$1,043+ Cheap flights from St. Louis (STL) to Australia
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Feb 26 — Mar 51
1 adult, Economy
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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
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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 St. Louis to Australia
Keep the following information in mind while searching for St. Louis to Australia flight deals. Data was last updated February 21, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,043 (United) |
Popular in | December |
Cheapest in | November |
Average price | $1,427 |
Find 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 February 21, 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 February 21, 2025.
This United deal was found by Cheapflights users on 2/19. 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.
Fri 3/281:45 pmSTL - BNE
2 stops49h 45mUnited Airlines
Mon 4/1410:45 amBNE - STL
2 stops38h 11mUnited Airlines
Deal found 2/19![United Airlines logo]()
$1,043
This oojo deal was found by Cheapflights users on 2/19. 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.
Sat 5/107:05 pmSTL - SYD
2 stops25h 40mFiji Airways
Sat 5/311:45 pmSYD - STL
2 stops24h 02mFiji Airways
Deal found 2/19![Fiji Airways logo]()
$1,148
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/144:50 pmSTL - SYD
2 stops26h 45mAir New Zealand
Wed 5/289:55 amSYD - STL
2 stops25h 54mAir New Zealand
Deal found 2/20![Air New Zealand logo]()
$1,171
This Air Canada deal was found by Cheapflights users on 2/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/231:30 pmSTL - SYD
2 stops26h 50mAir Canada
Mon 9/19:20 amSYD - STL
2 stops25h 40mAir Canada
Deal found 2/21![Air Canada logo]()
$1,235
This Air New Zealand deal was found by Cheapflights users on 2/20. 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 New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/141:41 pmSTL - SYD
3 stops29h 54mMultiple Airlines
Wed 5/2811:50 amSYD - STL
3 stops27h 09mMultiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$1,286
This Justfly.com deal was found by Cheapflights users on 2/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/215:37 pmSTL - SYD
2 stops44h 58mQantas Airways
Fri 2/2811:15 amSYD - STL
1 stop28h 53mQantas Airways
Deal found 2/20![Qantas Airways logo]()
$1,343
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Fri 2/213:43 pmSTL - SYD
2 stops24h 17mAmerican Airlines
Fri 2/2811:15 amSYD - STL
2 stops22h 18mAmerican Airlines
Deal found 2/20![American Airlines logo]()
$1,346
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 3/26:15 amSTL - SYD
1 stop31h 45mUnited Airlines
Mon 3/1011:50 amSYD - STL
1 stop19h 26mUnited Airlines
Deal found 2/19![United Airlines logo]()
$1,357
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/211:50 amSTL - SYD
2 stops27h 45mDelta
Mon 3/101:15 pmSYD - STL
2 stops21h 18mDelta
Deal found 2/19![Delta logo]()
$1,371
This Air Canada deal was found by Cheapflights users on 2/20. 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.
Sat 11/224:15 pmSTL - BNE
2 stops48h 25mAir Canada
Fri 12/2610:45 amBNE - STL
2 stops44h 41mAir Canada
Deal found 2/20![Air Canada logo]()
$1,380
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:30 amSTL - MEL
2 stops35h 20mAir New Zealand
Thu 5/158:35 amMEL - STL
2 stops28h 28mAir New Zealand
Deal found 2/20![Air New Zealand logo]()
$1,393
This KAYAK deal was found by Cheapflights users on 2/19. 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 12/165:55 pmSTL - BNE
2 stops24h 15mFiji Airways
Tue 12/2311:35 amBNE - STL
2 stops26h 46mFiji Airways
Deal found 2/19![Fiji Airways logo]()
$1,444
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 February 21, 2025.
Fly from
St. Louis
Fly to
Australia
Route
Depart
Return
Price
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Fri 3/28
1:45 pm-6:30 am
2 stops49h 45m
Brisbane
Mon 4/14
10:45 am-9:56 am
2 stops38h 11m
$1,043
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Sat 5/10
7:05 pm-11:45 am
2 stops25h 40m
Sydney Kingsford Smith
Sat 5/31
1:45 pm-10:47 pm
2 stops24h 02m
$1,148
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Wed 5/14
4:50 pm-10:35 am
2 stops26h 45m
Sydney Kingsford Smith
Wed 5/28
9:55 am-8:49 pm
2 stops25h 54m
$1,171
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Sat 4/5
3:30 pm-7:20 am
2 stops48h 50m
Sydney Kingsford Smith
Sat 4/19
9:20 am-2:49 pm
2 stops44h 29m
$1,248
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Wed 5/14
1:41 pm-10:35 am
3 stops29h 54m
Sydney Kingsford Smith
Wed 5/28
11:50 am-11:59 pm
3 stops27h 09m
$1,286
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 3/10
3:48 pm-9:00 am
2 stops25h 12m
Sydney Kingsford Smith
Fri 3/21
11:15 am-5:59 pm
2 stops22h 44m
$1,346
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Tue 3/4
10:55 am-7:00 am
1 stop27h 05m
Sydney Kingsford Smith
Tue 3/11
11:50 am-3:16 pm
1 stop19h 26m
$1,357
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Sat 5/3
8:30 am-10:50 am
2 stops35h 20m
Melbourne
Thu 5/15
8:35 am-10:03 pm
2 stops28h 28m
$1,393
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Wed 3/12
6:15 am-10:55 pm
2 stops48h 40m
Melbourne
Thu 3/20
1:45 pm-7:30 pm
2 stops21h 45m
$1,459
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Sat 5/3
4:45 pm-8:15 am
2 stops48h 30m
Melbourne
Thu 5/15
10:55 am-5:09 pm
1 stop21h 14m
$1,512
Showing 1-10 of 27 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.
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 February 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 February 21, 2025.
Get a feel of what it's like to fly with ANA, Emirates and Fiji Airways 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.
Entertainment
7.9
Boarding
8.5
Overall
8.4
Comfort
8.2
Food
7.6
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2025
MNL - HND
Entertainment
7.9
Boarding
8.5
Overall
8.4
Comfort
8.2
Food
7.6
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2025
MNL - HND
Entertainment
7.9
Boarding
8.5
Overall
8.4
Comfort
8.2
Food
7.6
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2025
MNL - HND
Entertainment
7.9
Boarding
8.5
Overall
8.4
Comfort
8.2
Food
7.6
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2025
MNL - HND
Entertainment
7.9
Boarding
8.5
Overall
8.4
Comfort
8.2
Food
7.6
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2025
MNL - HND
Entertainment
7.9
Boarding
8.5
Overall
8.4
Comfort
8.2
Food
7.6
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2025
MNL - HND
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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Alternative routes for St. Louis to Australia
See prices for flight routes from nearby airports that may be better suited for you.
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 February 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$687 | Average$2,014 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$924 | Average$1,610 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$942 | Average$1,468 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$962 | Average$1,297 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,164 | Average$1,634 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,322 | Average$1,797 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$1,450 | Average$1,715 | FlexibilityNo cancel fee | On-time68% |