$602+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Jul 16 — Jul 231
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 June 16, 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 June 16, 2026.
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 11/156:13 pm
STL
- SYD
2 stops33h 37m
Qantas Airways
Wed 11/2511:15 am
SYD
- STL
1 stop29h 27m
Qantas Airways
Deal found 6/12![Qantas Airways logo]()
$1,041
This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 11/167:00 am
STL
- SYD
1 stop33h 00m
Qantas Airways
Sat 11/215:50 pm
SYD
- STL
2 stops35h 47m
Qantas Airways
Deal found 6/11![Qantas Airways logo]()
$1,042
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
Sat 8/2212:45 pm
STL
- MEL
2 stops27h 00m
American Airlines
Mon 8/319:45 am
MEL
- STL
1 stop28h 14m
American Airlines
Deal found 6/12![American Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/307:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Thu 8/610:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,090
This American Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 10/206:30 am
STL
- MEL
1 stop32h 15m
American Airlines
Tue 11/311:15 pm
MEL
- STL
2 stops26h 43m
American Airlines
Deal found 6/13![American Airlines logo]()
$1,093
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 10/276:30 am
STL
- MEL
1 stop35h 00m
Qantas Airways
Wed 11/1111:15 pm
MEL
- STL
1 stop41h 27m
Qantas Airways
Deal found 6/12![Qantas Airways logo]()
$1,095
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 10/207:05 pm
STL
- MEL
2 stops45h 45m
Delta
Tue 11/312:00 pm
MEL
- STL
2 stops29h 36m
Delta
Deal found 6/16![Delta logo]()
$1,102
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 8/24:48 pm
STL
- MEL
2 stops47h 42m
United Airlines
Thu 8/2010:55 am
MEL
- STL
2 stops36h 44m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,109
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 8/17:05 pm
STL
- MEL
2 stops69h 25m
United Airlines
Thu 8/2010:55 am
MEL
- STL
2 stops36h 44m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,110
This KAYAK deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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.
Sat 8/87:23 pm
STL
- AVV
2 stops36h 27m
Multiple Airlines
Sat 8/158:40 pm
AVV
- STL
2 stops36h 59m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,112
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
Fri 10/306:51 pm
STL
- BNE
2 stops31h 19m
Qantas Airways
Thu 11/121:10 pm
BNE
- STL
1 stop26h 32m
Qantas Airways
Deal found 6/12![Qantas Airways logo]()
$1,113
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 9/15:23 pm
STL
- MEL
2 stops47h 27m
Delta
Wed 9/910:00 am
MEL
- STL
2 stops25h 35m
Delta
Deal found 6/14![Delta logo]()
$1,115
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 June 16, 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 June 16, 2026.
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/307:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Thu 8/610:55 am
MEL
- STL
2 stops28h 02m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,095
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 10/273:45 pm
STL
- MEL
2 stops25h 05m
Delta
Wed 11/1112:00 pm
MEL
- STL
2 stops25h 49m
Delta
Deal found 6/16![Delta logo]()
$1,102
This oojo deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 8/36:37 am
STL
- BNE
2 stops41h 08m
Qantas Airways
Mon 8/318:45 pm
BNE
- STL
2 stops41h 14m
Qantas Airways
Deal found 6/13![Qantas Airways logo]()
$1,404
This FlightHub deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 11/1610:23 am
STL
- SYD
3 stops30h 12m
Air Canada
Sat 11/2111:20 am
SYD
- STL
3 stops42h 00m
Air Canada
Deal found 6/11![Air Canada logo]()
$1,414
This Air Canada deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 10/274:15 pm
STL
- AVV
3 stops63h 00m
Multiple Airlines
Wed 11/116:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$1,437
This BusinessClass deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
Mon 9/71:36 pm
STL
- SYD
2 stops26h 24m
Air New Zealand
Mon 9/1410:20 am
SYD
- STL
1 stop23h 19m
Air New Zealand
Deal found 6/11![Air New Zealand logo]()
$1,452
This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 12/17:00 am
STL
- PER
2 stops45h 45m
Qatar Airways
Sat 12/510:45 pm
PER
- STL
2 stops39h 14m
Qatar Airways
Deal found 6/11![Qatar Airways logo]()
$1,574
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/16:00 am
STL
- BNE
1 stop32h 00m
American Airlines
Thu 10/18:35 pm
BNE
- STL
2 stops27h 49m
American Airlines
Deal found 6/15![American Airlines logo]()
