$511+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
abr. 3 — abr. 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 marzo 4, 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 marzo 4, 2026.
This Air Canada deal was found by Cheapflights users on 2/28. 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.
lun. 5/251:00 pm
STL
- BNE
2 stops51h 05m
Air Canada
lun. 6/810:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/28![Air Canada logo]()
$889
This Expedia deal was found by Cheapflights users on 2/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/261:00 pm
STL
- BNE
2 stops27h 05m
Air Canada
vie. 6/510:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$892
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/241:00 pm
STL
- BNE
2 stops27h 05m
Air Canada
mar. 6/210:00 am
BNE
- STL
2 stops49h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$899
This Air Canada deal was found by Cheapflights users on 3/3. 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.
vie. 5/222:20 pm
STL
- BNE
2 stops25h 45m
Air Canada
jue. 6/410:15 am
BNE
- STL
2 stops25h 10m
Air Canada
Deal found 3/3![Air Canada logo]()
$900
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/231:00 pm
STL
- BNE
2 stops51h 05m
Air Canada
vie. 6/510:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$902
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/221:00 pm
STL
- BNE
2 stops27h 05m
Air Canada
vie. 6/510:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$905
This BusinessClass deal was found by Cheapflights users on 2/27. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/252:20 pm
STL
- BNE
2 stops25h 45m
Multiple Airlines
vie. 6/510:00 am
BNE
- STL
2 stops25h 05m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$907
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/267:05 am
STL
- BNE
3 stops37h 25m
Air Canada
mar. 6/910:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$928
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/242:20 pm
STL
- BNE
3 stops33h 10m
Air Canada
vie. 6/510:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$931
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/237:05 am
STL
- BNE
3 stops37h 25m
Air Canada
jue. 6/410:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$934
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/221:00 pm
STL
- BNE
2 stops27h 05m
Air Canada
mié. 6/310:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$948
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/231:00 pm
STL
- BNE
2 stops51h 05m
Air Canada
mié. 6/310:00 am
BNE
- STL
2 stops25h 05m
Air Canada
Deal found 2/27![Air Canada logo]()
$955
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 marzo 4, 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 marzo 4, 2026.
This United Airlines deal was found by Cheapflights users on 2/27. 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.
dom. 5/247:23 pm
STL
- BNE
1 stop20h 07m
United Airlines
vie. 6/510:30 am
BNE
- STL
1 stop22h 47m
United Airlines
Deal found 2/27![United Airlines logo]()
$1,065
This Delta deal was found by Cheapflights users on 2/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/131:02 pm
STL
- SYD
2 stops26h 48m
Delta
lun. 4/209:15 am
SYD
- STL
2 stops30h 10m
Delta
Deal found 2/27![Delta logo]()
$1,138
This Qantas Airways deal was found by Cheapflights users on 3/2. 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.
jue. 4/306:21 am
STL
- SYD
2 stops39h 54m
Qantas Airways
lun. 5/412:00 pm
SYD
- STL
1 stop22h 30m
Qantas Airways
Deal found 3/2![Qantas Airways logo]()
$1,151
This Priceline deal was found by Cheapflights users on 3/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/227:05 am
STL
- BNE
3 stops57h 55m
Air Canada
jue. 6/48:45 pm
BNE
- STL
3 stops54h 21m
Air Canada
Deal found 3/3![Air Canada logo]()
$1,167
This American Airlines deal was found by Cheapflights users on 2/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/144:30 pm
STL
- SYD
2 stops23h 35m
American Airlines
mar. 4/219:10 am
SYD
- STL
1 stop29h 47m
American Airlines
Deal found 2/28![American Airlines logo]()
$1,182
This Expedia deal was found by Cheapflights users on 3/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/296:38 am
STL
- AVV
2 stops39h 32m
Multiple Airlines
mié. 4/86:00 am
AVV
- STL
2 stops32h 57m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$1,442
This FlightHub deal was found by Cheapflights users on 3/3. 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.
mar. 3/316:08 pm
STL
- CBR
3 stops46h 12m
Qatar Airways
mar. 4/712:10 pm
CBR
- STL
3 stops44h 11m
Qatar Airways
Deal found 3/3![Qatar Airways logo]()
$2,066
This United Airlines deal was found by Cheapflights users on 2/27. 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.
vie. 5/227:23 pm
STL
- BNE
1 stop20h 07m
United Airlines
mié. 6/310:30 am
BNE
- STL
1 stop22h 47m
United Airlines
Deal found 2/27![United Airlines logo]()
$1,065
This Delta deal was found by Cheapflights users on 2/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/1411:42 am
STL
- SYD
2 stops28h 08m
Delta
mar. 4/219:15 am
SYD
- STL
2 stops22h 27m
Delta
Deal found 2/28![Delta logo]()
$1,150
This Qantas Airways deal was found by Cheapflights users on 3/3. 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.
