$589+ 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 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
Jul 16 — Jul 231
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Best
Last-minute
One-way
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 June 16, 2026.
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 June 16, 2026.
This American Airlines deal was found by Cheapflights users on 6/14. 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 8/289:10 am
SYD
- STL
2 stops47h 27m
American Airlines
Mon 9/75:42 am
STL
- SYD
1 stop34h 13m
American Airlines
Deal found 6/14![American Airlines logo]()
$983
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/269:10 am
SYD
- STL
1 stop28h 49m
American Airlines
Tue 9/86:36 am
STL
- SYD
2 stops33h 29m
American Airlines
Deal found 6/12![American Airlines logo]()
$999
This American Airlines deal was found by Cheapflights users on 6/14. 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 8/269:10 am
SYD
- STL
1 stop28h 49m
American Airlines
Mon 9/73:32 pm
STL
- SYD
2 stops24h 33m
American Airlines
Deal found 6/14![American Airlines logo]()
$1,000
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/269:10 am
SYD
- STL
1 stop28h 49m
American Airlines
Sun 9/66:45 pm
STL
- SYD
1 stop21h 10m
American Airlines
Deal found 6/12![American Airlines logo]()
$1,007
This American Airlines deal was found by Cheapflights users on 6/14. 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 8/2612:00 pm
SYD
- STL
1 stop19h 41m
American Airlines
Wed 9/96:30 am
STL
- SYD
1 stop33h 35m
American Airlines
Deal found 6/14![American Airlines logo]()
$1,008
This American Airlines deal was found by Cheapflights users on 6/14. 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 8/275:50 pm
SYD
- STL
1 stop20h 09m
American Airlines
Mon 9/76:36 am
STL
- SYD
1 stop33h 19m
American Airlines
Deal found 6/14![American Airlines logo]()
$1,015
This United Airlines deal was found by Cheapflights users on 6/14. 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 8/2610:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Mon 9/712:59 pm
STL
- SYD
2 stops27h 01m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,018
This Qantas Airways deal was found by Cheapflights users on 6/12. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:10 am
SYD
- STL
1 stop28h 49m
Qantas Airways
Wed 9/96:30 am
STL
- SYD
1 stop33h 35m
Qantas Airways
Deal found 6/12![Qantas Airways logo]()
$1,045
This Aunt Betty deal was found by Cheapflights users on 6/14. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:50 pm
SYD
- STL
1 stop20h 09m
Qantas Airways
Sun 9/66:45 pm
STL
- SYD
1 stop21h 10m
Qantas Airways
Deal found 6/14![Qantas Airways logo]()
$1,046
This Qantas Airways deal was found by Cheapflights users on 6/14. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:10 am
SYD
- STL
1 stop28h 49m
Qantas Airways
Mon 9/76:00 am
STL
- SYD
1 stop34h 30m
Qantas Airways
Deal found 6/14![Qantas Airways logo]()
$1,047
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/269:10 am
SYD
- STL
1 stop28h 49m
American Airlines
Thu 9/36:00 am
STL
- SYD
1 stop34h 05m
American Airlines
Deal found 6/12![American Airlines logo]()
$1,048
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 9/79:45 am
MEL
- STL
1 stop28h 14m
American Airlines
Sun 9/276:00 am
STL
- MEL
1 stop33h 45m
American Airlines
Deal found 6/12![American Airlines logo]()
$1,247
Best flights from Australia to St. LouisDiscover 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 June 16, 2026.
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 June 16, 2026.
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Thu 8/2710:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Sun 9/63:13 pm
STL
- SYD
2 stops24h 42m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,018
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Thu 7/309:20 am
SYD
- STL
2 stops48h 22m
Air Canada
Mon 8/312:10 pm
STL
- SYD
2 stops52h 10m
Air Canada
Deal found 6/12![Air Canada logo]()
$1,067
This Delta deal was found by Cheapflights users on 6/12. 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.
Wed 8/269:15 am
SYD
- STL
2 stops22h 29m
Delta
Thu 9/33:50 pm
STL
- SYD
2 stops24h 00m
Delta
Deal found 6/12![Delta logo]()
$1,099
This American Airlines deal was found by Cheapflights users on 6/11. 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 8/75:50 pm
SYD
- STL
1 stop20h 09m
American Airlines
Tue 8/111:25 pm
STL
- SYD
2 stops26h 40m
American Airlines
Deal found 6/11![American Airlines logo]()
$1,226
This Qantas Airways deal was found by Cheapflights users on 6/14. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/73:40 pm
LST
- STL
2 stops39h 34m
Qantas Airways
Tue 8/116:00 am
STL
- LST
2 stops43h 35m
Qantas Airways
Deal found 6/14![Qantas Airways logo]()
$1,402
This Qantas Airways deal was found by Cheapflights users on 6/15. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/72:05 pm
MEL
- STL
2 stops23h 54m
Multiple Airlines
Sun 9/275:11 pm
STL
- MEL
3 stops27h 29m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,801
This Air Canada deal was found by Cheapflights users on 6/11. 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 8/79:20 am
SYD
- STL
2 stops26h 02m
Air Canada
Tue 8/118:55 am
STL
- SYD
2 stops31h 25m
Air Canada
Deal found 6/11![Air Canada logo]()
$1,187
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 7/3010:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Mon 8/37:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 6/12![United Airlines logo]()
$1,201
This American Airlines deal was found by Cheapflights users on 6/14. 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.
