$616+ Cheap flights from St. Louis (STL) to Australia
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Aug 23 — Aug 301
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Australia with Cheapflights
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Cheapest flights from St. Louis to AustraliaExplore the most affordable flight options available from St. Louis to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
Explore the most affordable flight options available from St. Louis to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
This FlightHub deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:10 pm
STL
- BNE
2 stops51h 55m
Air Canada
Mon 8/3110:00 am
BNE
- STL
2 stops41h 40m
Air Canada
Deal found 7/21![Air Canada logo]()
$1,082
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 11/96:02 am
STL
- SYD
1 stop33h 58m
Qantas Airways
Thu 11/195:50 pm
SYD
- STL
2 stops41h 25m
Qantas Airways
Deal found 7/23![Qantas Airways logo]()
$1,089
This Air Canada deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:05 pm
STL
- BNE
2 stops48h 40m
Air Canada
Wed 11/1810:45 am
BNE
- STL
2 stops44h 41m
Air Canada
Deal found 7/21![Air Canada logo]()
$1,098
This oojo deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:10 pm
STL
- MEL
1 stop41h 50m
Qantas Airways
Tue 11/312:00 pm
MEL
- STL
1 stop22h 54m
Qantas Airways
Deal found 7/21![Qantas Airways logo]()
$1,108
This oojo deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:40 am
STL
- MEL
1 stop31h 20m
Qantas Airways
Wed 11/1110:45 pm
MEL
- STL
1 stop42h 00m
Qantas Airways
Deal found 7/21![Qantas Airways logo]()
$1,111
This Bravofly deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
STL
- SYD
2 stops37h 55m
Qantas Airways
Mon 9/2112:00 pm
SYD
- STL
1 stop21h 04m
Qantas Airways
Deal found 7/21![Qantas Airways logo]()
$1,111
This Air Canada deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1112:10 pm
STL
- SYD
2 stops28h 10m
Air Canada
Mon 10/1910:20 am
SYD
- STL
2 stops48h 21m
Air Canada
Deal found 7/23![Air Canada logo]()
$1,112
This Air Canada deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/238:55 am
STL
- SYD
2 stops31h 25m
Air Canada
Wed 10/710:20 am
SYD
- STL
2 stops24h 21m
Air Canada
Deal found 7/22![Air Canada logo]()
$1,116
This oojo deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 10/253:20 pm
STL
- BNE
2 stops26h 00m
Qantas Airways
Wed 11/189:40 am
BNE
- STL
1 stop24h 35m
Qantas Airways
Deal found 7/21![Qantas Airways logo]()
$1,117
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/226:30 am
STL
- MEL
1 stop33h 15m
Qantas Airways
Tue 9/299:45 am
MEL
- STL
1 stop28h 45m
Qantas Airways
Deal found 7/22![Qantas Airways logo]()
$1,120
This Air Canada deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 8/308:55 am
STL
- SYD
2 stops31h 25m
Air Canada
Mon 9/149:20 am
SYD
- STL
2 stops43h 40m
Air Canada
Deal found 7/22![Air Canada logo]()
$1,121
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:47 pm
STL
- MEL
2 stops28h 43m
American Airlines
Wed 11/1110:45 pm
MEL
- STL
2 stops26h 22m
American Airlines
Deal found 7/22![American Airlines logo]()
$1,122
Best flights from St. Louis to AustraliaDiscover carefully curated flight deals from St. Louis to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
Discover carefully curated flight deals from St. Louis to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
This Justfly.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/312:10 pm
STL
- BNE
2 stops51h 55m
Air Canada
Mon 8/3110:00 am
BNE
- STL
2 stops41h 40m
Air Canada
Deal found 7/23![Air Canada logo]()
$1,082
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:48 am
STL
- MEL
2 stops29h 57m
American Airlines
Tue 11/312:00 pm
MEL
- STL
1 stop28h 33m
American Airlines
Deal found 7/24![American Airlines logo]()
$1,122
This Air Canada deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:05 pm
STL
- AVV
3 stops63h 10m
Multiple Airlines
Wed 11/116:00 am
AVV
- STL
3 stops50h 26m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,124
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 10/141:36 pm
STL
- MEL
2 stops26h 54m
United Airlines
Wed 11/412:45 pm
MEL
- STL
1 stop22h 18m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,144
This oojo deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
Wed 9/306:30 am
STL
- BNE
1 stop31h 30m
Qantas Airways
Sat 10/106:30 pm
BNE
- STL
2 stops38h 50m
Qantas Airways
Deal found 7/20![Qantas Airways logo]()
$1,173
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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.
