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

American Airlines, United Airlines, and Delta can get you from Australia to St. Louis in just under 22h 20m. Your travel time can differ by up to 21h 14m. Airlines will cover a distance of 15255 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.

$888+ 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 24 September 2026.

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1006:32 -

1 stop32h 23m

Deal found 23/9$1,620

Thu 5/1109:40 -

2 stops51h 02m

Mon 9/1116:11 -

2 stops46h 19m

Deal found 19/9$1,682

Tue 3/1112:45 -

1 stop22h 20m

Tue 10/1105:00 -

2 stops36h 30m

Deal found 19/9$1,823

Thu 5/1112:45 -

1 stop22h 20m

Thu 12/1106:15 -

2 stops35h 15m

Deal found 21/9$1,825

Thu 5/1112:45 -

2 stops27h 39m

Thu 12/1110:53 -

2 stops30h 37m

Deal found 21/9$1,844

Fri 6/1110:40 -

2 stops30h 14m

Fri 13/1112:28 -

2 stops27h 02m

Deal found 21/9$1,883

Fri 6/1114:05 -

1 stop24h 54m

Fri 13/1108:10 -

1 stop29h 15m

Deal found 21/9$1,886

Thu 5/1112:00 -

1 stop23h 16m

Thu 12/1108:10 -

1 stop32h 20m

Deal found 21/9$1,970

Thu 5/1111:00 -

2 stops24h 16m

Thu 12/1110:21 -

1 stop25h 39m

Deal found 21/9$2,041

Wed 4/1100:50 -

2 stops39h 09m

Mon 9/1107:26 -

2 stops35h 19m

Deal found 22/9$2,332

Thu 5/1112:10 -

3 stops28h 14m

Thu 12/1107:30 -

3 stops34h 25m

Deal found 21/9$2,451

Tue 3/1108:00 -

3 stops48h 26m

Tue 10/1116:05 -

3 stops52h 30m

Deal found 19/9$2,522

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 24 September 2026.

