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

Departing from St. Louis to Australia will take you 32h 25m. Airlines will cover a distance of 9479 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 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.

$670+ 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 9, 2025.

Mon 12/85:30 pmSTL - BNE

1 stop22h 00mUnited Airlines

Fri 12/1211:40 amBNE - STL

1 stop20h 47mUnited Airlines

Deal found 12/6

$1,038

Tue 12/91:35 pmSTL - SYD

2 stops24h 20mAir Canada

Tue 12/1611:20 amSYD - STL

2 stops42h 19mAir Canada

Deal found 12/8

$1,149

Mon 12/81:35 pmSTL - SYD

2 stops27h 00mAir Canada

Mon 12/1511:20 amSYD - STL

2 stops42h 19mAir Canada

Deal found 12/7

$1,234

Wed 12/318:05 amSTL - MEL

2 stops32h 25mUnited Airlines

Wed 1/141:00 pmMEL - STL

2 stops25h 13mUnited Airlines

Deal found 12/7

$1,284

Sun 12/141:35 pmSTL - MEL

2 stops26h 55mUnited Airlines

Sun 12/2111:30 amMEL - STL

2 stops28h 13mUnited Airlines

Deal found 12/7

$1,290

Sun 12/146:15 amSTL - BNE

2 stops33h 15mUnited Airlines

Sun 12/217:35 amBNE - STL

2 stops30h 20mUnited Airlines

Deal found 12/7

$1,306

Thu 12/111:20 pmSTL - MEL

1 stop22h 40mQantas Airways

Sat 12/1312:00 pmMEL - STL

1 stop28h 57mQantas Airways

Deal found 12/7

$1,363

Wed 12/101:20 pmSTL - MEL

1 stop22h 40mQantas Airways

Thu 1/87:20 pmMEL - STL

2 stops36h 27mQantas Airways

Deal found 12/7

$1,376

Mon 12/81:20 pmSTL - MEL

2 stops39h 30mQantas Airways

Fri 12/1212:00 pmMEL - STL

1 stop28h 57mQantas Airways

Deal found 12/6

$1,444

Mon 12/85:30 pmSTL - MEL

1 stop23h 30mUnited Airlines

Fri 12/121:00 pmMEL - STL

1 stop20h 27mUnited Airlines

Deal found 12/7

$1,476

Thu 12/111:20 pmSTL - SYD

2 stops25h 40mQantas Airways

Sat 12/135:30 pmSYD - STL

2 stops36h 04mQantas Airways

Deal found 12/7

$1,493

Wed 12/101:20 pmSTL - MEL

1 stop22h 40mQantas Airways

Fri 12/1212:00 pmMEL - STL

1 stop28h 57mQantas Airways

Deal found 12/6

$1,513

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 9, 2025.

