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

United Airlines, Delta, and American Airlines can get you from Australia to St. Louis in just under 25h 04m. Your travel time can differ by up to 13h 28m. 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.

$780+ 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 25 October 2026.

Wed 18/1114:05 -

1 stop24h 54m

Tue 1/1206:00 -

1 stop34h 00m

Deal found 21/10$1,344

Sat 21/1109:40 -

1 stop28h 34m

Sat 28/1110:21 -

1 stop28h 09m

Deal found 24/10$1,362

Sat 21/1109:40 -

2 stops23h 19m

Sat 28/1113:25 -

2 stops25h 05m

Deal found 24/10$1,399

Sat 21/1112:00 -

1 stop26h 13m

Sat 28/1106:00 -

1 stop34h 30m

Deal found 24/10$1,584

Sat 21/1111:10 -

1 stop29h 48m

Sat 28/1110:21 -

1 stop27h 34m

Deal found 24/10$1,612

Sat 21/1111:15 -

1 stop29h 43m

Sat 28/1107:41 -

1 stop30h 14m

Deal found 24/10$1,727

Sat 21/1106:00 -

3 stops29h 05m

Sat 28/1105:00 -

2 stops36h 30m

Deal found 24/10$1,753

Sat 21/1111:20 -

2 stops29h 04m

Sat 28/1113:08 -

2 stops26h 57m

Deal found 24/10$1,866

Sat 21/1106:00 -

2 stops28h 05m

Sat 28/1105:00 -

2 stops36h 10m

Deal found 24/10$1,869

Thu 5/1113:10 -

2 stops40h 33m

Mon 9/1114:28 -

2 stops47h 22m

Deal found 20/10$2,297

Sat 21/1107:05 -

3 stops27h 00m

Sat 28/1111:15 -

2 stops28h 15m

Deal found 24/10$2,352

Sat 21/1122:55 -

2 stops33h 10m

Sat 28/1118:55 -

2 stops31h 05m

Deal found 24/10$2,398

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 25 October 2026.