Tue 10/1310:02 am
STL
- SYD
2 stops29h 48m
Delta
Wed 11/1810:40 am
SYD
- STL
2 stops25h 16m
Delta
Deal found 7/19![Delta logo]()
$1,312
This Air Canada deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:40 pm
STL
- AVV
3 stops33h 25m
Multiple Airlines
Tue 11/36:00 am
AVV
- STL
3 stops50h 26m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,124
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/36:37 am
STL
- BNE
1 stop31h 23m
American Airlines
Mon 8/318:35 pm
BNE
- STL
2 stops27h 49m
American Airlines
Deal found 7/20![American Airlines logo]()
$1,141
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:01 am
STL
- SYD
2 stops33h 54m
United Airlines
Wed 8/1210:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Deal found 7/24![United Airlines logo]()
$1,170
This Qantas Airways deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:20 pm
STL
- SYD
1 stop23h 35m
Qantas Airways
Sun 10/257:40 pm
SYD
- STL
2 stops44h 06m
Qantas Airways
Deal found 7/20![Qantas Airways logo]()
$1,224
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/123:13 pm
STL
- SYD
2 stops24h 47m
United Airlines
Sun 8/3010:20 am
SYD
- STL
1 stop22h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$1,187
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:40 am
STL
- MEL
1 stop31h 20m
American Airlines
Wed 11/1110:45 pm
MEL
- STL
2 stops26h 22m
American Airlines
Deal found 7/20![American Airlines logo]()
$1,194
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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.
Tue 10/137:10 am
STL
- SYD
2 stops32h 40m
Delta
Fri 11/1310:40 am
SYD
- STL
2 stops25h 16m
Delta
Deal found 7/19![Delta logo]()
$1,362
This FlightHub deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:39 pm
STL
- SYD
2 stops23h 41m
Air Canada
Fri 11/1311:20 am
SYD
- STL
3 stops41h 46m
Air Canada
Deal found 7/19![Air Canada logo]()
$1,405
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/66:00 am
STL
- BNE
1 stop32h 00m
Qantas Airways
Sun 9/137:30 pm
BNE
- STL
2 stops43h 00m
Qantas Airways
Deal found 7/23![Qantas Airways logo]()
$1,295
This Air Canada deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/222:40 pm
STL
- AVV
3 stops34h 25m
Multiple Airlines
Tue 9/298:55 pm
AVV
- STL
3 stops38h 25m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,309
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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.
Sat 10/104:49 pm
STL
- MEL
2 stops24h 26m
United Airlines
Mon 11/212:45 pm
MEL
- STL
2 stops24h 49m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,194
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:12 am
STL
- MEL
2 stops28h 33m
American Airlines
Tue 10/2710:45 pm
MEL
- STL
2 stops26h 35m
American Airlines
Deal found 7/19![American Airlines logo]()
$1,194
This Justfly.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 10/1312:47 pm
STL
- SYD
1 stop26h 08m
Qantas Airways
Fri 11/139:55 am
SYD
- STL
2 stops30h 47m
Qantas Airways
Deal found 7/19![Qantas Airways logo]()
$1,302
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:05 pm
STL
- MEL
1 stop22h 25m
United Airlines
Wed 11/1112:45 pm
MEL
- STL
1 stop22h 18m
United Airlines
Deal found 7/20![United Airlines logo]()
$1,212
This Air Canada deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:40 pm
STL
- AVV
3 stops33h 25m
Multiple Airlines
Tue 10/276:00 am
AVV
- STL
3 stops49h 26m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$1,441
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/183:13 pm
STL
- MEL
2 stops26h 02m
United Airlines
Mon 8/2410:00 am
MEL
- STL
3 stops68h 38m
United Airlines
Deal found 7/20![United Airlines logo]()
$1,246
This oojo deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:13 pm
STL
- BNE
2 stops27h 17m
Qantas Airways
Mon 8/318:45 am
BNE
- STL
2 stops24h 20m
Qantas Airways
Deal found 7/19![Qantas Airways logo]()
$1,383
This Air Canada deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:40 pm
STL
- MEL
3 stops29h 30m
Multiple Airlines
Tue 10/276:30 am
MEL
- STL
3 stops48h 56m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$1,458
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:08 am
STL
- MEL
1 stop34h 07m
United Airlines
Fri 11/612:45 pm
