$487+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Apr 30 — May 71
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 March 31, 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 March 31, 2026.
This Expedia deal was found by Cheapflights users on 3/27. 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.
Tue 5/121:05 pm
STL
- BNE
2 stops27h 00m
Air Canada
Tue 5/1910:15 am
BNE
- STL
2 stops49h 10m
Air Canada
Deal found 3/27![Air Canada logo]()
$961
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.
Mon 6/11:05 pm
STL
- BNE
2 stops27h 00m
Air Canada
Mon 6/1510:00 am
BNE
- STL
2 stops49h 43m
Air Canada
Deal found 3/29![Air Canada logo]()
$985
This FlightHub deal was found by Cheapflights users on 3/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:30 pm
STL
- BNE
2 stops23h 35m
Air Canada
Mon 6/810:00 am
BNE
- STL
2 stops49h 43m
Air Canada
Deal found 3/26![Air Canada logo]()
$987
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.
Sat 5/301:05 pm
STL
- BNE
2 stops51h 00m
Air Canada
Thu 6/1110:15 am
BNE
- STL
2 stops49h 28m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,023
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.
Tue 8/45:18 pm
STL
- MEL
2 stops35h 02m
Multiple Airlines
Thu 8/137:30 am
MEL
- STL
2 stops29h 30m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,140
This FlightHub deal was found by Cheapflights users on 3/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:10 am
STL
- SYD
2 stops35h 10m
Air Canada
Fri 9/189:20 am
SYD
- STL
2 stops42h 20m
Air Canada
Deal found 3/26![Air Canada logo]()
$1,147
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.
Wed 9/2312:10 pm
STL
- SYD
2 stops28h 10m
Air Canada
Wed 10/710:20 am
SYD
- STL
2 stops48h 21m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,151
This FlightHub deal was found by Cheapflights users on 3/27. 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.
Tue 5/124:06 pm
STL
- SYD
2 stops24h 14m
Air Canada
Sun 5/249:20 am
SYD
- STL
2 stops26h 23m
Air Canada
Deal found 3/27![Air Canada logo]()
$1,155
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.
Sat 11/74:15 pm
STL
- SYD
2 stops48h 20m
Air Canada
Sat 11/1411:20 am
SYD
- STL
2 stops45h 10m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,161
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.
Tue 9/812:10 pm
STL
- BNE
2 stops27h 55m
Air Canada
Mon 9/2810:00 am
BNE
- STL
2 stops43h 00m
Air Canada
Deal found 3/31![Air Canada logo]()
$1,163
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.
Tue 10/135:20 am
STL
- SYD
2 stops35h 00m
Air Canada
Fri 11/1311:20 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.
Sun 10/45:20 am
STL
- SYD
2 stops35h 00m
Air Canada
Sun 10/1810:20 am
SYD
- STL
2 stops29h 23m
Air Canada
Deal found 3/29![Air Canada logo]()
$1,169
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 March 31, 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 March 31, 2026.
This FlightHub deal was found by Cheapflights users on 3/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:30 pm
STL
- BNE
2 stops23h 35m
Air Canada
Mon 6/810:00 am
BNE
- STL
2 stops49h 43m
Air Canada
Deal found 3/26![Air Canada logo]()
$987
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.
Tue 9/18:55 am
STL
- AVV
3 stops38h 15m
Multiple Airlines
Tue 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.
Tue 5/193:20 pm
STL
- MEL
2 stops25h 55m
United Airlines
Tue 8/1110:55 am
MEL
- STL
2 stops23h 36m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
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.
Sun 9/66:41 am
STL
- PER
2 stops46h 54m
Qatar Airways
Fri 9/1110:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 3/30![Qatar Airways logo]()
$1,548
This Qantas Airways 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:21 am
STL
- SYD
1 stop33h 44m
Qantas Airways
Sun 5/312:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 3/30![Qantas Airways logo]()
$1,567
This Delta deal was found by Cheapflights users on 3/27. 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.
