$606+ Cheap flights from St. Louis (STL) to Australia
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Oct 2 — Oct 91
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 September 2, 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 September 2, 2026.
This American Airlines deal was found by Cheapflights users on 8/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:40 am -
1 stop31h 20m
Wed 11/1110:45 pm -
2 stops26h 22m
Deal found 8/30![American Airlines logo]()
$1,146
This Delta deal was found by Cheapflights users on 8/31. 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 10/207:20 pm -
2 stops45h 30m
Tue 11/310:10 am -
2 stops27h 59m
Deal found 8/31![Delta logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/2011:10 am -
2 stops30h 05m
Tue 11/312:45 pm -
1 stop22h 20m
Deal found 9/2![United Airlines logo]()
$1,169
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Fri 9/254:39 pm -
2 stops23h 51m
Fri 10/210:55 am -
1 stop22h 48m
Deal found 8/28![United Airlines logo]()
$1,265
This Air Canada deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:10 pm -
2 stops27h 55m
Mon 10/1910:00 am -
2 stops47h 41m
Deal found 8/28![Air Canada logo]()
$1,291
This American Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:04 am -
1 stop32h 41m
Tue 11/312:00 pm -
1 stop28h 33m
Deal found 8/29![American Airlines logo]()
$1,302
This oojo deal was found by Cheapflights users on 8/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:12 am -
1 stop26h 48m
Wed 11/1110:45 pm -
1 stop38h 57m
Deal found 8/30![Qantas Airways logo]()
$1,316
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/255:55 pm -
1 stop21h 05m
Mon 11/911:50 am -
2 stops26h 09m
Deal found 8/31![United Airlines logo]()
$1,321
This oojo deal was found by Cheapflights users on 8/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:34 pm -
1 stop24h 21m
Tue 10/66:50 pm -
1 stop20h 56m
Deal found 8/30![Qantas Airways logo]()
$1,326
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Tue 9/294:39 pm -
2 stops23h 21m
Tue 10/610:30 am -
2 stops24h 13m
Deal found 8/30![United Airlines logo]()
$1,330
This United Airlines deal was found by Cheapflights users on 8/28. 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 10/127:08 am -
1 stop32h 22m
Mon 10/196:55 am -
2 stops26h 48m
Deal found 8/28![United Airlines logo]()
$1,332
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Tue 12/81:15 pm -
2 stops27h 05m
Wed 12/169:15 am -
1 stop24h 35m
Deal found 9/1![United Airlines logo]()
$1,335
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 September 2, 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 September 2, 2026.
This Delta deal was found by Cheapflights users on 8/31. 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 10/207:20 pm -
2 stops45h 30m
Tue 11/310:10 am -
2 stops27h 59m
Deal found 8/31![Delta logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/201:29 pm -
2 stops27h 46m
Tue 11/312:45 pm -
2 stops25h 14m
Deal found 9/2![United Airlines logo]()
$1,169
This Air Canada deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:05 pm -
3 stops55h 30m
Wed 11/116:00 am -
3 stops50h 26m
Deal found 8/29![Multiple Airlines logo]()
$1,335
This American Airlines deal was found by Cheapflights users on 9/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:48 am -
1 stop30h 07m
Sat 10/246:50 pm -
1 stop20h 56m
Deal found 9/1![American Airlines logo]()
$1,447
This oojo deal was found by Cheapflights users on 8/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:30 am -
2 stops37h 15m
Tue 10/611:25 am -
2 stops46h 55m
Deal found 8/30![Qantas Airways logo]()
$1,692
This Qatar Airways deal was found by Cheapflights users on 8/31. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:29 am -
2 stops47h 06m
Sat 9/2610:45 pm -
2 stops38h 14m
Deal found 8/31![Qatar Airways logo]()
$1,721
This CheapOair deal was found by Cheapflights users on 9/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:35 am -
3 stops28h 45m
Sat 10/2410:20 am -
3 stops29h 11m
Deal found 9/1![Air Canada logo]()
$1,926
