$586+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Jul 10 — Jul 171
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 10, 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 10, 2026.
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 6/9![Qantas Airways logo]()
$1,076
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 10/2012:43 pm
STL
- MEL
2 stops26h 02m
American Airlines
Tue 11/311:15 pm
MEL
- STL
2 stops26h 43m
American Airlines
Deal found 6/10![American Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 8/201:36 pm
STL
- MEL
2 stops27h 39m
United Airlines
Sun 8/3010:55 am
MEL
- STL
1 stop22h 44m
United Airlines
Deal found 6/5![United Airlines logo]()
$1,092
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/169:00 am
STL
- MEL
2 stops32h 15m
United Airlines
Sun 8/2310:55 am
MEL
- STL
1 stop22h 44m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,095
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 6/9![Qantas Airways logo]()
$1,096
This KAYAK deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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.
Thu 8/208:42 am
STL
- MEL
1 stop32h 33m
ANA
Sun 8/3010:55 am
MEL
- STL
1 stop22h 44m
ANA
Deal found 6/5![ANA logo]()
$1,100
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2411:51 am
STL
- MEL
2 stops28h 59m
Delta
Tue 11/1012:00 pm
MEL
- STL
2 stops23h 56m
Delta
Deal found 6/9![Delta logo]()
$1,103
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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.
Mon 10/262:15 pm
STL
- MEL
2 stops26h 35m
Delta
Tue 11/1012:00 pm
MEL
- STL
2 stops23h 56m
Delta
Deal found 6/9![Delta logo]()
$1,104
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 12/16:13 pm
STL
- SYD
2 stops33h 37m
Qantas Airways
Tue 12/1511:15 am
SYD
- STL
1 stop29h 42m
Qantas Airways
Deal found 6/9![Qantas Airways logo]()
$1,176
This Air Canada deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 8/812:10 pm
STL
- SYD
2 stops52h 10m
Air Canada
Sun 8/169:20 am
SYD
- STL
2 stops48h 22m
Air Canada
Deal found 6/6![Air Canada logo]()
$1,190
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 6/9![Qantas Airways logo]()
$1,248
This Rumbo deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:35 am
STL
- SYD
1 stop33h 30m
Qantas Airways
Sun 6/219:10 am
SYD
- STL
1 stop29h 46m
Qantas Airways
Deal found 6/7![Qantas Airways logo]()
$1,308
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 10, 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 10, 2026.
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 8/201:36 pm
STL
- MEL
2 stops27h 39m
United Airlines
Sun 8/3010:55 am
MEL
- STL
1 stop22h 44m
United Airlines
Deal found 6/5![United Airlines logo]()
$1,092
This KAYAK deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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.
Thu 8/208:42 am
STL
- MEL
1 stop32h 33m
ANA
Sun 8/3010:55 am
MEL
- STL
1 stop22h 44m
ANA
Deal found 6/5![ANA logo]()
$1,100
This oojo deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 stops44h 48m
Qantas Airways
Mon 8/318:45 pm
BNE
- STL
2 stops41h 14m
Qantas Airways
Deal found 6/7![Qantas Airways logo]()
$1,406
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 6/10![Air Canada logo]()
$1,408
This Air Canada deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 10/312:10 pm
STL
- BNE
2 stops27h 55m
Multiple Airlines
Sat 10/107:40 pm
BNE
- STL
3 stops39h 20m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,437
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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.
Mon 6/227:08 am
STL
- SYD
2 stops32h 42m
Delta
Thu 6/259:15 am
SYD
- STL
2 stops24h 48m
Delta
Deal found 6/8![Delta logo]()
$1,662
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/169:00 am
STL
- MEL
2 stops32h 15m
United Airlines
Sun 8/2310:55 am
MEL
- STL
1 stop22h 44m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,095
This Qatar Airways deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 11/105:21 am
STL
- CBR
3 stops57h 59m
Qatar Airways
Sat 11/1412:30 pm
CBR
- STL
3 stops48h 00m
Qatar Airways
Deal found 6/9![Qatar Airways logo]()
$2,407
This Justfly.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 stops27h 55m
Air Canada
Mon 8/3110:00 am
BNE
- STL
2 stops43h 02m
Air Canada
Deal found 6/9![Air Canada logo]()
$1,416
This Air Canada deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 6/7![Multiple Airlines logo]()
$1,439
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 8/87:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Sun 8/1610:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,381
This Air Canada deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 10/208:55 am
STL
- AVV
3 stops37h 15m
Multiple Airlines
Tue 11/36:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,440
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/33:22 pm
STL
- SYD
2 stops24h 33m
United Airlines
Fri 7/1010:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/5![United Airlines logo]()
$1,422
This Air Canada deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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.
