$522+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
may. 3 — may. 101
Round-trip
1 adult, Economy
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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 abril 3, 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 abril 3, 2026.
This Justfly.com deal was found by Cheapflights users on 3/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/11:05 pm
STL
- BNE
2 stops27h 00m
Air Canada
lun. 6/1510:00 am
BNE
- STL
2 stops49h 43m
Air Canada
Deal found 3/29![Air Canada logo]()
$985
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/301:05 pm
STL
- BNE
2 stops51h 00m
Air Canada
jue. 6/1110:15 am
BNE
- STL
2 stops49h 28m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,023
This FlightHub deal was found by Cheapflights users on 4/1. 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.
sáb. 6/271:20 pm
STL
- BNE
2 stops50h 45m
Air Canada
dom. 7/510:00 am
BNE
- STL
2 stops52h 57m
Air Canada
Deal found 4/1![Air Canada logo]()
$1,135
This Jetabroad deal was found by Cheapflights users on 3/30. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/45:18 pm
STL
- MEL
2 stops35h 02m
Multiple Airlines
jue. 8/137:30 am
MEL
- STL
2 stops29h 30m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,140
This Air Canada deal was found by Cheapflights users on 3/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/2312:10 pm
STL
- SYD
2 stops28h 10m
Air Canada
mié. 10/710:20 am
SYD
- STL
2 stops48h 21m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,151
This Air Canada deal was found by Cheapflights users on 4/1. 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.
mar. 9/812:10 pm
STL
- BNE
2 stops27h 55m
Air Canada
lun. 9/2810:00 am
BNE
- STL
2 stops25h 00m
Air Canada
Deal found 4/1![Air Canada logo]()
$1,153
This Justfly.com deal was found by Cheapflights users on 4/2. 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.
jue. 8/205:10 am
STL
- SYD
2 stops35h 10m
Air Canada
vie. 9/119:20 am
SYD
- STL
2 stops42h 20m
Air Canada
Deal found 4/2![Air Canada logo]()
$1,153
This Air Canada deal was found by Cheapflights users on 4/1. 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.
mar. 10/138:55 am
STL
- SYD
2 stops31h 25m
Air Canada
vie. 11/1311:20 am
SYD
- STL
2 stops45h 10m
Air Canada
Deal found 4/1![Air Canada logo]()
$1,160
This Air Canada deal was found by Cheapflights users on 3/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/74:15 pm
STL
- SYD
2 stops48h 20m
Air Canada
sáb. 11/1411:20 am
SYD
- STL
2 stops45h 10m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,161
This Justfly.com deal was found by Cheapflights users on 3/31. 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.
mar. 10/134:30 pm
STL
- SYD
2 stops23h 50m
Air Canada
mié. 11/1811:20 am
SYD
- STL
2 stops45h 10m
Air Canada
Deal found 3/31![Air Canada logo]()
$1,167
This FlightHub deal was found by Cheapflights users on 3/29. 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.
dom. 10/45:20 am
STL
- SYD
2 stops35h 00m
Air Canada
dom. 10/1810:20 am
SYD
- STL
2 stops29h 23m
Air Canada
Deal found 3/29![Air Canada logo]()
$1,169
This Justfly.com deal was found by Cheapflights users on 4/2. 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.
lun. 9/75:10 am
STL
- SYD
2 stops35h 10m
Air Canada
lun. 9/149:20 am
SYD
- STL
2 stops29h 30m
Air Canada
Deal found 4/2![Air Canada logo]()
$1,176
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 abril 3, 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 abril 3, 2026.