MEL
- STL
1 stop22h 18m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,250
This Air Canada deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/178:55 am
STL
- BNE
3 stops35h 35m
Multiple Airlines
Mon 8/248:40 pm
BNE
- STL
3 stops38h 44m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$1,463
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:08 am
STL
- MEL
1 stop34h 07m
United Airlines
Sat 10/3111:45 am
MEL
- STL
1 stop22h 18m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,250
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:21 am
STL
- CNS
2 stops32h 44m
American Airlines
Sat 12/126:00 am
CNS
- STL
2 stops29h 27m
American Airlines
Deal found 7/22![American Airlines logo]()
$1,723
This Qantas Airways deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:12 am
STL
- MEL
3 stops28h 33m
Multiple Airlines
Tue 11/36:00 am
MEL
- STL
2 stops25h 04m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,538
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:32 pm
STL
- SYD
2 stops24h 28m
United Airlines
Wed 10/711:20 am
SYD
- STL
1 stop23h 23m
United Airlines
Deal found 7/20![United Airlines logo]()
$1,312
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated July 24, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Sun 8/169:30 am
MEL
- STL
2 stops28h 29m
United Airlines
Deal found 7/24![United Airlines logo]()
$1,180
This FlightHub deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:10 pm
STL
- BNE
2 stops51h 55m
Air Canada
Mon 8/3110:00 am
BNE
- STL
2 stops41h 40m
Air Canada
Deal found 7/21![Air Canada logo]()
$1,082
This oojo deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:13 pm
STL
- BNE
2 stops26h 07m
Qantas Airways
Mon 8/318:00 am
BNE
- STL
2 stops25h 05m
Qantas Airways
Deal found 7/20![Qantas Airways logo]()
$1,128
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/36:37 am
STL
- BNE
1 stop31h 23m
American Airlines
Mon 8/318:35 pm
BNE
- STL
2 stops27h 49m
American Airlines
Deal found 7/20![American Airlines logo]()
$1,141
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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.
Wed 8/56:00 am
STL
- SYD
1 stop34h 30m
Qantas Airways
Wed 8/1212:00 pm
SYD
- STL
1 stop19h 41m
Qantas Airways
Deal found 7/24![Qantas Airways logo]()
$1,163
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:42 am
STL
- SYD
1 stop31h 13m
United Airlines
Sun 8/3010:20 am
SYD
- STL
1 stop22h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$1,187
This oojo deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/186:00 am
STL
- MEL
1 stop33h 45m
Qantas Airways
Mon 8/241:35 pm
MEL
- STL
1 stop19h 30m
Qantas Airways
Deal found 7/20![Qantas Airways logo]()
$1,112
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/2412:55 pm
STL
- SYD
1 stop27h 00m
American Airlines
Mon 11/2311:20 am
SYD
- STL
1 stop29h 25m
American Airlines
Deal found 7/21![American Airlines logo]()
$1,166
This Air Canada deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 8/308:55 am
STL
- SYD
2 stops31h 25m
Air Canada
Mon 9/149:20 am
SYD
- STL
2 stops43h 40m
Air Canada
Deal found 7/22![Air Canada logo]()
$1,121
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 8/3010:16 am
STL
- SYD
1 stop29h 39m
Qantas Airways
Mon 9/149:10 am
SYD
- STL
1 stop29h 20m
Qantas Airways
Deal found 7/22![Qantas Airways logo]()
$1,151
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/303:32 pm
STL
- SYD
2 stops24h 28m
United Airlines
Mon 9/2110:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,162
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/308:42 am
STL
- SYD
1 stop31h 13m
United Airlines
Wed 9/2310:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Deal found 7/21![United Airlines logo]()
$1,170
One-way flights from St. Louis to AustraliaSearch for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:00 am
STL
- SYD
2 stops32h 05m
Qantas Airways
Deal found 7/22![Qantas Airways logo]()
$616
This oojo deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
Wed 10/146:04 am
STL
- MEL
1 stop32h 41m
Qantas Airways
Deal found 7/20![Qantas Airways logo]()
$621
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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.