Mon 9/79:45 am
MEL
- STL
2 stops37h 38m
American Airlines
Sun 9/272:27 pm
STL
- MEL
2 stops25h 18m
American Airlines
Deal found 6/14![American Airlines logo]()
$1,254
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 8/69:30 am
SYD
- STL
2 stops23h 12m
United Airlines
Mon 8/104:48 pm
STL
- SYD
2 stops23h 07m
United Airlines
Deal found 6/12![United Airlines logo]()
$1,207
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 9/19:30 am
SYD
- STL
2 stops26h 16m
United Airlines
Sat 9/54:40 pm
STL
- SYD
2 stops23h 20m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,244
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 9/710:55 am
MEL
- STL
2 stops40h 02m
United Airlines
Sun 9/276:15 am
STL
- MEL
2 stops35h 00m
United Airlines
Deal found 6/11![United Airlines logo]()
$1,258
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/810:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Mon 7/207:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,384
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/1210:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Sat 7/185:10 am
STL
- MEL
2 stops60h 05m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,456
Last-minute flights from Australia to St. LouisDiscover last-minute flight deals from Australia to St. Louis. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from Australia to St. Louis. Data last updated June 16, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/15. 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 7/89:10 am
SYD
- STL
1 stop29h 49m
American Airlines
Mon 7/206:37 am
STL
- SYD
1 stop33h 28m
American Airlines
Deal found 6/15![American Airlines logo]()
$1,142
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/89:30 am
SYD
- STL
2 stops28h 15m
United Airlines
Mon 7/201:38 pm
STL
- SYD
2 stops26h 17m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,384
This Air Canada deal was found by Cheapflights users on 6/14. 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.
Wed 7/89:20 am
SYD
- STL
2 stops23h 57m
Multiple Airlines
Mon 7/2012:10 pm
STL
- SYD
3 stops52h 10m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$2,397
This Air Canada deal was found by Cheapflights users on 6/14. 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.
Wed 7/89:20 am
SYD
- STL
3 stops48h 22m
Air Canada
Mon 7/2012:10 pm
STL
- SYD
3 stops52h 10m
Air Canada
Deal found 6/14![Air Canada logo]()
$2,441
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/129:30 am
MEL
- STL
2 stops29h 27m
United Airlines
Sat 7/185:10 am
STL
- MEL
2 stops60h 05m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,456
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/129:30 am
SYD
- STL
2 stops22h 03m
United Airlines
Sat 7/184:45 pm
STL
- SYD
2 stops47h 15m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,572
This Gotogate deal was found by Cheapflights users on 6/15. 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.
Sun 7/128:45 pm
MEL
- STL
3 stops38h 37m
Multiple Airlines
Sat 7/181:20 pm
STL
- MEL
2 stops41h 45m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$2,595
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Thu 7/309:20 am
SYD
- STL
2 stops48h 22m
Air Canada
Mon 8/312:10 pm
STL
- SYD
2 stops52h 10m
Air Canada
Deal found 6/12![Air Canada logo]()
$1,067
This American Airlines deal was found by Cheapflights users on 6/12. 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 7/309:10 am
SYD
- STL
1 stop29h 49m
American Airlines
Mon 8/31:14 pm
STL
- SYD
2 stops26h 51m
American Airlines
Deal found 6/12![American Airlines logo]()
$1,183
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 7/3010:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Mon 8/37:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 6/12![United Airlines logo]()
$1,201
One-way flights from Australia to St. LouisSearch for one-way flight options from Australia to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
Search for one-way flight options from Australia to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 6/2610:55 am
MEL
- STL
2 stops38h 12m
United Airlines
Deal found 6/11![United Airlines logo]()
$589
This SmartFares deal was found by Cheapflights users on 6/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:15 am
SYD
- STL
2 stops24h 40m
Delta
Deal found 6/15![Delta logo]()
$593
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Sat 6/2710:55 am
MEL
- STL
2 stops52h 02m
United Airlines
Deal found 6/15![United Airlines logo]()
$618
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 6/2310:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/11![United Airlines logo]()
$626
This Delta deal was found by Cheapflights users on 6/15. 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.
Thu 7/309:15 am
SYD
- STL
2 stops38h 31m
Delta
Deal found 6/15![Delta logo]()
$629
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 7/3010:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/12![United Airlines logo]()
$631
This Air Canada deal was found by Cheapflights users on 6/13. 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.