Tue 2/311:20 -

2 stops25h 34m

Mon 22/313:08 -

2 stops26h 22m

Deal found 24/10$1,349

Tue 19/110:40 -

2 stops38h 32m

Wed 3/206:45 -

2 stops32h 45m

Deal found 21/10$1,456

Sat 21/1112:00 -

2 stops25h 04m

Sat 28/1106:00 -

1 stop34h 30m

Deal found 24/10$1,618

Sat 21/1122:55 -

2 stops33h 10m

Sat 28/1118:55 -

2 stops31h 05m

Deal found 24/10$2,398

Fri 5/223:40 -

2 stops37h 09m

Tue 9/214:11 -

2 stops34h 39m

Deal found 23/10$2,472

Sat 21/1111:00 -

3 stops25h 39m

Sat 28/1118:55 -

2 stops23h 10m

Deal found 24/10$2,565

Sat 6/311:20 -

2 stops22h 46m

Sat 27/319:04 -

2 stops44h 26m

Deal found 24/10$1,349

Wed 3/311:20 -

1 stop22h 57m

Sat 27/319:04 -

2 stops44h 26m

Deal found 24/10$1,349

Mon 1/311:20 -

2 stops26h 03m

Thu 25/315:21 -

2 stops24h 09m

Deal found 24/10$1,349

Sat 21/1111:10 -

1 stop29h 48m

Sat 28/1113:25 -

2 stops24h 30m

Deal found 24/10$1,649

Tue 19/113:20 -

1 stop21h 57m

Wed 3/208:30 -

1 stop28h 50m

Deal found 21/10$1,456

Tue 2/209:40 -

1 stop24h 50m

Sat 6/211:22 -

1 stop27h 08m

Deal found 22/10$1,820

Tue 2/211:20 -

2 stops21h 53m

Sat 6/215:03 -

2 stops48h 27m

Deal found 21/10$1,459

Wed 31/310:10 -

1 stop29h 46m

Sun 4/414:24 -

2 stops25h 01m

Deal found 21/10$2,121

Wed 31/316:50 -

2 stops36h 49m

Sun 4/410:30 -

2 stops40h 25m

Deal found 20/10$2,599

Sat 21/1106:00 -

3 stops29h 05m

Sat 28/1105:00 -

2 stops36h 30m

Deal found 24/10$1,753

Sat 21/1123:10 -

2 stops28h 48m

Sat 28/1120:12 -

3 stops49h 48m

Deal found 24/10$2,913

Fri 4/1211:10 -

1 stop26h 30m

Fri 11/1214:54 -

2 stops25h 06m

Deal found 20/10$2,304

Sat 21/1111:20 -

2 stops29h 04m

Sat 28/1113:08 -

2 stops26h 57m

Deal found 24/10$1,866

Wed 16/1212:45 -

1 stop22h 26m

Wed 6/108:30 -

1 stop33h 00m

Deal found 22/10$2,734

Fri 5/212:45 -

2 stops24h 53m

Tue 9/213:17 -

3 stops27h 13m

Deal found 20/10$2,736

Fri 18/1212:45 -

1 stop33h 21m

Mon 4/108:48 -

2 stops31h 42m

Deal found 21/10$2,812

Sat 19/1212:00 -

2 stops58h 06m

Wed 6/108:30 -

1 stop33h 00m

Deal found 22/10$3,016

Find flight deals from Australia to St. Louis

Round-trip from	$1,344
One-way from	$780
Popular in	January
Cheapest in	July
Average price	$1,781

American Airlines
18/11-1/12
2 total stops
58h 54m total
Australia to St. Louis

Search Deals

19/11-31/12
3 total stops
38h 28m total
Australia to St. Louis

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($474 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($142 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

Thu 19/11

13:35-11:03

3 stops38h 28m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$783

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Thu 19/11

10:10-23:22

2 stops30h 12m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$882

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

$885

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

$893

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Thu 19/11

12:45-18:05

1 stop22h 20m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$893

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

$963

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

$966

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Thu 1/4

11:50-10:20

3 stops37h 30m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,077

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Fri 13/11

11:50-23:24

3 stops28h 34m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,261

BrisbaneSt. Louis

BNE Brisbane - STL Lambert-St Louis

BNESTL

Brisbane

Tue 2/3

11:20-20:54

2 stops25h 34m

Lambert-St Louis

Mon 22/3

13:08-06:30

2 stops26h 22m

$1,349

Flights are sorted by cheapest return flights first.

Deals found on 20/10

Showing 1-10 of 41 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

BNE-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

SYD-STL

BNE-STL

MEL-STL

PER-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 $1,300). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,311). 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

1,116 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

1,116 reviews

Qantas Airways

7.5

Good

1,116 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

United Airlines

7.3

Good

10,436 reviews

Qantas Airways

7.5

Good

1,116 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

American Airlines

7.0

Good

12,194 reviews

Qantas Airways

7.5

Good

1,116 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?
United Airlines, Delta, and American Airlines can get you from Australia to St. Louis in just under 25h 04m. Your travel time can differ by up to 13h 28m. 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 $1,300). Flying from Australia to St. Louis in April is currently the most expensive (average of $2,311). 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$1,164	Average$1,784	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$1,293	Average$2,022	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Qantas Airways	Cheapest$1,487	Average$1,978	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 $780

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/11. 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 25 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 25 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 25 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 25 October 2026.

Last-minute flights from Australia to St. LouisDiscover last-minute flight deals from Australia to St. Louis. Data last updated 25 October 2026 and is based on user searches.

Discover last-minute flight deals from Australia to St. Louis. Data last updated 25 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 25 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 25 October 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

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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 25 October 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 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 25 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 25 October 2026.

Last-minute flights from Australia to St. Louis
Discover last-minute flight deals from Australia to St. Louis. Data last updated 25 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 25 October 2026.