Sun 4/199:59 am
STL
- SYD
2 stops29h 51m
Delta
Sat 4/259:15 am
SYD
- STL
2 stops20h 46m
Delta
Deal found 3/27![Delta logo]()
$1,914
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.
Sun 5/37:05 am
STL
- CBR
2 stops36h 45m
Air New Zealand
Sun 5/176:40 pm
CBR
- STL
3 stops41h 03m
Air New Zealand
Deal found 3/29![Air New Zealand logo]()
$2,228
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.
Sat 6/274:45 pm
STL
- BNE
2 stops23h 20m
Air Canada
Sun 7/510:00 am
BNE
- STL
2 stops52h 57m
Air Canada
Deal found 3/29![Air Canada logo]()
$1,175
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.
Wed 5/131:05 pm
STL
- BNE
2 stops27h 00m
Air Canada
Wed 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.
Tue 5/194:06 pm
STL
- MEL
2 stops25h 09m
United Airlines
Sun 8/1610:55 am
MEL
- STL
1 stop22h 29m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
This Qantas Airways 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:21 am
STL
- SYD
1 stop33h 44m
Qantas Airways
Wed 4/2912:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 3/30![Qantas Airways logo]()
$1,567
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.
Wed 9/166:41 am
STL
- PER
2 stops46h 54m
Qatar Airways
Mon 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.
Wed 5/204:44 pm
STL
- MEL
2 stops23h 46m
United Airlines
Fri 8/1410:55 am
MEL
- STL
2 stops24h 44m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
This Etihad Airways deal was found by Cheapflights users on 3/27. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/119:10 am
STL
- MEL
2 stops39h 40m
Multiple Airlines
Mon 5/185:20 pm
MEL
- STL
2 stops37h 40m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,693
This KAYAK deal was found by Cheapflights users on 3/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:21 am
STL
- BNE
1 stop31h 39m
Qantas Airways
Mon 6/88:35 pm
BNE
- STL
2 stops27h 16m
Qantas Airways
Deal found 3/26![Qantas Airways logo]()
$1,598
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.
Tue 4/284:49 pm
STL
- MEL
2 stops24h 26m
United Airlines
Tue 5/510:55 am
MEL
- STL
2 stops27h 01m
United Airlines
Deal found 3/29![United Airlines logo]()
$1,484
This Air Canada deal was found by Cheapflights users on 3/26. 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.
Sat 5/167:05 am
STL
- MEL
3 stops37h 00m
Air Canada
Wed 5/208:30 pm
MEL
- STL
3 stops38h 39m
Air Canada
Deal found 3/26![Air Canada logo]()
$1,550
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.
Tue 9/156:41 am
STL
- PER
2 stops46h 54m
Qatar Airways
Sat 10/1710:45 pm
PER
- STL
2 stops38h 14m
Qatar Airways
Deal found 3/31![Qatar Airways logo]()
$1,706
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.
Wed 5/136:21 am
STL
- CNS
2 stops45h 04m
Multiple Airlines
Wed 5/2010:15 am
CNS
- STL
2 stops28h 44m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,725
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:30 am
STL
- SYD
1 stop31h 25m
United Airlines
Mon 5/1810:20 am
SYD
- STL
1 stop23h 02m
United Airlines
Deal found 3/28![United Airlines logo]()
$1,486
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.
Tue 8/48:55 am
STL
- AVV
3 stops38h 15m
Multiple Airlines
Thu 8/138:55 pm
AVV
- STL
3 stops38h 12m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,726
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.
Sun 5/36:21 am
STL
- CBR
2 stops36h 49m
Qantas Airways
Sun 5/176:55 pm
CBR
- STL
2 stops44h 04m
Qantas Airways
Deal found 3/29![Qantas Airways logo]()
$1,761
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.
Sat 6/276:35 am
STL
- AVV
2 stops49h 15m
Multiple Airlines
Sat 7/46:00 am
AVV
- STL
2 stops32h 59m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,739
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.
Tue 9/18:35 am
STL
- MEL
2 stops32h 40m
United Airlines
Tue 9/1510:55 am
MEL
- STL
1 stop22h 29m
United Airlines
Deal found 3/31![United Airlines logo]()
$1,603
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.