This Justfly.com deal was found by Cheapflights users on 3/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 6/274:45 pm
STL
- BNE
2 stops23h 20m
Air Canada
dom. 7/510:00 am
BNE
- STL
2 stops52h 57m
Air Canada
Deal found 3/29![Air Canada logo]()
$1,175
This Air Canada deal was found by Cheapflights users on 3/31. 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.
mar. 9/18:55 am
STL
- AVV
3 stops38h 15m
Multiple Airlines
mar. 9/158:55 pm
AVV
- STL
3 stops56h 05m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$1,371
This United Airlines deal was found by Cheapflights users on 3/30. 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.
mié. 5/134:44 pm
STL
- MEL
2 stops23h 46m
United Airlines
mié. 8/1210:55 am
MEL
- STL
2 stops23h 36m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
This Qantas Airways deal was found by Cheapflights users on 4/2. 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.
lun. 5/43:38 pm
STL
- MEL
1 stop22h 22m
Qantas Airways
mié. 5/201:35 pm
MEL
- STL
1 stop20h 55m
Qantas Airways
Deal found 4/2![Qantas Airways logo]()
$1,481
This Delta deal was found by Cheapflights users on 3/30. 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.
dom. 4/193:25 pm
STL
- SYD
2 stops24h 25m
Delta
mar. 4/289:15 am
SYD
- STL
2 stops22h 35m
Delta
Deal found 3/30![Delta logo]()
$1,491
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/66:41 am
STL
- PER
2 stops46h 54m
Qatar Airways
vie. 9/1110:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 3/30![Qatar Airways logo]()
$1,548
This American Airlines deal was found by Cheapflights users on 3/29. 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.
sáb. 6/272:36 pm
STL
- MEL
2 stops25h 09m
American Airlines
sáb. 7/49:45 am
MEL
- STL
2 stops25h 06m
American Airlines
Deal found 3/29![American Airlines logo]()
$1,593
This BusinessClass deal was found by Cheapflights users on 3/29. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/37:05 am
STL
- CBR
2 stops36h 45m
Air New Zealand
dom. 5/176:40 pm
CBR
- STL
3 stops41h 03m
Air New Zealand
Deal found 3/29![Air New Zealand logo]()
$2,228
This Expedia deal was found by Cheapflights users on 3/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/131:05 pm
STL
- BNE
2 stops27h 00m
Air Canada
mié. 5/2010:00 am
BNE
- STL
2 stops41h 06m
Air Canada
Deal found 3/29![Air Canada logo]()
$1,226
This United Airlines deal was found by Cheapflights users on 3/30. 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.
mar. 5/194:06 pm
STL
- MEL
2 stops25h 09m
United Airlines
dom. 8/1610:55 am
MEL
- STL
1 stop22h 29m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
This Qatar Airways deal was found by Cheapflights users on 3/31. 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.
mié. 9/166:41 am
STL
- PER
2 stops46h 54m
Qatar Airways
lun. 10/1910:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 3/31![Qatar Airways logo]()
$1,592
This United Airlines deal was found by Cheapflights users on 3/30. 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.
mié. 5/204:44 pm
STL
- MEL
2 stops23h 46m
United Airlines
vie. 8/1410:55 am
MEL
- STL
2 stops24h 44m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
This Air Canada deal was found by Cheapflights users on 4/2. 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.
mié. 5/207:05 am
STL
- BNE
2 stops33h 00m
Air Canada
dom. 5/2410:00 am
BNE
- STL
2 stops25h 25m
Air Canada
Deal found 4/2![Air Canada logo]()
$1,486
This American Airlines deal was found by Cheapflights users on 4/2. 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.
dom. 5/173:38 pm
STL
- CBR
2 stops30h 27m
American Airlines
dom. 5/246:10 am
CBR
- STL
2 stops25h 23m
American Airlines
Deal found 4/2![American Airlines logo]()
$1,697
This lastminute.com deal was found by Cheapflights users on 3/31. 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.
sáb. 5/166:21 am
STL
- HBA
2 stops59h 14m
Multiple Airlines
sáb. 5/239:20 am
HBA
- STL
2 stops53h 36m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$1,709
This oojo deal was found by Cheapflights users on 3/29. 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.
dom. 5/36:21 am
STL
- CBR
2 stops36h 49m
Qantas Airways
dom. 5/176:55 pm
CBR
- STL
2 stops44h 04m
Qantas Airways
Deal found 3/29![Qantas Airways logo]()
$1,761
This United Airlines deal was found by Cheapflights users on 3/30. 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.