sáb. 8/83:33 pm
STL
- MEL
1 stop22h 27m
Qantas Airways
mié. 8/121:35 pm
MEL
- STL
1 stop19h 54m
Qantas Airways
Deal found 3/3![Qantas Airways logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 2/27. 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.
sáb. 5/235:41 pm
STL
- BNE
2 stops45h 49m
United Airlines
vie. 6/1210:30 am
BNE
- STL
2 stops25h 46m
United Airlines
Deal found 2/27![United Airlines logo]()
$1,085
This Delta deal was found by Cheapflights users on 2/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/191:02 pm
STL
- SYD
2 stops26h 48m
Delta
sáb. 4/259:15 am
SYD
- STL
2 stops26h 29m
Delta
Deal found 2/27![Delta logo]()
$1,179
This United Airlines deal was found by Cheapflights users on 2/28. 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.
jue. 6/256:00 am
STL
- BNE
2 stops57h 30m
United Airlines
dom. 7/510:30 am
BNE
- STL
2 stops37h 11m
United Airlines
Deal found 2/28![United Airlines logo]()
$1,101
This Expedia deal was found by Cheapflights users on 2/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/286:38 am
STL
- AVV
2 stops48h 12m
Multiple Airlines
mar. 4/74:40 pm
AVV
- STL
2 stops39h 41m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$1,483
This United Airlines deal was found by Cheapflights users on 2/27. 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.
vie. 4/34:49 pm
STL
- MEL
2 stops24h 26m
United Airlines
dom. 4/1910:55 am
MEL
- STL
2 stops24h 59m
United Airlines
Deal found 2/27![United Airlines logo]()
$1,128
This oojo deal was found by Cheapflights users on 3/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/156:21 am
STL
- CBR
2 stops38h 49m
Qantas Airways
mié. 4/226:05 am
CBR
- STL
2 stops28h 25m
Qantas Airways
Deal found 3/1![Qantas Airways logo]()
$1,368
This United Airlines deal was found by Cheapflights users on 2/27. 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.
mar. 4/143:15 pm
STL
- MEL
2 stops26h 00m
United Airlines
mar. 4/2110:55 am
MEL
- STL
2 stops24h 59m
United Airlines
Deal found 2/27![United Airlines logo]()
$1,128
This Qantas Airways deal was found by Cheapflights users on 2/27. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/253:38 pm
STL
- HBA
2 stops30h 32m
Qantas Airways
mié. 4/296:00 am
HBA
- STL
2 stops28h 30m
Qantas Airways
Deal found 2/27![Qantas Airways logo]()
$1,381
This Air Canada deal was found by Cheapflights users on 3/4. 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.
vie. 5/222:20 pm
STL
- AVV
3 stops39h 00m
Multiple Airlines
mié. 6/38:55 pm
AVV
- STL
3 stops54h 11m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$1,533
This Gotogate deal was found by Cheapflights users on 3/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/152:40 pm
STL
- CBR
3 stops29h 10m
Air Canada
mié. 4/226:20 am
CBR
- STL
3 stops25h 36m
Air Canada
Deal found 3/1![Air Canada logo]()
$1,814
This United Airlines deal was found by Cheapflights users on 3/3. 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. 7/312:57 pm
STL
- MEL
2 stops25h 33m
United Airlines
vie. 8/710:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 3/3![United Airlines logo]()
$1,128
This oojo deal was found by Cheapflights users on 2/27. 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.
lun. 5/46:21 am
STL
- CNS
2 stops46h 09m
Qantas Airways
dom. 8/95:00 pm
CNS
- STL
2 stops45h 08m
Qantas Airways
Deal found 2/27![Qantas Airways logo]()
$1,385
This Sembo deal was found by Cheapflights users on 2/27. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/143:50 pm
STL
- PER
2 stops61h 45m
Multiple Airlines
mar. 4/213:40 pm
PER
- STL
2 stops45h 19m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$1,569
This United Airlines deal was found by Cheapflights users on 3/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/296:05 pm
STL
- MEL
2 stops46h 25m
United Airlines
mié. 4/810:55 am
MEL
- STL
1 stop22h 29m
United Airlines
Deal found 3/1![United Airlines logo]()
$1,143
This Qantas Airways deal was found by Cheapflights users on 2/27. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/276:21 am
STL
- CNS
2 stops41h 39m
Qantas Airways
dom. 7/2612:35 pm
CNS
- STL
2 stops50h 24m
Qantas Airways
Deal found 2/27![Qantas Airways logo]()
$1,428
This Ovago deal was found by Cheapflights users on 3/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/154:49 pm
STL
- CBR
3 stops26h 01m
Multiple Airlines
mié. 4/226:10 am
CBR
- STL
2 stops27h 14m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$1,664
This United Airlines deal was found by Cheapflights users on 2/28. 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.
