$818+ Cheap flights from Australia to St. Louis (STL)
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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
Oct 16 — Oct 231
Round-trip
1 adult, Economy
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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
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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 Australia to St. Louis
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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 September 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 September 16, 2026.
This lol.travel deal was found by Cheapflights users on 9/11. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:20 am -
2 stops45h 03m
Mon 11/24:05 pm -
2 stops48h 30m
Deal found 9/11![Air Canada logo]()
$1,020
This Ovago deal was found by Cheapflights users on 9/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:45 pm -
2 stops26h 47m
Mon 11/27:06 pm -
1 stop40h 54m
Deal found 9/11![Qantas Airways logo]()
$1,077
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 10/2610:45 pm -
2 stops26h 33m
Mon 11/22:54 pm -
2 stops26h 41m
Deal found 9/11![American Airlines logo]()
$1,089
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Sun 11/1511:20 am -
2 stops45h 06m
Sun 11/294:05 pm -
2 stops48h 30m
Deal found 9/13![Air Canada logo]()
$1,096
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 10/2611:10 am -
1 stop28h 36m
Mon 11/22:54 pm -
2 stops25h 06m
Deal found 9/11![American Airlines logo]()
$1,120
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Wed 10/2110:20 am -
2 stops29h 24m
Sat 10/248:55 am -
2 stops31h 40m
Deal found 9/13![Air Canada logo]()
$1,125
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 10/109:45 am -
2 stops24h 35m
Sat 10/172:31 pm -
2 stops24h 14m
Deal found 9/11![American Airlines logo]()
$1,130
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:10 am -
1 stop29h 36m
Sat 10/247:10 pm -
2 stops24h 35m
Deal found 9/13![American Airlines logo]()
$1,133
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:20 am -
2 stops41h 42m
Fri 10/304:39 pm -
2 stops23h 56m
Deal found 9/11![Air Canada logo]()
$1,147
This Air Canada deal was found by Cheapflights users on 9/11. 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.
Mon 10/266:30 am -
3 stops48h 53m
Mon 11/24:05 pm -
3 stops53h 30m
Deal found 9/11![Air Canada logo]()
$1,232
This BYOjet deal was found by Cheapflights users on 9/11. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:00 am -
3 stops29h 20m
Sat 10/172:40 pm -
3 stops29h 55m
Deal found 9/11![Multiple Airlines logo]()
$1,286
This Delta deal was found by Cheapflights users on 9/15. 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.
Tue 10/1311:00 am -
2 stops29h 44m
Tue 10/207:00 pm -
2 stops45h 50m
Deal found 9/15![Delta logo]()
$1,383
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 September 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 September 16, 2026.
This Air Canada deal was found by Cheapflights users on 9/11. 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.
Wed 10/2110:20 am -
2 stops29h 24m
Sat 10/248:00 am -
3 stops32h 35m
Deal found 9/11![Air Canada logo]()
$1,147
This American Airlines deal was found by Cheapflights users on 9/12. 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 1/202:05 pm -
1 stop19h 23m
Sat 2/136:30 am -
1 stop33h 30m
Deal found 9/12![American Airlines logo]()
$1,155
This Expedia deal was found by Cheapflights users on 9/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2011:20 am -
1 stop29h 13m
Sat 2/137:01 pm -
1 stop42h 54m
Deal found 9/12![Qantas Airways logo]()
$1,188
This Qantas Airways deal was found by Cheapflights users on 9/12. 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 1/202:05 pm -
1 stop19h 23m
Sat 2/132:54 pm -
2 stops25h 06m
Deal found 9/12![Multiple Airlines logo]()
$1,224
This Delta deal was found by Cheapflights users on 9/12. 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 12/910:40 am -
2 stops29h 46m
Sat 1/211:15 am -
2 stops28h 15m
Deal found 9/12![Delta logo]()
$1,561
This Qatar Airways deal was found by Cheapflights users on 9/15. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/511:40 pm -
2 stops35h 49m
Tue 2/91:40 pm -
2 stops35h 10m
Deal found 9/15![Qatar Airways logo]()
$1,723
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Fri 2/511:30 am -
2 stops21h 56m
Tue 2/91:09 pm -
3 stops28h 21m
Deal found 9/14![United Airlines logo]()
$1,963
This Turkish Airlines deal was found by Cheapflights users on 9/15. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/510:35 pm -
3 stops40h 12m
Tue 2/91:09 pm -
3 stops62h 36m