Thu 1/224:05 pmSTL - BNE

2 stops48h 40mAir Canada

Thu 1/2910:45 amBNE - STL

2 stops44h 44mAir Canada

Deal found 12/8

$952

Thu 1/224:05 pmSTL - BNE

2 stops48h 40mMultiple Airlines

Thu 1/296:10 amBNE - STL

3 stops49h 19mMultiple Airlines

Deal found 12/8

$969

Wed 1/217:04 amSTL - BNE

2 stops56h 26mQantas Airways

Wed 1/287:40 pmBNE - STL

1 stop20h 19mQantas Airways

Deal found 12/7

$981

Wed 1/285:12 pmSTL - SYD

1 stop20h 43mAmerican Airlines

Wed 2/45:45 pmSYD - STL

1 stop23h 14mAmerican Airlines

Deal found 12/7

$1,147

Wed 12/318:05 amSTL - MEL

2 stops32h 25mUnited Airlines

Wed 1/141:00 pmMEL - STL

2 stops25h 13mUnited Airlines

Deal found 12/7

$1,284

Tue 2/176:30 amSTL - CNS

2 stops35h 25mCathay Pacific

Sat 2/2111:25 amCNS - STL

2 stops28h 23mCathay Pacific

Deal found 12/6

$1,579

Wed 1/214:05 pmSTL - BNE

2 stops24h 40mAir Canada

Wed 1/2810:45 amBNE - STL

2 stops44h 44mAir Canada

Deal found 12/7

$1,024

Fri 2/67:04 amSTL - SYD

2 stops36h 56mQantas Airways

Tue 2/102:05 pmSYD - STL

1 stop19h 09mQantas Airways

Deal found 12/6

$1,103

Mon 5/42:33 pmSTL - SYD

2 stops25h 47mMultiple Airlines

Mon 5/189:20 amSYD - STL

2 stops44h 56mMultiple Airlines

Deal found 12/7

$1,134

Thu 1/223:37 pmSTL - BNE

1 stop22h 53mAmerican Airlines

Thu 1/299:40 amBNE - STL

1 stop21h 07mAmerican Airlines

Deal found 12/8

$1,177

Sat 5/24:05 pmSTL - SYD

2 stops48h 15mAir Canada

Sat 5/169:20 amSYD - STL

2 stops44h 56mAir Canada

Deal found 12/7

$1,112

Sat 5/92:43 pmSTL - CBR

3 stops49h 47mQatar Airways

Wed 5/1312:55 pmCBR - STL

3 stops38h 14mQatar Airways

Deal found 12/6

$2,451

Sun 1/43:10 pmSTL - MEL

2 stops25h 50mUnited Airlines

Tue 1/2011:30 amMEL - STL

2 stops26h 28mUnited Airlines

Deal found 12/8

$1,290

Thu 1/2211:55 amSTL - BNE

1 stop26h 35mQantas Airways

Thu 1/2912:10 pmBNE - STL

1 stop27h 49mQantas Airways

Deal found 12/8

$1,174

Wed 1/214:05 pmSTL - BNE

2 stops24h 40mMultiple Airlines

Wed 1/286:10 amBNE - STL

3 stops49h 19mMultiple Airlines

Deal found 12/7

$1,220

Fri 2/66:00 pmSTL - SYD

2 stops46h 35mAir Canada

Tue 2/1011:20 amSYD - STL

2 stops26h 38mAir Canada

Deal found 12/6

$1,120

Sun 12/141:35 pmSTL - MEL

2 stops26h 55mUnited Airlines

Sun 12/2111:30 amMEL - STL

2 stops28h 13mUnited Airlines

Deal found 12/7

$1,290

Mon 5/41:30 pmSTL - SYD

3 stops50h 50mAir Canada

Mon 5/189:20 amSYD - STL

2 stops44h 56mAir Canada

Deal found 12/8

$1,139

Thu 1/155:04 pmSTL - MEL

2 stops32h 41mMultiple Airlines

Thu 1/227:00 amMEL - STL

2 stops29h 29mMultiple Airlines

Deal found 12/9

$1,288

Mon 1/56:35 pmSTL - MEL

2 stops45h 55mUnited Airlines

Mon 1/1911:30 amMEL - STL

2 stops22h 25mUnited Airlines

Deal found 12/8

$1,307

Fri 1/211:41 amSTL - MEL

1 stop24h 19mQantas Airways

Thu 1/224:05 pmMEL - STL

1 stop20h 24mQantas Airways

Deal found 12/7

$1,398

Wed 1/2111:20 amSTL - MEL

2 stops29h 40mUnited Airlines

Wed 1/281:00 pmMEL - STL

2 stops25h 13mUnited Airlines

Deal found 12/7

