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

American Airlines, United Airlines, and Qantas Airways can get you from Australia to St. Louis in just under 21h 20m. Your travel time can differ by up to 8h 19m. 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 Qantas Airways, United Airlines 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.

$863+ 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 14 August 2026.

Wed 7/1006:05 -

3 stops43h 35m

Wed 21/1010:35 -

3 stops34h 15m

Deal found 9/8$1,338

Wed 2/906:05 -

3 stops49h 06m

Wed 23/912:17 -

3 stops32h 33m

Deal found 11/8$1,382

Wed 9/910:00 -

2 stops24h 58m

Tue 15/917:59 -

2 stops46h 51m

Deal found 12/8$1,464

Sat 10/1009:45 -

2 stops24h 35m

Mon 2/1119:05 -

2 stops23h 25m

Deal found 12/8$1,650

Wed 7/1010:10 -

1 stop29h 36m

Wed 21/1006:04 -

1 stop34h 01m

Deal found 9/8$1,674

Sat 10/1014:35 -

1 stop19h 45m

Mon 2/1119:05 -

1 stop40h 55m

Deal found 12/8$1,685

Tue 17/1114:05 -

1 stop20h 49m

Tue 1/1214:54 -

1 stop23h 01m

Deal found 12/8$1,693

Thu 19/1111:20 -

2 stops25h 57m

Sun 29/1114:54 -

2 stops25h 06m

Deal found 12/8$1,720

Mon 16/1114:05 -

1 stop23h 14m

Tue 1/1212:58 -

2 stops27h 02m

Deal found 12/8$1,732

Tue 17/1111:20 -

2 stops23h 34m

Tue 1/1214:54 -

2 stops25h 06m

Deal found 12/8$1,739

Mon 12/1010:10 -

2 stops24h 10m

Thu 5/1114:54 -

2 stops25h 06m

Deal found 11/8$1,742

Wed 21/1010:10 -

2 stops24h 10m

Sat 14/1114:54 -

2 stops25h 06m

Deal found 10/8$1,743

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 14 August 2026.

