05m

$1,037

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 10/28

7:00 am-3:26 pm

3 stops48h 26m

Lambert-St Louis

Sun 11/1

4:05 pm-2:35 pm

3 stops53h 30m

$1,038

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 11/12

9:20 am-2:13 pm

1 stop21h 53m

Lambert-St Louis

Mon 11/16

5:55 pm-7:00 am

1 stop44h 05m

$1,052

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 9/4

9:10 am-10:59 pm

1 stop28h 49m

Lambert-St Louis

Wed 9/23

3:34 pm-7:05 am

2 stops24h 31m

$1,100

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 9/12

9:30 am-8:38 pm

2 stops26h 08m

Lambert-St Louis

Sat 9/19

4:40 pm-7:00 am

2 stops47h 20m

$1,109

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 8/13

6:00 am-2:04 pm

3 stops47h 04m

Lambert-St Louis

Mon 8/17

2:40 pm-11:05 am

3 stops29h 25m

$1,171

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 10/28

11:45 am-6:05 pm

1 stop22h 20m

Lambert-St Louis

Sun 11/1

6:50 pm-9:30 am

2 stops45h 40m

$1,187

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 9/7

10:55 am-6:39 pm

1 stop22h 44m

Lambert-St Louis

Sun 9/27

11:10 am-8:15 am

2 stops30h 05m

$1,188

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 9/11

10:00 am-11:42 pm

2 stops28h 42m

Lambert-St Louis

Fri 9/18

10:05 am-7:50 am

2 stops30h 45m

$1,211

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 9/11

6:00 am-11:30 pm

2 stops32h 30m

Lambert-St Louis

Fri 9/18

6:30 am-6:45 am

1 stop33h 15m

$1,213

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 21 resultsSorted by cheapest first
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3

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 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 Australia to St. Louis

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

Currently, June is the cheapest month in which you can book a flight from Australia to St. Louis (average of $820). Flying from Australia to St. Louis in April is currently the most expensive (average of $1,526). 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 August 3, 2026.
Peruse reviews from past customers who have flown with United Airlines from Australia to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,058 reviews

Crew

8.1

Comfort

7.3

Boarding

7.7

Food

6.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
United Airlines
7.4
Good
10,058 reviews
United Airlines
7.4
Good
10,058 reviews

Crew

8.1

Comfort

7.3

Boarding

7.7

Food

6.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

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?

    For a flight from Australia to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

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

    A quick flight from Australia to St. Louis can take about 21h 53m. Air Canada provides one of the quickest options available for as low as $1,052. The distance from Australia to St. Louis is about 9054 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    When deciding which route to take from Australia to St. Louis consider Melbourne - Lambert-St Louis, Sydney Kingsford Smith - Lambert-St Louis or Devonport - Lambert-St Louis as they are the most popular.

  • 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 vacation 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, June is the cheapest month in which you can book a flight from Australia to St. Louis (average of $820). Flying from Australia to St. Louis in April is currently the most expensive (average of $1,526). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Australia to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to St. Louis flights
Melbourne to St. Louis flights
Sydney to Kansas City flights
Auckland to Kansas City flights
Cairns to Kansas City flights
Brisbane to Kansas City flights

Top airline flying from Australia to St. Louis

Discover the top airline 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 2,558,603 searches. Data last updated August 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$822Average$1,483FlexibilityNo cancel feeOn-time69%

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