$551+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
มิ.ย. 28 — ก.ค. 51
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 พฤษภาคม 29, 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 พฤษภาคม 29, 2026.
This American Airlines deal was found by Cheapflights users on 5/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 10/2012:43 pm
STL
- MEL
2 stops26h 02m
American Airlines
อ. 11/312:00 pm
MEL
- STL
2 stops24h 27m
American Airlines
Deal found 5/29![American Airlines logo]()
$1,086
This oojo deal was found by Cheapflights users on 5/29. 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.
อ. 10/273:33 pm
STL
- MEL
1 stop21h 27m
Qantas Airways
พ. 11/1111:15 pm
MEL
- STL
1 stop41h 27m
Qantas Airways
Deal found 5/29![Qantas Airways logo]()
$1,097
This American Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ศ. 10/25:11 pm
STL
- MEL
2 stops28h 09m
American Airlines
อา. 10/189:45 am
MEL
- STL
1 stop29h 20m
American Airlines
Deal found 5/28![American Airlines logo]()
$1,120
This Trip.com deal was found by Cheapflights users on 5/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 10/216:30 am
STL
- MEL
1 stop32h 15m
Qantas Airways
พ. 11/411:15 pm
MEL
- STL
1 stop41h 27m
Qantas Airways
Deal found 5/24![Qantas Airways logo]()
$1,144
This Air Canada deal was found by Cheapflights users on 5/25. 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.
อ. 6/98:40 am
STL
- SYD
2 stops31h 40m
Air Canada
พ. 9/99:20 am
SYD
- STL
2 stops48h 21m
Air Canada
Deal found 5/25![Air Canada logo]()
$1,195
This Ovago deal was found by Cheapflights users on 5/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อา. 8/98:55 am
STL
- SYD
1 stop31h 25m
Multiple Airlines
อา. 8/239:20 am
SYD
- STL
2 stops38h 19m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,228
This Expedia deal was found by Cheapflights users on 5/27. 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.
ศ. 6/122:15 pm
STL
- SYD
2 stops26h 05m
Air Canada
พ. 6/179:20 am
SYD
- STL
2 stops42h 01m
Air Canada
Deal found 5/27![Air Canada logo]()
$1,238
This Expedia deal was found by Cheapflights users on 5/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ศ. 7/317:22 pm
STL
- SYD
2 stops45h 38m
Qantas Airways
อา. 8/98:00 pm
SYD
- STL
2 stops37h 14m
Qantas Airways
Deal found 5/25![Qantas Airways logo]()
$1,247
This United Airlines deal was found by Cheapflights users on 5/28. 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.
พฤ. 5/287:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
จ. 6/810:55 am
MEL
- STL
2 stops25h 15m
United Airlines
Deal found 5/28![United Airlines logo]()
$1,252
This Expedia deal was found by Cheapflights users on 5/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พฤ. 6/47:20 pm
STL
- SYD
1 stop20h 35m
Qantas Airways
พ. 8/1212:00 pm
SYD
- STL
1 stop21h 14m
Qantas Airways
Deal found 5/25![Qantas Airways logo]()
$1,287
This Qantas Airways deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 9/235:00 pm
STL
- SYD
2 stops24h 15m
Qantas Airways
พ. 10/711:05 am
SYD
- STL
2 stops23h 09m
Qantas Airways
Deal found 5/27![Qantas Airways logo]()
$1,293
This FlightHub deal was found by Cheapflights users on 5/29. 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.
พ. 9/231:36 pm
STL
- SYD
2 stops26h 44m
Air Canada
พ. 10/710:20 am
SYD
- STL
3 stops41h 53m
Air Canada
Deal found 5/29![Air Canada logo]()
$1,295
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 พฤษภาคม 29, 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 พฤษภาคม 29, 2026.