$1,595
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 8/17:05 pm
STL
- MEL
2 stops69h 25m
United Airlines
Thu 8/2010:55 am
MEL
- STL
2 stops36h 44m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,110
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 9/226:55 pm
STL
- MEL
2 stops45h 55m
Delta
Fri 10/911:00 am
MEL
- STL
2 stops25h 37m
Delta
Deal found 6/13![Delta logo]()
$1,115
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 9/13:13 pm
STL
- MEL
2 stops26h 02m
United Airlines
Wed 9/910:55 am
MEL
- STL
1 stop22h 44m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,275
This FlightHub deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 stops27h 55m
Air Canada
Mon 8/3110:00 am
BNE
- STL
2 stops43h 02m
Air Canada
Deal found 6/15![Air Canada logo]()
$1,415
This Air Canada deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 stops31h 30m
Multiple Airlines
Tue 11/36:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$1,437
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 10/277:06 pm
STL
- MEL
1 stop21h 54m
United Airlines
Wed 11/1111:30 am
MEL
- STL
2 stops27h 36m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,280
This Air Canada deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 9/228:55 am
STL
- AVV
3 stops38h 15m
Multiple Airlines
Fri 10/96:00 am
AVV
- STL
3 stops48h 00m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,529
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 9/110:53 am
STL
- MEL
2 stops30h 22m
United Airlines
Tue 9/810:55 am
MEL
- STL
2 stops24h 43m
United Airlines
Deal found 6/13![United Airlines logo]()
$1,280
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 10/201:29 pm
STL
- MEL
2 stops27h 46m
United Airlines
Tue 11/31:00 pm
MEL
- STL
1 stop21h 53m
United Airlines
Deal found 6/16![United Airlines logo]()
$1,280
This Justfly.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 6/271:38 pm
STL
- BNE
2 stops26h 27m
Air Canada
Sun 7/510:00 am
BNE
- STL
2 stops47h 42m
Air Canada
Deal found 6/14![Air Canada logo]()
$1,712
This Bravofly deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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.
Wed 7/157:23 pm
STL
- BNE
2 stops27h 17m
Air New Zealand
Wed 7/2212:20 pm
BNE
- STL
2 stops44h 22m
Air New Zealand
Deal found 6/15![Air New Zealand logo]()
$1,885
This Air Canada deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 8/312:10 pm
STL
- BNE
2 stops27h 55m
Multiple Airlines
Mon 8/318:40 pm
BNE
- STL
3 stops38h 27m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,565
This Ovago deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:14 pm
STL
- PER
3 stops76h 21m
Qantas Airways
Wed 7/2210:35 am
PER
- STL
3 stops35h 11m
Qantas Airways
Deal found 6/14![Qantas Airways logo]()
$1,986
This Air Canada deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 8/222:40 pm
STL
- AVV
3 stops34h 25m
Multiple Airlines
Mon 8/318:55 pm
AVV
- STL
3 stops38h 12m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,588
This Qatar Airways deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 11/103:59 pm
STL
- CBR
3 stops47h 21m
Qatar Airways
Sat 11/1412:30 pm
CBR
- STL
3 stops49h 25m
Qatar Airways
Deal found 6/14![Qatar Airways logo]()
$2,238
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/307:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Thu 8/69:30 am
SYD
- STL
2 stops26h 56m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,434
This Air Canada deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 7/282:40 pm
STL
- BNE
3 stops30h 20m
Multiple Airlines
Tue 8/48:40 pm
BNE
- STL
3 stops38h 42m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,594
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 9/234:40 pm
STL
- SYD
2 stops23h 20m
United Airlines
Wed 10/711:20 am
SYD
- STL
1 stop23h 23m
United Airlines
Deal found 6/12![United Airlines logo]()
$1,458
This Air Canada deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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
Wed 9/98:55 pm
AVV
- STL
3 stops56h 05m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,625
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 9/224:40 pm
STL
- MEL
3 stops26h 55m
United Airlines
Fri 10/910:30 am
MEL
- STL
2 stops22h 07m
United Airlines
Deal found 6/13![United Airlines logo]()
$1,471
This Ovago deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/262:31 pm
STL
- CNS
3 stops33h 29m
Multiple Airlines
Sun 8/29:40 pm
CNS
- STL
2 stops41h 19m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,659
