$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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Dec 4 — Dec 111
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 November 4, 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 November 4, 2026.
This Qantas Airways deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:54 pm -
2 stops29h 56m
Wed 12/99:40 am -
1 stop18h 43m
Deal found 11/4![Multiple Airlines logo]()
$922
This Qantas Airways deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/292:48 pm -
2 stops34h 27m
Sun 12/61:10 pm -
1 stop23h 30m
Deal found 10/31![Multiple Airlines logo]()
$990
This FlightHub deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 11/2![Qantas Airways logo]()
$994
This CheapOair deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Sun 11/296:00 am -
1 stop31h 50m
Sun 12/66:30 pm -
2 stops33h 53m
Deal found 10/31![Qantas Airways logo]()
$1,068
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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.
Thu 12/38:10 am -
1 stop29h 40m
Thu 12/106:30 pm -
2 stops33h 53m
Deal found 11/4![Qantas Airways logo]()
$1,108
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Sun 11/292:48 pm -
2 stops25h 27m
Sun 12/61:10 pm -
2 stops23h 17m
Deal found 10/31![American Airlines logo]()
$1,234
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/306:13 am -
2 stops32h 47m
Mon 1/2510:10 am -
2 stops28h 32m
Deal found 11/3![Delta logo]()
$1,243
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/210:50 am -
2 stops28h 40m
Wed 12/97:55 am -
2 stops26h 16m
Deal found 11/4![United Airlines logo]()
$1,243
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/310:53 am -
2 stops30h 37m
Tue 11/1012:45 pm -
1 stop22h 20m
Deal found 11/3![United Airlines logo]()
$1,247
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 stops46h 51m
Sun 11/87:05 am -
2 stops49h 45m
Deal found 10/31![United Airlines logo]()
$1,260
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 -
1 stop20h 25m
Wed 12/96:05 am -
2 stops28h 06m
Deal found 11/4![United Airlines logo]()
$1,288
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 11/217:18 pm -
2 stops43h 42m
Wed 12/1610:10 am -
2 stops28h 28m
Deal found 11/4![Delta logo]()
$1,293
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 November 4, 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 November 4, 2026.
This Qantas Airways deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:54 pm -
2 stops29h 56m
Wed 12/99:40 am -
1 stop18h 43m
Deal found 11/4![Multiple Airlines logo]()
$922
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 3/68:33 am -
2 stops30h 57m
Mon 3/1510:20 am -
2 stops27h 59m
Deal found 11/4![United Airlines logo]()
$1,221
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/306:13 am -
2 stops32h 47m
Mon 1/2510:10 am -
2 stops28h 32m
Deal found 11/3![Delta logo]()
$1,243
This oojo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:55 pm -
1 stop41h 05m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 11/3![Qantas Airways logo]()
$1,289
This Cathay Pacific deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Sun 2/146:00 am -
2 stops50h 55m
Wed 2/1712:25 am -
2 stops36h 46m
Deal found 11/3![Cathay Pacific logo]()
$1,769
This Qantas Airways deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 10/31![Multiple Airlines logo]()
$1,273
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 11/217:18 pm -
2 stops43h 42m
Wed 12/1610:10 am -
2 stops28h 28m
Deal found 11/4![Delta logo]()
$1,293
This Qantas Airways deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 2/142:23 pm -
2 stops25h 52m
Wed 2/179:40 am -
1 stop24h 29m
Deal found 11/1![Qantas Airways logo]()
$1,441
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 2/141:08 pm -
2 stops26h 22m
Wed 2/1711:20 am -
2 stops22h 59m
Deal found 11/2![United Airlines logo]()
$1,441
This Air Canada deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/144:05 pm -
3 stops54h 50m
Thu 2/183:45 pm -
3 stops63h 41m
Deal found 10/31![Air Canada logo]()
$3,101
This Air New Zealand deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Mon 1/258:05 am -
3 stops33h 50m
Mon 2/810:20 am -
3 stops29h 51m
Deal found 10/31![Multiple Airlines logo]()
$1,418
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 3/126:54 am -
1 stop32h 36m
Sun 3/2110:20 am -
1 stop26h 35m
Deal found 11/3![United Airlines logo]()
$1,470
This Qantas Airways deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 2/12:05 pm -
1 stop20h 04m
Deal found 11/2![Qantas Airways logo]()
$1,481
This Qantas Airways deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/246:54 pm -
2 stops28h 41m
Wed 3/319:45 am -
2 stops23h 34m
