$610+ Cheap flights from St. Louis (STL) to Australia
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Australia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Australia
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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 October 30, 2026.
Explore the most affordable flight options available from St. Louis to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This FlightHub deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:48 pm -
2 stops48h 32m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/26![Qantas Airways logo]()
$984
This FlightHub deal was found by Cheapflights users on 10/28. 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.
Wed 11/256:00 am -
1 stop31h 50m
Wed 12/22:15 pm -
2 stops44h 11m
Deal found 10/28![Qantas Airways logo]()
$1,040
This Justfly.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:10 am -
1 stop29h 40m
Sun 12/208:30 am -
2 stops45h 50m
Deal found 10/28![Qantas Airways logo]()
$1,095
This FlightHub deal was found by Cheapflights users on 10/28. 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.
Sat 12/58:10 am -
1 stop29h 40m
Sat 12/196:30 pm -
2 stops39h 37m
Deal found 10/28![Qantas Airways logo]()
$1,195
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:00 am -
1 stop31h 25m
Tue 12/111:10 am -
2 stops26h 07m
Deal found 10/25![American Airlines logo]()
$1,201
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:00 pm -
2 stops27h 00m
Wed 11/1110:10 am -
2 stops28h 08m
Deal found 10/26![Delta logo]()
$1,205
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sun 11/86:50 pm -
2 stops44h 40m
Sat 11/2111:20 am -
2 stops24h 03m
Deal found 10/28![United Airlines logo]()
$1,207
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Mon 11/92:55 pm -
2 stops24h 35m
Mon 11/2311:20 am -
1 stop22h 45m
Deal found 10/26![United Airlines logo]()
$1,216
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:20 pm -
2 stops26h 10m
Wed 12/210:40 am -
2 stops25h 52m
Deal found 10/28![Delta logo]()
$1,218
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Mon 11/167:05 pm -
1 stop20h 25m
Mon 11/309:05 am -
2 stops49h 36m
Deal found 10/29![United Airlines logo]()
$1,240
This KAYAK deal was found by Cheapflights users on 10/25. 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.
Tue 11/2410:21 am -
1 stop27h 34m
Tue 12/111:10 am -
1 stop29h 48m
Deal found 10/25![Qantas Airways logo]()
$1,243
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 10/279:40 am -
2 stops31h 50m
Wed 11/1112:45 pm -
1 stop22h 20m
Deal found 10/27![United Airlines logo]()
$1,247
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 October 30, 2026.
Discover carefully curated flight deals from St. Louis to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 1/308:30 am -
1 stop31h 00m
Tue 2/1611:20 am -
1 stop22h 57m
Deal found 10/29![United Airlines logo]()
$1,216
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/129:00 am -
2 stops30h 30m
Sun 3/219:35 am -
2 stops30h 01m
Deal found 10/26![Delta logo]()
$1,218
This United deal was found by Cheapflights users on 10/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/110:45 am -
2 stops28h 45m
Mon 4/268:45 pm -
2 stops36h 08m
Deal found 10/28![Multiple Airlines logo]()
$1,244
This Qantas Airways deal was found by Cheapflights users on 10/29. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/316:01 am -
2 stops35h 44m
Tue 2/169:40 am -
1 stop23h 21m
Deal found 10/29![Qantas Airways logo]()
$1,298
This Qatar Airways deal was found by Cheapflights users on 10/29. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/22:15 pm -
2 stops40h 40m
Thu 2/119:55 pm -
2 stops37h 37m
Deal found 10/29![Qatar Airways logo]()
$1,533
This Air Canada deal was found by Cheapflights users on 10/25. 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.
Sat 2/134:05 pm -
3 stops54h 50m
Wed 2/173:45 pm -
3 stops63h 41m
Deal found 10/25![Air Canada logo]()
$1,750
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Fri 1/298:30 am -
1 stop31h 00m
Sat 2/1311:20 am -
1 stop22h 57m
Deal found 10/29![United Airlines logo]()
$1,216
This Qantas Airways deal was found by Cheapflights users on 10/28. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/296:00 pm -
2 stops24h 05m
Sat 5/1510:20 am -
2 stops22h 01m
Deal found 10/28![Multiple Airlines logo]()
$1,273
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Fri 2/263:30 pm -
2 stops26h 00m
Mon 3/812:45 pm -
1 stop26h 10m
Deal found 10/25![United Airlines logo]()
$1,259
This Qantas Airways deal was found by Cheapflights users on 10/27. 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.
