$635+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Aug 29 — Sep 51
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Australia with Cheapflights
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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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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 July 30, 2026.
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 July 30, 2026.
This oojo deal was found by Cheapflights users on 7/26. 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 11/132:54 pm
STL
- SYD
2 stops33h 46m
Qantas Airways
Thu 11/2611:20 am
SYD
- STL
1 stop29h 25m
Qantas Airways
Deal found 7/26![Qantas Airways logo]()
$1,079
This FlightHub deal was found by Cheapflights users on 7/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:10 pm
STL
- BNE
2 stops51h 55m
Air Canada
Mon 8/3110:00 am
BNE
- STL
2 stops41h 40m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,082
This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/251:08 pm
STL
- BNE
2 stops27h 37m
Air Canada
Wed 11/1810:45 am
BNE
- STL
2 stops44h 41m
Air Canada
Deal found 7/27![Air Canada logo]()
$1,104
This oojo deal was found by Cheapflights users on 7/27. 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 10/207:10 pm
STL
- MEL
1 stop41h 50m
Qantas Airways
Tue 11/312:00 pm
MEL
- STL
1 stop22h 54m
Qantas Airways
Deal found 7/27![Qantas Airways logo]()
$1,109
This Air Canada deal was found by Cheapflights users on 7/25. 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 9/812:10 pm
STL
- SYD
2 stops28h 10m
Air Canada
Wed 9/309:20 am
SYD
- STL
2 stops48h 21m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,111
This oojo deal was found by Cheapflights users on 7/26. 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 10/275:40 am
STL
- MEL
1 stop31h 20m
Qantas Airways
Wed 11/1110:45 pm
MEL
- STL
1 stop42h 00m
Qantas Airways
Deal found 7/26![Qantas Airways logo]()
$1,112
This Air Canada deal was found by Cheapflights users on 7/26. 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 10/1312:10 pm
STL
- SYD
2 stops28h 10m
Air Canada
Wed 11/1811:20 am
SYD
- STL
2 stops45h 06m
Air Canada
Deal found 7/26![Air Canada logo]()
$1,116
This Air Canada deal was found by Cheapflights users on 7/25. 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 9/712:10 pm
STL
- SYD
3 stops52h 10m
Air Canada
Sun 9/279:20 am
SYD
- STL
2 stops48h 21m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,119
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 10/2712:47 pm
STL
- MEL
2 stops28h 43m
American Airlines
Wed 11/1110:45 pm
MEL
- STL
2 stops26h 22m
American Airlines
Deal found 7/26![American Airlines logo]()
$1,122
This Air Canada deal was found by Cheapflights users on 7/26. 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 9/712:10 pm
STL
- SYD
3 stops52h 10m
Air Canada
Mon 9/149:20 am
SYD
- STL
2 stops43h 40m
Air Canada
Deal found 7/26![Air Canada logo]()
$1,124
This Air Canada deal was found by Cheapflights users on 7/26. 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 10/274:05 pm
STL
- AVV
3 stops63h 10m
Multiple Airlines
Wed 11/116:00 am
AVV
- STL
3 stops50h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$1,130
This Justfly.com deal was found by Cheapflights users on 7/27. 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.
Wed 9/238:55 am
STL
- SYD
2 stops31h 25m
Air Canada
Wed 10/710:20 am
SYD
- STL
1 stop25h 40m
Air Canada
Deal found 7/27![Air Canada logo]()
$1,131
Best flights from St. Louis to AustraliaDiscover carefully curated flight deals from St. Louis to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2026.
Discover carefully curated flight deals from St. Louis to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2026.