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1006:32 -

1 stop32h 23m

Deal found 23/9$1,620

Tue 3/1112:45 -

1 stop22h 20m

Tue 10/1105:00 -

2 stops36h 30m

Deal found 19/9$1,823

Wed 4/1100:50 -

2 stops39h 09m

Mon 9/1107:26 -

2 stops35h 19m

Deal found 22/9$2,332

Fri 5/223:40 -

2 stops37h 06m

Tue 9/213:45 -

2 stops35h 05m

Deal found 23/9$2,417

Fri 25/1210:10 -

2 stops27h 56m

Sat 2/119:38 -

2 stops43h 22m

Deal found 19/9$2,563

Sun 18/1017:55 -

2 stops37h 25m

Sun 25/1006:04 -

2 stops43h 26m

Deal found 20/9$2,600

Wed 21/1022:05 -

3 stops39h 16m

Sat 24/1008:00 -

3 stops67h 25m

Deal found 23/9$2,666

Tue 3/1111:00 -

2 stops23h 55m

Tue 10/1113:20 -

3 stops28h 00m

Deal found 19/9$2,829

Sun 18/1022:55 -

3 stops52h 05m

Sun 25/1016:05 -

3 stops63h 15m

Deal found 20/9$2,931

Thu 5/1109:40 -

2 stops51h 02m

Mon 9/1116:11 -

2 stops46h 19m

Deal found 19/9$1,682

Wed 21/1015:50 -

2 stops38h 40m

Sat 24/1006:02 -

2 stops45h 18m

Deal found 23/9$2,539

Wed 23/1210:10 -

2 stops45h 34m

Wed 30/1206:00 -

2 stops33h 00m

Deal found 19/9$2,685

Thu 7/111:30 -

2 stops27h 43m

Thu 21/108:30 -

1 stop33h 00m

Deal found 20/9$2,863

Sun 18/1022:55 -

3 stops52h 05m

Sun 25/1016:05 -

3 stops56h 40m

Deal found 20/9$2,935

Wed 16/1210:10 -

2 stops30h 16m

Tue 5/107:30 -

2 stops31h 30m

Deal found 23/9$2,914

Thu 17/1211:50 -

1 stop34h 36m

Sun 27/1206:11 -

1 stop34h 09m

Deal found 22/9$2,919

Thu 17/1210:10 -

2 stops31h 36m

Wed 6/107:30 -

2 stops31h 30m

Deal found 23/9$2,914

Wed 21/1011:20 -

1 stop23h 23m

Sat 24/1015:12 -

1 stop23h 48m

Deal found 20/9$2,994

Fri 18/1211:50 -

2 stops26h 18m

Sat 26/1209:35 -

2 stops30h 30m

Deal found 21/9$3,221

Thu 5/1107:05 -

3 stops27h 00m

Mon 9/1110:53 -

2 stops28h 37m

Deal found 23/9$3,231

Find flight deals from Australia to St. Louis

Round-trip from	$1,620
One-way from	$1,149
Popular in	April
Cheapest in	July
Average price	$1,901

American Airlines
21/10-24/10
3 total stops
75h 57m total
Australia to St. Louis

Search Deals

United Airlines
2/11-31/12
1 total stop
22h 20m total
Australia to St. Louis

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($267 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($64 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

10:10-21:09

2 stops27h 59m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$888

Fastest return journey

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

$1,149

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Fri 8/1

10:40-21:41

2 stops27h 01m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,444

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

06:32-06:55

1 stop32h 23m

$1,620

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Thu 5/11

09:40-20:42

2 stops51h 02m

Lambert-St Louis

Mon 9/11

16:11-06:30

2 stops46h 19m

$1,682

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Tue 3/11

12:45-18:05

1 stop22h 20m

Lambert-St Louis

Tue 10/11

05:00-10:30

2 stops36h 30m

$1,823

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Sat 9/1

09:40-18:30

1 stop24h 50m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,904

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Fri 1/1

11:20-23:38

2 stops52h 18m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,944

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Fri 8/1

07:15-14:56

3 stops47h 41m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$2,081

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Fri 8/1

09:40-18:30

1 stop24h 50m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$2,093

Flights are sorted by cheapest return flights first.

Deals found on 24/9

Showing 1-10 of 29 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.

SYD-STL

PER-STL

MEL-STL

BNE-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

SYD-STL

PER-STL

MEL-STL

BNE-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 $1,228). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,301). 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

1,101 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

1,101 reviews

Qantas Airways

7.5

Good

1,101 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

United Airlines

7.4

Good

10,233 reviews

Qantas Airways

7.5

Good

1,101 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

American Airlines

7.0

Good

12,074 reviews

Qantas Airways

7.5

Good

1,101 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?
American Airlines, United Airlines, and Delta can get you from Australia to St. Louis in just under 22h 20m. Your travel time can differ by up to 21h 14m. Airlines will cover a distance of 15255 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 $1,228). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,301). 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

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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$1,159	Average$1,792	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$1,472	Average$2,003	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Qantas Airways	Cheapest$1,500	Average$1,994	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.

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Cheap flights from Australia to St. Louis from $888

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 24 September 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 24 September 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 24 September 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 24 September 2026.

Last-minute flights from Australia to St. LouisDiscover last-minute flight deals from Australia to St. Louis. Data last updated 24 September 2026 and is based on user searches.

Discover last-minute flight deals from Australia to St. Louis. Data last updated 24 September 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 24 September 2026.

Search for one-way flight options from Australia to St. Louis. Find affordable one-way fares based on user searches. Data last updated 24 September 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

Book a non-stop flight to one of these other cities located in United States.

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 24 September 2026.

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Top 3 airlines flying from Australia to St. Louis

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How does Cheapflights help users find flights 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 24 September 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 24 September 2026.

Last-minute flights from Australia to St. Louis
Discover last-minute flight deals from Australia to St. Louis. Data last updated 24 September 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 24 September 2026.