Fri 10/304:15 pm
STL
- BNE
2 stops49h 30m
Multiple Airlines
Fri 11/206:10 am
BNE
- STL
3 stops49h 20m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,441
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/245:10 am
STL
- SYD
2 stops34h 50m
United Airlines
Fri 7/319:30 am
SYD
- STL
2 stops22h 03m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,451
This Air Canada deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 11/37:25 am
MEL
- STL
3 stops49h 05m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,453
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/206:37 am
STL
- BNE
1 stop31h 23m
Qantas Airways
Mon 7/278:50 pm
BNE
- STL
2 stops42h 09m
Qantas Airways
Deal found 6/5![Qantas Airways logo]()
$1,964
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 6/10![United Airlines logo]()
$1,458
This Ovago deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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.
Thu 7/232:31 pm
STL
- PER
3 stops32h 34m
Qantas Airways
Thu 7/3010:30 am
PER
- STL
3 stops26h 28m
Qantas Airways
Deal found 6/8![Qantas Airways logo]()
$1,999
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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
- SYD
1 stop31h 13m
United Airlines
Mon 9/1410:20 am
SYD
- STL
1 stop23h 19m
United Airlines
Deal found 6/7![United Airlines logo]()
$1,459
This Expedia deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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.
Sat 10/316:00 am
STL
- PER
2 stops40h 55m
Multiple Airlines
Thu 11/1910:45 pm
PER
- STL
2 stops39h 14m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,611
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 9/26:00 am
STL
- AVV
2 stops49h 50m
Multiple Airlines
Wed 9/96:00 am
AVV
- STL
2 stops27h 04m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,646
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 11/67:06 pm
STL
- SYD
1 stop21h 09m
United Airlines
Sun 11/1511:50 am
SYD
- STL
1 stop27h 16m
United Airlines
Deal found 6/5![United Airlines logo]()
$1,510
This Expedia deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
STL
- AVV
2 stops41h 10m
Multiple Airlines
Tue 9/84:40 pm
AVV
- STL
2 stops40h 24m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,679
This Air Canada deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/38:55 am
STL
- BNE
3 stops35h 35m
Multiple Airlines
Mon 8/318:40 pm
BNE
- STL
3 stops38h 27m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,727
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/237:23 pm
STL
- PER
2 stops30h 17m
United Airlines
Thu 7/3011:45 pm
PER
- STL
2 stops31h 32m
United Airlines
Deal found 6/8![United Airlines logo]()
$1,821
This Cathay Pacific deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:51 pm
STL
- PER
2 stops38h 49m
Cathay Pacific
Mon 10/1912:10 am
PER
- STL
2 stops34h 50m
Cathay Pacific
Deal found 6/7![Cathay Pacific logo]()
$7,356
This Air New Zealand deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:59 pm
STL
- SYD
3 stops28h 46m
Multiple Airlines
Wed 10/711:55 am
SYD
- STL
3 stops27h 49m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,749
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/57:23 pm
STL
- PER
2 stops30h 17m
United Airlines
Sat 7/114:45 pm
PER
- STL
2 stops38h 32m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,928
This Expedia deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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.
Thu 8/206:53 pm
STL
- AVV
2 stops28h 17m
Multiple Airlines
Sun 8/306:00 am
AVV
- STL
2 stops27h 13m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,769
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated June 10, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 6/256:35 am
STL
- BNE
2 stops43h 25m
Multiple Airlines
Sun 7/57:00 am
BNE
- STL
2 stops24h 28m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,623
This Justfly.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 6/272:15 pm
STL
- BNE
2 stops49h 50m
Air Canada
Sun 7/510:00 am
BNE
- STL
2 stops44h 46m
Air Canada
Deal found 6/9![Air Canada logo]()
$1,618
This Gurufare deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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.
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 6/9![Air New Zealand logo]()
$1,375
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/24:48 pm
STL
- SYD
2 stops23h 12m
United Airlines
Sun 7/1210:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,380
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/37:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Fri 7/1010:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/5![United Airlines logo]()
$1,422
This FlightHub deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/41:14 pm
STL
- SYD
1 stop26h 41m
Qantas Airways
Sat 7/1112:00 pm
SYD
- STL
1 stop19h 58m
Qantas Airways
Deal found 6/6![Qantas Airways logo]()
$1,433
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/46:00 am
STL
- SYD
2 stops34h 00m
United Airlines
Sat 7/1110:20 am
SYD
- STL
2 stops28h 09m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,436
This Bravofly deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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.
Sat 7/46:37 am
STL
- BNE
1 stop31h 23m
Multiple Airlines
Sat 7/118:40 pm
BNE
- STL
2 stops34h 48m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,599
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/186:14 am
STL
- MEL
2 stops35h 01m
United Airlines
Sat 7/256:00 pm
MEL
- STL
2 stops39h 17m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,491
This CheapOair deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:48 pm
STL
- SYD
2 stops23h 32m
Air Canada
Tue 7/289:20 am
SYD
- STL
3 stops51h 06m
Air Canada
Deal found 6/5![Air Canada logo]()
$1,349
This CheapOair deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/245:59 pm
STL
- SYD
3 stops70h 21m
Air Canada
Fri 7/319:20 am
SYD
- STL
2 stops29h 37m
Air Canada
Deal found 6/9![Air Canada logo]()
$1,426
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/245:10 am
STL
- SYD
2 stops34h 50m
United Airlines
Fri 7/319:30 am
SYD
- STL
2 stops22h 03m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,451
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 10, 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 10, 2026.
