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

Departing from St. Louis to Australia will take you 22h 05m. Airlines will cover a distance of 8745 mi. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in Australia ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Australia when rainfall is around 2.0 in.

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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

The most popular flight routes from St. Louis to Australia are Lambert-St Louis - Sydney Kingsford Smith, Lambert-St Louis - Melbourne and Lambert-St Louis - Melbourne Avalon.

What are the most popular airlines that fly from St. Louis to Australia?

Consider United Airlines, Qantas Airways or American Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to Australia.

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

When flying from St. Louis to Australia, 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 from for flights from St. Louis to Australia?

For a flight from St. Louis to Australia, you will be flying from 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 St. Louis to Australia that include hotel bookings?

Yes. In addition to deals on St. Louis to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Australia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Australia.

Can I find deals for business class flights from St. Louis to Australia?

Yes. Cheapflights offers flight deals from St. Louis to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$587+ Flights from St. Louis to Australia

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Cheap flight deals from St. Louis to Australia

Cheapest flights from St. Louis to Australia
Explore the most affordable flight options available from St. Louis to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 29, 2025.

Tue 12/306:20 amSTL - SYD

1 stop33h 40mQantas Airways

Sun 1/118:55 amSYD - STL

2 stops32h 04mQantas Airways

Deal found 12/27

$1,064

Wed 12/316:41 amSTL - MEL

1 stop34h 19mUnited Airlines

Wed 1/1411:30 amMEL - STL

2 stops26h 28mUnited Airlines

Deal found 12/27

$1,280

Wed 12/314:05 pmSTL - AVV

3 stops62h 10mMultiple Airlines

Wed 1/148:55 pmAVV - STL

3 stops59h 34mMultiple Airlines

Deal found 12/27

$1,888

Wed 12/314:05 pmSTL - MEL

3 stops53h 35mMultiple Airlines

Wed 1/147:25 amMEL - STL

3 stops49h 04mMultiple Airlines

Deal found 12/27

$2,042

Sat 12/277:20 amSTL - SYD

2 stops32h 10mDelta

Fri 1/910:40 amSYD - STL

2 stops27h 03mDelta

Deal found 12/26

$2,109

Sat 12/275:45 pmSTL - SYD

2 stops43h 35mUnited Airlines

Fri 1/912:10 pmSYD - STL

1 stop20h 27mUnited Airlines

Deal found 12/26

$2,170

Tue 12/306:41 amSTL - SYD

1 stop30h 39mUnited Airlines

Thu 1/18:30 amSYD - STL

2 stops25h 14mUnited Airlines

Deal found 12/26

$2,174

Wed 12/316:20 amSTL - MEL

1 stop34h 10mAmerican Airlines

Wed 1/1412:00 pmMEL - STL

1 stop28h 59mAmerican Airlines

Deal found 12/29

$2,232

Wed 12/316:20 amSTL - MEL

1 stop34h 10mQantas Airways

Wed 1/144:05 pmMEL - STL

1 stop20h 24mQantas Airways

Deal found 12/28

$2,629

Tue 12/307:00 amSTL - SYD

1 stop30h 55mQantas Airways

Thu 1/111:20 amSYD - STL

1 stop29h 31mQantas Airways

Deal found 12/26

$2,646

Wed 12/316:05 amSTL - MEL

3 stops32h 55mDelta

Wed 1/1410:10 amMEL - STL

2 stops28h 25mDelta

Deal found 12/27

$2,749

Sun 12/286:30 amSTL - SYD

2 stops30h 50mUnited Airlines

Sun 1/42:00 pmSYD - STL

2 stops25h 22mUnited Airlines

Deal found 12/27

$2,875

Best flights from St. Louis to Australia
Discover carefully curated flight deals from St. Louis to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 29, 2025.