$1,385

Thu 1/227:04 amSTL - BNE

3 stops42h 06mCathay Pacific

Thu 1/296:10 amBNE - STL

3 stops33h 49mCathay Pacific

Deal found 12/8

$1,991

Fri 1/26:41 amSTL - MEL

1 stop34h 19mUnited Airlines

Thu 1/2211:30 amMEL - STL

2 stops26h 28mUnited Airlines

Deal found 12/7

$1,397

Fri 4/34:05 pmSTL - AVV

3 stops61h 10mMultiple Airlines

Sun 4/198:55 pmAVV - STL

3 stops57h 29mMultiple Airlines

Deal found 12/7

$1,601

Fri 2/206:30 amSTL - HBA

2 stops38h 25mQantas Airways

Tue 2/246:05 amHBA - STL

2 stops28h 00mQantas Airways

Deal found 12/6

$1,736

Wed 12/314:05 pmSTL - AVV

3 stops62h 10mMultiple Airlines

Wed 1/148:55 pmAVV - STL

3 stops59h 34mMultiple Airlines

Deal found 12/9

$1,884

Sat 5/96:30 amSTL - CBR

2 stops36h 40mQantas Airways

Wed 5/1310:00 amCBR - STL

2 stops23h 17mQantas Airways

Deal found 12/6

$1,977

Wed 1/215:00 pmSTL - CNS

2 stops29h 00mUnited Airlines

Wed 1/286:00 amCNS - STL

2 stops25h 37mUnited Airlines

Deal found 12/7

$1,814

Thu 1/154:05 pmSTL - AVV

3 stops62h 10mMultiple Airlines

Thu 1/226:00 amAVV - STL

3 stops50h 29mMultiple Airlines

Deal found 12/9

$2,557

Last-minute flights from St. Louis to Australia
Discover last-minute flight deals from St. Louis to Australia. Data last updated December 9, 2025 and is based on user searches.

Mon 12/85:30 pmSTL - BNE

1 stop22h 00mUnited Airlines

Fri 12/1211:40 amBNE - STL

1 stop20h 47mUnited Airlines

Deal found 12/6

$1,038

Tue 12/91:35 pmSTL - SYD

2 stops24h 20mAir Canada

Tue 12/1611:20 amSYD - STL

2 stops42h 19mAir Canada

Deal found 12/8

$1,149

Wed 1/217:04 amSTL - BNE

2 stops56h 26mQantas Airways

Wed 1/287:40 pmBNE - STL

1 stop20h 19mQantas Airways

Deal found 12/7

$981

Wed 1/214:05 pmSTL - BNE

2 stops24h 40mAir Canada

Wed 1/2810:45 amBNE - STL

2 stops44h 44mAir Canada

Deal found 12/7

$1,024

Wed 1/2111:20 amSTL - SYD

2 stops26h 00mUnited Airlines

Wed 1/2812:10 pmSYD - STL

1 stop20h 27mUnited Airlines

Deal found 12/7

$1,163

Wed 1/214:05 pmSTL - BNE

2 stops24h 40mMultiple Airlines

Wed 1/286:10 amBNE - STL

3 stops49h 19mMultiple Airlines

Deal found 12/7

$1,220

Thu 1/224:05 pmSTL - BNE

2 stops48h 40mAir Canada

Thu 1/2910:45 amBNE - STL

2 stops44h 44mAir Canada

Deal found 12/8

$952

Thu 1/224:05 pmSTL - BNE

2 stops48h 40mMultiple Airlines

Thu 1/296:10 amBNE - STL

3 stops49h 19mMultiple Airlines

Deal found 12/8

$969

Thu 1/2211:55 amSTL - BNE

1 stop26h 35mQantas Airways

Thu 1/2912:10 pmBNE - STL

1 stop27h 49mQantas Airways

Deal found 12/8

$1,174

Thu 1/223:37 pmSTL - BNE

1 stop22h 53mAmerican Airlines

Thu 1/299:40 amBNE - STL

1 stop21h 07mAmerican Airlines

Deal found 12/8

$1,177

Wed 1/287:04 amSTL - SYD

1 stop32h 56mQantas Airways

Wed 2/47:05 amSYD - STL

2 stops33h 54mQantas Airways

Deal found 12/7

$983

Wed 1/2811:55 amSTL - SYD

1 stop26h 00mAmerican Airlines

Wed 2/42:05 pmSYD - STL

1 stop22h 24mAmerican Airlines

Deal found 12/7

$1,147

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 9, 2025.