This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/251:08 pm
STL
- BNE
2 stops27h 37m
Air Canada
Wed 11/1810:45 am
BNE
- STL
2 stops44h 41m
Air Canada
Deal found 7/27![Air Canada logo]()
$1,104
This Air Canada deal was found by Cheapflights users on 7/26. 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 10/274:05 pm
STL
- AVV
3 stops63h 10m
Multiple Airlines
Wed 11/116:00 am
AVV
- STL
3 stops50h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$1,130
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/93:32 pm
STL
- BNE
2 stops23h 58m
United Airlines
Wed 9/1610:30 am
BNE
- STL
1 stop23h 08m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,140
This Delta deal was found by Cheapflights users on 7/29. 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 9/231:55 pm
STL
- SYD
2 stops25h 55m
Delta
Wed 10/710:15 am
SYD
- STL
2 stops27h 08m
Delta
Deal found 7/29![Delta logo]()
$1,312
This Qantas Airways deal was found by Cheapflights users on 7/26. 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 9/95:10 pm
STL
- PER
2 stops31h 25m
Qantas Airways
Wed 9/1610:30 am
PER
- STL
2 stops26h 00m
Qantas Airways
Deal found 7/26![Qantas Airways logo]()
$1,342
This Gotogate deal was found by Cheapflights users on 7/28. 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 9/93:19 pm
STL
- PER
2 stops62h 16m
Qatar Airways
Wed 9/1610:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 7/28![Qatar Airways logo]()
$1,594
This American Airlines deal was found by Cheapflights users on 7/25. 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 11/1910:21 am
STL
- CNS
2 stops32h 44m
American Airlines
Sat 12/126:00 am
CNS
- STL
2 stops29h 27m
American Airlines
Deal found 7/25![American Airlines logo]()
$1,723
This Cathay Pacific deal was found by Cheapflights users on 7/29. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:04 am
STL
- PER
2 stops51h 51m
Cathay Pacific
Sat 10/3112:25 am
PER
- STL
2 stops33h 54m
Cathay Pacific
Deal found 7/29![Cathay Pacific logo]()
$1,735
This Ovago deal was found by Cheapflights users on 7/26. 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.
Sun 12/139:11 am
STL
- MEL
2 stops38h 49m
Etihad Airways
Tue 1/56:20 pm
MEL
- STL
2 stops35h 15m
Etihad Airways
Deal found 7/26![Etihad Airways logo]()
$2,180
This lastminute.com deal was found by Cheapflights users on 7/29. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:13 pm
STL
- PER
3 stops38h 57m
Air New Zealand
Sat 9/194:25 pm
PER
- STL
2 stops38h 34m
Air New Zealand
Deal found 7/29![Air New Zealand logo]()
$2,217
This FlightHub deal was found by Cheapflights users on 7/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:10 pm
STL
- SYD
2 stops52h 10m
Air Canada
Sun 9/279:20 am
SYD
- STL
2 stops48h 21m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,129
This United Airlines deal was found by Cheapflights users on 7/25. 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 9/144:40 pm
STL
- SYD
2 stops23h 15m
United Airlines
Sun 9/279:30 am
SYD
- STL
2 stops24h 13m
United Airlines
Deal found 7/25![United Airlines logo]()
$1,170
This FlightHub deal was found by Cheapflights users on 7/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:10 pm
STL
- SYD
2 stops52h 10m
Air Canada
Mon 9/149:20 am
SYD
- STL
2 stops43h 40m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,134
This Delta deal was found by Cheapflights users on 7/30. 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 10/255:35 pm
STL
- BNE
2 stops46h 55m
Delta
Wed 11/1810:40 am
BNE
- STL
2 stops26h 11m
Delta
Deal found 7/30![Delta logo]()
$1,316
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/2612:59 pm
STL
- MEL
2 stops28h 16m
United Airlines
Wed 9/910:55 am
MEL
- STL
1 stop22h 44m
United Airlines
Deal found 7/29![United Airlines logo]()
$1,216
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:47 pm
STL
- MEL
1 stop24h 13m
Qantas Airways
Wed 11/1110:45 pm
MEL
- STL
1 stop42h 00m
Qantas Airways
Deal found 7/29![Qantas Airways logo]()
$1,390
This Air Canada deal was found by Cheapflights users on 7/28. 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 10/202:40 pm
STL
- AVV
3 stops33h 25m
Multiple Airlines
Tue 11/36:00 am
AVV
- STL
3 stops50h 26m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,447
This United Airlines deal was found by Cheapflights users on 7/28. 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 10/2011:10 am
STL
- MEL
2 stops30h 05m
United Airlines
Tue 11/312:45 pm
MEL
- STL
1 stop22h 20m
United Airlines
Deal found 7/28![United Airlines logo]()
$1,216
This Air Canada deal was found by Cheapflights users on 7/28. 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 10/188:55 am
STL
- AVV
3 stops37h 15m
Multiple Airlines
Sun 10/256:00 am
AVV
- STL
3 stops49h 26m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,447
This United Airlines deal was found by Cheapflights users on 7/26. 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 11/138:30 am
STL
- SYD
1 stop29h 30m
United Airlines
Mon 11/2311:50 am
SYD
- STL
1 stop23h 15m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,220
This Qantas Airways deal was found by Cheapflights users on 7/26. 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.
