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

A quick flight from Australia to St. Louis can take about 25h 48m. Air Canada provides one of the quickest options available for as low as $1,181. The distance from Australia to St. Louis is about 9054 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the most popular routes from Australia to St. Louis?

When deciding which route to take from Australia to St. Louis consider Sydney Kingsford Smith - Lambert-St Louis, Devonport - Lambert-St Louis or Launceston - Lambert-St Louis as they are the most popular.

What airport do you fly into for flights to St. Louis from Australia?

For a flight from Australia to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

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 vacation 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.

$584+ Flights from Australia to St. Louis

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Australia to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Australia to St. Louis

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 diciembre 10, 2025.

vie. 12/191:00 pmMEL - STL

2 stops49h 55mUnited Airlines

sáb. 1/36:35 pmSTL - MEL

2 stops46h 25mUnited Airlines

Deal found 12/9

$875

vie. 12/1912:10 pmMEL - STL

3 stops27h 12mMultiple Airlines

sáb. 1/36:30 amSTL - MEL

3 stops33h 55mMultiple Airlines

Deal found 12/9

$2,866

vie. 12/194:05 pmMEL - STL

1 stop20h 25mAmerican Airlines

sáb. 1/311:41 amSTL - MEL

1 stop24h 19mAmerican Airlines

Deal found 12/9

$2,969

Best flights from Australia to St. Louis
Discover carefully curated flight deals from Australia to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 10, 2025.

sáb. 1/246:20 amSYD - STL

2 stops25h 21mMultiple Airlines

sáb. 1/315:04 pmSTL - SYD

2 stops36h 11mMultiple Airlines

Deal found 12/9

$1,105

jue. 1/1511:20 amSYD - STL

2 stops45h 09mAir Canada

dom. 2/152:45 pmSTL - SYD

2 stops49h 50mAir Canada

Deal found 12/9

$1,128

jue. 1/1512:10 pmSYD - STL

2 stops25h 48mUnited Airlines

mar. 2/174:39 pmSTL - SYD

1 stop21h 21mUnited Airlines

Deal found 12/9

$1,181

sáb. 1/177:05 amSYD - STL

2 stops26h 09mQantas Airways

sáb. 2/215:55 pmSTL - SYD

2 stops33h 55mQantas Airways

Deal found 12/9

$1,194

jue. 1/1511:20 amSYD - STL

2 stops22h 35mUnited Airlines

dom. 2/154:39 pmSTL - SYD

1 stop21h 21mUnited Airlines

Deal found 12/9

$1,181

sáb. 1/177:05 amSYD - STL

2 stops26h 09mQantas Airways

vie. 2/205:55 pmSTL - SYD

2 stops26h 05mQantas Airways

Deal found 12/9

$1,194

jue. 1/1511:50 amSYD - STL

1 stop21h 02mUnited Airlines

mié. 2/184:39 pmSTL - SYD

1 stop21h 21mUnited Airlines

Deal found 12/8

$1,183

sáb. 1/176:05 amSYD - STL

2 stops27h 09mQantas Airways

lun. 2/166:50 pmSTL - SYD

2 stops33h 40mQantas Airways

Deal found 12/9

$1,194

mié. 2/188:30 pmLST - STL

2 stops44h 18mQantas Airways

dom. 2/226:30 amSTL - LST

2 stops41h 05mQantas Airways

Deal found 12/8

$2,000

mié. 2/116:30 amDPO - STL

2 stops29h 59mQantas Airways

dom. 2/156:30 amSTL - DPO

2 stops44h 35mQantas Airways

Deal found 12/8

$2,054

Last-minute flights from Australia to St. Louis
Discover last-minute flight deals from Australia to St. Louis. Data last updated diciembre 10, 2025 and is based on user searches.