vie. 5/157:06 pm
STL
- MEL
1 stop22h 09m
United Airlines
vie. 8/149:30 am
MEL
- STL
2 stops25h 01m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
This Qatar Airways deal was found by Cheapflights users on 4/2. 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.
mar. 8/186:02 am
STL
- PER
2 stops47h 33m
Qatar Airways
lun. 9/2110:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 4/2![Qatar Airways logo]()
$1,666
This lastminute.com deal was found by Cheapflights users on 3/29. 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.
mié. 5/136:21 am
STL
- CNS
2 stops45h 04m
Multiple Airlines
mié. 5/2010:15 am
CNS
- STL
2 stops28h 44m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,725
This oojo deal was found by Cheapflights users on 3/31. 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.
lun. 5/43:38 pm
STL
- CNS
2 stops29h 12m
Qantas Airways
dom. 8/96:20 pm
CNS
- STL
2 stops43h 48m
Qantas Airways
Deal found 3/31![Qantas Airways logo]()
$1,787
This United Airlines deal was found by Cheapflights users on 3/31. 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.
vie. 5/154:44 pm
STL
- MEL
2 stops23h 46m
United Airlines
vie. 5/2210:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 3/31![United Airlines logo]()
$1,478
This KAYAK deal was found by Cheapflights users on 4/2. 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.
sáb. 5/21:05 pm
STL
- SYD
2 stops51h 15m
Air Canada
sáb. 5/99:20 am
SYD
- STL
2 stops42h 53m
Air Canada
Deal found 4/2![Air Canada logo]()
$1,631
This Qatar Airways deal was found by Cheapflights users on 3/31. 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.
mar. 9/156:41 am
STL
- PER
2 stops46h 54m
Qatar Airways
sáb. 10/1710:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 3/31![Qatar Airways logo]()
$1,706
This Air Canada deal was found by Cheapflights users on 3/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/48:55 am
STL
- AVV
3 stops38h 15m
Multiple Airlines
jue. 8/138:55 pm
AVV
- STL
3 stops38h 12m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,726
This United Airlines deal was found by Cheapflights users on 4/2. 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.
lun. 5/42:35 pm
STL
- MEL
2 stops25h 55m
United Airlines
mié. 5/209:30 am
MEL
- STL
2 stops22h 09m
United Airlines
Deal found 4/2![United Airlines logo]()
$1,483
This oojo deal was found by Cheapflights users on 3/29. 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.
sáb. 6/276:35 am
STL
- AVV
2 stops49h 15m
Multiple Airlines
sáb. 7/46:00 am
AVV
- STL
2 stops32h 59m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,739
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/45:18 pm
STL
- AVV
2 stops31h 47m
Qantas Airways
jue. 8/1310:30 am
AVV
- STL
2 stops27h 38m
Qantas Airways
Deal found 3/30![Qantas Airways logo]()
$1,965
This United Airlines deal was found by Cheapflights users on 3/29. 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.
mar. 4/284:49 pm
STL
- MEL
2 stops24h 26m
United Airlines
mar. 5/510:55 am
MEL
- STL
2 stops27h 01m
United Airlines
Deal found 3/29![United Airlines logo]()
$1,484
This Qatar Airways deal was found by Cheapflights users on 4/2. 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.
jue. 8/204:18 pm
STL
- PER
2 stops37h 17m
Qatar Airways
lun. 9/2110:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 4/2![Qatar Airways logo]()
$1,846
This United Airlines deal was found by Cheapflights users on 4/2. 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.
dom. 5/174:44 pm
STL
- SYD
2 stops23h 16m
United Airlines
dom. 5/2410:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 4/2![United Airlines logo]()
$1,485
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated abril 3, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated abril 3, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 3/31. 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.