Mon 3/24:30 pmSTL - SYD

2 stops24h 05mMultiple Airlines

Deal found 12/7

$670

Mon 3/24:05 pmSTL - SYD

2 stops48h 30mAir Canada

Deal found 12/9

$672

Sun 2/156:50 pmSTL - MEL

1 stop41h 10mQantas Airways

Deal found 12/9

$681

Sun 2/152:45 pmSTL - MEL

2 stops26h 15mUnited Airlines

Deal found 12/9

$695

Fri 5/14:05 pmSTL - SYD

2 stops48h 15mAir Canada

Deal found 12/6

$715

Mon 3/210:10 amSTL - SYD

1 stop27h 50mUnited Airlines

Deal found 12/9

$763

Sun 2/153:19 pmSTL - MEL

3 stops49h 01mMultiple Airlines

Deal found 12/9

$770

Fri 5/16:30 amSTL - SYD

1 stop33h 35mQantas Airways

Deal found 12/6

$780

Fri 1/239:57 amSTL - SYD

2 stops30h 18mUnited Airlines

Deal found 12/8

$838

Fri 1/237:39 pmSTL - SYD

3 stops55h 06mMultiple Airlines

Deal found 12/8

$895

Find flight deals from St. Louis to Australia

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$952 (Air Canada)
One-way from	$670 (Air Canada)
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 ($76 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($28 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. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Thu 1/22

4:05 pm-8:45 am

2 stops48h 40m

Brisbane

Thu 1/29

10:45 am-3:29 pm

2 stops44h 44m

$952

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Thu 1/22

4:05 pm-8:45 am

2 stops48h 40m

Brisbane

Thu 1/29

6:10 am-3:29 pm

3 stops49h 19m

$969

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Wed 1/21

7:04 am-7:30 am

2 stops56h 26m

Brisbane

Wed 1/28

7:40 pm-11:59 pm

1 stop20h 19m

$981

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Wed 1/21

4:05 pm-8:45 am

2 stops24h 40m

Brisbane

Wed 1/28

10:45 am-3:29 pm

2 stops44h 44m

$1,024

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 2/6

7:04 am-1:00 pm

2 stops36h 56m

Sydney Kingsford Smith

Tue 2/10

2:05 pm-4:14 pm

1 stop19h 09m

$1,103

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 5/2

4:05 pm-7:20 am

2 stops48h 15m

Sydney Kingsford Smith

Sat 5/16

9:20 am-3:16 pm

2 stops44h 56m

$1,112

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 2/6

6:00 pm-9:35 am

2 stops46h 35m

Sydney Kingsford Smith

Tue 2/10

11:20 am-8:58 pm

2 stops26h 38m

$1,120

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

2:33 pm-7:20 am

2 stops25h 47m

Sydney Kingsford Smith

Mon 5/18

9:20 am-3:16 pm

2 stops44h 56m

$1,134

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

1:30 pm-7:20 am

3 stops50h 50m

Sydney Kingsford Smith

Mon 5/18

9:20 am-3:16 pm

2 stops44h 56m

$1,139

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 1/28

5:12 pm-6:55 am

1 stop20h 43m

Sydney Kingsford Smith

Wed 2/4

5:45 pm-11:59 pm

1 stop23h 14m

$1,147

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 40 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.

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 fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 11% versus a flight in the morning.

What is the cheapest day to fly from St. Louis to Australia?

Travelers seeking maximum savings on their St. Louis to Australia flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

8.1

Very good

210 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

8.1

Very good

210 reviews

Fiji Airways

8.1

Very good

210 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

947 reviews

Fiji Airways

8.1

Very good

210 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

9,092 reviews

Fiji Airways

8.1

Very good

210 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

11,048 reviews

Fiji Airways

8.1

Very good

210 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

10,515 reviews

Fiji Airways

8.1

Very good

210 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 32h 25m. Airlines will cover a distance of 9479 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$1,374	FlexibilityNo cancel fee	On-time74%
United Airlines	Cheapest$1,027	Average$1,497	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$1,118	Average$1,462	FlexibilityNo cancel fee	On-time71%
Fiji Airways	Cheapest$1,132	Average$1,296	FlexibilityNo cancel fee	On-time74%

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$670+ 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 3/2. 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 9, 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 9, 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 9, 2025.

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

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

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

Find hourly flight availability from St. Louis to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 9, 2025.

What is the cheapest day to fly from St. Louis to Australia?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Australia. Price data was last updated on December 16, 2024.

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

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 9, 2025.