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 11/144:30 pm
STL
- SYD
2 stops45h 30m
United Airlines
Tue 11/2411:50 am
SYD
- STL
1 stop21h 45m
United Airlines
Deal found 6/11![United Airlines logo]()
$1,478
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated June 16, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
Wed 6/177:08 am
STL
- SYD
2 stops32h 42m
Delta
Wed 6/249:15 am
SYD
- STL
2 stops38h 27m
Delta
Deal found 6/12![Delta logo]()
$1,376
This Gurufare deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/177:23 pm
STL
- SYD
1 stop20h 32m
Air New Zealand
Wed 6/249:30 am
SYD
- STL
2 stops28h 15m
Air New Zealand
Deal found 6/12![Air New Zealand logo]()
$1,516
This BusinessClass deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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.
Thu 7/27:23 pm
STL
- SYD
1 stop20h 32m
Air New Zealand
Sun 7/1210:20 am
SYD
- STL
1 stop22h 57m
Air New Zealand
Deal found 6/14![Air New Zealand logo]()
$1,371
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/26:01 am
STL
- SYD
2 stops33h 54m
United Airlines
Sun 7/1210:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,380
This Trip.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 7/127:10 pm
STL
- MEL
3 stops50h 15m
Multiple Airlines
Sun 7/191:30 pm
MEL
- STL
3 stops43h 45m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,564
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 7/128:35 am
STL
- MEL
2 stops32h 40m
United Airlines
Sun 7/199:30 am
MEL
- STL
2 stops29h 27m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,585
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/157:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Wed 7/229:30 am
MEL
- STL
2 stops29h 27m
United Airlines
Deal found 6/16![United Airlines logo]()
$1,425
This oojo deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 7/156:37 am
STL
- SYD
1 stop33h 28m
Qantas Airways
Wed 7/225:50 pm
SYD
- STL
1 stop21h 09m
Qantas Airways
Deal found 6/14![Qantas Airways logo]()
$1,523
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 7/159:30 am
STL
- SYD
2 stops30h 25m
United Airlines
Wed 7/2210:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,534
This Air Canada deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 7/2812:10 pm
STL
- BNE
2 stops27h 55m
Air Canada
Tue 8/410:15 am
BNE
- STL
2 stops47h 27m
Air Canada
Deal found 6/13![Air Canada logo]()
$1,401
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/307:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Thu 8/610:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,090
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/307:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Thu 8/69:30 am
SYD
- STL
2 stops26h 56m
United Airlines
Deal found 6/15![United Airlines logo]()
$1,434
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 June 16, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This oojo deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/76:00 am
STL
- MEL
1 stop33h 45m
Qantas Airways
Deal found 6/15![Qantas Airways logo]()
$602
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/85:47 pm
STL
- MEL
2 stops47h 03m
Delta
Deal found 6/15![Delta logo]()
$617
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 9/18:08 pm
STL
- SYD
2 stops44h 22m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$625
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/88:08 pm
STL
- SYD
3 stops56h 02m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$684
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 9/111:15 am
STL
- MEL
2 stops30h 00m
United Airlines
Deal found 6/14![United Airlines logo]()
$710
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/78:42 am
STL
- MEL
2 stops34h 53m
United Airlines
Deal found 6/15![United Airlines logo]()
$738
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/88:08 pm
STL
- AVV
3 stops56h 57m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$793
This Ovago deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:55 am
STL
- SYD
1 stop31h 25m
Air New Zealand
Deal found 6/11![Air New Zealand logo]()
$801
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/88:08 pm
STL
- MEL
3 stops51h 02m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$819
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 9/77:36 pm
STL
- MEL
3 stops57h 54m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$867
This Expedia deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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.