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 6/155:18 pm
STL
- MEL
1 stop20h 42m
American Airlines
Deal found 6/9![American Airlines logo]()
$586
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 6/152:57 pm
STL
- MEL
2 stops25h 33m
United Airlines
Deal found 6/9![United Airlines logo]()
$591
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:00 am
STL
- SYD
2 stops37h 45m
Qantas Airways
Deal found 6/6![Qantas Airways logo]()
$701
This oojo deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:37 am
STL
- SYD
2 stops37h 08m
Qantas Airways
Deal found 6/6![Qantas Airways logo]()
$711
This BusinessClass deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 6/152:37 pm
STL
- MEL
3 stops28h 43m
Qantas Airways
Deal found 6/9![Qantas Airways logo]()
$755
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/83:41 pm
STL
- SYD
3 stops50h 59m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$757
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:33 pm
STL
- BNE
3 stops45h 12m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$759
This FlightHub deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:10 pm
STL
- BNE
2 stops51h 55m
Air Canada
Deal found 6/5![Air Canada logo]()
$790
This Ovago deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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.
Sat 8/88:55 am
STL
- SYD
1 stop31h 25m
Singapore Airlines
Deal found 6/6![Singapore Airlines logo]()
$801
This oojo deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 6/297:20 pm
STL
- BNE
2 stops25h 10m
Qantas Airways
Deal found 6/8![Qantas Airways logo]()
$824
This KAYAK deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 8/17:23 pm
STL
- SYD
1 stop20h 32m
Air New Zealand
Deal found 6/6![Air New Zealand logo]()
$828
This Expedia deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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.
Sat 8/112:10 pm
STL
- SYD
3 stops52h 10m
Air Canada
Deal found 6/6![Air Canada logo]()
$886
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,076 (oojo) |
One-way from | $586 (American Airlines) |
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 10, 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 8/20
1:36 pm-8:15 am
2 stops27h 39m
Melbourne
Sun 8/30
10:55 am-6:39 pm
1 stop22h 44m
$1,092
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Sun 8/16
9:00 am-8:15 am
2 stops32h 15m
Melbourne
Sun 8/23
10:55 am-6:39 pm
1 stop22h 44m
$1,095
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Thu 8/20
8:42 am-8:15 am
1 stop32h 33m
Melbourne
Sun 8/30
10:55 am-6:39 pm
1 stop22h 44m
$1,100
Quickest round-trip
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Sat 8/8
7:23 pm-6:55 am
1 stop20h 32m
Sydney Kingsford Smith
Sun 8/16
10:20 am-6:39 pm
1 stop23h 19m
$1,381
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Mon 8/3
6:37 am-6:25 pm
2 stops44h 48m
Brisbane
Mon 8/31
8:45 pm-10:59 pm
2 stops41h 14m
$1,406
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Wed 9/23
8:55 am-7:20 am
2 stops31h 25m
Sydney Kingsford Smith
Wed 10/7
10:20 am-6:41 pm
2 stops24h 21m
$1,408
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Mon 8/3
12:10 pm-7:05 am
2 stops27h 55m
Brisbane
Mon 8/31
10:00 am-2:02 pm
2 stops43h 02m
$1,416
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Fri 7/3
3:22 pm-6:55 am
2 stops24h 33m
Sydney Kingsford Smith
Fri 7/10
10:20 am-6:17 pm
1 stop22h 57m
$1,422
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Sat 10/3
12:10 pm-7:05 am
2 stops27h 55m
Brisbane
Sat 10/10
7:40 pm-8:00 pm
3 stops39h 20m
$1,437
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
Tue 10/27
4:15 pm-11:15 pm
3 stops63h 00m
Melbourne Avalon
Wed 11/11
6:00 am-3:30 pm
3 stops50h 30m
$1,439
Showing 1-10 of 43 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-BNE
STL-CBR
STL-AVV
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-BNE
STL-CBR
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 10, 2026.
Read reviews from past customers who have flown Fiji Airways,Qantas Airways, andUnited Airlines from St. Louis to Australia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Overall
8.1
Comfort
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Crew
8.6
Overall
8.1
Comfort
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Crew
8.6
Overall
8.1
Comfort
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Crew
8.6
Overall
8.1
Comfort
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Crew
8.6
Overall
8.1
Comfort
8.1
Food
7.5
Boarding
8.2
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Entertainment
7.5
Crew
8.6
Overall
8.1
Comfort
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 10, 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,312 | 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$1,416 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,056 | Average$1,343 | FlexibilityNo cancel fee | On-time71% |