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

American Airlines, United Airlines, and Cathay Pacific can get you from Australia to St. Louis in just under 22h 34m. Your travel time can differ by up to 21h. Airlines will cover a distance of 14074 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.

$860+ 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 30 August 2026.

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1015:20 -

1 stop23h 35m

Deal found 25/8$1,616

Tue 13/1010:10 -

1 stop29h 36m

Thu 5/1112:58 -

1 stop24h 57m

Deal found 30/8$1,617

Tue 20/1010:10 -

1 stop29h 36m

Sat 24/1008:48 -

2 stops34h 57m

Deal found 29/8$1,645

Mon 12/1009:05 -

2 stops24h 15m

Mon 19/1006:04 -

1 stop31h 56m

Deal found 28/8$1,651

Thu 8/1013:00 -

1 stop21h 20m

Thu 15/1006:04 -

2 stops36h 26m

Deal found 27/8$1,655

Mon 12/1008:10 -

2 stops25h 10m

Mon 19/1014:31 -

2 stops23h 29m

Deal found 28/8$1,676

Wed 23/909:10 -

1 stop29h 20m

Wed 30/906:30 -

1 stop33h 35m

Deal found 26/8$1,744

Wed 23/910:20 -

2 stops21h 14m

Wed 30/913:29 -

2 stops26h 26m

Deal found 26/8$1,763

Wed 23/909:10 -

2 stops26h 42m

Wed 30/911:01 -

2 stops29h 04m

Deal found 26/8$1,765

Mon 12/1006:05 -

3 stops45h 35m

Mon 19/1008:00 -

2 stops31h 30m

Deal found 27/8$1,779

Wed 16/1211:20 -

2 stops22h 56m

Wed 13/108:30 -

1 stop31h 00m

Deal found 29/8$1,874

Sat 10/1008:00 -

2 stops25h 20m

Sat 17/1015:20 -

2 stops26h 00m

Deal found 26/8$1,958

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 30 August 2026.

