$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 29 — May 61
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 30, 2026.
Explore the most affordable flight options available from St. Louis to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 30, 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 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 3/26. 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 9/812:10 pm
STL
- BNE
2 stops27h 55m
Air Canada
Mon 9/2810:00 am
BNE
- STL
2 stops25h 00m
Air Canada
Deal found 3/26![Air Canada logo]()
$1,155
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 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:10 pm
STL
- SYD
2 stops28h 10m
Air Canada
Fri 11/1311:20 am
SYD
- STL
2 stops45h 10m
Air Canada
Deal found 3/26![Air Canada logo]()
$1,157
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.
Sat 6/274:45 pm
STL
- BNE
2 stops23h 20m
Air Canada
Sun 7/510:00 am
BNE
- STL
2 stops47h 42m
Air Canada
Deal found 3/26![Air Canada logo]()
$1,161
This Justfly.com 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 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
Wed 11/1811:20 am
SYD
- STL
2 stops45h 10m
Air Canada
Deal found 3/28![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
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.
Mon 9/75:10 am
STL
- SYD
2 stops35h 10m
Air Canada
Mon 9/149:20 am
SYD
- STL
2 stops29h 30m
Air Canada
Deal found 3/27![Air Canada logo]()
$1,177
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 30, 2026.
Discover carefully curated flight deals from St. Louis to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 30, 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 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:10 pm
STL
- BNE
2 stops51h 55m
Multiple Airlines
Mon 9/288:40 pm
BNE
- STL
3 stops38h 20m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$1,248
This oojo deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/912:27 pm
STL
- MEL
1 stop25h 33m
Qantas Airways
Sat 5/161:35 pm
MEL
- STL
1 stop20h 55m
Qantas Airways
Deal found 3/25![Qantas Airways logo]()
$1,418
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 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.
Sat 5/167:05 pm
STL
- SYD
2 stops44h 45m
Delta
Sun 8/169:15 am
SYD
- STL
2 stops28h 46m
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.
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 American Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:33 pm
STL
- SYD
2 stops24h 32m
American Airlines
Wed 10/76:50 pm
SYD
- STL
2 stops21h 27m
American Airlines
Deal found 3/25![American Airlines logo]()
$1,608
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 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.
Sat 6/274:45 pm
STL
- BNE
2 stops23h 20m
Air Canada
Sun 7/510:00 am
BNE
- STL
2 stops47h 42m
Air Canada
Deal found 3/26![Air Canada logo]()
$1,161
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/101:05 pm
STL
- BNE
2 stops27h 00m
Air Canada
Sun 5/1710:00 am
BNE
- STL
2 stops49h 25m
Air Canada
Deal found 3/26![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
Sat 8/1510:55 am
MEL
- STL
1 stop22h 29m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
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
Wed 8/1210:55 am
MEL
- STL
1 stop22h 29m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,461
This American Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/132:38 pm
STL
- SYD
2 stops25h 52m
American Airlines
Mon 7/209:10 am
SYD
- STL
2 stops25h 41m
American Airlines
Deal found 3/25![American Airlines logo]()
$1,608
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 FlightHub deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/294:48 pm
STL
- BNE
2 stops23h 17m
Air Canada
Mon 8/1010:00 am
BNE
- STL
2 stops43h 02m
Air Canada
Deal found 3/25![Air Canada logo]()
$1,286
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:21 am
STL
- CBR
2 stops38h 49m
Qantas Airways
Thu 4/306:05 am
CBR
- STL
2 stops32h 52m
Qantas Airways
Deal found 3/26![Qantas Airways logo]()
$1,725
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 oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/77:23 pm
STL
- HBA
2 stops32h 27m
Multiple Airlines
Sat 6/139:20 am
HBA
- STL
2 stops53h 36m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$1,718
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 United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:10 am
STL
- MEL
2 stops29h 20m
United Airlines
Wed 6/1010:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 3/25![United Airlines logo]()
$1,484
This Qatar Airways deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/129:46 am
STL
- PER
2 stops43h 49m
Qatar Airways
Wed 9/1610:45 pm
PER
- STL
2 stops37h 35m
Qatar Airways
Deal found 3/25![Qatar Airways logo]()
$2,069
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.
