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

Air Canada, American Airlines, and Qantas Airways can get you from Australia to St. Louis in just under 20h 08m. Your travel time can differ by up to 26h 16m. Airlines will cover a distance of 14074 km. Both multi-stop and direct flights can be found to your destination and back. Find deals

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 inches per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm. Find deals

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

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.

What are the most popular airlines that fly from Australia to St. Louis?

Consider United Airlines, Qantas Airways or Air Canada when booking your flight. These represent the most popular airlines when flying from Australia to St. Louis.

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.

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.

$879+ Flights from Australia to St. Louis

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 12 December 2025.

Sat 13/1209:15SYD - STL

2 stops45h 14mJapan Airlines

Fri 19/1206:20STL - SYD

2 stops55h 30mJapan Airlines

Deal found 12/12$8,405

Sat 13/1211:50SYD - STL

1 stop21h 14mUnited Airlines

Fri 19/1209:55STL - SYD

2 stops30h 20mUnited Airlines

Deal found 12/12$17,244

Sat 13/1211:20SYD - STL

1 stop29h 37mQantas Airways

Fri 19/1211:41STL - SYD

1 stop26h 14mQantas Airways

Deal found 12/12$17,278

Sat 13/1215:15SYD - STL

2 stops44h 50mMultiple Airlines

Fri 19/1217:26STL - SYD

3 stops80h 54mMultiple Airlines

Deal found 12/12$17,723

Best flights from Australia to St. Louis
Discover carefully curated flight deals from Australia to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 December 2025.