Thu 2/126:30 amSTL - SYD

1 stop33h 30mQantas Airways

Thu 2/192:35 pmSYD - STL

2 stops43h 30mQantas Airways

Deal found 12/28

$941

Tue 2/175:25 pmSTL - BNE

1 stop22h 05mUnited Airlines

Thu 2/1911:40 amBNE - STL

1 stop21h 04mUnited Airlines

Deal found 12/26

$1,192

Fri 4/312:28 pmSTL - MEL

2 stops28h 22mDelta

Sun 4/1910:00 amMEL - STL

2 stops28h 33mDelta

Deal found 12/27

$1,219

Sat 1/174:05 pmSTL - BNE

2 stops48h 40mAir Canada

Mon 2/910:45 amBNE - STL

2 stops44h 44mAir Canada

Deal found 12/28

$1,260

Fri 4/311:47 amSTL - MEL

1 stop26h 13mMultiple Airlines

Sun 4/198:15 amMEL - STL

2 stops22h 56mMultiple Airlines

Deal found 12/27

$1,261

Mon 4/2011:14 amSTL - PER

2 stops46h 26mCathay Pacific

Sun 5/39:15 amPER - STL

2 stops50h 14mCathay Pacific

Deal found 12/27

$1,426

Wed 4/227:00 amSTL - PER

2 stops39h 55mQatar Airways

Mon 4/2710:45 pmPER - STL

2 stops38h 14mQatar Airways

Deal found 12/27

$1,593

Sat 1/175:04 pmSTL - BNE

2 stops46h 26mQantas Airways

Mon 2/97:40 pmBNE - STL

1 stop20h 19mQantas Airways

Deal found 12/28

$1,002

Sun 3/156:38 amSTL - SYD

1 stop34h 22mQantas Airways

Tue 3/247:15 pmSYD - STL

2 stops37h 58mQantas Airways

Deal found 12/27

$1,009

Fri 4/39:45 amSTL - MEL

2 stops31h 05mDelta

Sun 4/1210:00 amMEL - STL

2 stops22h 07mDelta

Deal found 12/28

$1,219

Fri 4/311:46 amSTL - MEL

1 stop26h 14mMultiple Airlines

Sun 4/129:00 amMEL - STL

2 stops22h 11mMultiple Airlines

Deal found 12/28

$1,261

Wed 2/115:00 pmSTL - MEL

1 stop24h 00mUnited Airlines

Wed 2/181:00 pmMEL - STL

1 stop20h 44mUnited Airlines

Deal found 12/28

$1,287

Fri 1/167:04 amSTL - BNE

1 stop30h 41mQantas Airways

Mon 2/26:30 pmBNE - STL

2 stops45h 29mQantas Airways

Deal found 12/28

$1,083

Sat 1/174:05 pmSTL - BNE

3 stops54h 15mMultiple Airlines

Mon 2/910:45 amBNE - STL

2 stops44h 44mMultiple Airlines

Deal found 12/28

$1,271

Fri 4/37:05 pmSTL - MEL

1 stop22h 10mUnited Airlines

Sun 4/1910:55 amMEL - STL

1 stop22h 29mUnited Airlines

Deal found 12/27

$1,287

Wed 3/116:38 amSTL - MEL

1 stop34h 52mQantas Airways

Wed 3/1812:00 pmMEL - STL

1 stop27h 59mQantas Airways