Sun 8/236:00 am
STL
- HBA
2 stops37h 45m
Qantas Airways
Thu 8/2711:25 am
HBA
- STL
2 stops50h 34m
Qantas Airways
Deal found 7/26![Qantas Airways logo]()
$1,515
This Qatar Airways deal was found by Cheapflights users on 7/29. 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.
Sat 9/126:29 am
STL
- PER
2 stops47h 06m
Qatar Airways
Sat 9/1910:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 7/29![Qatar Airways logo]()
$1,716
This United Airlines deal was found by Cheapflights users on 7/26. 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 11/136:15 am
STL
- SYD
1 stop31h 45m
United Airlines
Tue 11/249:20 am
SYD
- STL
1 stop24h 30m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,220
This Air Canada deal was found by Cheapflights users on 7/28. 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 8/282:40 pm
STL
- BNE
3 stops30h 20m
Air Canada
Fri 9/410:00 am
BNE
- STL
2 stops23h 42m
Air Canada
Deal found 7/28![Air Canada logo]()
$1,513
This Trip.com deal was found by Cheapflights users on 7/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm
STL
- PER
3 stops34h 48m
Multiple Airlines
Wed 9/1610:30 am
PER
- STL
3 stops36h 05m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$1,544
This Qantas Airways deal was found by Cheapflights users on 7/28. 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 10/287:10 pm
STL
- CBR
2 stops28h 55m
Qantas Airways
Sun 11/17:45 pm
CBR
- STL
2 stops45h 00m
Qantas Airways
Deal found 7/28![Qantas Airways logo]()
$1,685
This United Airlines deal was found by Cheapflights users on 7/27. 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 10/256:50 pm
STL
- BNE
2 stops44h 40m
United Airlines
Wed 11/1811:40 am
BNE
- STL
1 stop22h 25m
United Airlines
Deal found 7/27![United Airlines logo]()
$1,267
This Air Canada deal was found by Cheapflights users on 7/28. 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 9/118:55 am
STL
- BNE
3 stops35h 35m
Air Canada
Fri 9/188:05 pm
BNE
- STL
3 stops39h 15m
Air Canada
Deal found 7/28![Air Canada logo]()
$1,542
This Air Canada deal was found by Cheapflights users on 7/29. 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 8/268:55 am
STL
- AVV
3 stops38h 15m
Multiple Airlines
Wed 9/98:55 pm
AVV
- STL
3 stops38h 25m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$1,615
This United Airlines deal was found by Cheapflights users on 7/26. 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 11/137:05 pm
STL
- SYD
1 stop21h 15m
United Airlines
Fri 11/279:15 am
SYD
- STL
1 stop24h 35m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,270
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated July 30, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/29. 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.