This American Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 10/2012:43 pm
STL
- MEL
2 stops26h 02m
American Airlines
อ. 11/312:00 pm
MEL
- STL
1 stop20h 29m
American Airlines
Deal found 5/27![American Airlines logo]()
$1,086
This Qantas Airways deal was found by Cheapflights users on 5/26. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 9/235:00 pm
STL
- SYD
2 stops24h 15m
Qantas Airways
พ. 10/710:30 am
SYD
- STL
2 stops23h 44m
Qantas Airways
Deal found 5/26![Qantas Airways logo]()
$1,293
This Air Canada deal was found by Cheapflights users on 5/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 10/274:15 pm
STL
- AVV
3 stops63h 00m
Multiple Airlines
พ. 11/116:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,328
This KAYAK deal was found by Cheapflights users on 5/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พฤ. 6/117:23 pm
STL
- SYD
1 stop20h 32m
Air New Zealand
จ. 9/710:20 am
SYD
- STL
1 stop23h 19m
Air New Zealand
Deal found 5/28![Air New Zealand logo]()
$1,381
This United Airlines deal was found by Cheapflights users on 5/28. 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.
พฤ. 6/114:48 pm
STL
- SYD
2 stops23h 12m
United Airlines
จ. 9/710:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Deal found 5/28![United Airlines logo]()
$1,382
This FlightHub deal was found by Cheapflights users on 5/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 10/62:40 pm
STL
- PER
3 stops41h 00m
Air Canada
จ. 10/1210:55 pm
PER
- STL
3 stops34h 05m
Air Canada
Deal found 5/28![Air Canada logo]()
$1,545
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 7/1511:18 am
STL
- MEL
2 stops29h 32m
Delta
พ. 7/2210:00 am
MEL
- STL
2 stops29h 41m
Delta
Deal found 5/24![Delta logo]()
$1,659
This Qatar Airways deal was found by Cheapflights users on 5/24. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 9/196:00 am
STL
- PER
2 stops47h 35m
Qatar Airways
อ. 9/2210:45 pm
PER
- STL
2 stops38h 42m
Qatar Airways
Deal found 5/24![Qatar Airways logo]()
$2,046
This oojo deal was found by Cheapflights users on 5/26. 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.
จ. 8/35:13 pm
STL
- BNE
2 stops26h 07m
Qantas Airways
จ. 8/318:00 am
BNE
- STL
2 stops25h 10m
Qantas Airways
Deal found 5/26![Qantas Airways logo]()
$1,322
This Air Canada deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 10/208:55 am
STL
- AVV
3 stops37h 15m
Multiple Airlines
อ. 11/36:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,328
This United Airlines deal was found by Cheapflights users on 5/27. 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.
พฤ. 7/26:01 am
STL
- SYD
2 stops33h 54m
United Airlines
ศ. 7/1010:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,432
This American Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 6/276:35 am
STL
- BNE
1 stop31h 25m
American Airlines
อา. 7/58:35 pm
BNE
- STL
2 stops26h 56m
American Airlines
Deal found 5/27![American Airlines logo]()
$1,459
This Air Canada deal was found by Cheapflights users on 5/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 10/202:40 pm
STL
- MEL
3 stops29h 30m
Multiple Airlines
อ. 11/37:25 am
MEL
- STL
3 stops49h 05m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,342
This United Airlines deal was found by Cheapflights users on 5/24. 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.
อา. 7/57:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
อา. 7/129:30 am
SYD
- STL
2 stops26h 13m
United Airlines
Deal found 5/24![United Airlines logo]()
$1,432
This Air Canada deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 10/274:15 pm
STL
- BNE
3 stops54h 15m
Multiple Airlines
พ. 11/116:10 am
BNE
- STL
3 stops49h 20m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,350
This United Airlines deal was found by Cheapflights users on 5/28. 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.
อ. 6/97:23 pm
STL
- BNE
2 stops45h 47m
United Airlines
จ. 6/226:55 am
BNE
- STL
2 stops26h 22m
United Airlines
Deal found 5/28![United Airlines logo]()
$1,439
This United Airlines deal was found by Cheapflights users on 5/25. 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.