Mon 9/73:32 pm
STL
- AVV
2 stops33h 33m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$979
This Air Canada deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 9/12:40 pm
STL
- AVV
3 stops34h 25m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,047
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 June 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,041 (oojo) |
One-way from | $602 (oojo) |
Popular in | December |
Cheapest in | January |
Average price | $1,560 |
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 June 16, 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. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Thu 7/30
7:23 pm-8:15 am
1 stop21h 52m
Melbourne
Thu 8/6
10:55 am-11:57 pm
2 stops28h 02m
$1,095
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 10/27
3:45 pm-8:50 am
2 stops25h 05m
Melbourne
Wed 11/11
12:00 pm-8:49 pm
2 stops25h 49m
$1,102
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Sat 8/1
7:05 pm-7:30 am
2 stops69h 25m
Melbourne
Thu 8/20
10:55 am-8:39 am
2 stops36h 44m
$1,110
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 9/22
6:55 pm-7:50 am
2 stops45h 55m
Melbourne
Fri 10/9
11:00 am-8:37 pm
2 stops25h 37m
$1,115
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 9/1
3:13 pm-8:15 am
2 stops26h 02m
Melbourne
Wed 9/9
10:55 am-6:39 pm
1 stop22h 44m
$1,275
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 10/27
7:06 pm-9:00 am
1 stop21h 54m
Melbourne
Wed 11/11
11:30 am-10:06 pm
2 stops27h 36m
$1,280
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 9/1
10:53 am-8:15 am
2 stops30h 22m
Melbourne
Tue 9/8
10:55 am-8:38 pm
2 stops24h 43m
$1,280
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 10/20
1:29 pm-9:15 am
2 stops27h 46m
Melbourne
Tue 11/3
1:00 pm-5:53 pm
1 stop21h 53m
$1,280
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Mon 8/3
6:37 am-2:45 pm
2 stops41h 08m
Brisbane
Mon 8/31
8:45 pm-10:59 pm
2 stops41h 14m
$1,404
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 11/16
10:23 am-9:35 am
3 stops30h 12m
Sydney Kingsford Smith
Sat 11/21
11:20 am-12:20 pm
3 stops42h 00m
$1,414
Showing 1-10 of 42 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Australia
Have a flexible travel schedule? Discover the best time to fly to Australia from St. Louis with our price prediction graph.
STL-MEL
STL-SYD
STL-AVV
STL-BNE
STL-PER
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Australia
STL-AU0
STL-MEL
STL-SYD
STL-AVV
STL-BNE
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 $310). 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 June 16, 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.
Comfort
8.1
Crew
8.5
Entertainment
7.5
Overall
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Comfort
8.1
Crew
8.5
Entertainment
7.5
Overall
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Comfort
8.1
Crew
8.5
Entertainment
7.5
Overall
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Comfort
8.1
Crew
8.5
Entertainment
7.5
Overall
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Comfort
8.1
Crew
8.5
Entertainment
7.5
Overall
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Comfort
8.1
Crew
8.5
Entertainment
7.5
Overall
8.1
Food
7.5
Boarding
8.2
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 June 16, 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 June 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,313 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,029 | Average$1,416 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,056 | Average$1,343 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,265 | Average$1,314 | FlexibilityNo cancel fee | On-time74% |