This Delta deal was found by Cheapflights users on 8/31. 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 10/2712:00 pm -
2 stops27h 00m
Wed 11/1110:10 am -
2 stops28h 08m
Deal found 8/31![Delta logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Tue 10/2711:00 am -
2 stops30h 30m
Wed 11/1112:45 pm -
1 stop22h 20m
Deal found 9/1![United Airlines logo]()
$1,169
This United Airlines deal was found by Cheapflights users on 8/29. 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 9/281:36 pm -
2 stops27h 39m
Mon 10/511:55 am -
2 stops25h 26m
Deal found 8/29![United Airlines logo]()
$1,170
This Air Canada deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/264:05 pm -
3 stops54h 30m
Mon 3/86:00 am -
3 stops50h 26m
Deal found 8/29![Multiple Airlines logo]()
$1,373
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Fri 2/267:06 pm -
1 stop22h 24m
Mon 3/812:45 pm -
1 stop22h 08m
Deal found 8/28![United Airlines logo]()
$1,215
This Cathay Pacific deal was found by Cheapflights users on 8/29. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:29 pm -
2 stops47h 26m
Mon 11/168:30 am -
2 stops47h 47m
Deal found 8/29![Multiple Airlines logo]()
$1,451
This United Airlines deal was found by Cheapflights users on 8/28. 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 2/147:06 pm -
1 stop20h 24m
Thu 2/1811:20 am -
1 stop22h 33m
Deal found 8/28![United Airlines logo]()
$1,299
This Justfly.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:01 am -
2 stops30h 49m
Fri 10/212:10 am -
2 stops36h 49m
Deal found 8/29![Multiple Airlines logo]()
$1,471
This Qantas Airways deal was found by Cheapflights users on 8/31. 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.
Sat 11/78:10 am -
2 stops34h 20m
Wed 11/113:40 pm -
2 stops45h 02m
Deal found 8/31![Qantas Airways logo]()
$1,881
This United Airlines deal was found by Cheapflights users on 8/28. 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 10/127:08 am -
1 stop32h 22m
Mon 10/196:55 am -
2 stops26h 48m
Deal found 8/28![United Airlines logo]()
$1,332
This Air Canada deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:40 pm -
3 stops33h 25m
Tue 11/36:00 am -
3 stops50h 26m
Deal found 8/29![Multiple Airlines logo]()
$1,482
This KAYAK deal was found by Cheapflights users on 8/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:44 pm -
2 stops28h 11m
Fri 11/133:40 pm -
3 stops66h 36m
Deal found 8/30![Qantas Airways logo]()
$1,941
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Wed 12/91:15 pm -
2 stops26h 50m
Wed 12/2311:50 am -
2 stops27h 40m
Deal found 8/28![United Airlines logo]()
$1,335
This BusinessClass deal was found by Cheapflights users on 8/31. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:04 am -
2 stops51h 36m
Wed 10/2112:10 am -
2 stops36h 49m
Deal found 8/31![Multiple Airlines logo]()
$1,538
This Qantas Airways deal was found by Cheapflights users on 8/28. 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.
Sun 11/82:54 pm -
1 stop23h 01m
Wed 11/119:55 am -
2 stops27h 47m
Deal found 8/28![Qantas Airways logo]()
$2,055
This United Airlines deal was found by Cheapflights users on 9/1. 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 2/88:30 am -
1 stop31h 00m
Fri 2/1211:20 am -
1 stop22h 33m
Deal found 9/1![United Airlines logo]()
$1,422
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Fri 2/1911:00 am -
1 stop27h 00m
Sun 2/2811:50 am -
1 stop27h 05m
Deal found 8/31![United Airlines logo]()
$1,430
This Air New Zealand deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/109:13 am -
3 stops30h 22m
Fri 12/259:55 am -
3 stops28h 27m
Deal found 8/28![Multiple Airlines logo]()
$1,850
This oojo deal was found by Cheapflights users on 9/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:12 am -
2 stops42h 28m
Wed 11/116:00 am -
2 stops31h 42m
Deal found 9/1![Qantas Airways logo]()
$2,266
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Wed 10/141:36 pm -
2 stops26h 19m
Wed 10/2110:30 am -
2 stops22h 31m
Deal found 8/30![United Airlines logo]()
$1,515
This Air Canada deal was found by Cheapflights users on 8/31. 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.
