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$563+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from St. Louis to Australia

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Australia (AU0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$940
(American Airlines)

One-way from

$563
(Fiji Airways)
From Lambert-St Louis to Australia
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One-way flight from Lambert-St Louis to Australia
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Find 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 January 21, 2025.

This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/59:15 amSTL - BNE
1 stop29h 00mAmerican Airlines
Wed 3/128:05 amBNE - STL
1 stop26h 24mAmerican Airlines
Deal found 1/20$940
This United deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/101:05 pmSTL - BNE
2 stops26h 25mUnited Airlines
Sat 3/2210:40 amBNE - STL
1 stop22h 10mUnited Airlines
Deal found 1/21$1,026
This Jetabroad deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:55 pmSTL - SYD
2 stops31h 40mMultiple Airlines
Sun 11/165:25 pmSYD - STL
2 stops23h 31mMultiple Airlines
Deal found 1/20$1,052
This Gotogate deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/271:27 pmSTL - SYD
2 stops38h 48mANA
Wed 9/2411:50 amSYD - STL
2 stops43h 45mANA
Deal found 1/20$1,157
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/115:37 pmSTL - MEL
2 stops32h 23mMultiple Airlines
Thu 3/276:15 amMEL - STL
2 stops29h 10mMultiple Airlines
Deal found 1/20$1,170
This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/171:30 pmSTL - SYD
2 stops50h 50mAir Canada
Tue 7/19:20 amSYD - STL
2 stops44h 56mAir Canada
Deal found 1/20$1,229
This Fiji Airways deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/115:37 pmSTL - MEL
2 stops26h 38mFiji Airways
Thu 3/271:45 pmMEL - STL
2 stops21h 44mFiji Airways
Deal found 1/20$1,242
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/203:48 pmSTL - SYD
2 stops25h 12mAmerican Airlines
Fri 3/2811:15 amSYD - STL
2 stops24h 14mAmerican Airlines
Deal found 1/21$1,244
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/199:00 amSTL - MEL
1 stop32h 00mUnited Airlines
Wed 2/261:00 pmMEL - STL
1 stop22h 56mUnited Airlines
Deal found 1/20$1,259
This Kissandfly.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/121:05 pmSTL - MEL
2 stops27h 25mLufthansa
Thu 3/2010:30 amMEL - STL
2 stops22h 04mLufthansa
Deal found 1/20$1,266
This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/283:50 pmSTL - BNE
3 stops52h 15mMultiple Airlines
Mon 4/1410:00 amBNE - STL
2 stops43h 59mMultiple Airlines
Deal found 1/20$1,316
This KAYAK deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/115:57 pmSTL - BNE
2 stops24h 13mFiji Airways
Sun 11/2311:20 amBNE - STL
2 stops28h 37mFiji Airways
Deal found 1/21$1,322

Find flights from St. Louis to Australia within your budget

Customize your flight search to find flights from St. Louis to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Wed 3/5

9:15 am-6:15 am

1 stop29h 00m

Brisbane

Wed 3/12

8:05 am-7:29 pm

1 stop26h 24m

$940

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 3/10

1:05 pm-6:30 am

2 stops26h 25m

Brisbane

Sat 3/22

10:40 am-5:50 pm

1 stop22h 10m

$1,026

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 2/20

11:25 am-1:00 pm

2 stops32h 35m

Sydney Kingsford Smith

Thu 3/20

2:00 pm-7:29 pm

2 stops21h 29m

$1,148

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 3/11

5:37 pm-6:00 pm

2 stops32h 23m

Melbourne

Thu 3/27

6:15 am-7:25 pm

2 stops29h 10m

$1,170

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 6/17

1:30 pm-7:20 am

2 stops50h 50m

Sydney Kingsford Smith

Tue 7/1

9:20 am-3:16 pm

2 stops44h 56m

$1,229

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 3/11

5:37 pm-12:15 pm

2 stops26h 38m

Melbourne

Thu 3/27

1:45 pm-7:29 pm

2 stops21h 44m

$1,242

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 3/20

3:48 pm-9:00 am

2 stops25h 12m

Sydney Kingsford Smith

Fri 3/28

11:15 am-7:29 pm

2 stops24h 14m

$1,244

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Wed 2/19

9:00 am-10:00 am

1 stop32h 00m

Melbourne

Wed 2/26

1:00 pm-6:56 pm

1 stop22h 56m

$1,259

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Wed 3/12

1:05 pm-8:30 am

2 stops27h 25m

Melbourne

Thu 3/20

10:30 am-4:34 pm

2 stops22h 04m

$1,266

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Fri 3/28

3:50 pm-11:05 am

3 stops52h 15m

Brisbane

Mon 4/14

10:00 am-2:59 pm

2 stops43h 59m

$1,316

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 38 results
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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.

Travel insights for flights from St. Louis to Australia

Get recent, data-driven insights about flights from St. Louis to Australia including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from St. Louis to Australia (average of $1,051). Flying from St. Louis to Australia in December is currently the most expensive (average of $1,643). 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?

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 January 21, 2025.

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.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals by month.

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.

Temperature in Australia by month

Plan your trip to Australia by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated January 21, 2025.
Get a feel of what it's like to fly with Air New Zealand, Cathay Pacific and Air Canada from St. Louis to Australia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
852 reviews

Comfort

8.2

Food

7.7

Boarding

8.6

Overall

8.4

Entertainment

7.9

Crew

8.7

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

ANA
8.4
Very good
852 reviews
ANA
8.4
Very good
852 reviews

Comfort

8.2

Food

7.7

Boarding

8.6

Overall

8.4

Entertainment

7.9

Crew

8.7

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Emirates
8.1
Very good
3,358 reviews
ANA
8.4
Very good
852 reviews

Comfort

8.2

Food

7.7

Boarding

8.6

Overall

8.4

Entertainment

7.9

Crew

8.7

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Fiji Airways
8.1
Very good
188 reviews
ANA
8.4
Very good
852 reviews

Comfort

8.2

Food

7.7

Boarding

8.6

Overall

8.4

Entertainment

7.9

Crew

8.7

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Air New Zealand
7.9
Good
483 reviews
ANA
8.4
Very good
852 reviews

Comfort

8.2

Food

7.7

Boarding

8.6

Overall

8.4

Entertainment

7.9

Crew

8.7

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Qatar Airways
7.5
Good
3,754 reviews
ANA
8.4
Very good
852 reviews

Comfort

8.2

Food

7.7

Boarding

8.6

Overall

8.4

Entertainment

7.9

Crew

8.7

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

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.

  • 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.

  • What are the cheapest airlines to fly from St. Louis to Australia one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $864. Qatar Airways flights start at $884 while deals on United Airlines start at $932 one-way.

  • 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, February is the cheapest month in which you can book a flight from St. Louis to Australia (average of $1,051). Flying from St. Louis to Australia in December is currently the most expensive (average of $1,643). 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 St. Louis to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from St. Louis to Australia

Discover the top 7 airlines that operate flights from St. Louis to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$687Average$1,963FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$924Average$1,601FlexibilityNo cancel feeOn-time69%
DeltaCheapest$942Average$1,551FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$962Average$1,297FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,134Average$1,624FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$1,322Average$1,789FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,559Average$1,715FlexibilityNo cancel feeOn-time68%
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