Wed 18/210:45BNE - STL

2 stops44h 44mAir Canada

Sun 22/214:45STL - BNE

2 stops26h 00mAir Canada

Deal found 10/12$1,245

Wed 18/219:40BNE - STL

1 stop20h 08mAmerican Airlines

Sun 22/209:32STL - BNE

2 stops27h 28mAmerican Airlines

Deal found 10/12$1,256

Mon 26/119:40BNE - STL

1 stop20h 19mMultiple Airlines

Mon 2/211:55STL - BNE

1 stop26h 35mMultiple Airlines

Deal found 12/12$1,268

Mon 26/111:40BNE - STL

1 stop19h 57mUnited Airlines

Mon 2/208:45STL - BNE

2 stops30h 45mUnited Airlines

Deal found 12/12$1,274

Mon 12/118:35SYD - STL

2 stops46h 24mQantas Airways

Tue 27/117:04STL - SYD

2 stops24h 51mQantas Airways

Deal found 11/12$2,001

Tue 13/110:40SYD - STL

2 stops21h 08mDelta

Sat 24/117:04STL - SYD

2 stops44h 46mDelta

Deal found 11/12$2,369

Mon 26/119:40BNE - STL

1 stop20h 19mAmerican Airlines

Mon 2/215:37STL - BNE

1 stop22h 53mAmerican Airlines

Deal found 11/12$1,259

Sat 24/106:20SYD - STL

2 stops25h 21mMultiple Airlines

Sat 31/117:04STL - SYD

2 stops36h 11mMultiple Airlines

Deal found 9/12$1,660

Mon 12/121:55SYD - STL

2 stops43h 04mQantas Airways

Mon 26/117:04STL - SYD

2 stops47h 26mQantas Airways

Deal found 11/12$2,056

Mon 12/111:20SYD - STL

2 stops42h 56mAir Canada

Sun 25/116:05STL - SYD

2 stops48h 30mAir Canada

Deal found 11/12$2,286

Tue 13/122:00SYD - STL

2 stops42h 59mQantas Airways

Wed 28/111:55STL - SYD

2 stops27h 40mQantas Airways

Deal found 11/12$2,121

Sun 19/417:50BNE - STL

3 stops43h 39mMultiple Airlines

Sun 10/507:50STL - BNE

2 stops36h 15mMultiple Airlines

Deal found 11/12$2,124

Mon 12/112:10SYD - STL

1 stop20h 27mUnited Airlines

Wed 28/117:00STL - SYD

1 stop23h 15mUnited Airlines

Deal found 11/12$2,369

Tue 13/111:20SYD - STL

1 stop29h 39mAmerican Airlines

Tue 27/107:04STL - SYD

1 stop32h 56mAmerican Airlines

Deal found 11/12$2,343

Mon 12/112:10SYD - STL

1 stop20h 27mUnited Airlines

Mon 26/110:07STL - SYD

1 stop27h 53mUnited Airlines

Deal found 11/12$2,369

Mon 12/114:00SYD - STL

2 stops23h 58mUnited Airlines

Tue 27/117:00STL - SYD

1 stop23h 15mUnited Airlines

Deal found 11/12$2,369

Tue 13/111:50SYD - STL

1 stop21h 02mUnited Airlines

Mon 26/113:15STL - SYD

2 stops27h 00mUnited Airlines

Deal found 11/12$2,369

Wed 18/220:30LST - STL

2 stops44h 18mQantas Airways

Sun 22/206:30STL - LST

2 stops41h 05mQantas Airways

Deal found 9/12$3,005

Wed 11/206:30DPO - STL

2 stops34h 29mQantas Airways

Sun 15/206:30STL - DPO

2 stops44h 35mQantas Airways

Deal found 9/12$3,088

Last-minute flights from Australia to St. Louis
Discover last-minute flight deals from Australia to St. Louis. Data last updated 12 December 2025 and is based on user searches.

Mon 12/118:35SYD - STL

2 stops46h 24mQantas Airways

Tue 27/117:04STL - SYD

2 stops24h 51mQantas Airways

Deal found 11/12$2,001

Mon 12/121:55SYD - STL

2 stops43h 04mQantas Airways

Mon 26/117:04STL - SYD

2 stops47h 26mQantas Airways

Deal found 11/12$2,056

Mon 12/111:20SYD - STL

2 stops42h 56mAir Canada

Fri 23/118:00STL - SYD

2 stops46h 35mAir Canada

Deal found 11/12$2,257

Mon 12/111:20SYD - STL

2 stops42h 56mAir Canada

Sun 25/116:05STL - SYD

2 stops48h 30mAir Canada

Deal found 11/12$2,286

Tue 13/122:00SYD - STL

2 stops42h 59mQantas Airways

Tue 27/117:04STL - SYD

2 stops27h 51mQantas Airways

Deal found 11/12$2,064

Tue 13/122:00SYD - STL

2 stops42h 59mQantas Airways

Mon 26/117:04STL - SYD

2 stops47h 26mQantas Airways

Deal found 11/12$2,121

Tue 13/111:20SYD - STL

1 stop29h 39mQantas Airways

Wed 28/111:55STL - SYD

2 stops29h 30mQantas Airways

Deal found 11/12$2,251

Sat 24/106:20SYD - STL

2 stops25h 21mMultiple Airlines

Sat 31/117:04STL - SYD

2 stops36h 11mMultiple Airlines

Deal found 9/12$1,660

Mon 26/110:45BNE - STL

2 stops44h 44mAir Canada

Mon 2/208:45STL - BNE

2 stops32h 00mAir Canada

Deal found 12/12$1,245

Mon 26/119:40BNE - STL

1 stop20h 19mAmerican Airlines

Mon 2/211:27STL - BNE

2 stops27h 03mAmerican Airlines

Deal found 11/12$1,259

Mon 26/119:40BNE - STL

1 stop20h 19mMultiple Airlines

Mon 2/211:55STL - BNE

1 stop26h 35mMultiple Airlines

Deal found 12/12$1,268

Mon 26/111:40BNE - STL

1 stop19h 57mUnited Airlines

Mon 2/208:45STL - BNE

2 stops30h 45mUnited Airlines

Deal found 12/12$1,274

One-way flights from Australia to St. Louis
Search for one-way flight options from Australia to St. Louis. Find affordable one-way fares based on user searches. Data last updated 12 December 2025.

Wed 14/110:10MEL - STL

2 stops30h 15mDelta

Deal found 10/12$879

Wed 14/112:00MEL - STL

1 stop28h 59mQantas Airways

Deal found 11/12$988

Tue 16/1210:05SYD - STL

2 stops30h 52mQantas Airways

Deal found 11/12$1,116

Tue 16/1214:00SYD - STL

1 stop19h 27mMultiple Airlines

Deal found 11/12$1,694

Wed 14/112:00MEL - STL

1 stop28h 59mAmerican Airlines

Deal found 10/12$2,193

Mon 9/311:50SYD - STL

1 stop44h 15mUnited Airlines

Deal found 9/12$2,966

Find flight deals from Australia to St. Louis

Round-trip from	$1,245
One-way from	$879
Popular in	May
Cheapest in	August
Average price	$2,414

Air Canada
26/1-2/2
4 total stops
76h 44m total
Australia to St. Louis

Search Deals

Delta
14/1
2 total stops
30h 15m total
Australia to St. Louis

Search Deals

Highest demand for flights based on searches. 2% potential increase in price ($77 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($60 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 18/2