Fri 7/312:30 pm
STL
- SYD
2 stops49h 20m
Delta
Sun 8/99:15 am
SYD
- STL
2 stops29h 43m
Delta
Deal found 7/29![Delta logo]()
$1,308
This FlightHub deal was found by Cheapflights users on 7/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:10 pm
STL
- BNE
2 stops51h 55m
Air Canada
Mon 8/3110:00 am
BNE
- STL
2 stops41h 40m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,082
This oojo deal was found by Cheapflights users on 7/29. 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 8/36:37 am
STL
- SYD
1 stop33h 53m
Qantas Airways
Mon 8/109:10 am
SYD
- STL
1 stop28h 49m
Qantas Airways
Deal found 7/29![Qantas Airways logo]()
$1,228
This oojo deal was found by Cheapflights users on 7/28. 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 8/46:37 am
STL
- HBA
2 stops48h 13m
Qantas Airways
Tue 8/116:00 am
HBA
- STL
2 stops31h 59m
Qantas Airways
Deal found 7/28![Qantas Airways logo]()
$1,474
This oojo deal was found by Cheapflights users on 7/29. 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 8/76:00 am
STL
- SYD
1 stop34h 05m
Qantas Airways
Mon 8/179:10 am
SYD
- STL
1 stop28h 49m
Qantas Airways
Deal found 7/29![Qantas Airways logo]()
$1,269
This American Airlines deal was found by Cheapflights users on 7/29. 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 8/712:45 pm
STL
- SYD
2 stops26h 40m
American Airlines
Mon 8/179:10 am
SYD
- STL
2 stops26h 16m
American Airlines
Deal found 7/29![American Airlines logo]()
$1,278
This Rumbo deal was found by Cheapflights users on 7/29. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:00 am
STL
- MEL
1 stop33h 45m
Qantas Airways
Tue 8/189:45 am
MEL
- STL
1 stop28h 14m
Qantas Airways
Deal found 7/29![Qantas Airways logo]()
$1,307
This Rumbo deal was found by Cheapflights users on 7/29. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:00 am
STL
- MEL
1 stop33h 45m
Multiple Airlines
Tue 8/188:50 pm
MEL
- STL
2 stops41h 09m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$1,431
This American Airlines deal was found by Cheapflights users on 7/29. 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 8/2610:22 am
STL
- MEL
2 stops27h 38m
American Airlines
Wed 9/91:35 pm
MEL
- STL
1 stop19h 29m
American Airlines
Deal found 7/29![American Airlines logo]()
$1,194
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/2612:59 pm
STL
- MEL
2 stops28h 16m
United Airlines
Wed 9/910:55 am
MEL
- STL
1 stop22h 44m
United Airlines
Deal found 7/29![United Airlines logo]()
$1,216
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/265:11 pm
STL
- SYD
2 stops25h 34m
American Airlines
Sat 9/129:10 am
SYD
- STL
1 stop29h 20m
American Airlines
Deal found 7/26![American Airlines logo]()
$1,232
This CheapOair deal was found by Cheapflights users on 7/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:30 pm
STL
- SYD
2 stops46h 50m
Air Canada
Sat 9/129:20 am
SYD
- STL
2 stops39h 52m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,283
One-way flights from St. Louis to AustraliaSearch for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
This deal was found by Cheapflights users on 7/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 7/26![United Airlines logo]()
$635
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/54:48 pm
STL
- SYD
2 stops23h 12m
United Airlines
Deal found 7/30![United Airlines logo]()
$644
This Qantas Airways deal was found by Cheapflights users on 7/30. 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 8/46:37 am
STL
- SYD
1 stop33h 28m
Qantas Airways
Deal found 7/30![Qantas Airways logo]()
$658
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:41 pm
STL
- SYD
3 stops48h 49m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$689
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:34 pm
STL
- SYD
2 stops42h 56m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$717
This oojo deal was found by Cheapflights users on 7/28. 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.
Thu 10/223:20 pm
STL
- SYD
1 stop23h 35m
Qantas Airways
Deal found 7/28![Qantas Airways logo]()
$748
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:10 pm
STL
- SYD
2 stops45h 20m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$785
This Air Canada deal was found by Cheapflights users on 7/28. 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 10/2212:10 pm
STL
- SYD
3 stops52h 10m
Air Canada
Deal found 7/28![Air Canada logo]()
$788
This American Airlines deal was found by Cheapflights users on 7/30. 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 8/58:36 am
STL
- SYD
3 stops32h 44m
American Airlines
Deal found 7/30![American Airlines logo]()
$801
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/67:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 7/30![United Airlines logo]()
$837
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/1112:59 pm
STL
- BNE
2 stops26h 31m
United Airlines
Deal found 7/28![United Airlines logo]()
$1,020
This KAYAK deal was found by Cheapflights users on 7/30. 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.
