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

Air Canada, American Airlines, and United Airlines can get you from Australia to St. Louis in just under 22h 07m. Your travel time can differ by up to 22h 34m. Airlines will cover a distance of 14571 km. Both multi-stop and direct flights can be found to your destination and back.

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.

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 Melbourne - Lambert-St Louis, Sydney Kingsford Smith - Lambert-St Louis or Brisbane - 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 American Airlines when booking your flight. These represent the most popular airlines when flying from Australia to St. Louis.

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

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.

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.

$887+ Cheap Flights from Australia to St. Louis

Cheap flight deals from Australia to St. Louis

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 10 October 2026.

Thu 5/1110:45 -

2 stops44h 41m

Mon 9/1106:00 -

2 stops34h 45m

Deal found 8/10$1,497

Sat 7/1112:00 -

1 stop22h 54m

Sat 14/1118:44 -

1 stop41h 16m

Deal found 10/10$1,503

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1015:20 -

1 stop23h 35m

Deal found 5/10$1,552

Sat 7/1106:05 -

2 stops23h 23m

Sat 14/1118:44 -

1 stop41h 16m

Deal found 10/10$1,557

Sun 22/1111:10 -

1 stop29h 48m

Sun 29/1114:48 -

1 stop23h 07m

Deal found 8/10$1,615

Sat 7/1110:10 -

2 stops27h 41m

Sat 14/1107:08 -

2 stops31h 52m

Deal found 10/10$1,651

Thu 5/1113:10 -

1 stop23h 32m

Mon 9/1112:58 -

2 stops48h 52m

Deal found 8/10$1,702

Wed 18/1111:50 -

2 stops22h 07m

Sat 12/1216:30 -

2 stops47h 35m

Deal found 6/10$1,726

Sun 22/1106:20 -

2 stops23h 06m

Sun 29/1106:00 -

1 stop31h 25m

Deal found 8/10$1,748

Mon 26/1022:45 -

2 stops34h 17m

Fri 30/1019:10 -

1 stop41h 50m

Deal found 9/10$1,791

Mon 26/1009:10 -

2 stops31h 34m

Fri 30/1019:20 -

2 stops43h 40m

Deal found 9/10$1,961

Mon 23/1117:35 -

2 stops43h 42m

Mon 30/1118:55 -

2 stops47h 45m

Deal found 9/10$1,982

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 10 October 2026.