Deal found 12/28

$1,119

Wed 4/226:00 pmSTL - PER

2 stops39h 40mCathay Pacific

Tue 4/2812:10 amPER - STL

2 stops35h 19mCathay Pacific

Deal found 12/27

$1,494

Sun 4/57:05 pmSTL - MEL

1 stop22h 10mUnited Airlines

Tue 4/1410:55 amMEL - STL

1 stop22h 29mUnited Airlines

Deal found 12/28

$1,287

Sun 4/197:00 amSTL - PER

2 stops46h 50mQatar Airways

Tue 4/283:40 pmPER - STL

2 stops45h 19mQatar Airways

Deal found 12/27

$1,593

Tue 4/2111:14 amSTL - PER

2 stops46h 26mCathay Pacific

Sun 5/39:15 amPER - STL

2 stops50h 14mCathay Pacific

Deal found 12/27

$1,501

Sat 5/26:30 amSTL - SYD

2 stops36h 05mQantas Airways

Sat 5/1612:00 pmSYD - STL

1 stop21h 17mQantas Airways

Deal found 12/27

$1,151

Sun 4/56:50 pmSTL - AVV

2 stops30h 15mMultiple Airlines

Tue 4/146:00 amAVV - STL

2 stops32h 16mMultiple Airlines

Deal found 12/28

$1,403

Thu 4/237:00 amSTL - PER

2 stops39h 55mQatar Airways

Thu 4/303:40 pmPER - STL

2 stops45h 19mQatar Airways

Deal found 12/27

$1,593

Mon 5/46:30 amSTL - SYD

2 stops39h 45mQantas Airways

Mon 5/1812:00 pmSYD - STL

1 stop21h 17mQantas Airways

Deal found 12/28

$1,151

Tue 4/216:00 pmSTL - PER

2 stops39h 40mCathay Pacific

Wed 4/2912:10 amPER - STL

2 stops34h 38mCathay Pacific

Deal found 12/27

$1,569

Sun 4/197:00 amSTL - PER

2 stops46h 50mQatar Airways

Mon 4/2710:45 pmPER - STL

2 stops38h 14mQatar Airways

Deal found 12/27

$1,593

Tue 2/107:04 amSTL - SYD

1 stop31h 21mQantas Airways

Tue 2/1711:20 amSYD - STL

1 stop29h 28mQantas Airways

Deal found 12/27

$1,152

Sun 4/197:00 amSTL - PER

2 stops46h 50mQatar Airways

Wed 4/293:40 pmPER - STL

2 stops45h 19mQatar Airways

Deal found 12/27

$1,593

Wed 3/114:05 pmSTL - AVV

3 stops63h 10mMultiple Airlines

Wed 3/186:00 amAVV - STL

3 stops49h 29mMultiple Airlines

Deal found 12/28

$1,678

Fri 6/56:30 amSTL - SYD

1 stop33h 35mQantas Airways

Sat 6/1312:00 pmSYD - STL

1 stop19h 10mQantas Airways

Deal found 12/28

$1,152

Last-minute flights from St. Louis to Australia
Discover last-minute flight deals from St. Louis to Australia. Data last updated December 29, 2025 and is based on user searches.