Wed 12/166:55 am
STL
- MEL
2 stops34h 40m
Qantas Airways
Deal found 7/30![Qantas Airways logo]()
$1,389
Find flight deals from St. Louis to Australia
Keep the following information in mind while searching for St. Louis to Australia flight deals. Data was last updated July 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,079 (oojo) |
One-way from | $635 |
Popular in | December |
Cheapest in | July |
Average price | $1,161 |
Cheapflights Fare Finder
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 July 30, 2026.
Use the filters below to find and compare flights from St. Louis to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Sun 10/25
1:08 pm-7:45 am
2 stops27h 37m
Brisbane
Wed 11/18
10:45 am-3:26 pm
2 stops44h 41m
$1,104
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 9/7
12:10 pm-7:20 am
2 stops52h 10m
Sydney Kingsford Smith
Sun 9/27
9:20 am-6:41 pm
2 stops48h 21m
$1,129
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
Tue 10/27
4:05 pm-11:15 pm
3 stops63h 10m
Melbourne Avalon
Wed 11/11
6:00 am-3:26 pm
3 stops50h 26m
$1,130
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 9/7
12:10 pm-7:20 am
2 stops52h 10m
Sydney Kingsford Smith
Mon 9/14
9:20 am-2:00 pm
2 stops43h 40m
$1,134
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Wed 9/9
3:32 pm-6:30 am
2 stops23h 58m
Brisbane
Wed 9/16
10:30 am-6:38 pm
1 stop23h 08m
$1,140
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 9/14
4:40 pm-6:55 am
2 stops23h 15m
Sydney Kingsford Smith
Sun 9/27
9:30 am-6:43 pm
2 stops24h 13m
$1,170
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Wed 8/26
12:59 pm-8:15 am
2 stops28h 16m
Melbourne
Wed 9/9
10:55 am-6:39 pm
1 stop22h 44m
$1,216
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 10/20
11:10 am-9:15 am
2 stops30h 05m
Melbourne
Tue 11/3
12:45 pm-6:05 pm
1 stop22h 20m
$1,216
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Fri 11/13
8:30 am-7:00 am
1 stop29h 30m
Sydney Kingsford Smith
Mon 11/23
11:50 am-6:05 pm
1 stop23h 15m
$1,220
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Fri 11/13
6:15 am-7:00 am
1 stop31h 45m
Sydney Kingsford Smith
Tue 11/24
9:20 am-4:50 pm
1 stop24h 30m
$1,220
Showing 1-10 of 47 resultsSorted by cheapest first
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.
STL-BNE
STL-MEL
STL-SYD
STL-HBA
STL-AVV
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Australia
STL-AU0
STL-BNE
STL-MEL
STL-SYD
STL-HBA
What is the cheapest month to book a flight from St. Louis to Australia?
Currently, May is the cheapest month in which you can book a flight from St. Louis to Australia (average of $992). Flying from St. Louis to Australia in August is currently the most expensive (average of $1,554). 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 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 July 30, 2026.
Read reviews from past customers who have flown Qantas Airways,United Airlines, andAmerican Airlines from St. Louis to Australia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.5
Boarding
7.7
Crew
8.1
Food
7.0
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Overall
7.5
Boarding
7.7
Crew
8.1
Food
7.0
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Overall
7.5
Boarding
7.7
Crew
8.1
Food
7.0
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Overall
7.5
Boarding
7.7
Crew
8.1
Food
7.0
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Overall
7.5
Boarding
7.7
Crew
8.1
Food
7.0
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
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.
Complete your trip
Complete your trip to Australia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Australia by cabin class
Find flights from St. Louis to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Australia flights
Browse other St. Louis and Australia flight options. Last updated on July 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Australia regions
Consider these flights traveling to Australia regions.
Top 4 airlines flying from St. Louis to Australia
Discover the top 4 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 July 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,404 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,029 | Average$1,373 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,056 | Average$1,343 | FlexibilityNo cancel fee | On-time71% |