Thu 5/1110:45 -

2 stops44h 41m

Mon 9/1106:00 -

2 stops34h 45m

Deal found 8/10$1,497

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1015:20 -

1 stop23h 35m

Deal found 6/10$1,556

Wed 18/1111:50 -

2 stops22h 07m

Sat 12/1216:30 -

2 stops47h 35m

Deal found 6/10$1,726

Mon 23/1117:35 -

2 stops43h 42m

Mon 30/1118:55 -

2 stops47h 45m

Deal found 9/10$1,982

Mon 23/1107:25 -

3 stops27h 40m

Mon 30/1106:00 -

2 stops38h 05m

Deal found 9/10$2,036

Wed 21/1008:40 -

2 stops29h 19m

Sat 24/1019:10 -

2 stops33h 40m

Deal found 8/10$2,496

Sun 22/1121:35 -

3 stops41h 05m

Sun 29/1107:30 -

3 stops42h 55m

Deal found 8/10$2,876

Wed 16/1210:10 -

2 stops30h 16m

Tue 5/107:30 -

2 stops31h 30m

Deal found 6/10$2,891

Fri 20/1122:20 -

2 stops35h 03m

Fri 27/1115:15 -

2 stops36h 15m

Deal found 5/10$4,797

Wed 18/1114:05 -

3 stops26h 19m

Sat 12/1209:40 -

3 stops29h 55m

Deal found 6/10$2,526

Wed 23/1209:40 -

1 stop20h 40m

Sun 3/106:01 -

2 stops48h 24m

Deal found 8/10$2,593

Fri 5/212:45 -

2 stops24h 53m

Tue 9/213:17 -

3 stops27h 13m

Deal found 9/10$2,754

Tue 15/1210:10 -

2 stops27h 22m

Thu 31/1209:00 -

2 stops30h 00m

Deal found 5/10$2,966

Fri 5/222:35 -

3 stops40h 02m

Tue 9/213:17 -

3 stops62h 28m

Deal found 7/10$3,022

Thu 5/1109:40 -

1 stop20h 24m

Mon 9/1108:10 -

1 stop29h 40m

Deal found 5/10$3,172

Mon 21/1212:45 -

1 stop20h 41m

Tue 29/1217:07 -

1 stop24h 23m

Deal found 5/10$2,897

Tue 22/1210:10 -

2 stops30h 18m

Sat 2/106:00 -

2 stops33h 00m

Deal found 8/10$2,969

Mon 21/1212:45 -

2 stops25h 37m

Thu 31/1217:07 -

1 stop24h 23m

Deal found 8/10$2,974

Sat 21/1115:20 -

2 stops46h 38m

Sat 28/1118:55 -

3 stops29h 25m

Deal found 7/10$3,287

Thu 17/1210:10 -

2 stops31h 36m

Wed 6/114:15 -

2 stops24h 45m

Deal found 6/10$3,040

Mon 21/1211:30 -

2 stops29h 08m

Fri 1/109:35 -

2 stops30h 55m

Deal found 9/10$2,994

Sat 21/1122:55 -

3 stops36h 45m

Sat 28/1114:43 -

3 stops33h 47m

Deal found 7/10$3,702

Fri 18/1211:30 -

2 stops28h 00m

Mon 4/118:09 -

2 stops46h 21m

Deal found 7/10$3,004

Thu 5/1107:05 -

3 stops27h 00m

Mon 9/1110:53 -

2 stops28h 37m

Deal found 8/10$3,224

Find flight deals from Australia to St. Louis

Round-trip from	$1,497
One-way from	$887
Popular in	January
Cheapest in	July
Average price	$1,797

Air Canada
5/11-9/11
4 total stops
79h 26m total
Australia to St. Louis

Search Deals

Delta
2/11-31/12
2 total stops
30h 44m total
Australia to St. Louis

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($589 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($154 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

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

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Mon 2/11

10:10-23:54

2 stops30h 44m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$887

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Mon 2/11

12:45-18:05

1 stop22h 20m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$904

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Fri 13/11

11:10-20:22

2 stops26h 12m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$969

Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Fri 13/11

09:15-14:13

1 stop21h 58m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$971

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Tue 19/1

10:10-20:37

2 stops27h 27m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,146

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Fri 13/11

14:05-23:24

3 stops26h 19m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,267

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Thu 5/11

10:45-15:26

2 stops44h 41m

Lambert-St Louis

Mon 9/11

06:00-08:45

2 stops34h 45m

$1,497

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-13:44

2 stops43h 34m

Lambert-St Louis

Sat 24/10

15:20-06:55

1 stop23h 35m

$1,556

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 18/11

11:50-16:57

2 stops22h 07m

Lambert-St Louis

Sat 12/12

16:30-09:05

2 stops47h 35m

$1,726

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Wed 6/1

07:15-14:56

3 stops47h 41m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,976

Flights are sorted by cheapest return flights first.

Deals found on 8/10

Showing 1-10 of 34 resultsSorted by cheapest first

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.

BNE-STL

SYD-STL

CBR-STL

MEL-STL

PER-STL

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

AU0-STL

BNE-STL

SYD-STL

CBR-STL

MEL-STL

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 $1,244). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,331). 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

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

1,107 reviews

Check prices

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

1,107 reviews

Qantas Airways

7.5

Good

1,107 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

United Airlines

7.4

Good

10,332 reviews

Qantas Airways

7.5

Good

1,107 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

American Airlines

7.0

Good

12,152 reviews

Qantas Airways

7.5

Good

1,107 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

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 United Airlines can get you from Australia to St. Louis in just under 22h 07m. Your travel time can differ by up to 22h 34m. 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 Melbourne - Lambert-St Louis, Sydney Kingsford Smith - Lambert-St Louis or Brisbane - 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, June is the cheapest month in which you can book a flight from Australia to St. Louis (average of $1,244). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,331). 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.

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Devonport to St. Louis flights

Top 3 airlines flying from Australia to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,174	Average$1,816	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$1,304	Average$2,039	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Qantas Airways	Cheapest$1,500	Average$1,995	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

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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.

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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.

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

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Cheap flights from Australia to St. Louis from $887

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/11. 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 10 October 2026.

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 10 October 2026.

Best flights from Australia to St. LouisDiscover 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 10 October 2026.

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 10 October 2026.

Last-minute flights from Australia to St. LouisDiscover last-minute flight deals from Australia to St. Louis. Data last updated 10 October 2026 and is based on user searches.

Discover last-minute flight deals from Australia to St. Louis. Data last updated 10 October 2026 and is based on user searches.

One-way flights from Australia to St. LouisSearch for one-way flight options from Australia to St. Louis. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.

Search for one-way flight options from Australia to St. Louis. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.

Find flight deals from Australia to St. Louis

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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

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

Reviews of airlines servicing St. Louis

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.

Related info for your journey

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

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Alternative routes for Australia to St. Louis

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Complete your trip

Complete your trip to St. Louis by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

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Search flights from Australia to St. Louis by cabin class

Find flights from Australia to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Australia and St. Louis flights

Browse other Australia and St. Louis flight options. Last updated on 10 October 2026.

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Top 3 airlines flying from Australia to St. Louis

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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 10 October 2026.

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 10 October 2026.

Last-minute flights from Australia to St. Louis
Discover last-minute flight deals from Australia to St. Louis. Data last updated 10 October 2026 and is based on user searches.

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 10 October 2026.