vie. 12/191:00 pmMEL - STL

2 stops49h 55mUnited Airlines

sáb. 1/36:35 pmSTL - MEL

2 stops46h 25mUnited Airlines

Deal found 12/9

$875

mié. 1/149:55 pmSYD - STL

2 stops33h 52mQantas Airways

mié. 2/185:55 pmSTL - SYD

2 stops34h 35mQantas Airways

Deal found 12/9

$1,196

mié. 1/147:40 pmSYD - STL

2 stops36h 07mQantas Airways

jue. 2/196:50 pmSTL - SYD

2 stops25h 10mQantas Airways

Deal found 12/8

$1,198

jue. 1/154:00 pmSYD - STL

2 stops40h 29mAir Canada

mié. 2/188:41 amSTL - SYD

2 stops31h 54mAir Canada

Deal found 12/9

$1,128

jue. 1/154:00 pmSYD - STL

2 stops64h 29mAir Canada

mar. 2/178:41 amSTL - SYD

2 stops31h 54mAir Canada

Deal found 12/8

$1,130

jue. 1/1511:50 amSYD - STL

1 stop21h 02mUnited Airlines

mié. 2/184:39 pmSTL - SYD

1 stop21h 21mUnited Airlines

Deal found 12/9

$1,181

jue. 1/152:00 pmSYD - STL

2 stops23h 58mUnited Airlines

mar. 2/175:25 pmSTL - SYD

1 stop22h 50mUnited Airlines

Deal found 12/8

$1,183

vie. 1/1611:20 amSYD - STL

2 stops45h 09mAir Canada

lun. 2/162:45 pmSTL - SYD

2 stops25h 50mAir Canada

Deal found 12/9

$1,171

sáb. 1/176:05 amSYD - STL

2 stops27h 09mQantas Airways

mar. 2/173:31 pmSTL - SYD

2 stops37h 24mQantas Airways

Deal found 12/9

$1,194

sáb. 1/176:05 amSYD - STL

2 stops27h 09mQantas Airways

lun. 2/166:30 amSTL - SYD

1 stop33h 30mQantas Airways

Deal found 12/9

$1,204

sáb. 1/1711:20 amSYD - STL

1 stop29h 39mAmerican Airlines

mar. 2/1711:46 amSTL - SYD

2 stops28h 14mAmerican Airlines

Deal found 12/9

$1,213

sáb. 1/246:20 amSYD - STL

2 stops25h 21mMultiple Airlines

sáb. 1/315:04 pmSTL - SYD

2 stops36h 11mMultiple Airlines

Deal found 12/9

$1,105

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 diciembre 10, 2025.

mié. 1/1410:10 amMEL - STL

2 stops28h 25mDelta

Deal found 12/9

$584

dom. 3/156:05 amSYD - STL

2 stops25h 19mQantas Airways

Deal found 12/8

$655

mar. 12/166:05 amSYD - STL

2 stops34h 52mQantas Airways

Deal found 12/8

$705

dom. 3/152:00 pmSYD - STL

3 stops49h 59mMultiple Airlines

Deal found 12/8

$794

mar. 12/1612:10 pmSYD - STL

1 stop21h 17mMultiple Airlines

Deal found 12/9

$1,128

mié. 1/1412:00 pmMEL - STL

1 stop28h 59mAmerican Airlines

Deal found 12/10

$1,460

mié. 1/144:05 pmMEL - STL

1 stop20h 24mQantas Airways

Deal found 12/9

$1,519

lun. 3/911:50 amSYD - STL

1 stop44h 15mUnited Airlines

Deal found 12/9

$1,975

mar. 12/1611:45 amSYD - STL

3 stops46h 05mCathay Pacific

Deal found 12/8

$2,393

Find flight deals from Australia to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,105 (Trip.com)
One-way from	$584 (Delta)
Popular in	May
Cheapest in	August
Average price	$1,607

Provider with most accurate pricing for Sydney Kingsford Smith-Lambert-St Louis flight deals.

Search Deals

Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Lambert-St Louis flights.

