$734+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Nov 2 — Nov 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 October 3, 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 3, 2026.
This Flysmarter deal was found by Cheapflights users on 10/1. 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 Flysmarter 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 -
1 stop23h 15m
Deal found 10/1![Lufthansa logo]()
$1,218
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/2711:32 am -
2 stops25h 28m
Wed 11/1110:45 pm -
2 stops26h 22m
Deal found 9/29![American Airlines logo]()
$1,224
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Sun 10/253:15 pm -
2 stops26h 05m
Mon 11/911:50 am -
2 stops23h 19m
Deal found 10/1![United Airlines logo]()
$1,228
This United Airlines deal was found by Cheapflights users on 9/30. 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 11/17:05 pm -
1 stop21h 15m
Mon 11/99:15 am -
1 stop24h 35m
Deal found 9/30![United Airlines logo]()
$1,238
This United Airlines deal was found by Cheapflights users on 10/1. 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 11/97:05 pm -
1 stop22h 25m
Mon 12/712:45 pm -
1 stop22h 26m
Deal found 10/1![United Airlines logo]()
$1,242
This Delta deal was found by Cheapflights users on 9/28. 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.
Sun 10/252:22 pm -
2 stops24h 58m
Mon 11/910:40 am -
2 stops30h 16m
Deal found 9/28![Delta logo]()
$1,243
This United Airlines deal was found by Cheapflights users on 10/2. 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 10/2![United Airlines logo]()
$1,246
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Sat 11/76:15 am -
2 stops59h 15m
Wed 12/912:45 pm -
1 stop22h 26m
Deal found 10/1![United Airlines logo]()
$1,263
This FlightHub deal was found by Cheapflights users on 10/2. 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 stops33h 27m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/2![Qantas Airways logo]()
$1,265
This FlightHub deal was found by Cheapflights users on 10/2. 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.
Sun 11/18:00 am -
2 stops31h 35m
Sun 11/89:55 am -
2 stops29h 20m
Deal found 10/2![Air New Zealand logo]()
$1,280
This United Airlines deal was found by Cheapflights users on 10/2. 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 11/17:05 pm -
1 stop21h 15m
Sun 11/811:50 am -
1 stop23h 15m
Deal found 10/2![United Airlines logo]()
$1,287
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Tue 10/272:55 pm -
1 stop24h 05m
Thu 11/129:10 am -
1 stop24h 40m
Deal found 9/28![United Airlines logo]()
$1,288
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 3, 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 3, 2026.
This Delta deal was found by Cheapflights users on 10/2. 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 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 10/2![Delta logo]()
$1,242
This United Airlines deal was found by Cheapflights users on 10/1. 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 10/201:29 pm -
2 stops27h 46m
Tue 11/312:45 pm -
2 stops25h 14m
Deal found 10/1![United Airlines logo]()
$1,247
This Qantas Airways deal was found by Cheapflights users on 9/28. 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.
Mon 2/86:00 pm -
1 stop42h 00m
Fri 2/126:00 am -
2 stops34h 48m
Deal found 9/28![Qantas Airways logo]()
$1,419
This Air New Zealand deal was found by Cheapflights users on 10/1. 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.
Tue 10/272:55 pm -
2 stops30h 50m
Wed 11/1112:10 pm -
3 stops26h 30m
Deal found 10/1![Multiple Airlines logo]()
$1,458
This Qatar Airways deal was found by Cheapflights users on 10/2. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1711:31 am -
2 stops37h 19m
Fri 3/54:10 pm -
2 stops48h 48m
Deal found 10/2![Qatar Airways logo]()
$1,462
This Air Canada deal was found by Cheapflights users on 10/2. 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 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 10/2![Air Canada logo]()
$1,763
This oojo deal was found by Cheapflights users on 10/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/215:59 pm -
2 stops48h 26m
Mon 1/115:20 pm -
2 stops41h 27m
Deal found 10/2![Air New Zealand logo]()
$1,917
This Delta deal was found by Cheapflights users on 9/28. 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.
Sun 10/252:22 pm -
2 stops24h 58m
Mon 11/910:40 am -
2 stops30h 16m
Deal found 9/28![Delta logo]()
$1,243
This United Airlines deal was found by Cheapflights users on 10/2. 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 11/13:15 pm -
2 stops25h 05m
Sun 11/89:15 am -
1 stop21h 58m
Deal found 10/2![United Airlines logo]()
$1,287
This United Airlines deal was found by Cheapflights users on 10/2. 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 3/178:30 am -
1 stop31h 00m
Sun 3/2110:20 am -
1 stop26h 35m
Deal found 10/2![United Airlines logo]()
$1,335
This Delta deal was found by Cheapflights users on 10/1. 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.
Fri 3/127:20 am -
2 stops32h 10m
Sun 3/219:35 am -
2 stops30h 01m
Deal found 10/1![Delta logo]()
$1,337
This Air New Zealand deal was found by Cheapflights users on 9/29. 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.
Mon 12/2110:45 am -
3 stops31h 40m
Mon 1/1112:05 pm -
3 stops27h 49m
Deal found 9/29![Multiple Airlines logo]()
$1,487
This United Airlines deal was found by Cheapflights users on 9/30. 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.