Mon 5/43:38 pm
STL
- CNS
2 stops29h 12m
Qantas Airways
Sun 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 3/29. 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.
Mon 7/66:01 am
STL
- SYD
2 stops33h 54m
United Airlines
Fri 7/1710:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 3/29![United Airlines logo]()
$1,606
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/311:15 am
STL
- CBR
3 stops35h 05m
Multiple Airlines
Sun 5/177:05 am
CBR
- STL
3 stops24h 52m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,811
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.
Tue 9/88:30 pm
STL
- BNE
2 stops43h 00m
United Airlines
Mon 9/2810:30 am
BNE
- STL
1 stop22h 23m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,609
This Qatar Airways 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:33 pm
STL
- CBR
3 stops48h 47m
Qatar Airways
Wed 8/1912:10 pm
CBR
- STL
3 stops38h 59m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$2,359
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.
Tue 8/45:18 pm
STL
- AVV
2 stops31h 47m
Qantas Airways
Thu 8/1310:30 am
AVV
- STL
2 stops27h 38m
Qantas Airways
Deal found 3/30![Qantas Airways logo]()
$1,965
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated March 31, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated March 31, 2026 and is based on user searches.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:29 am
STL
- MEL
2 stops34h 21m
Delta
Sun 4/1910:00 am
MEL
- STL
2 stops29h 25m
Delta
Deal found 3/29![Delta logo]()
$1,491
This FlightHub deal was found by Cheapflights users on 3/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:30 pm
STL
- BNE
2 stops23h 35m
Air Canada
Mon 6/810:00 am
BNE
- STL
2 stops49h 43m
Air Canada
Deal found 3/26![Air Canada logo]()
$987
This Air Canada deal was found by Cheapflights users on 3/26. 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 4/144:30 pm
STL
- BNE
2 stops23h 35m
Multiple Airlines
Mon 6/88:45 pm
BNE
- STL
3 stops54h 21m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$1,265
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.
Sun 4/194:05 pm
STL
- SYD
2 stops48h 15m
Air Canada
Sat 4/259:20 am
SYD
- STL
2 stops42h 48m
Air Canada
Deal found 3/29![Air Canada logo]()
$1,482
This Flightnetwork deal was found by Cheapflights users on 3/27. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/264:05 pm
STL
- SYD
2 stops48h 15m
Air Canada
Sun 5/109:20 am
SYD
- STL
2 stops41h 46m
Air Canada
Deal found 3/27![Air Canada logo]()
$1,365
This lastminute.com deal was found by Cheapflights users on 3/27. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:21 am
STL
- SYD
1 stop33h 44m
Qantas Airways
Sun 5/109:10 am
SYD
- STL
1 stop29h 49m
Qantas Airways
Deal found 3/27![Qantas Airways logo]()
$1,445
This United Airlines deal was found by Cheapflights users on 3/27. 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 4/267:05 pm
STL
- SYD
1 stop20h 50m
United Airlines
Sun 5/109:30 am
SYD
- STL
2 stops23h 42m
United Airlines
Deal found 3/27![United Airlines logo]()
$1,468
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.
Sun 4/267:05 pm
STL
- SYD
1 stop20h 50m
United Airlines
Tue 5/510:20 am
SYD
- STL
1 stop23h 02m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,486
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.
Mon 4/274:05 pm
STL
- SYD
2 stops48h 15m
Air Canada
Tue 5/59:20 am
SYD
- STL
2 stops26h 23m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,466
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:05 pm
STL
- BNE
2 stops48h 00m
Air Canada
Tue 5/510:00 am
BNE
- STL
2 stops49h 25m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,300
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.
Tue 4/284:49 pm
STL
- MEL
2 stops24h 26m
United Airlines
Tue 5/510:55 am
MEL
- STL
2 stops27h 01m
United Airlines
Deal found 3/29![United Airlines logo]()
$1,484
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.