Search Deals

From Australia to Lambert-St Louis

Search Deals

One-way flight from Australia to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 2% potential increase in price ($34 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

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

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

sáb. 1/24

6:20 am-2:41 pm

2 stops25h 21m

Lambert-St Louis

sáb. 1/31

5:04 pm-10:15 pm

2 stops36h 11m

$1,105

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

jue. 1/15

11:20 am-3:29 pm

2 stops45h 09m

Lambert-St Louis

dom. 2/15

2:45 pm-9:35 am

2 stops49h 50m

$1,128

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

jue. 1/15

12:10 pm-8:58 pm

2 stops25h 48m

Lambert-St Louis

mar. 2/17

4:39 pm-7:00 am

1 stop21h 21m

$1,181

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

jue. 1/15

11:20 am-4:55 pm

2 stops22h 35m

Lambert-St Louis

dom. 2/15

4:39 pm-7:00 am

1 stop21h 21m

$1,181

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

jue. 1/15

11:50 am-3:52 pm

1 stop21h 02m

Lambert-St Louis

mié. 2/18

4:39 pm-7:00 am

1 stop21h 21m

$1,183

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

sáb. 1/17

7:05 am-4:14 pm

2 stops26h 09m

Lambert-St Louis

sáb. 2/21

5:55 pm-8:50 pm

2 stops33h 55m

$1,194

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

sáb. 1/17

7:05 am-4:14 pm

2 stops26h 09m

Lambert-St Louis

vie. 2/20

5:55 pm-1:00 pm

2 stops26h 05m

$1,194

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

sáb. 1/17

6:05 am-4:14 pm

2 stops27h 09m

Lambert-St Louis

lun. 2/16

6:50 pm-9:30 pm

2 stops33h 40m

$1,194

LauncestonSt. Louis

LST - STL

LSTSTL

Launceston

mié. 2/18

8:30 pm-11:48 pm

2 stops44h 18m

Lambert-St Louis

dom. 2/22

6:30 am-4:35 pm

2 stops41h 05m

$2,000

DevonportSt. Louis

DPO - STL

DPOSTL

Devonport

mié. 2/11

6:30 am-7:29 pm

2 stops29h 59m

Lambert-St Louis

dom. 2/15

6:30 am-8:05 pm

2 stops44h 35m

$2,054

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 19 results

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.

Estimated round-trip 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

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

Currently, November is the cheapest month in which you can book a flight from Australia to St. Louis (average of $744). Flying from Australia to St. Louis in April is currently the most expensive (average of $1,110). 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.

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

A simple way to save on the total cost of your ticket is to fly from Australia to St. Louis in the afternoon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight at noon.

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Qantas Airways and United Airlines from Australia to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Qantas Airways

7.5

Good

947 reviews

Reviews

1 / 20

6.0

Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

Qantas Airways

7.5

Good

947 reviews

Qantas Airways

7.5

Good

947 reviews

Reviews

1 / 20

6.0

Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

United Airlines

7.4

Good

9,093 reviews

Qantas Airways

7.5

Good

947 reviews

Reviews

1 / 20

6.0

Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

Related info for your journey

What airport do you fly into for flights to St. Louis from Australia?
For a flight from Australia to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.
How long is the flight from Australia to St. Louis?
A quick flight from Australia to St. Louis can take about 25h 48m. Air Canada provides one of the quickest options available for as low as $1,181. The distance from Australia to St. Louis is about 9054 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the most popular routes from Australia to St. Louis?
When deciding which route to take from Australia to St. Louis consider Sydney Kingsford Smith - Lambert-St Louis, Devonport - Lambert-St Louis or Launceston - Lambert-St Louis as they are the most popular.
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 vacation 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, November is the cheapest month in which you can book a flight from Australia to St. Louis (average of $744). Flying from Australia to St. Louis in April is currently the most expensive (average of $1,110). 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

Edwardsville

O'Fallon

Fairview Heights

Maryland Heights

Collinsville

Swansea

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Australia to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$822	Average$1,431	FlexibilityNo cancel fee	On-time69%
Qantas Airways	Cheapest$1,110	Average$1,789	FlexibilityNo cancel fee	On-time74%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$584+ Cheap flights from Australia to St. Louis (STL)

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Australia to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 diciembre 10, 2025.

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 diciembre 10, 2025.

Find flight deals from Australia to St. Louis

Keep the following information in mind while searching for Australia to St. Louis flight deals. Data was last updated diciembre 10, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Everything you need to know about your flight from Australia to St. Louis

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

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

Find hourly flight availability from Australia to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 10, 2025.

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Qantas Airways and United Airlines from Australia to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Australia to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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?

Traveling to a place near 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.

Top 2 airlines flying from Australia to St. Louis

100% Free

Book with Flexibility

Travel Smart

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 diciembre 10, 2025.