Wed 5/134:44 pm
STL
- SYD
2 stops23h 16m
United Airlines
Wed 5/2010:20 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 3/26. 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 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 Qantas Airways deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/176:35 am
STL
- PER
2 stops40h 30m
Qantas Airways
Sat 7/46:15 am
PER
- STL
2 stops25h 19m
Qantas Airways
Deal found 3/25![Qantas Airways logo]()
$1,927
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 New Zealand deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/271:13 pm
STL
- MEL
3 stops30h 42m
Multiple Airlines
Wed 6/108:35 am
MEL
- STL
3 stops30h 22m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$1,739
This Air Canada deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:10 pm
STL
- SYD
2 stops28h 10m
Air Canada
Wed 10/710:20 am
SYD
- STL
3 stops48h 21m
Air Canada
Deal found 3/25![Air Canada logo]()
$1,581
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated March 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated March 30, 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 Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:21 am
STL
- SYD
2 stops38h 29m
Multiple Airlines
Wed 4/151:15 pm
SYD
- STL
2 stops25h 42m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$1,526
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 oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:21 am
STL
- SYD
2 stops40h 29m
Qantas Airways
Wed 4/2912:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 3/26![Qantas Airways logo]()
$1,387
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.
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 3/30![Air Canada logo]()
$1,482
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1910:50 am
STL
- SYD
2 stops29h 00m
Delta
Wed 4/299:15 am
SYD
- STL
2 stops23h 29m
Delta
Deal found 3/26![Delta logo]()
$1,492
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 3/29. 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.
Sun 4/264:49 pm
STL
- SYD
2 stops23h 11m
United Airlines
Sun 5/310:20 am
SYD
- STL
1 stop23h 02m
United Airlines
Deal found 3/29![United Airlines logo]()
$1,486
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
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 30, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated March 30, 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 3/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:08 pm
STL
- SYD
3 stops48h 42m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$561
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 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:33 pm
STL
- MEL
3 stops53h 27m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$569
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 Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:41 am
STL
- SYD
3 stops38h 09m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$618
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:20 pm
STL
- SYD
3 stops50h 30m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$634
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:20 pm
STL
- SYD
3 stops50h 30m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$635
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 30, 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 30, 2026.
Use the filters below to find and compare flights from St. Louis to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
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-6:42 pm
2 stops47h 42m
$1,161
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Sun 5/10
1:05 pm-7:05 am
2 stops27h 00m
Brisbane
Sun 5/17
10:00 am-8:25 pm
2 stops49h 25m
$1,226
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. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Tue 9/8
12:10 pm-7:05 am
2 stops51h 55m
Brisbane
Mon 9/28
8:40 pm-8:00 pm
3 stops38h 20m
$1,248
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Wed 7/29
4:48 pm-7:05 am
2 stops23h 17m
Brisbane
Mon 8/10
10:00 am-2:02 pm
2 stops43h 02m
$1,286
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Sat 5/9
12:27 pm-5:00 am
1 stop25h 33m
Melbourne
Sat 5/16
1:35 pm-7:30 pm
1 stop20h 55m
$1,418
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
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 5/19
4:06 pm-8:15 am
2 stops25h 09m
Melbourne
Sat 8/15
10:55 am-6:24 pm
1 stop22h 29m
$1,461
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 5/19
4:06 pm-8:15 am
2 stops25h 09m
Melbourne
Wed 8/12
10:55 am-6:24 pm
1 stop22h 29m
$1,461
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-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-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 $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 30, 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.
Boarding
8.2
Food
7.6
Comfort
8.1
Overall
8.1
Crew
8.5
Entertainment
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.6
Comfort
8.1
Overall
8.1
Crew
8.5
Entertainment
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.6
Comfort
8.1
Overall
8.1
Crew
8.5
Entertainment
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.6
Comfort
8.1
Overall
8.1
Crew
8.5
Entertainment
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.6
Comfort
8.1
Overall
8.1
Crew
8.5
Entertainment
7.5
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.6
Comfort
8.1
Overall
8.1
Crew
8.5
Entertainment
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 March 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Australia regions
Consider these flights traveling to Australia regions.
Top 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 30, 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% |