Thu 4/304:05 pm
STL
- SYD
2 stops48h 15m
Air Canada
Thu 5/79:20 am
SYD
- STL
2 stops41h 46m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,350
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 March 31, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated March 31, 2026.
This Trip.com deal was found by Cheapflights users on 3/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/269:55 pm
STL
- SYD
3 stops46h 55m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$487
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.
Thu 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 3/30. 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.
Fri 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.
Mon 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.
Sat 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.
Thu 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.
Tue 5/196:51 pm
STL
- MEL
3 stops50h 14m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$578
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Sun 4/264:05 pm
STL
- SYD
2 stops48h 15m
Air Canada
Deal found 3/27![Air Canada logo]()
$639
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.
Sun 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.
Sat 5/27:00 am
STL
- CBR
3 stops38h 25m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$655
This BusinessClass deal was found by Cheapflights users on 3/27. 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.
Sun 4/264:05 pm
STL
- SYD
1 stop48h 15m
Asiana Airlines
Deal found 3/27![Asiana Airlines logo]()
$679
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.
Wed 5/136:21 am
STL
- AVV
2 stops49h 29m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$709
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 March 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $961 (Expedia) |
One-way from | $487 (Trip.com) |
Popular in | December |
Cheapest in | March |
Average price | $1,254 |
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 March 31, 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
Tue 4/14
4:30 pm-7:05 am
2 stops23h 35m
Brisbane
Mon 6/8
10:00 am-8:43 pm
2 stops49h 43m
$987
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Sat 6/27
4:45 pm-7:05 am
2 stops23h 20m
Brisbane
Sun 7/5
10:00 am-11:57 pm
2 stops52h 57m
$1,175
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Wed 5/13
1:05 pm-7:05 am
2 stops27h 00m
Brisbane
Wed 5/20
10:00 am-12:06 pm
2 stops41h 06m
$1,226
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
Tue 9/1
8:55 am-2:10 pm
3 stops38h 15m
Melbourne Avalon
Tue 9/15
8:55 pm-2:00 pm
3 stops56h 05m
$1,371
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 5/19
3:20 pm-8:15 am
2 stops25h 55m
Melbourne
Tue 8/11
10:55 am-7:31 pm
2 stops23h 36m
$1,461
Quickest round-trip
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 5/19
4:06 pm-8:15 am
2 stops25h 09m
Melbourne
Sun 8/16
10:55 am-6:24 pm
1 stop22h 29m
$1,461
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Wed 5/20
4:44 pm-7:30 am
2 stops23h 46m
Melbourne
Fri 8/14
10:55 am-8:39 pm
2 stops24h 44m
$1,461
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 4/28
4:49 pm-8:15 am
2 stops24h 26m
Melbourne
Tue 5/5
10:55 am-10:56 pm
2 stops27h 01m
$1,484
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 5/4
8:30 am-6:55 am
1 stop31h 25m
Sydney Kingsford Smith
Mon 5/18
10:20 am-6:22 pm
1 stop23h 02m
$1,486
St. LouisPerth
STL - PER
STLPER
Lambert-St Louis
Sun 9/6
6:41 am-6:35 pm
2 stops46h 54m
Perth
Fri 9/11
10:45 pm-11:59 pm
2 stops38h 14m
$1,548
Showing 1-10 of 49 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-SYD
STL-MEL
STL-AVV
STL-CBR
STL-BNE
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-SYD
STL-MEL
STL-AVV
STL-CBR
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 March 31, 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.
Entertainment
7.5
Boarding
8.2
Food
7.6
Crew
8.5
Overall
8.1
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Boarding
8.2
Food
7.6
Crew
8.5
Overall
8.1
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Boarding
8.2
Food
7.6
Crew
8.5
Overall
8.1
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Boarding
8.2
Food
7.6
Crew
8.5
Overall
8.1
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Boarding
8.2
Food
7.6
Crew
8.5
Overall
8.1
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Boarding
8.2
Food
7.6
Crew
8.5
Overall
8.1
Comfort
8.1
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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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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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 March 31, 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 March 31, 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% |