dom. 3/296:05 pm
STL
- MEL
2 stops46h 25m
United Airlines
jue. 4/910:55 am
MEL
- STL
1 stop22h 29m
United Airlines
Deal found 2/28![United Airlines logo]()
$1,143
This Qantas Airways deal was found by Cheapflights users on 2/27. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/266:21 am
STL
- CNS
2 stops46h 09m
Qantas Airways
jue. 7/3012:35 pm
CNS
- STL
2 stops50h 24m
Qantas Airways
Deal found 2/27![Qantas Airways logo]()
$1,428
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/144:05 pm
STL
- PER
3 stops58h 40m
Air Canada
mar. 4/2111:55 pm
PER
- STL
3 stops52h 30m
Air Canada
Deal found 2/27![Air Canada logo]()
$2,125
This Orbitz deal was found by Cheapflights users on 2/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/14:13 pm
STL
- AVV
2 stops31h 52m
Multiple Airlines
sáb. 4/46:00 am
AVV
- STL
2 stops29h 42m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$1,674
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated marzo 4, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated marzo 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 3/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/42:45 pm
STL
- SYD
2 stops25h 30m
United Airlines
mar. 3/102:00 pm
SYD
- STL
2 stops22h 41m
United Airlines
Deal found 3/1![United Airlines logo]()
$1,134
This oojo deal was found by Cheapflights users on 3/3. 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. 3/711:46 am
STL
- SYD
1 stop26h 09m
Qantas Airways
sáb. 3/143:35 pm
SYD
- STL
2 stops24h 23m
Qantas Airways
Deal found 3/3![Qantas Airways logo]()
$1,091
This American Airlines deal was found by Cheapflights users on 3/3. 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.
jue. 3/122:31 pm
STL
- MEL
2 stops26h 59m
American Airlines
sáb. 3/2112:00 pm
MEL
- STL
1 stop27h 58m
American Airlines
Deal found 3/3![American Airlines logo]()
$1,117
This oojo deal was found by Cheapflights users on 3/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/306:38 am
STL
- MEL
1 stop32h 07m
Qantas Airways
mié. 4/89:45 am
MEL
- STL
1 stop29h 12m
Qantas Airways
Deal found 3/2![Qantas Airways logo]()
$1,112
This American Airlines deal was found by Cheapflights users on 2/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/37:00 am
STL
- MEL
1 stop31h 00m
American Airlines
dom. 4/199:45 am
MEL
- STL
1 stop29h 12m
American Airlines
Deal found 2/28![American Airlines logo]()
$1,113
This United Airlines deal was found by Cheapflights users on 3/2. 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.
vie. 4/34:49 pm
STL
- MEL
2 stops23h 41m
United Airlines
dom. 4/1910:55 am
MEL
- STL
2 stops24h 59m
United Airlines
Deal found 3/2![United Airlines logo]()
$1,128
This Air Canada deal was found by Cheapflights users on 2/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/132:40 pm
STL
- BNE
2 stops25h 25m
Multiple Airlines
lun. 4/207:30 pm
BNE
- STL
3 stops58h 55m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$977
This American Airlines deal was found by Cheapflights users on 2/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/133:38 pm
STL
- BNE
2 stops22h 22m
American Airlines
lun. 4/208:35 pm
BNE
- STL
2 stops26h 49m
American Airlines
Deal found 2/27![American Airlines logo]()
$1,044
This Booking.com deal was found by Cheapflights users on 2/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/132:40 pm
STL
- BNE
2 stops49h 25m
Air Canada
lun. 4/2010:00 am
BNE
- STL
2 stops25h 54m
Air Canada
Deal found 2/27![Air Canada logo]()
$1,048
This Delta deal was found by Cheapflights users on 2/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/131:02 pm
STL
- SYD
2 stops26h 48m
Delta
lun. 4/209:15 am
SYD
- STL
2 stops30h 10m
Delta
Deal found 2/27![Delta logo]()
$1,138
This oojo deal was found by Cheapflights users on 3/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/156:21 am
STL
- MEL
1 stop33h 24m
Qantas Airways
mié. 4/221:35 pm
MEL
- STL
1 stop20h 55m
Qantas Airways
Deal found 3/1![Qantas Airways logo]()
$1,121
This oojo deal was found by Cheapflights users on 2/27. 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.
dom. 4/196:21 am
STL
- SYD
2 stops35h 59m
Qantas Airways
sáb. 4/2512:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 2/27![Qantas Airways logo]()
$1,097
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 marzo 4, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated marzo 4, 2026.