Tue 12/306:20 amSTL - SYD

1 stop33h 40mQantas Airways

Sun 1/118:55 amSYD - STL

2 stops32h 04mQantas Airways

Deal found 12/27

$1,064

Wed 12/316:41 amSTL - MEL

1 stop34h 19mUnited Airlines

Wed 1/1411:30 amMEL - STL

2 stops26h 28mUnited Airlines

Deal found 12/27

$1,280

Fri 1/22:45 pmSTL - MEL

2 stops26h 15mUnited Airlines

Thu 1/2211:30 amMEL - STL

2 stops23h 13mUnited Airlines

Deal found 12/28

$1,292

Fri 1/167:04 amSTL - BNE

1 stop30h 41mQantas Airways

Mon 2/26:30 pmBNE - STL

2 stops45h 29mQantas Airways

Deal found 12/28

$1,083

Fri 1/164:05 pmSTL - BNE

3 stops53h 20mMultiple Airlines

Mon 2/26:10 amBNE - STL

3 stops49h 19mMultiple Airlines

Deal found 12/28

$1,287

Fri 1/164:05 pmSTL - BNE

2 stops48h 40mAir Canada

Mon 2/26:35 amBNE - STL

3 stops48h 54mAir Canada

Deal found 12/28

$1,410

Sat 1/175:04 pmSTL - BNE

2 stops46h 26mQantas Airways

Mon 2/97:40 pmBNE - STL

1 stop20h 19mQantas Airways

Deal found 12/28

$1,002

Sat 1/174:05 pmSTL - BNE

2 stops48h 40mAir Canada

Mon 2/910:45 amBNE - STL

2 stops44h 44mAir Canada

Deal found 12/28

$1,260

Sat 1/174:05 pmSTL - BNE

3 stops54h 15mMultiple Airlines

Mon 2/910:45 amBNE - STL

2 stops44h 44mMultiple Airlines

Deal found 12/28

$1,271

Wed 1/217:04 amSTL - PER

2 stops33h 51mCathay Pacific

Tue 2/178:30 amPER - STL

2 stops29h 18mCathay Pacific

Deal found 12/26

$1,429

Sun 1/257:04 amSTL - SYD

2 stops55h 31mQantas Airways

Sun 2/111:20 amSYD - STL

1 stop29h 39mQantas Airways

Deal found 12/28

$941

Sun 1/252:45 pmSTL - SYD

2 stops25h 50mMultiple Airlines

Sun 2/111:20 amSYD - STL

2 stops45h 09mMultiple Airlines

Deal found 12/28

$1,230

One-way flights from St. Louis to Australia
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated December 29, 2025.

Sat 1/244:15 pmSTL - BNE

2 stops47h 15mUnited Airlines

Deal found 12/27

$587

Fri 2/1310:11 pmSTL - SYD

2 stops40h 14mMultiple Airlines

Deal found 12/27

$665

Mon 3/24:30 pmSTL - SYD

2 stops24h 05mMultiple Airlines

Deal found 12/28

$670

Mon 3/24:05 pmSTL - SYD

2 stops48h 30mAir Canada

Deal found 12/27

$672

Sun 4/56:50 pmSTL - SYD

1 stop21h 05mQantas Airways

Deal found 12/26

$750

Tue 1/209:57 amSTL - SYD

2 stops27h 23mUnited Airlines

Deal found 12/27

$763

Mon 1/121:07 pmSTL - SYD

3 stops37h 38mMultiple Airlines

Deal found 12/27

$767

Sat 1/243:46 pmSTL - BNE

3 stops59h 09mMultiple Airlines

Deal found 12/27

$810

Fri 2/1310:10 amSTL - SYD

1 stop27h 50mUnited Airlines

Deal found 12/27

$833

Mon 3/24:39 pmSTL - SYD

1 stop21h 21mUnited Airlines

Deal found 12/27

$852

Sat 1/244:05 pmSTL - BNE

2 stops48h 40mAir Canada

Deal found 12/27

$1,336

Find flight deals from St. Louis to Australia

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$918 (oojo)
One-way from	$587 (United Airlines)
Popular in	December
Cheapest in	August
Average price	$1,766

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

Search Deals

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

Search Deals

From Lambert-St Louis to Australia

Search Deals

One-way flight from Lambert-St Louis to Australia

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($70 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($29 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 St. Louis to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 2/12