จ. 9/78:42 am
STL
- SYD
1 stop31h 13m
United Airlines
จ. 9/1410:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Deal found 5/25![United Airlines logo]()
$1,459
This Qantas Airways deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 8/85:11 pm
STL
- HBA
2 stops33h 14m
Qantas Airways
พ. 8/126:05 pm
HBA
- STL
2 stops43h 54m
Qantas Airways
Deal found 5/27![Qantas Airways logo]()
$1,778
This Air Canada deal was found by Cheapflights users on 5/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 10/274:15 pm
STL
- MEL
3 stops51h 50m
Multiple Airlines
พ. 11/117:25 am
MEL
- STL
3 stops49h 05m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,470
This United Airlines deal was found by Cheapflights users on 5/29. 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.
ส. 6/277:23 pm
STL
- BNE
2 stops45h 47m
United Airlines
อา. 7/510:30 am
BNE
- STL
1 stop22h 47m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,472
This Qantas Airways deal was found by Cheapflights users on 5/26. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 8/85:11 pm
STL
- CBR
2 stops24h 14m
Qantas Airways
พ. 8/125:10 pm
CBR
- STL
2 stops44h 49m
Qantas Airways
Deal found 5/26![Qantas Airways logo]()
$1,793
This Air Canada deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 10/218:55 am
STL
- AVV
3 stops37h 15m
Multiple Airlines
พ. 11/46:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$1,512
This KAYAK deal was found by Cheapflights users on 5/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
จ. 10/1212:43 pm
STL
- CBR
3 stops31h 27m
Qantas Airways
จ. 10/198:55 am
CBR
- STL
2 stops25h 19m
Qantas Airways
Deal found 5/25![Qantas Airways logo]()
$1,803
This Ovago deal was found by Cheapflights users on 5/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ศ. 9/188:55 am
STL
- PER
2 stops39h 40m
Multiple Airlines
จ. 9/2111:55 pm
PER
- STL
2 stops33h 05m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,530
This United Airlines deal was found by Cheapflights users on 5/24. 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.
อา. 6/217:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
อา. 6/289:30 am
SYD
- STL
2 stops26h 13m
United Airlines
Deal found 5/24![United Airlines logo]()
$1,536
This United Airlines deal was found by Cheapflights users on 5/28. 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.
พฤ. 6/257:23 pm
STL
- BNE
2 stops24h 07m
United Airlines
อา. 7/510:30 am
BNE
- STL
1 stop22h 47m
United Airlines
Deal found 5/28![United Airlines logo]()
$1,554
This oojo deal was found by Cheapflights users on 5/24. 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.
อ. 10/206:30 am
STL
- AVV
2 stops40h 50m
Qantas Airways
อ. 11/310:20 am
AVV
- STL
2 stops23h 20m
Qantas Airways
Deal found 5/24![Qantas Airways logo]()
$1,944
This Air New Zealand deal was found by Cheapflights users on 5/24. 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 Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 10/2111:35 am
STL
- MEL
3 stops31h 20m
Multiple Airlines
พ. 11/410:35 am
MEL
- STL
2 stops25h 03m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,736
This Air Canada deal was found by Cheapflights users on 5/26. 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.
ส. 8/82:40 pm
STL
- CBR
3 stops29h 10m
Air Canada
พ. 8/126:40 pm
CBR
- STL
3 stops40h 27m
Air Canada
Deal found 5/26![Air Canada logo]()
$3,118
This oojo deal was found by Cheapflights users on 5/24. 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.
พ. 7/85:13 pm
STL
- PER
2 stops34h 47m
Qantas Airways
พ. 7/156:25 am
PER
- STL
2 stops26h 28m
Qantas Airways
Deal found 5/24![Qantas Airways logo]()
$1,946
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated พฤษภาคม 29, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated พฤษภาคม 29, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/28. 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.
พฤ. 5/287:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
จ. 6/810:55 am
MEL
- STL
2 stops25h 15m
United Airlines
Deal found 5/28![United Airlines logo]()
$1,252
This Justfly.com deal was found by Cheapflights users on 5/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อา. 5/311:05 pm
STL
- BNE
2 stops51h 00m
Air Canada
อา. 6/710:00 am
BNE
- STL
2 stops49h 25m
Air Canada
Deal found 5/24![Air Canada logo]()
$1,412
This United Airlines deal was found by Cheapflights users on 5/27. 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.