Deal found 10/31![Multiple Airlines logo]()
$1,437
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 1/188:30 am -
1 stop28h 50m
Tue 2/211:50 am -
1 stop23h 27m
Deal found 10/31![United Airlines logo]()
$1,498
This Qantas Airways deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/16:55 pm -
2 stops26h 15m
Tue 12/86:20 am -
2 stops23h 03m
Deal found 11/2![Qantas Airways logo]()
$1,535
This Air New Zealand deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Mon 11/302:55 pm -
2 stops25h 00m
Mon 1/2510:20 am -
3 stops30h 00m
Deal found 11/3![Multiple Airlines logo]()
$1,458
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 3/232:15 pm -
2 stops23h 50m
Sun 4/49:15 am -
2 stops30h 21m
Deal found 10/31![Delta logo]()
$1,853
This Qantas Airways deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/246:54 pm -
1 stop41h 06m
Sun 2/289:20 am -
2 stops31h 39m
Deal found 11/4![Qantas Airways logo]()
$1,592
This Air New Zealand deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/3![Multiple Airlines logo]()
$1,464
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/11:18 pm -
3 stops27h 32m
Tue 12/86:30 am -
2 stops28h 41m
Deal found 11/2![United Airlines logo]()
$1,616
This Air New Zealand deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 11/2![Multiple Airlines logo]()
$1,480
This Qantas Airways deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 2/142:23 pm -
2 stops32h 32m
Thu 2/189:15 am -
2 stops44h 26m
Deal found 11/2![Qantas Airways logo]()
$1,669
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/38:17 am -
2 stops40h 43m
Thu 12/108:10 am -
2 stops27h 01m
Deal found 11/4![United Airlines logo]()
$1,696
This Air New Zealand deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Mon 1/1810:45 am -
3 stops30h 50m
Tue 2/29:55 am -
3 stops30h 25m
Deal found 10/31![Multiple Airlines logo]()
$1,482
This Qantas Airways deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 2/146:54 pm -
2 stops29h 16m
Thu 2/186:20 am -
2 stops24h 21m
Deal found 11/1![Qantas Airways logo]()
$1,755
This Qantas Airways deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 11/1![Multiple Airlines logo]()
$1,485
This Air New Zealand deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Sun 1/248:52 am -
3 stops32h 43m
Sun 1/312:05 pm -
3 stops26h 15m
Deal found 11/3![Multiple Airlines logo]()
$1,563
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 2/141:08 pm -
3 stops27h 42m
Thu 2/186:30 am -
2 stops28h 47m
Deal found 10/31![United Airlines logo]()
$2,206
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 3/82:23 pm -
3 stops29h 02m
Sat 3/206:05 am -
2 stops23h 36m
Deal found 10/30![Multiple Airlines logo]()
$1,687
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated November 4, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated November 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 -
1 stop20h 25m
Wed 12/96:05 am -
2 stops28h 06m
Deal found 11/4![United Airlines logo]()
$1,288
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:10 am -
1 stop29h 15m
Mon 11/169:50 pm -
2 stops39h 52m
Deal found 11/2![Qantas Airways logo]()
$1,293
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 11/217:18 pm -
2 stops43h 42m
Wed 12/1610:10 am -
2 stops28h 28m
Deal found 11/4![Delta logo]()
$1,293
This SmartFares deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:00 am -
1 stop34h 00m
Sat 12/56:05 am -
2 stops28h 41m
Deal found 10/31![Qantas Airways logo]()
$1,297
This Qantas Airways deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/292:48 pm -
2 stops34h 27m
Sun 12/61:10 pm -
1 stop23h 30m
Deal found 10/31![Multiple Airlines logo]()
$990
This CheapOair deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Sun 11/296:00 am -
1 stop31h 50m
Sun 12/66:30 pm -
2 stops33h 53m
Deal found 10/31![Qantas Airways logo]()
$1,068
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Sun 11/292:48 pm -
2 stops25h 27m
Sun 12/61:10 pm -
2 stops23h 17m
Deal found 10/31![American Airlines logo]()
$1,234
This FlightHub deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 11/2![Qantas Airways logo]()
$994
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/306:13 am -
2 stops32h 47m
Mon 1/2510:10 am -
2 stops28h 32m
Deal found 11/3![Delta logo]()
$1,243
This Qantas Airways deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:54 pm -
2 stops29h 56m
Wed 12/99:40 am -
1 stop18h 43m
Deal found 11/4![Multiple Airlines logo]()
$922
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/210:50 am -
2 stops28h 40m
Wed 12/97:55 am -
2 stops26h 16m
Deal found 11/4![United Airlines logo]()
$1,243
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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.