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1015:20 -

1 stop23h 35m

Deal found 25/8$1,616

Wed 13/111:20 -

1 stop22h 34m

Wed 27/108:30 -

1 stop31h 00m

Deal found 29/8$1,659

Mon 12/1008:10 -

2 stops25h 10m

Mon 19/1014:31 -

2 stops23h 29m

Deal found 28/8$1,676

Fri 25/1210:40 -

2 stops28h 11m

Thu 28/106:30 -

2 stops33h 00m

Deal found 29/8$2,209

Wed 4/1100:50 -

2 stops39h 09m

Mon 9/1107:00 -

2 stops35h 45m

Deal found 29/8$2,312

Wed 21/1010:20 -

2 stops22h 17m

Sat 24/1013:36 -

2 stops26h 59m

Deal found 25/8$2,526

Wed 21/1022:05 -

3 stops39h 16m

Sat 24/1008:00 -

3 stops67h 25m

Deal found 25/8$2,660

Thu 5/1113:10 -

1 stop23h 32m

Mon 9/1108:10 -

1 stop29h 40m

Deal found 25/8$3,058

Wed 23/909:10 -

1 stop29h 20m

Wed 30/906:30 -

1 stop33h 35m

Deal found 26/8$1,744

Tue 13/1010:30 -

2 stops22h 31m

Thu 5/1113:08 -

3 stops26h 57m

Deal found 30/8$1,814

Sat 26/922:15 -

2 stops35h 28m

Sat 3/1016:42 -

2 stops36h 18m

Deal found 29/8$2,576

Tue 20/1022:05 -

3 stops39h 16m

Sat 24/1008:00 -

3 stops67h 25m

Deal found 27/8$2,668

Tue 13/1011:55 -

3 stops27h 49m

Thu 5/1107:30 -

3 stops34h 05m

Deal found 30/8$2,590

Thu 17/1210:10 -

2 stops31h 36m

Wed 6/110:45 -

2 stops28h 15m

Deal found 30/8$2,872

Fri 25/1211:50 -

2 stops22h 18m

Thu 28/113:09 -

3 stops26h 56m

Deal found 29/8$2,614

Wed 16/1210:10 -

2 stops28h 18m

Wed 6/110:45 -

2 stops28h 15m

Deal found 30/8$2,872

Tue 15/1212:45 -

1 stop22h 08m

Tue 5/113:08 -

2 stops28h 22m

Deal found 27/8$2,643

Thu 5/1113:35 -

2 stops48h 07m

Mon 9/1108:10 -

2 stops36h 00m

Deal found 25/8$3,257

Thu 10/916:30 -

3 stops46h 13m

Sun 13/905:00 -

2 stops39h 15m

Deal found 27/8$2,724

Mon 14/1212:45 -

1 stop22h 08m

Tue 5/119:06 -

1 stop22h 24m

Deal found 27/8$2,643

Sat 6/217:05 -

2 stops41h 36m

Tue 9/207:04 -

2 stops40h 36m

Deal found 25/8$3,446

Wed 16/1212:45 -

2 stops25h 14m

Wed 6/111:00 -

2 stops29h 30m

Deal found 28/8$2,661

Sat 10/1006:30 -

3 stops28h 18m

Sat 17/1015:20 -

3 stops29h 55m

Deal found 26/8$3,035

Sun 20/1211:30 -

2 stops28h 00m

Tue 5/108:30 -

1 stop33h 00m

Deal found 29/8$2,717

Fri 5/212:45 -

1 stop22h 08m

Tue 9/219:06 -

1 stop22h 24m

Deal found 27/8$2,759

Fri 18/1212:45 -

2 stops27h 53m

Sat 2/117:07 -

1 stop24h 23m

Deal found 29/8$2,788

Fri 18/1212:45 -

2 stops27h 53m

Mon 4/118:09 -

2 stops47h 21m

Deal found 30/8$2,872

Thu 10/910:55 -

1 stop22h 04m

Sun 13/908:42 -

1 stop32h 33m

Deal found 27/8$2,906

Thu 5/1106:20 -

2 stops28h 45m

Mon 9/1113:08 -

3 stops32h 57m

Deal found 25/8$3,416

Find flight deals from Australia to St. Louis

Round-trip from	$1,481
One-way from	$860
Popular in	April
Cheapest in	September
Average price	$1,485

American Airlines
5/2-9/2
3 total stops
57h 02m 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 ($308 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($67 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

Wed 21/10

10:10-13:44

2 stops43h 34m

Lambert-St Louis

Sat 24/10

15:20-06:55

1 stop23h 35m

$1,616

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Wed 13/1

11:20-17:54

1 stop22h 34m

Lambert-St Louis

Wed 27/1

08:30-07:30

1 stop31h 00m

$1,659

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Mon 12/10

08:10-18:20

2 stops25h 10m

Lambert-St Louis

Mon 19/10

14:31-05:00

2 stops23h 29m

$1,676

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 23/9

09:10-23:30

1 stop29h 20m

Lambert-St Louis

Wed 30/9

06:30-07:05

1 stop33h 35m

$1,744

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 13/10

10:30-17:01

2 stops22h 31m

Lambert-St Louis

Thu 5/11

13:08-09:05

3 stops26h 57m

$1,814

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Fri 25/12

10:40-21:51

2 stops28h 11m

Lambert-St Louis

Thu 28/1

06:30-08:30

2 stops33h 00m

$2,209

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Wed 4/11

00:50-23:59

2 stops39h 09m

Lambert-St Louis

Mon 9/11

07:00-10:45

2 stops35h 45m

$2,312

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:20-16:37

2 stops22h 17m

Lambert-St Louis

Sat 24/10

13:36-08:35

2 stops26h 59m

$2,526

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Sat 26/9

22:15-18:43

2 stops35h 28m

Lambert-St Louis

Sat 3/10

16:42-20:00

2 stops36h 18m

$2,576

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 13/10

11:55-23:44

3 stops27h 49m

Lambert-St Louis

Thu 5/11

07:30-10:35

3 stops34h 05m

$2,590

Flights are sorted by cheapest return flights first.

Deals found on 26/8

Showing 1-10 of 33 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.

MEL-STL

BNE-STL

SYD-STL

LST-STL

DPO-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

MEL-STL

BNE-STL

SYD-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 $1,144). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,130). 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

1,087 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

1,087 reviews

Qantas Airways

7.5

Good

1,087 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

United Airlines

7.4

Good

10,138 reviews

Qantas Airways

7.5

Good

1,087 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

American Airlines

7.1

Good

12,017 reviews

Qantas Airways

7.5

Good

1,087 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 Cathay Pacific can get you from Australia to St. Louis in just under 22h 34m. Your travel time can differ by up to 21h. 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 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 $1,144). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,130). 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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Cairns to Kansas City flights

Devonport to St. Louis flights

Top 3 airlines flying from Australia to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Qantas Airways	Cheapest$1,087	Average$1,930	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
United Airlines	Cheapest$1,142	Average$1,729	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$1,453	Average$1,976	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.

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Cheap flights from Australia to St. Louis from $860

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 30 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 30 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 30 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 30 August 2026.

Last-minute flights from Australia to St. LouisDiscover last-minute flight deals from Australia to St. Louis. Data last updated 30 August 2026 and is based on user searches.

Discover last-minute flight deals from Australia to St. Louis. Data last updated 30 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 30 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 30 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

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.

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 30 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 30 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 30 August 2026.

Last-minute flights from Australia to St. Louis
Discover last-minute flight deals from Australia to St. Louis. Data last updated 30 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 30 August 2026.