พ. 6/37:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
พ. 6/109:30 am
SYD
- STL
2 stops23h 12m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,337
This American Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 6/31:19 pm
STL
- SYD
1 stop26h 36m
American Airlines
พ. 6/1012:00 pm
SYD
- STL
1 stop26h 59m
American Airlines
Deal found 5/27![American Airlines logo]()
$1,349
This Expedia deal was found by Cheapflights users on 5/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พฤ. 6/47:20 pm
STL
- SYD
1 stop20h 35m
Qantas Airways
พ. 8/1212:00 pm
SYD
- STL
1 stop21h 14m
Qantas Airways
Deal found 5/25![Qantas Airways logo]()
$1,287
This Air Canada deal was found by Cheapflights users on 5/25. 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.
อ. 6/98:40 am
STL
- SYD
2 stops31h 40m
Air Canada
พ. 9/99:20 am
SYD
- STL
2 stops48h 21m
Air Canada
Deal found 5/25![Air Canada logo]()
$1,195
This Expedia deal was found by Cheapflights users on 5/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พฤ. 6/116:35 am
STL
- SYD
1 stop33h 30m
Qantas Airways
จ. 9/75:50 pm
SYD
- STL
1 stop20h 09m
Qantas Airways
Deal found 5/28![Qantas Airways logo]()
$1,298
This KAYAK deal was found by Cheapflights users on 5/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พฤ. 6/117:23 pm
STL
- SYD
1 stop20h 32m
Air New Zealand
จ. 9/710:20 am
SYD
- STL
1 stop23h 19m
Air New Zealand
Deal found 5/28![Air New Zealand logo]()
$1,381
This Expedia deal was found by Cheapflights users on 5/27. 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.
ศ. 6/122:15 pm
STL
- SYD
2 stops26h 05m
Air Canada
พ. 6/179:20 am
SYD
- STL
2 stops42h 01m
Air Canada
Deal found 5/27![Air Canada logo]()
$1,238
This Justfly.com deal was found by Cheapflights users on 5/29. 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.
พฤ. 6/252:15 pm
STL
- BNE
2 stops49h 50m
Air Canada
อา. 7/510:00 am
BNE
- STL
2 stops49h 43m
Air Canada
Deal found 5/29![Air Canada logo]()
$1,429
This FlightHub deal was found by Cheapflights users on 5/29. 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.
ส. 6/272:15 pm
STL
- BNE
2 stops49h 50m
Air Canada
อา. 7/510:00 am
BNE
- STL
2 stops52h 57m
Air Canada
Deal found 5/29![Air Canada logo]()
$1,392
This United Airlines deal was found by Cheapflights users on 5/28. 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.
ส. 6/277:05 pm
STL
- BNE
2 stops44h 25m
United Airlines
อา. 7/510:30 am
BNE
- STL
1 stop22h 47m
United Airlines
Deal found 5/28![United Airlines logo]()
$1,427
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 พฤษภาคม 29, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated พฤษภาคม 29, 2026.
This Expedia deal was found by Cheapflights users on 5/27. 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.