Wed 8/128:00 am
STL
- SYD
2 stops32h 05m
Qantas Airways
Deal found 7/23![Qantas Airways logo]()
$622
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:06 pm
STL
- MEL
2 stops25h 39m
American Airlines
Deal found 7/20![American Airlines logo]()
$625
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:04 am
STL
- MEL
1 stop32h 41m
American Airlines
Deal found 7/24![American Airlines logo]()
$641
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 8/317:58 pm
STL
- SYD
3 stops46h 27m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$660
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:41 pm
STL
- SYD
2 stops44h 49m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$684
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 10/138:10 pm
STL
- MEL
3 stops60h 00m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$697
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 10/1410:35 am
STL
- MEL
3 stops45h 35m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$739
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 10/1410:35 am
STL
- AVV
3 stops55h 10m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$757
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:04 am
STL
- SYD
1 stop34h 01m
Qantas Airways
Deal found 7/22![Qantas Airways logo]()
$760
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/128:08 pm
STL
- SYD
3 stops44h 52m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$787
Find flight deals from St. Louis to Australia
Keep the following information in mind while searching for St. Louis to Australia flight deals. Data was last updated July 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,082 (FlightHub) |
One-way from | $615 (oojo) |
Popular in | December |
Cheapest in | July |
Average price | $1,161 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 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
Mon 8/3
12:10 pm-7:05 am
2 stops51h 55m
Brisbane
Mon 8/31
10:00 am-12:40 pm
2 stops41h 40m
$1,082
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 10/20
8:48 am-6:45 am
2 stops29h 57m
Melbourne
Tue 11/3
12:00 pm-11:33 pm
1 stop28h 33m
$1,122
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
Tue 10/27
4:05 pm-11:15 pm
3 stops63h 10m
Melbourne Avalon
Wed 11/11
6:00 am-3:26 pm
3 stops50h 26m
$1,124
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
Tue 10/20
2:40 pm-4:05 pm
3 stops33h 25m
Melbourne Avalon
Tue 11/3
6:00 am-3:26 pm
3 stops50h 26m
$1,124
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Mon 8/3
6:37 am-5:00 am
1 stop31h 23m
Brisbane
Mon 8/31
8:35 pm-9:24 am
2 stops27h 49m
$1,141
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Wed 10/14
1:36 pm-8:30 am
2 stops26h 54m
Melbourne
Wed 11/4
12:45 pm-6:03 pm
1 stop22h 18m
$1,144
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Wed 8/5
6:01 am-6:55 am
2 stops33h 54m
Sydney Kingsford Smith
Wed 8/12
10:20 am-6:39 pm
1 stop23h 19m
$1,170
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Wed 9/30
6:30 am-5:00 am
1 stop31h 30m
Brisbane
Sat 10/10
6:30 pm-6:20 pm
2 stops38h 50m
$1,173
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Wed 8/12
3:13 pm-7:00 am
2 stops24h 47m
Sydney Kingsford Smith
Sun 8/30
10:20 am-5:59 pm
1 stop22h 39m
$1,187
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 10/27
5:40 am-5:00 am
1 stop31h 20m
Melbourne
Wed 11/11
10:45 pm-8:07 am
2 stops26h 22m
$1,194
Showing 1-10 of 48 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Australia
Have a flexible travel schedule? Discover the best time to fly to Australia from St. Louis with our price prediction graph.
STL-BNE
STL-MEL
STL-SYD
STL-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-MEL
STL-SYD
STL-AVV
What is the cheapest month to book a flight from St. Louis to Australia?
Currently, May is the cheapest month in which you can book a flight from St. Louis to Australia (average of $992). Flying from St. Louis to Australia in August is currently the most expensive (average of $1,554). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Australia
Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated July 24, 2026.
Read reviews from past customers who have flown Qantas Airways,United Airlines, andAmerican Airlines from St. Louis to Australia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.4
Food
7.0
Entertainment
7.2
Boarding
7.7
Crew
8.1
Overall
7.5
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Comfort
7.4
Food
7.0
Entertainment
7.2
Boarding
7.7
Crew
8.1
Overall
7.5
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Comfort
7.4
Food
7.0
Entertainment
7.2
Boarding
7.7
Crew
8.1
Overall
7.5
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Comfort
7.4
Food
7.0
Entertainment
7.2
Boarding
7.7
Crew
8.1
Overall
7.5
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Comfort
7.4
Food
7.0
Entertainment
7.2
Boarding
7.7
Crew
8.1
Overall
7.5
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Australia
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Australia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Australia by cabin class
Find flights from St. Louis to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Australia flights
Browse other St. Louis and Australia flight options. Last updated on July 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Australia regions
Consider these flights traveling to Australia regions.
Top 4 airlines flying from St. Louis to Australia
Discover the top 4 airlines that operate flights from St. Louis to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,361 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,029 | Average$1,398 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,056 | Average$1,361 | FlexibilityNo cancel fee | On-time71% |