10:45-15:29

2 stops44h 44m

Lambert-St Louis

Sun 22/2

14:45-08:45

2 stops26h 00m

$1,245

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 18/2

19:40-23:48

1 stop20h 08m

Lambert-St Louis

Sun 22/2

09:32-05:00

2 stops27h 28m

$1,256

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 26/1

19:40-23:59

1 stop20h 19m

Lambert-St Louis

Mon 2/2

15:37-06:30

1 stop22h 53m

$1,259

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 26/1

19:40-23:59

1 stop20h 19m

Lambert-St Louis

Mon 2/2

11:55-06:30

1 stop26h 35m

$1,268

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 26/1

11:40-15:37

1 stop19h 57m

Lambert-St Louis

Mon 2/2

08:45-07:30

2 stops30h 45m

$1,274

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 24/1

06:20-14:41

2 stops25h 21m

Lambert-St Louis

Sat 31/1

17:04-22:15

2 stops36h 11m

$1,660

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/1

18:35-23:59

2 stops46h 24m

Lambert-St Louis

Tue 27/1

17:04-10:55

2 stops24h 51m

$2,001

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/1

21:55-23:59

2 stops43h 04m

Lambert-St Louis

Mon 26/1

17:04-09:30

2 stops47h 26m

$2,056

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 13/1

22:00-23:59

2 stops42h 59m

Lambert-St Louis

Wed 28/1

11:55-08:35

2 stops27h 40m

$2,121

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Sun 19/4

17:50-22:29

3 stops43h 39m

Lambert-St Louis

Sun 10/5

07:50-11:05

2 stops36h 15m

$2,124

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 26 results

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, November is the cheapest month in which you can book a flight from Australia to St. Louis (average of $1,117). Flying from Australia to St. Louis in April is currently the most expensive (average of $1,667). 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 AU to STL?

One of the essential ways to save on airfare from Australia to St. Louis is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 14% on airfare.

What is the cheapest day to fly from Australia to St. Louis?

Travellers seeking maximum savings on their Australia to St. Louis flight should consider departing on Sunday mornings when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown with Qantas Airways, United Airlines, andAir Canada 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

947 reviews

Check prices

Reviews

1 / 20

6.0

Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

Qantas Airways

7.5

Good

947 reviews

Qantas Airways

7.5

Good

947 reviews

Check prices

Reviews

1 / 20

6.0

Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

United Airlines

7.4

Good

9,095 reviews

Qantas Airways

7.5

Good

947 reviews

Check prices

Reviews

1 / 20

6.0

Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

Air Canada

7.1

Good

10,516 reviews

Qantas Airways

7.5

Good

947 reviews

Check prices

Reviews

1 / 20

6.0

Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

Related info for your journey

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?
Air Canada, American Airlines, and Qantas Airways can get you from Australia to St. Louis in just under 20h 08m. Your travel time can differ by up to 26h 16m. Airlines will cover a distance of 14074 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, 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.
What is the cheapest month to book a flight from Australia to St. Louis?
Currently, November is the cheapest month in which you can book a flight from Australia to St. Louis (average of $1,117). Flying from Australia to St. Louis in April is currently the most expensive (average of $1,667). 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

Alternative routes for Australia to St. Louis

Melbourne to Kansas City flights

Sydney to St. Louis flights

Brisbane to Kansas City flights

Sydney to Kansas City flights

Brisbane to St. Louis flights

Cairns to Kansas City flights

Devonport to St. Louis flights

Melbourne to St. Louis flights

Complete your trip

St. Louis car hire

Lambert-St Louis Airport car hire

Springfield Capital Airport car hire

Belleville Airport car hire

Marion Williamson County Airport car hire

Central West End car hire

West End car hire

Top 3 airlines flying from Australia to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$1,099	Average$1,725	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,229	Average$2,032	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Qantas Airways	Cheapest$1,458	Average$2,176	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

Fly with Cheapflights

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Australia to St. Louis from $879

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Australia to St. Louis

Cheapest flights from Australia to St. LouisExplore 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 12 December 2025.

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 12 December 2025.

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 12 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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.

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?

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 12 December 2025.

What is the cheapest day to fly from Australia to St. Louis?

Use this chart to determine the cheapest time to fly return from Australia to St. Louis. Price data was last updated on 16 December 2024.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown with Qantas Airways, United Airlines, andAir Canada 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.

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?

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

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

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

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

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

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

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.

Alternative routes for Australia to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Australia to St. Louis

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?

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

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

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

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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 12 December 2025.