พ. 10/213:33 pm
STL
- MEL
1 stop21h 27m
Qantas Airways
Deal found 5/27![Qantas Airways logo]()
$551
This American Airlines deal was found by Cheapflights users on 5/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 6/232:32 pm
STL
- MEL
2 stops25h 13m
American Airlines
Deal found 5/26![American Airlines logo]()
$579
This American Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 10/2112:43 pm
STL
- MEL
2 stops26h 02m
American Airlines
Deal found 5/27![American Airlines logo]()
$586
This United Airlines deal was found by Cheapflights users on 5/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 6/237:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Deal found 5/26![United Airlines logo]()
$592
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
ศ. 7/107:10 pm
STL
- SYD
2 stops45h 20m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$696
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
อ. 6/237:03 pm
STL
- AVV
3 stops52h 07m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$735
This Kiwi.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 10/218:10 pm
STL
- AVV
3 stops58h 40m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$736
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
พ. 6/247:46 pm
STL
- MEL
3 stops54h 54m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$752
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
อ. 6/237:03 pm
STL
- MEL
3 stops48h 22m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$762
This Kiwi.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 10/217:00 am
STL
- MEL
3 stops35h 25m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$778
This Bravofly deal was found by Cheapflights users on 5/26. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 6/246:35 am
STL
- AVV
2 stops40h 45m
Qantas Airways
Deal found 5/26![Qantas Airways logo]()
$1,321
This BusinessClass deal was found by Cheapflights users on 5/26. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พฤ. 7/25:13 pm
STL
- BNE
2 stops29h 02m
Qantas Airways
Deal found 5/26![Qantas Airways logo]()
$1,439
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 พฤษภาคม 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,086 (American Airlines) |
One-way from | $551 (Expedia) |
Popular in | December |
Cheapest in | March |
Average price | $1,341 |
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 พฤษภาคม 29, 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
อ. 10/20
12:43 pm-6:45 am
2 stops26h 02m
Melbourne
อ. 11/3
12:00 pm-3:29 pm
1 stop20h 29m
$1,086
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
พ. 9/23
5:00 pm-8:15 am
2 stops24h 15m
Sydney Kingsford Smith
พ. 10/7
10:30 am-6:14 pm
2 stops23h 44m
$1,293
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
จ. 8/3
5:13 pm-10:20 am
2 stops26h 07m
Brisbane
จ. 8/31
8:00 am-6:10 pm
2 stops25h 10m
$1,322
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
อ. 10/27
4:15 pm-11:15 pm
3 stops63h 00m
Melbourne Avalon
พ. 11/11
6:00 am-3:30 pm
3 stops50h 30m
$1,328
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
อ. 10/20
8:55 am-2:10 pm
3 stops37h 15m
Melbourne Avalon
อ. 11/3
6:00 am-3:30 pm
3 stops50h 30m
$1,328
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
อ. 10/20
2:40 pm-12:10 pm
3 stops29h 30m
Melbourne
อ. 11/3
7:25 am-3:30 pm
3 stops49h 05m
$1,342
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
อ. 10/27
4:15 pm-1:30 pm
3 stops54h 15m
Brisbane
พ. 11/11
6:10 am-3:30 pm
3 stops49h 20m
$1,350
Quickest round-trip
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
พฤ. 6/11
7:23 pm-6:55 am
1 stop20h 32m
Sydney Kingsford Smith
จ. 9/7
10:20 am-6:39 pm
1 stop23h 19m
$1,381
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
พฤ. 6/11
4:48 pm-7:00 am
2 stops23h 12m
Sydney Kingsford Smith
จ. 9/7
10:20 am-6:39 pm
1 stop23h 19m
$1,382
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
พฤ. 7/2
6:01 am-6:55 am
2 stops33h 54m
Sydney Kingsford Smith
ศ. 7/10
10:20 am-6:17 pm
1 stop22h 57m
$1,432
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 พฤษภาคม 29, 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
Crew
8.6
Entertainment
7.5
Food
7.5
Comfort
8.1
Overall
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Crew
8.6
Entertainment
7.5
Food
7.5
Comfort
8.1
Overall
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Crew
8.6
Entertainment
7.5
Food
7.5
Comfort
8.1
Overall
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Crew
8.6
Entertainment
7.5
Food
7.5
Comfort
8.1
Overall
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Crew
8.6
Entertainment
7.5
Food
7.5
Comfort
8.1
Overall
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Crew
8.6
Entertainment
7.5
Food
7.5
Comfort
8.1
Overall
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Australia
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Complete your trip
Complete your trip to Australia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Australia by cabin class
Find flights from St. Louis to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Australia flights
Browse other St. Louis and Australia flight options. Last updated on พฤษภาคม 29, 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 พฤษภาคม 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,325 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$887 | Average$1,264 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,029 | Average$1,429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,056 | Average$1,365 | FlexibilityNo cancel fee | On-time71% |