Thu 7/309:20 am
SYD
- STL
3 stops48h 22m
Air Canada
Deal found 6/13![Air Canada logo]()
$684
This SmartFares deal was found by Cheapflights users on 6/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:00 pm
SYD
- STL
1 stop21h 05m
Qantas Airways
Deal found 6/15![Qantas Airways logo]()
$686
This United Airlines deal was found by Cheapflights users on 6/11. 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 6/2110:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/11![United Airlines logo]()
$689
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 6/2610:20 am
SYD
- STL
2 stops40h 51m
United Airlines
Deal found 6/11![United Airlines logo]()
$695
This KAYAK deal was found by Cheapflights users on 6/13. 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.
Mon 8/316:25 am
SYD
- STL
2 stops31h 34m
Qantas Airways
Deal found 6/13![Qantas Airways logo]()
$745
This oojo deal was found by Cheapflights users on 6/13. 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.
Fri 10/99:45 am
MEL
- STL
1 stop29h 20m
Qantas Airways
Deal found 6/13![Qantas Airways logo]()
$787
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 June 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $983 (American Airlines) |
One-way from | $589 (United Airlines) |
Popular in | July |
Cheapest in | September |
Average price | $1,450 |
Cheapflights Fare Finder
Customize your flight search to find flights from Australia to St. Louis 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 June 16, 2026.
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
Cheapest round-trip
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Thu 8/27
10:20 am-6:39 pm
1 stop23h 19m
Lambert-St Louis
Sun 9/6
3:13 pm-6:55 am
2 stops24h 42m
$1,018
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Thu 7/30
9:20 am-6:42 pm
2 stops48h 22m
Lambert-St Louis
Mon 8/3
12:10 pm-7:20 am
2 stops52h 10m
$1,067
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Wed 8/26
9:15 am-4:44 pm
2 stops22h 29m
Lambert-St Louis
Thu 9/3
3:50 pm-6:50 am
2 stops24h 00m
$1,099
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Fri 8/7
9:20 am-8:22 pm
2 stops26h 02m
Lambert-St Louis
Tue 8/11
8:55 am-7:20 am
2 stops31h 25m
$1,187
Quickest round-trip
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Thu 7/30
10:20 am-6:17 pm
1 stop22h 57m
Lambert-St Louis
Mon 8/3
7:23 pm-6:55 am
1 stop20h 32m
$1,201
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Thu 8/6
9:30 am-5:42 pm
2 stops23h 12m
Lambert-St Louis
Mon 8/10
4:48 pm-6:55 am
2 stops23h 07m
$1,207
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Fri 8/7
5:50 pm-10:59 pm
1 stop20h 09m
Lambert-St Louis
Tue 8/11
1:25 pm-7:05 am
2 stops26h 40m
$1,226
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Tue 9/1
9:30 am-8:46 pm
2 stops26h 16m
Lambert-St Louis
Sat 9/5
4:40 pm-7:00 am
2 stops23h 20m
$1,244
MelbourneSt. Louis
MEL - STL
MELSTL
Melbourne
Mon 9/7
9:45 am-8:23 am
2 stops37h 38m
Lambert-St Louis
Sun 9/27
2:27 pm-6:45 am
2 stops25h 18m
$1,254
MelbourneSt. Louis
MEL - STL
MELSTL
Melbourne
Mon 9/7
10:55 am-11:57 am
2 stops40h 02m
Lambert-St Louis
Sun 9/27
6:15 am-8:15 am
2 stops35h 00m
$1,258
Showing 1-10 of 24 resultsSorted by cheapest first
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.
SYD-STL
MEL-STL
LST-STL
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
AU0-STL
SYD-STL
MEL-STL
LST-STL
What is the cheapest month to book a flight from Australia to St. Louis?
Currently, April is the cheapest month in which you can book a flight from Australia to St. Louis (average of $707). Flying from Australia to St. Louis in July is currently the most expensive (average of $952). 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 St. Louis
Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated June 16, 2026.
Peruse reviews from past customers who have flown with 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.
Food
6.6
Crew
8.1
Comfort
7.3
Entertainment
7.1
Overall
7.4
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.6
Crew
8.1
Comfort
7.3
Entertainment
7.1
Overall
7.4
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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
Complete your trip
Flights by cabin class
Other flight options
Popular flights
St. Louis flight routes
Alternative routes for Australia to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Australia to St. Louis by cabin class
Find flights from Australia to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Australia and St. Louis flights
Browse other Australia and St. Louis flight options. Last updated on June 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 16, 2026.
Top airline flying from Australia to St. Louis
Discover the top airline that operate flights from Australia to St. Louis. 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 June 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$822 | Average$1,483 | FlexibilityNo cancel fee | On-time69% |