Thu 12/38:10 am -
1 stop29h 40m
Thu 12/106:30 pm -
2 stops33h 53m
Deal found 11/4![Qantas Airways logo]()
$1,108
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 November 4, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
This oojo deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/22:54 pm -
2 stops22h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Qantas Airways logo]()
$610
This oojo deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:06 pm -
2 stops42h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Qantas Airways logo]()
$615
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 11/239:45 am -
2 stops30h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Delta logo]()
$627
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 -
1 stop20h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![United Airlines logo]()
$629
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 11/238:00 am -
1 stop31h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![United Airlines logo]()
$645
This American Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Sun 11/292:48 pm -
2 stops25h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![American Airlines logo]()
$648
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/21:18 pm -
3 stops28h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![United Airlines logo]()
$652
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/82:23 pm -
1 stop23h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Qantas Airways logo]()
$720
This Qantas Airways deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 11/1![Multiple Airlines logo]()
$740
This Kiwi.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 11/231:20 pm -
3 stops52h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$763
This Turkish Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/287:55 pm -
3 stops54h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$966
This KAYAK deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Mon 12/288:22 pm -
2 stops41h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Qantas Airways logo]()
$981
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 November 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $922 (Qantas Airways) |
One-way from | $610 (oojo) |
Popular in | December |
Cheapest in | March |
Average price | $1,470 |
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 November 4, 2026.
Use the filters below to find and compare flights from St. Louis to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 12/2
2:54 pm-6:30 am
1 stop23h 36m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$618
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Mon 11/23
9:45 am-8:30 am
2 stops30h 45m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$627
Quickest round-trip
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Mon 11/9
7:05 pm-7:30 am
1 stop20h 25m
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 11/23
8:00 am-7:30 am
1 stop31h 30m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$645
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Sun 11/29
2:48 pm-8:15 am
2 stops25h 27m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$648
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 12/2
1:18 pm-9:30 am
3 stops28h 12m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$652
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Mon 3/8
2:35 pm-9:00 am
2 stops25h 25m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$740
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Sun 11/29
11:14 am-10:25 pm
3 stops43h 11m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$806
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Mon 11/9
12:58 pm-7:55 am
3 stops50h 57m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$806
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 12/2
2:54 pm-12:50 pm
2 stops29h 56m
Brisbane
Wed 12/9
9:40 am-12:23 pm
1 stop18h 43m
$922
Showing 1-10 of 54 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Australia
Have a flexible travel schedule? Discover the best time to fly to Australia from St. Louis with our price prediction graph.
STL-BNE
STL-MEL
STL-SYD
STL-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-BNE
STL-MEL
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 $958). Flying from St. Louis to Australia in December is currently the most expensive (average of $1,800). 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 November 4, 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.
Boarding
7.7
Comfort
7.5
Food
7.0
Entertainment
7.2
Crew
8.1
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Boarding
7.7
Comfort
7.5
Food
7.0
Entertainment
7.2
Crew
8.1
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Boarding
7.7
Comfort
7.5
Food
7.0
Entertainment
7.2
Crew
8.1
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Boarding
7.7
Comfort
7.5
Food
7.0
Entertainment
7.2
Crew
8.1
Overall
7.5
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Boarding
7.7
Comfort
7.5
Food
7.0
Entertainment
7.2
Crew
8.1
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
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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 November 4, 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 November 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,488 | 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$1,090 | Average$1,605 | FlexibilityNo cancel fee | On-time71% |