Sat 1/166:01 am -
2 stops45h 19m
Mon 2/229:40 am -
1 stop20h 01m
Deal found 10/27![Qantas Airways logo]()
$1,403
This Qantas Airways deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/83:45 pm -
1 stop22h 45m
Fri 2/121:10 pm -
1 stop26h 46m
Deal found 10/25![Qantas Airways logo]()
$1,412
This Air New Zealand deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/268:53 am -
3 stops31h 02m
Mon 3/88:15 am -
2 stops30h 57m
Deal found 10/25![Multiple Airlines logo]()
$1,464
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Mon 2/88:30 am -
2 stops36h 10m
Fri 2/129:20 pm -
2 stops37h 57m
Deal found 10/25![United Airlines logo]()
$1,389
This Qantas Airways deal was found by Cheapflights users on 10/29. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/86:00 pm -
1 stop42h 00m
Fri 2/1210:20 am -
2 stops30h 39m
Deal found 10/29![Qantas Airways logo]()
$1,447
This Air New Zealand deal was found by Cheapflights users on 10/29. 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 New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/68:33 am -
3 stops30h 27m
Mon 3/1511:15 am -
3 stops25h 37m
Deal found 10/29![Multiple Airlines logo]()
$1,480
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Mon 2/88:30 am -
1 stop31h 00m
Fri 2/1211:20 am -
2 stops25h 34m
Deal found 10/26![United Airlines logo]()
$1,441
This Qantas Airways deal was found by Cheapflights users on 10/28. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/146:00 pm -
2 stops24h 05m
Mon 2/111:15 am -
2 stops22h 54m
Deal found 10/28![Multiple Airlines logo]()
$1,485
This Qantas Airways deal was found by Cheapflights users on 10/26. 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.
Tue 2/236:58 pm -
2 stops23h 07m
Mon 3/15:45 pm -
2 stops36h 54m
Deal found 10/26![Qantas Airways logo]()
$1,516
This Qatar Airways deal was found by Cheapflights users on 10/27. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:38 am -
2 stops42h 07m
Fri 11/1310:45 pm -
2 stops37h 14m
Deal found 10/27![Qatar Airways logo]()
$2,083
This Air Canada deal was found by Cheapflights users on 10/25. 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.
Mon 2/84:05 pm -
3 stops58h 40m
Fri 2/128:25 pm -
3 stops60h 01m
Deal found 10/25![Air Canada logo]()
$2,122
This Qantas Airways deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/136:58 pm -
2 stops24h 22m
Wed 2/175:40 pm -
2 stops35h 59m
Deal found 10/25![Qantas Airways logo]()
$1,540
This Qantas Airways deal was found by Cheapflights users on 10/26. 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.
Mon 11/302:48 pm -
2 stops26h 32m
Mon 1/258:15 am -
3 stops25h 54m
Deal found 10/26![Multiple Airlines logo]()
$1,575
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Thu 2/258:40 am -
1 stop31h 40m
Thu 3/411:50 am -
2 stops24h 40m
Deal found 10/26![United Airlines logo]()
$1,583
This oojo deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:48 pm -
2 stops26h 17m
Wed 12/28:05 am -
2 stops29h 35m
Deal found 10/28![Qantas Airways logo]()
$1,560
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Mon 11/97:05 pm -
2 stops27h 25m
Fri 11/1310:30 pm -
2 stops37h 45m
Deal found 10/25![United Airlines logo]()
$1,644
This oojo deal was found by Cheapflights users on 10/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/296:01 am -
1 stop33h 59m
Sat 5/159:10 am -
1 stop29h 49m
Deal found 10/27![Qantas Airways logo]()
$1,592
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/318:30 am -
1 stop33h 00m
Mon 2/1512:45 pm -
1 stop22h 32m
Deal found 10/30![United Airlines logo]()
$1,665
This Qantas Airways deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/16:00 pm -
1 stop42h 00m
Sat 2/137:00 am -
2 stops33h 59m
Deal found 10/30![Qantas Airways logo]()
$1,643
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Mon 1/188:52 am -
2 stops31h 38m
Tue 2/912:45 pm -
1 stop22h 32m
Deal found 10/26![United Airlines logo]()
$1,700
This Qantas Airways deal was found by Cheapflights users on 10/26. 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.
Fri 12/112:54 pm -
2 stops33h 26m
Sun 1/1011:10 pm -
2 stops29h 45m
Deal found 10/26![Multiple Airlines logo]()
$2,156
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated October 30, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:39 pm -
2 stops23h 41m
Sun 11/1511:20 am -
2 stops23h 45m
Deal found 10/27![United Airlines logo]()
$1,388
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:15 am -
1 stop31h 45m
Mon 11/911:50 am -
1 stop27h 25m
Deal found 10/28![United Airlines logo]()
$1,338
This Air Canada deal was found by Cheapflights users on 10/25. 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.
Sat 11/74:05 pm -
2 stops48h 30m
Wed 11/1111:20 am -
2 stops26h 39m
Deal found 10/25![Air Canada logo]()
$1,279
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sun 11/86:50 pm -
2 stops44h 40m
Sat 11/2111:20 am -
1 stop22h 45m
Deal found 10/28![United Airlines logo]()
$1,207
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Mon 11/92:55 pm -
2 stops24h 35m
Mon 11/2311:20 am -
1 stop22h 45m
Deal found 10/26![United Airlines logo]()
$1,216
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Mon 11/167:05 pm -
1 stop20h 25m
Mon 11/309:05 am -
2 stops49h 36m
Deal found 10/29![United Airlines logo]()
$1,240
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:00 am -
1 stop31h 25m
Tue 12/111:10 am -
2 stops26h 07m
Deal found 10/25![American Airlines logo]()
$1,201
This KAYAK deal was found by Cheapflights users on 10/25. 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.