Sat 11/74:05 pm -
3 stops54h 50m
Wed 11/113:45 pm -
3 stops63h 41m
Deal found 8/31![Air Canada logo]()
$3,368
This Air New Zealand deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/109:13 am -
3 stops30h 22m
Wed 12/232:05 pm -
3 stops26h 33m
Deal found 8/28![Multiple Airlines logo]()
$1,950
This Air New Zealand deal was found by Cheapflights users on 9/1. 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 Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/116:33 am -
3 stops33h 02m
Thu 12/2411:50 am -
3 stops28h 48m
Deal found 9/1![Multiple Airlines logo]()
$2,049
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated September 2, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Fri 9/254:39 pm -
2 stops23h 51m
Fri 10/210:55 am -
1 stop22h 48m
Deal found 8/28![United Airlines logo]()
$1,265
This oojo deal was found by Cheapflights users on 8/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:34 pm -
1 stop24h 21m
Tue 10/66:50 pm -
1 stop20h 56m
Deal found 8/30![Qantas Airways logo]()
$1,326
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Tue 9/294:39 pm -
2 stops23h 21m
Tue 10/610:30 am -
2 stops24h 13m
Deal found 8/30![United Airlines logo]()
$1,330
This Air Canada deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:10 pm -
2 stops27h 55m
Mon 10/1910:00 am -
2 stops47h 41m
Deal found 8/28![Air Canada logo]()
$1,291
This United Airlines deal was found by Cheapflights users on 8/28. 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 10/127:08 am -
1 stop32h 22m
Mon 10/196:55 am -
2 stops26h 48m
Deal found 8/28![United Airlines logo]()
$1,332
This Delta deal was found by Cheapflights users on 8/31. 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 10/207:20 pm -
2 stops45h 30m
Tue 11/310:10 am -
2 stops27h 59m
Deal found 8/31![Delta logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/2011:10 am -
2 stops30h 05m
Tue 11/312:45 pm -
1 stop22h 20m
Deal found 9/2![United Airlines logo]()
$1,169
This American Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:04 am -
1 stop32h 41m
Tue 11/312:00 pm -
1 stop28h 33m
Deal found 8/29![American Airlines logo]()
$1,302
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/255:55 pm -
1 stop21h 05m
Mon 11/911:50 am -
2 stops26h 09m
Deal found 8/31![United Airlines logo]()
$1,321
This American Airlines deal was found by Cheapflights users on 8/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:40 am -
1 stop31h 20m
Wed 11/1110:45 pm -
2 stops26h 22m
Deal found 8/30![American Airlines logo]()
$1,146
This oojo deal was found by Cheapflights users on 8/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:12 am -
1 stop26h 48m
Wed 11/1110:45 pm -
1 stop38h 57m
Deal found 8/30![Qantas Airways logo]()
$1,316
This Air Canada deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:05 pm -
3 stops55h 30m
Wed 11/116:00 am -
3 stops50h 26m
Deal found 8/29![Multiple Airlines logo]()
$1,335
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 September 2, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Wed 10/141:29 pm -
2 stops27h 01m
Deal found 9/2![United Airlines logo]()
$606
This Kiwi.com deal was found by Cheapflights users on 8/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:53 pm -
3 stops32h 57m
Deal found 8/31![Multiple Airlines logo]()
$808
This Trip.com deal was found by Cheapflights users on 8/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:04 am -
1 stop34h 01m
Deal found 8/31![Qantas Airways logo]()
$819
This Air Canada deal was found by Cheapflights users on 8/31. 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.
Thu 10/1512:10 pm -
2 stops52h 10m
Deal found 8/31![Air Canada logo]()
$854
This Air Canada deal was found by Cheapflights users on 8/31. 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.
Wed 10/142:40 pm -
3 stops29h 00m
Deal found 8/31![Multiple Airlines logo]()
$900
This Air Canada deal was found by Cheapflights users on 8/31. 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.
Wed 10/142:40 pm -
3 stops31h 30m
Deal found 8/31![Multiple Airlines logo]()
$997
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Wed 12/166:00 am -
2 stops34h 30m
Deal found 8/31![United Airlines logo]()
$1,080
This Turkish Airlines deal was found by Cheapflights users on 8/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1610:15 am -
3 stops41h 25m
Deal found 8/29![Multiple Airlines logo]()
$1,131
This oojo deal was found by Cheapflights users on 8/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:04 am -
2 stops47h 01m
Deal found 8/31![Qantas Airways logo]()
$1,456
This Delta deal was found by Cheapflights users on 8/28. 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.