Tue 26/111:20 -

1 stop29h 39m

Sat 30/116:57 -

2 stops32h 03m

Deal found 13/8$1,613

Wed 18/1111:50 -

1 stop23h 15m

Wed 2/1216:17 -

1 stop21h 43m

Deal found 12/8$1,746

Mon 12/1013:00 -

1 stop21h 20m

Thu 5/1114:54 -

1 stop23h 01m

Deal found 11/8$1,763

Sat 14/1111:50 -

2 stops27h 25m

Mon 23/1110:53 -

3 stops28h 42m

Deal found 10/8$2,041

Wed 27/112:10 -

2 stops27h 49m

Sun 31/111:31 -

2 stops43h 39m

Deal found 13/8$2,484

Wed 10/223:40 -

2 stops41h 04m

Sun 14/211:34 -

2 stops37h 16m

Deal found 13/8$2,541

Mon 21/1210:10 -

2 stops54h 08m

Tue 5/107:30 -

2 stops31h 30m

Deal found 13/8$2,874

Tue 1/1211:50 -

1 stop23h 03m

Sat 6/219:06 -

1 stop42h 14m

Deal found 13/8$1,747

Sat 10/1011:55 -

2 stops24h 41m

Mon 2/1113:08 -

3 stops27h 22m

Deal found 12/8$1,811

Wed 21/1009:55 -

3 stops29h 49m

Sat 14/1113:40 -

3 stops27h 55m

Deal found 10/8$2,041

Wed 26/809:10 -

2 stops38h 14m

Sun 30/818:45 -

1 stop21h 10m

Deal found 10/8$2,079

Sun 15/1111:20 -

1 stop29h 25m

Thu 3/1219:06 -

2 stops31h 49m

Deal found 12/8$2,097

Mon 12/1010:30 -

2 stops22h 07m

Thu 5/1113:08 -

3 stops26h 57m

Deal found 11/8$1,817

Tue 19/111:50 -

2 stops21h 36m

Fri 12/213:08 -

3 stops26h 57m

Deal found 12/8$1,817

Wed 27/113:10 -

2 stops40h 29m

Sun 31/110:12 -

1 stop28h 18m

Deal found 13/8$2,272

Sat 10/1008:35 -

3 stops31h 09m

Mon 2/1113:40 -

3 stops28h 15m

Deal found 12/8$2,374

Wed 18/1111:20 -

2 stops22h 30m

Thu 3/1219:06 -

1 stop21h 14m

Deal found 12/8$1,817

Mon 14/1210:10 -

2 stops28h 23m

Fri 8/114:15 -

2 stops24h 45m

Deal found 10/8$2,955

Tue 22/918:15 -

3 stops44h 28m

Thu 24/906:00 -

2 stops37h 50m

Deal found 10/8$2,960

Mon 7/921:00 -

2 stops40h 59m

Sun 27/918:43 -

2 stops26h 57m

Deal found 11/8$2,704

Tue 8/916:30 -

3 stops46h 13m

Tue 15/918:00 -

2 stops44h 55m

Deal found 11/8$2,708

Fri 18/918:15 -

3 stops44h 28m

Sat 26/917:00 -

3 stops47h 35m

Deal found 10/8$3,016

Wed 27/109:40 -

1 stop18h 52m

Sun 31/116:57 -

1 stop21h 33m

Deal found 13/8$2,914

Mon 28/910:55 -

2 stops25h 26m

Mon 5/1013:29 -

2 stops27h 01m

Deal found 13/8$2,194

Tue 8/916:30 -

3 stops46h 13m

Mon 14/908:30 -

2 stops46h 45m

Deal found 10/8$2,715

Tue 8/917:05 -

3 stops31h 19m

Tue 22/913:49 -

2 stops25h 56m

Deal found 10/8$2,817

Sun 13/920:50 -

2 stops41h 40m

Thu 1/1006:00 -

1 stop32h 00m

Deal found 10/8$3,169

Fri 18/918:15 -

3 stops44h 28m

Sat 26/911:01 -

2 stops32h 49m

Deal found 10/8$2,848

Tue 26/106:30 -

2 stops47h 02m

Sat 30/116:57 -

2 stops51h 13m

Deal found 13/8$3,214

Tue 25/810:30 -

2 stops21h 36m

Sat 29/818:54 -

2 stops44h 36m

Deal found 11/8$3,120

Find flight deals from Australia to St. Louis

Round-trip from	$1,338
One-way from	$863
Popular in	April
Cheapest in	September
Average price	$1,508

7/10-21/10
6 total stops
77h 50m total
Australia to St. Louis

Search Deals

Delta
2/11
2 total stops
27h 59m total
Australia to St. Louis

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($319 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($69 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 26/1

11:20-23:59

1 stop29h 39m

Lambert-St Louis

Sat 30/1

16:57-18:00

2 stops32h 03m

$1,613

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 18/11

11:50-18:05

1 stop23h 15m

Lambert-St Louis

Wed 2/12

16:17-07:00

1 stop21h 43m

$1,746

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 1/12

11:50-17:53

1 stop23h 03m

Lambert-St Louis

Sat 6/2

19:06-06:20

1 stop42h 14m

$1,747

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 12/10

13:00-18:20

1 stop21h 20m

Lambert-St Louis

Thu 5/11

14:54-06:55

1 stop23h 01m

$1,763

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Sat 10/10

11:55-20:36

2 stops24h 41m

Lambert-St Louis

Mon 2/11

13:08-09:30

3 stops27h 22m

$1,811

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 12/10

10:30-16:37

2 stops22h 07m

Lambert-St Louis

Thu 5/11

13:08-09:05

3 stops26h 57m

$1,817

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

11:50-16:26

2 stops21h 36m

Lambert-St Louis

Fri 12/2

13:08-09:05

3 stops26h 57m

$1,817

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 18/11

11:20-16:50

2 stops22h 30m

Lambert-St Louis

Thu 3/12

19:06-09:20

1 stop21h 14m

$1,817

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sat 14/11

11:50-22:15

2 stops27h 25m

Lambert-St Louis

Mon 23/11

10:53-08:35

3 stops28h 42m

$2,041

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

09:55-23:44

3 stops29h 49m

Lambert-St Louis

Sat 14/11

13:40-10:35

3 stops27h 55m

$2,041

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 46 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

MEL-STL

BNE-STL

LST-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

MEL-STL

BNE-STL

LST-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 $1,162). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,163). 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

1,081 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

1,081 reviews

Qantas Airways

7.5

Good

1,081 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

United Airlines

7.4

Good

10,108 reviews

Qantas Airways

7.5

Good

1,081 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

American Airlines

7.1

Good

11,927 reviews

Qantas Airways

7.5

Good

1,081 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 Qantas Airways can get you from Australia to St. Louis in just under 21h 20m. Your travel time can differ by up to 8h 19m. 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 $1,162). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,163). 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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Alternative routes for Australia to St. Louis

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Devonport to St. Louis flights

Top 3 airlines flying from Australia to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Qantas Airways	Cheapest$1,104	Average$1,960	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
United Airlines	Cheapest$1,160	Average$1,591	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$1,475	Average$1,778	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

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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?

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Cheap flights from Australia to St. Louis from $863

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 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 14 August 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 14 August 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 14 August 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 14 August 2026.

Last-minute flights from Australia to St. LouisDiscover last-minute flight deals from Australia to St. Louis. Data last updated 14 August 2026 and is based on user searches.

Discover last-minute flight deals from Australia to St. Louis. Data last updated 14 August 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 14 August 2026.

Search for one-way flight options from Australia to St. Louis. Find affordable one-way fares based on user searches. Data last updated 14 August 2026.

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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

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

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 14 August 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 14 August 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 14 August 2026.

Last-minute flights from Australia to St. Louis
Discover last-minute flight deals from Australia to St. Louis. Data last updated 14 August 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 14 August 2026.