Tue 11/2410:21 am -
1 stop27h 34m
Tue 12/111:10 am -
1 stop29h 48m
Deal found 10/25![Qantas Airways logo]()
$1,243
This FlightHub deal was found by Cheapflights users on 10/28. 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.
Wed 11/256:00 am -
1 stop31h 50m
Wed 12/22:15 pm -
2 stops44h 11m
Deal found 10/28![Qantas Airways logo]()
$1,040
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:20 pm -
2 stops26h 10m
Wed 12/210:40 am -
2 stops25h 52m
Deal found 10/28![Delta logo]()
$1,218
This FlightHub deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:48 pm -
2 stops48h 32m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/26![Qantas Airways logo]()
$984
This Air Canada deal was found by Cheapflights users on 10/26. 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.
Mon 11/304:05 pm -
3 stops53h 30m
Mon 1/258:00 am -
3 stops48h 26m
Deal found 10/26![Air Canada logo]()
$1,444
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 October 30, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This oojo deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:54 pm -
2 stops22h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Qantas Airways logo]()
$610
This oojo deal was found by Cheapflights users on 10/26. 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.
Sat 11/216:55 pm -
1 stop19h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Qantas Airways logo]()
$618
This oojo deal was found by Cheapflights users on 10/26. 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.
Sat 11/142:54 pm -
1 stop23h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Qantas Airways logo]()
$621
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:31 pm -
2 stops25h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Delta logo]()
$627
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Sat 11/141:08 pm -
2 stops26h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![United Airlines logo]()
$629
This Expedia deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/82:24 pm -
1 stop23h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Qantas Airways logo]()
$720
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:00 am -
3 stops36h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$730
This Qantas Airways deal was found by Cheapflights users on 10/29. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:54 pm -
3 stops28h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Multiple Airlines logo]()
$734
This Qantas Airways deal was found by Cheapflights users on 10/26. 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.
Sat 11/1412:58 pm -
3 stops28h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$735
This Qantas Airways deal was found by Cheapflights users on 10/26. 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.
Mon 3/82:35 pm -
2 stops25h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$740
This FlightHub deal was found by Cheapflights users on 10/29. 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.
Thu 12/316:01 am -
2 stops40h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Qantas Airways logo]()
$763
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
Wed 12/96:00 am -
3 stops44h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$917
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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $957 (FlightHub) |
One-way from | $610 (oojo) |
Popular in | December |
Cheapest in | March |
Average price | $1,656 |
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 7,457,451 searches. Data last updated October 30, 2026.
Use the filters below to find and compare flights from St. Louis to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Mon 12/7
2:54 pm-5:50 am
2 stops22h 56m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$610
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Mon 11/16
2:31 pm-8:30 am
2 stops25h 59m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$627
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Sat 11/21
7:30 am-7:30 am
2 stops32h 00m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$629
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Sat 11/14
1:08 pm-7:30 am
2 stops26h 22m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$629
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Mon 11/16
2:54 pm-11:40 am
3 stops28h 46m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$734
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Sat 11/14
12:58 pm-9:45 am
3 stops28h 47m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$735
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Mon 3/8
8:02 pm-6:25 am
3 stops41h 23m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$753
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Thu 12/31
10:20 am-6:30 am
1 stop28h 10m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$785
St. LouisPerth
STL Lambert-St Louis - PER Perth
STLPER
Lambert-St Louis
Fri 12/11
2:54 pm-12:30 pm
2 stops31h 36m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$1,052
St. LouisPerth
STL Lambert-St Louis - PER Perth
STLPER
Lambert-St Louis
Thu 12/10
2:54 pm-4:20 pm
2 stops35h 26m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$1,061
Showing 1-10 of 53 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-BNE
STL-SYD
STL-PER
STL-CNS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Australia
STL-AU0
STL-MEL
STL-BNE
STL-SYD
STL-PER
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 $967). Flying from St. Louis to Australia in December is currently the most expensive (average of $1,867). 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 October 30, 2026.
Read reviews from past customers who have flown Qantas Airways,United Airlines, andAir Canada 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.
Food
7.0
Comfort
7.5
Boarding
7.7
Crew
8.1
Entertainment
7.2
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Food
7.0
Comfort
7.5
Boarding
7.7
Crew
8.1
Entertainment
7.2
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Food
7.0
Comfort
7.5
Boarding
7.7
Crew
8.1
Entertainment
7.2
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Food
7.0
Comfort
7.5
Boarding
7.7
Crew
8.1
Entertainment
7.2
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Food
7.0
Comfort
7.5
Boarding
7.7
Crew
8.1
Entertainment
7.2
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
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 October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Australia regions
Consider these flights traveling to Australia regions.
Top 4 airlines flying from St. Louis to Australia
Discover the top 4 airlines that operate flights from St. Louis to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,474 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,029 | Average$1,376 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,233 | Average$1,605 | FlexibilityNo cancel fee | On-time71% |