Deal found 9/15![Turkish Airlines logo]()
$2,134
This oojo deal was found by Cheapflights users on 9/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:45 pm -
1 stop41h 01m
Mon 11/27:06 pm -
1 stop40h 54m
Deal found 9/11![Qantas Airways logo]()
$1,249
This Aunt Betty deal was found by Cheapflights users on 9/11. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:20 am -
3 stops29h 04m
Mon 11/210:53 am -
3 stops29h 42m
Deal found 9/11![Air Canada logo]()
$1,632
This Qatar Airways deal was found by Cheapflights users on 9/14. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:50 pm -
2 stops38h 40m
Sat 10/246:02 am -
2 stops45h 18m
Deal found 9/14![Qatar Airways logo]()
$1,811
This Air New Zealand deal was found by Cheapflights users on 9/15. 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 Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:10 pm -
2 stops26h 20m
Tue 10/201:36 pm -
3 stops29h 19m
Deal found 9/15![Multiple Airlines logo]()
$1,947
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 12/1711:30 am -
2 stops40h 12m
Fri 1/89:22 am -
2 stops32h 08m
Deal found 9/15![United Airlines logo]()
$1,987
This Delta deal was found by Cheapflights users on 9/12. 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 12/1610:10 am -
2 stops30h 16m
Wed 1/67:30 am -
2 stops31h 30m
Deal found 9/12![Delta logo]()
$2,059
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1610:10 am -
2 stops30h 16m
Tue 1/57:30 am -
2 stops31h 30m
Deal found 9/11![Delta logo]()
$2,065
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/2111:20 am -
1 stop23h 23m
Sat 10/243:12 pm -
1 stop23h 48m
Deal found 9/14![United Airlines logo]()
$2,120
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1710:10 am -
2 stops31h 36m
Wed 1/62:15 pm -
2 stops24h 45m
Deal found 9/11![Delta logo]()
$2,065
This Qantas Airways deal was found by Cheapflights users on 9/15. 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.
Thu 11/56:30 am -
2 stops28h 46m
Mon 11/92:54 pm -
2 stops27h 31m
Deal found 9/15![Qantas Airways logo]()
$2,338
This Qantas Airways deal was found by Cheapflights users on 9/14. 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.
Sat 2/66:30 am -
2 stops58h 03m
Tue 2/912:50 pm -
2 stops27h 40m
Deal found 9/14![Qantas Airways logo]()
$2,456
Last-minute flights from Australia to St. LouisDiscover last-minute flight deals from Australia to St. Louis. Data last updated September 16, 2026 and is based on user searches.
Discover last-minute flight deals from Australia to St. Louis. Data last updated September 16, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:20 am -
2 stops41h 42m
Fri 10/304:39 pm -
2 stops23h 56m
Deal found 9/11![Air Canada logo]()
$1,147
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 10/109:45 am -
2 stops24h 35m
Sat 10/172:31 pm -
2 stops24h 14m
Deal found 9/11![American Airlines logo]()
$1,130
This BYOjet deal was found by Cheapflights users on 9/11. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:00 am -
3 stops29h 20m
Sat 10/172:40 pm -
3 stops29h 55m
Deal found 9/11![Multiple Airlines logo]()
$1,286
This Delta deal was found by Cheapflights users on 9/15. 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.
Tue 10/1311:00 am -
2 stops29h 44m
Tue 10/207:00 pm -
2 stops45h 50m
Deal found 9/15![Delta logo]()
$1,383
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Wed 10/2110:20 am -
2 stops29h 24m
Sat 10/248:55 am -
2 stops31h 40m
Deal found 9/13![Air Canada logo]()
$1,125
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:10 am -
1 stop29h 36m
Sat 10/247:10 pm -
2 stops24h 35m
Deal found 9/13![American Airlines logo]()
$1,133
This lol.travel deal was found by Cheapflights users on 9/11. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:20 am -
2 stops45h 03m
Mon 11/24:05 pm -
2 stops48h 30m
Deal found 9/11![Air Canada logo]()
$1,020
This Ovago deal was found by Cheapflights users on 9/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:45 pm -
2 stops26h 47m
Mon 11/27:06 pm -
1 stop40h 54m
Deal found 9/11![Qantas Airways logo]()
$1,077
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 10/2610:45 pm -
2 stops26h 33m
Mon 11/22:54 pm -
2 stops26h 41m
Deal found 9/11![American Airlines logo]()
$1,089
This Bravofly deal was found by Cheapflights users on 9/11. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:10 am -
1 stop28h 36m
Mon 11/28:10 am -
1 stop31h 50m
Deal found 9/11![Qantas Airways logo]()
$1,119
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 10/2611:10 am -
1 stop28h 36m
Mon 11/22:54 pm -
2 stops25h 06m
Deal found 9/11![American Airlines logo]()
$1,120
This Air Canada deal was found by Cheapflights users on 9/11. 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.