jue. 4/302:35 pm
STL
- BNE
2 stops49h 30m
Air Canada
jue. 5/710:00 am
BNE
- STL
2 stops45h 57m
Air Canada
Deal found 3/31![Air Canada logo]()
$1,219
This Air Canada deal was found by Cheapflights users on 4/2. 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.
lun. 5/42:15 pm
STL
- MEL
3 stops30h 20m
Air Canada
mié. 5/208:30 pm
MEL
- STL
3 stops38h 39m
Air Canada
Deal found 4/2![Air Canada logo]()
$1,207
This Air Canada deal was found by Cheapflights users on 4/2. 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.
lun. 5/41:05 pm
STL
- SYD
2 stops27h 15m
Air Canada
lun. 5/189:20 am
SYD
- STL
2 stops26h 05m
Air Canada
Deal found 4/2![Air Canada logo]()
$1,262
This Air Canada deal was found by Cheapflights users on 3/29. 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.
mié. 5/131:05 pm
STL
- BNE
2 stops27h 00m
Multiple Airlines
mié. 5/207:25 pm
BNE
- STL
3 stops39h 44m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,180
This Expedia deal was found by Cheapflights users on 3/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/131:05 pm
STL
- BNE
2 stops27h 00m
Air Canada
mié. 5/2010:00 am
BNE
- STL
2 stops41h 06m
Air Canada
Deal found 3/29![Air Canada logo]()
$1,226
This Air Canada deal was found by Cheapflights users on 3/28. 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.
mié. 5/131:05 pm
STL
- SYD
2 stops51h 15m
Air Canada
mié. 5/209:20 am
SYD
- STL
2 stops41h 46m
Air Canada
Deal found 3/28![Air Canada logo]()
$1,268
This Air Canada deal was found by Cheapflights users on 4/1. 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.
jue. 5/141:05 pm
STL
- SYD
2 stops27h 15m
Air Canada
jue. 5/219:20 am
SYD
- STL
3 stops50h 05m
Air Canada
Deal found 4/1![Air Canada logo]()
$1,273
This Bravofly deal was found by Cheapflights users on 3/30. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/166:11 pm
STL
- MEL
2 stops34h 09m
Multiple Airlines
jue. 8/137:30 am
MEL
- STL
2 stops29h 30m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,229
This lastminute.com deal was found by Cheapflights users on 4/1. 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.
sáb. 5/166:11 pm
STL
- MEL
2 stops34h 09m
Multiple Airlines
sáb. 5/237:30 am
MEL
- STL
2 stops29h 12m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$1,232
This Air Canada deal was found by Cheapflights users on 4/2. 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.
dom. 5/171:05 pm
STL
- SYD
2 stops27h 15m
Air Canada
dom. 5/249:20 am
SYD
- STL
2 stops26h 05m
Air Canada
Deal found 4/2![Air Canada logo]()
$1,263
This Air Canada deal was found by Cheapflights users on 3/31. 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.
mié. 5/207:05 am
STL
- BNE
2 stops33h 00m
Air Canada
dom. 5/2410:00 am
BNE
- STL
2 stops41h 06m
Air Canada
Deal found 3/31![Air Canada logo]()
$1,230
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/301:05 pm
STL
- BNE
2 stops51h 00m
Air Canada
jue. 6/1110:15 am
BNE
- STL
2 stops49h 28m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,023
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 abril 3, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated abril 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
jue. 5/1412:16 pm
STL
- MEL
3 stops32h 44m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$522
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
mar. 5/196:51 pm
STL
- MEL
3 stops50h 14m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$523
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
vie. 5/159:18 pm
STL
- MEL
3 stops47h 42m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$549
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
lun. 5/188:08 pm
STL
- MEL
3 stops48h 52m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$565
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
sáb. 5/169:18 pm
STL
- MEL
3 stops48h 07m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
jue. 5/143:33 pm
STL
- AVV
3 stops40h 17m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$575
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
dom. 5/174:19 pm
STL
- MEL
3 stops53h 06m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$654
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
sáb. 5/27:00 am
STL
- CBR
3 stops38h 25m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$655
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
mié. 5/136:21 am
STL
- AVV
2 stops49h 29m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$709
This Kiwi.com deal was found by Cheapflights users on 4/2. 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.