6:30 am-9:00 am

1 stop33h 30m

Sydney Kingsford Smith

Thu 2/19

2:35 pm-5:05 pm

2 stops43h 30m

$941

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 1/17

5:04 pm-7:30 am

2 stops46h 26m

Brisbane

Mon 2/9

7:40 pm-11:59 pm

1 stop20h 19m

$1,002

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 3/15

6:38 am-9:00 am

1 stop34h 22m

Sydney Kingsford Smith

Tue 3/24

7:15 pm-5:13 pm

2 stops37h 58m

$1,009

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Fri 1/16

7:04 am-5:45 am

1 stop30h 41m

Brisbane

Mon 2/2

6:30 pm-11:59 pm

2 stops45h 29m

$1,083

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Wed 3/11

6:38 am-9:30 am

1 stop34h 52m

Melbourne

Wed 3/18

12:00 pm-11:59 pm

1 stop27h 59m

$1,119

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 5/2

6:30 am-9:35 am

2 stops36h 05m

Sydney Kingsford Smith

Sat 5/16

12:00 pm-6:17 pm

1 stop21h 17m

$1,151

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

6:30 am-1:15 pm

2 stops39h 45m

Sydney Kingsford Smith

Mon 5/18

12:00 pm-6:17 pm

1 stop21h 17m

$1,151

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 2/10

7:04 am-7:25 am

1 stop31h 21m

Sydney Kingsford Smith

Tue 2/17

11:20 am-11:48 pm

1 stop29h 28m

$1,152

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 6/5

6:30 am-7:05 am

1 stop33h 35m

Sydney Kingsford Smith

Sat 6/13

12:00 pm-4:10 pm

1 stop19h 10m

$1,152

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Tue 2/17

5:25 pm-7:30 am

1 stop22h 05m

Brisbane

Thu 2/19

11:40 am-4:44 pm

1 stop21h 04m

$1,192

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 41 results

...

Best time to book a flight from St. Louis to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from St. Louis 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 St. Louis to Australia

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Australia (average of $705). Flying from St. Louis to Australia in June is currently the most expensive (average of $1,259). 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 Australia

Read reviews from past customers who have flown Fiji Airways, Qantas Airways, and United Airlines from St. Louis to Australia. 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.

Fiji Airways

8.0

Very good

212 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

Fiji Airways

8.0

Very good

212 reviews

Fiji Airways

8.0

Very good

212 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

Qantas Airways

7.5

Good

957 reviews

Fiji Airways

8.0

Very good

212 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

United Airlines

7.4

Good

9,120 reviews

Fiji Airways

8.0

Very good

212 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

American Airlines

7.2

Good

11,066 reviews

Fiji Airways

8.0

Very good

212 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

Air Canada

7.1

Good

10,563 reviews

Fiji Airways

8.0

Very good

212 reviews

Reviews

1 / 17

10.0

Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

Related info for your journey

What airport do you fly from for flights from St. Louis to Australia?
For a flight from St. Louis to Australia, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.
How long is the flight from St. Louis to Australia?
Departing from St. Louis to Australia will take you 22h 05m. Airlines will cover a distance of 8745 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the most popular routes from St. Louis to Australia?
The most popular flight routes from St. Louis to Australia are Lambert-St Louis - Sydney Kingsford Smith, Lambert-St Louis - Melbourne and Lambert-St Louis - Melbourne Avalon.
Can I find deals for flights from St. Louis to Australia that include hotel bookings?
Yes. In addition to deals on St. Louis to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Australia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Australia.
Can I find deals for business class flights from St. Louis to Australia?
Yes. Cheapflights offers flight deals from St. Louis to Australia 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 St. Louis to Australia?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Australia (average of $705). Flying from St. Louis to Australia in June is currently the most expensive (average of $1,259). 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

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

Australia car rentals

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Victoria car rentals

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Top 5 airlines flying from St. Louis to Australia

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$897	Average$1,260	FlexibilityNo cancel fee	On-time67%
Qantas Airways	Cheapest$975	Average$1,372	FlexibilityNo cancel fee	On-time74%
United Airlines	Cheapest$1,027	Average$1,490	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$1,118	Average$1,455	FlexibilityNo cancel fee	On-time71%
Fiji Airways	Cheapest$1,132	Average$1,296	FlexibilityNo cancel fee	On-time74%

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$587+ Cheap flights from St. Louis (STL) to Australia

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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from St. Louis to Australia

Cheapest flights from St. Louis to AustraliaExplore the most affordable flight options available from St. Louis to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 29, 2025.

Explore the most affordable flight options available from St. Louis to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 29, 2025.

Find flight deals from St. Louis to Australia

Keep the following information in mind while searching for St. Louis to Australia flight deals. Data was last updated December 29, 2025.

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Reviews of airlines servicing Australia

Read reviews from past customers who have flown Fiji Airways, Qantas Airways, and United Airlines from St. Louis to Australia. 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

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

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

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Alternative routes for St. Louis to Australia

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Cheapest flights from St. Louis to Australia
Explore the most affordable flight options available from St. Louis to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 29, 2025.