Mon 10/266:30 am -
3 stops48h 53m
Mon 11/24:05 pm -
3 stops53h 30m
Deal found 9/11![Air Canada logo]()
$1,232
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 September 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 September 16, 2026.
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 11/210:10 am -
2 stops27h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Delta logo]()
$818
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 11/212:45 pm -
1 stop22h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![United Airlines logo]()
$819
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/57:20 am -
2 stops44h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Japan Airlines logo]()
$1,461
This KAYAK deal was found by Cheapflights users on 9/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/59:55 pm -
2 stops31h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$1,512
This BusinessClass deal was found by Cheapflights users on 9/13. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/510:45 pm -
1 stop41h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Qantas Airways logo]()
$1,740
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 September 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,020 (lol.travel) |
One-way from | $818 (Delta) |
Popular in | April |
Cheapest in | September |
Average price | $1,039 |
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 7,457,451 searches. Data last updated September 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
MelbourneSt. Louis
MEL Melbourne - STL Lambert-St Louis
MELSTL
Melbourne
Mon 11/2
10:10 am-9:09 pm
2 stops27h 59m
Lambert-St Louis
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$818
Quickest round-trip
MelbourneSt. Louis
MEL Melbourne - STL Lambert-St Louis
MELSTL
Melbourne
Mon 11/2
12:45 pm-6:05 pm
1 stop22h 20m
Lambert-St Louis
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$819
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 10/21
10:20 am-11:44 pm
2 stops29h 24m
Lambert-St Louis
Sat 10/24
8:00 am-8:35 am
3 stops32h 35m
$1,147
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 1/20
2:05 pm-4:28 pm
1 stop19h 23m
Lambert-St Louis
Sat 2/13
6:30 am-9:00 am
1 stop33h 30m
$1,155
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 1/20
11:20 am-11:33 pm
1 stop29h 13m
Lambert-St Louis
Sat 2/13
7:01 pm-6:55 am
1 stop42h 54m
$1,188
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 1/20
2:05 pm-4:28 pm
1 stop19h 23m
Lambert-St Louis
Sat 2/13
2:54 pm-9:00 am
2 stops25h 06m
$1,224
MelbourneSt. Louis
MEL Melbourne - STL Lambert-St Louis
MELSTL
Melbourne
Mon 10/26
10:45 pm-11:46 pm
1 stop41h 01m
Lambert-St Louis
Mon 11/2
7:06 pm-5:00 am
1 stop40h 54m
$1,249
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 12/9
10:40 am-11:26 pm
2 stops29h 46m
Lambert-St Louis
Sat 1/2
11:15 am-8:30 am
2 stops28h 15m
$1,561
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Mon 10/26
10:20 am-11:24 pm
3 stops29h 04m
Lambert-St Louis
Mon 11/2
10:53 am-9:35 am
3 stops29h 42m
$1,632
MelbourneSt. Louis
MEL Melbourne - STL Lambert-St Louis
MELSTL
Melbourne
Fri 2/5
11:40 pm-6:29 pm
2 stops35h 49m
Lambert-St Louis
Tue 2/9
1:40 pm-5:50 pm
2 stops35h 10m
$1,723
Showing 1-10 of 21 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.
MEL-STL
SYD-STL
LST-STL
DPO-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
MEL-STL
SYD-STL
LST-STL
DPO-STL
What is the cheapest month to book a flight from Australia to St. Louis?
Currently, June is the cheapest month in which you can book a flight from Australia to St. Louis (average of $868). Flying from Australia to St. Louis in April is currently the most expensive (average of $1,627). 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 September 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.
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Edwardsville
Glencoe
Chesterfield
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St. Louis flight routes
Alternative routes for Australia to St. Louis
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Complete your trip
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Search flights from Australia to St. Louis by cabin class
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Australia and St. Louis flights
Browse other Australia and St. Louis flight options. Last updated on September 16, 2026.
Popular flight searches
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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 September 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 7,457,451 searches. Data last updated September 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,238 | Average$1,483 | FlexibilityNo cancel fee | On-time69% |