This Air Canada deal was found by Cheapflights users on 3/3. 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.
vie. 5/222:20 pm
STL
- BNE
2 stops25h 45m
Air Canada
Deal found 3/3![Air Canada logo]()
$511
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/228:08 pm
STL
- BNE
3 stops47h 32m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$516
This Kiwi.com deal was found by Cheapflights users on 3/3. 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. 5/274:44 pm
STL
- SYD
3 stops52h 06m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$527
This Kiwi.com deal was found by Cheapflights users on 3/3. 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. 4/188:17 pm
STL
- MEL
3 stops49h 08m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$536
This Air Canada deal was found by Cheapflights users on 3/3. 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. 4/184:05 pm
STL
- AVV
3 stops55h 05m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$537
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
lun. 8/3110:55 am
STL
- MEL
3 stops34h 30m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$539
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
lun. 3/308:12 pm
STL
- MEL
3 stops48h 48m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
lun. 8/2410:55 am
STL
- MEL
3 stops34h 30m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$549
This Travelocity deal was found by Cheapflights users on 3/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/237:05 am
STL
- MEL
3 stops37h 30m
Air Canada
Deal found 3/3![Air Canada logo]()
$551
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
mié. 8/268:08 pm
STL
- MEL
3 stops48h 52m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
mié. 8/58:08 pm
STL
- SYD
3 stops48h 42m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$572
This Ovago deal was found by Cheapflights users on 3/3. 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.
sáb. 4/184:05 pm
STL
- MEL
2 stops52h 00m
Singapore Airlines
Deal found 3/3![Singapore Airlines logo]()
$576
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 marzo 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $889 (Air Canada) |
One-way from | $511 (Air Canada) |
Popular in | December |
Cheapest in | August |
Average price | $1,299 |
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 marzo 4, 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
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
dom. 5/24
7:23 pm-6:30 am
1 stop20h 07m
Brisbane
vie. 6/5
10:30 am-6:17 pm
1 stop22h 47m
$1,065
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
vie. 5/22
7:23 pm-6:30 am
1 stop20h 07m
Brisbane
mié. 6/3
10:30 am-6:17 pm
1 stop22h 47m
$1,065
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
sáb. 5/23
5:41 pm-6:30 am
2 stops45h 49m
Brisbane
vie. 6/12
10:30 am-9:16 pm
2 stops25h 46m
$1,085
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
jue. 6/25
6:00 am-6:30 am
2 stops57h 30m
Brisbane
dom. 7/5
10:30 am-8:41 am
2 stops37h 11m
$1,101
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
vie. 4/3
4:49 pm-9:15 am
2 stops24h 26m
Melbourne
dom. 4/19
10:55 am-8:54 pm
2 stops24h 59m
$1,128
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
mar. 4/14
3:15 pm-8:15 am
2 stops26h 00m
Melbourne
mar. 4/21
10:55 am-8:54 pm
2 stops24h 59m
$1,128
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
vie. 7/31
2:57 pm-7:30 am
2 stops25h 33m
Melbourne
vie. 8/7
10:55 am-6:17 pm
1 stop22h 22m
$1,128
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
lun. 4/13
1:02 pm-6:50 am
2 stops26h 48m
Sydney Kingsford Smith
lun. 4/20
9:15 am-12:25 am
2 stops30h 10m
$1,138
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
dom. 3/29
6:05 pm-8:30 am
2 stops46h 25m
Melbourne
mié. 4/8
10:55 am-6:24 pm
1 stop22h 29m
$1,143
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
dom. 3/29
6:05 pm-8:30 am
2 stops46h 25m
Melbourne
jue. 4/9
10:55 am-6:24 pm
1 stop22h 29m
$1,143
Showing 1-10 of 56 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-SYD
STL-MEL
STL-AVV
STL-CBR
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-SYD
STL-MEL
STL-AVV
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 $653). 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 marzo 4, 2026.
Read reviews from past customers who have flown Fiji Airways, Qantas Airways, and United 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.
Food
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.5
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Food
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.5
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Food
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.5
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Food
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.5
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Food
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.5
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Food
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.5
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - 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
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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 marzo 4, 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 marzo 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$608 | Average$1,250 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$975 | Average$1,325 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,029 | Average$1,430 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,078 | Average$1,386 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,132 | Average$1,268 | FlexibilityNo cancel fee | On-time74% |