lun. 4/68:19 pm
STL
- SYD
2 stops44h 11m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$752
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
mar. 5/196:51 pm
STL
- AVV
3 stops58h 29m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$758
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
mar. 4/217:00 am
STL
- CNS
3 stops37h 40m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$779
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 abril 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $985 (Justfly.com) |
One-way from | $522 (Kiwi.com) |
Popular in | December |
Cheapest in | March |
Average price | $1,412 |
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 abril 3, 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
sáb. 6/27
4:45 pm-7:05 am
2 stops23h 20m
Brisbane
dom. 7/5
10:00 am-11:57 pm
2 stops52h 57m
$1,175
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
mié. 5/13
1:05 pm-7:05 am
2 stops27h 00m
Brisbane
mié. 5/20
10:00 am-12:06 pm
2 stops41h 06m
$1,226
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
mar. 9/1
8:55 am-2:10 pm
3 stops38h 15m
Melbourne Avalon
mar. 9/15
8:55 pm-2:00 pm
3 stops56h 05m
$1,371
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
mié. 5/13
4:44 pm-7:30 am
2 stops23h 46m
Melbourne
mié. 8/12
10:55 am-7:31 pm
2 stops23h 36m
$1,461
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
mar. 5/19
4:06 pm-8:15 am
2 stops25h 09m
Melbourne
dom. 8/16
10:55 am-6:24 pm
1 stop22h 29m
$1,461
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
mié. 5/20
4:44 pm-7:30 am
2 stops23h 46m
Melbourne
vie. 8/14
10:55 am-8:39 pm
2 stops24h 44m
$1,461
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
vie. 5/15
7:06 pm-8:15 am
1 stop22h 09m
Melbourne
vie. 8/14
9:30 am-7:31 pm
2 stops25h 01m
$1,461
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
vie. 5/15
4:44 pm-7:30 am
2 stops23h 46m
Melbourne
vie. 5/22
10:55 am-6:17 pm
1 stop22h 22m
$1,478
Quickest round-trip
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
lun. 5/4
3:38 pm-5:00 am
1 stop22h 22m
Melbourne
mié. 5/20
1:35 pm-7:30 pm
1 stop20h 55m
$1,481
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
lun. 5/4
2:35 pm-7:30 am
2 stops25h 55m
Melbourne
mié. 5/20
9:30 am-4:39 pm
2 stops22h 09m
$1,483
Showing 1-10 of 54 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-MEL
STL-AVV
STL-CBR
STL-SYD
STL-CNS
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-MEL
STL-AVV
STL-CBR
STL-SYD
What is the cheapest month to book a flight from St. Louis to Australia?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Australia (average of $649). Flying from St. Louis to Australia in June is currently the most expensive (average of $1,225). 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 abril 3, 2026.
Read reviews from past customers who have flown Fiji Airways,Qantas Airways, andUnited 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.
Crew
8.5
Boarding
8.2
Comfort
8.1
Entertainment
7.5
Overall
8.1
Food
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Crew
8.5
Boarding
8.2
Comfort
8.1
Entertainment
7.5
Overall
8.1
Food
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Crew
8.5
Boarding
8.2
Comfort
8.1
Entertainment
7.5
Overall
8.1
Food
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Crew
8.5
Boarding
8.2
Comfort
8.1
Entertainment
7.5
Overall
8.1
Food
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Crew
8.5
Boarding
8.2
Comfort
8.1
Entertainment
7.5
Overall
8.1
Food
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Crew
8.5
Boarding
8.2
Comfort
8.1
Entertainment
7.5
Overall
8.1
Food
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
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 abril 3, 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 5 airlines flying from St. Louis to Australia
Discover the top 5 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 abril 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$887 | Average$1,268 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$975 | Average$1,304 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,029 | Average$1,430 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,056 | Average$1,370 | FlexibilityNo cancel fee | On-time71% |