Tue 1/52:15 pm -
2 stops23h 35m
Deal found 8/28![Delta logo]()
$1,986
This oojo deal was found by Cheapflights users on 8/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/510:12 am -
1 stop27h 43m
Deal found 8/31![Qantas Airways logo]()
$2,104
This Emirates deal was found by Cheapflights users on 8/31. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:12 pm -
2 stops40h 08m
Deal found 8/31![Emirates logo]()
$2,419
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 September 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,146 (American Airlines) |
One-way from | $606 (United Airlines) |
Popular in | December |
Cheapest in | July |
Average price | $1,372 |
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 September 2, 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 Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Tue 10/20
7:20 pm-8:50 am
2 stops45h 30m
Melbourne
Tue 11/3
10:10 am-9:09 pm
2 stops27h 59m
$1,165
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Tue 10/27
12:00 pm-7:00 am
2 stops27h 00m
Melbourne
Wed 11/11
10:10 am-9:18 pm
2 stops28h 08m
$1,165
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Tue 10/20
1:29 pm-9:15 am
2 stops27h 46m
Melbourne
Tue 11/3
12:45 pm-8:59 pm
2 stops25h 14m
$1,169
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Tue 10/27
11:00 am-9:30 am
2 stops30h 30m
Melbourne
Wed 11/11
12:45 pm-6:05 pm
1 stop22h 20m
$1,169
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Mon 9/28
1:36 pm-8:15 am
2 stops27h 39m
Melbourne
Mon 10/5
11:55 am-9:21 pm
2 stops25h 26m
$1,170
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Fri 2/26
7:06 pm-10:30 am
1 stop22h 24m
Melbourne
Mon 3/8
12:45 pm-5:53 pm
1 stop22h 08m
$1,215
Quickest round-trip
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Sun 2/14
7:06 pm-7:30 am
1 stop20h 24m
Brisbane
Thu 2/18
11:20 am-5:53 pm
1 stop22h 33m
$1,299
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Mon 10/12
7:08 am-6:30 am
1 stop32h 22m
Brisbane
Mon 10/19
6:55 am-6:43 pm
2 stops26h 48m
$1,332
St. LouisMelbourne
STL Lambert-St Louis - AVV Melbourne Avalon
STLAVV
Lambert-St Louis
Tue 10/27
4:05 pm-3:35 pm
3 stops55h 30m
Melbourne Avalon
Wed 11/11
6:00 am-3:26 pm
3 stops50h 26m
$1,335
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Wed 12/9
1:15 pm-9:05 am
2 stops26h 50m
Sydney Kingsford Smith
Wed 12/23
11:50 am-10:30 pm
2 stops27h 40m
$1,335
Showing 1-10 of 40 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Australia
Have a flexible travel schedule? Discover the best time to fly to Australia from St. Louis with our price prediction graph.
STL-MEL
STL-SYD
STL-AVV
STL-BNE
STL-HBA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Australia
STL-AU0
STL-MEL
STL-SYD
STL-AVV
STL-BNE
What is the cheapest month to book a flight from St. Louis to Australia?
Currently, May is the cheapest month in which you can book a flight from St. Louis to Australia (average of $1,037). Flying from St. Louis to Australia in December is currently the most expensive (average of $1,548). 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 September 2, 2026.
Read reviews from past customers who have flown Qantas Airways,United Airlines, andAmerican Airlines from St. Louis to Australia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.4
Crew
8.1
Entertainment
7.2
Overall
7.5
Boarding
7.7
Food
7.0
Reviews
1 / 20
4.0
OkayRobyn,Aug 2026
LAX - SYD
Comfort
7.4
Crew
8.1
Entertainment
7.2
Overall
7.5
Boarding
7.7
Food
7.0
Reviews
1 / 20
4.0
OkayRobyn,Aug 2026
LAX - SYD
Comfort
7.4
Crew
8.1
Entertainment
7.2
Overall
7.5
Boarding
7.7
Food
7.0
Reviews
1 / 20
4.0
OkayRobyn,Aug 2026
LAX - SYD
Comfort
7.4
Crew
8.1
Entertainment
7.2
Overall
7.5
Boarding
7.7
Food
7.0
Reviews
1 / 20
4.0
OkayRobyn,Aug 2026
LAX - SYD
Comfort
7.4
Crew
8.1
Entertainment
7.2
Overall
7.5
Boarding
7.7
Food
7.0
Reviews
1 / 20
4.0
OkayRobyn,Aug 2026
LAX - SYD
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.
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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 September 2, 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 September 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,407 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,029 | Average$1,364 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,086 | Average$1,450 | FlexibilityNo cancel fee | On-time71% |