Mon 2/88:30 am -
1 stop31h 00m
Fri 2/1211:20 am -
1 stop22h 31m
Deal found 9/30![United Airlines logo]()
$1,336
This Delta deal was found by Cheapflights users on 10/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/173:45 pm -
2 stops24h 45m
Sun 3/219:35 am -
2 stops30h 01m
Deal found 10/2![Delta logo]()
$1,337
This Qantas Airways deal was found by Cheapflights users on 9/29. 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.
Sat 2/132:54 pm -
2 stops36h 21m
Wed 2/179:15 am -
2 stops30h 33m
Deal found 9/29![Qantas Airways logo]()
$1,637
This Cathay Pacific deal was found by Cheapflights users on 10/2. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:58 pm -
2 stops43h 57m
Mon 11/2312:25 am -
2 stops35h 49m
Deal found 10/2![Multiple Airlines logo]()
$1,493
This United Airlines deal was found by Cheapflights users on 9/29. 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 3/128:30 am -
1 stop31h 00m
Sun 3/2110:20 am -
1 stop22h 33m
Deal found 9/29![United Airlines logo]()
$1,336
This Delta deal was found by Cheapflights users on 10/1. 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 11/1610:20 am -
2 stops29h 10m
Mon 11/2310:40 am -
2 stops30h 16m
Deal found 10/1![Delta logo]()
$1,372
This Cathay Pacific deal was found by Cheapflights users on 9/28. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:00 am -
2 stops37h 30m
Mon 1/253:30 pm -
2 stops46h 02m
Deal found 9/28![Multiple Airlines logo]()
$1,515
This Qantas Airways deal was found by Cheapflights users on 9/30. 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 2/83:45 pm -
2 stops27h 40m
Fri 2/121:05 pm -
2 stops51h 43m
Deal found 9/30![Qantas Airways logo]()
$1,707
This United Airlines deal was found by Cheapflights users on 9/30. 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.
Mon 3/88:30 am -
1 stop31h 00m
Sat 3/1311:20 am -
1 stop26h 35m
Deal found 9/30![United Airlines logo]()
$1,336
This Qatar Airways deal was found by Cheapflights users on 9/30. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:21 am -
2 stops42h 24m
Fri 11/1310:45 pm -
2 stops33h 32m
Deal found 9/30![Qatar Airways logo]()
$2,033
This Cathay Pacific deal was found by Cheapflights users on 9/28. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:21 am -
2 stops46h 34m
Mon 11/168:30 am -
2 stops47h 47m
Deal found 9/28![Multiple Airlines logo]()
$1,543
This Delta deal was found by Cheapflights users on 9/29. 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.
Tue 10/132:38 pm -
2 stops25h 12m
Wed 11/1810:40 am -
2 stops29h 42m
Deal found 9/29![Delta logo]()
$1,403
This Ovago deal was found by Cheapflights users on 10/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:28 pm -
3 stops30h 42m
Tue 11/243:20 pm -
2 stops40h 45m
Deal found 10/2![Qantas Airways logo]()
$1,775
This United Airlines deal was found by Cheapflights users on 10/2. 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.
Fri 10/307:05 pm -
1 stop22h 25m
Fri 11/612:45 pm -
1 stop26h 30m
Deal found 10/2![United Airlines logo]()
$1,342
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Sat 11/77:05 pm -
2 stops45h 35m
Wed 11/119:15 am -
1 stop21h 58m
Deal found 10/1![United Airlines logo]()
$1,359
This Ovago deal was found by Cheapflights users on 10/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:06 pm -
2 stops47h 49m
Mon 11/233:40 pm -
3 stops44h 37m
Deal found 10/2![Qantas Airways logo]()
$1,895
This Air New Zealand deal was found by Cheapflights users on 9/28. 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 2/47:30 am -
3 stops43h 20m
Thu 2/2511:50 pm -
3 stops37h 29m
Deal found 9/28![Multiple Airlines logo]()
$1,796
This Qantas Airways deal was found by Cheapflights users on 9/29. 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 11/98:10 am -
2 stops45h 45m
Fri 11/1311:10 pm -
2 stops32h 44m
Deal found 9/29![Qantas Airways logo]()
$2,025
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated October 3, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated October 3, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/2. 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 10/2![United Airlines logo]()
$1,246
This Flysmarter deal was found by Cheapflights users on 10/1. 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 Flysmarter 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 -
1 stop23h 15m
Deal found 10/1![Lufthansa logo]()
$1,218
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Sun 10/253:15 pm -
2 stops26h 05m
Mon 11/911:50 am -
2 stops23h 19m
Deal found 10/1![United Airlines logo]()
$1,228
This Delta deal was found by Cheapflights users on 9/28. 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.
Sun 10/252:22 pm -
2 stops24h 58m
Mon 11/910:40 am -
2 stops30h 16m
Deal found 9/28![Delta logo]()
$1,243
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/2711:32 am -
2 stops25h 28m
Wed 11/1110:45 pm -
2 stops26h 22m
Deal found 9/29![American Airlines logo]()
$1,224
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Tue 10/272:55 pm -
1 stop24h 05m
Thu 11/129:10 am -
1 stop24h 40m
Deal found 9/28![United Airlines logo]()
$1,288
This United Airlines deal was found by Cheapflights users on 9/30. 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 11/17:05 pm -
1 stop21h 15m
Mon 11/99:15 am -
1 stop24h 35m
Deal found 9/30![United Airlines logo]()
$1,238
This FlightHub deal was found by Cheapflights users on 10/2. 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.
Sun 11/18:00 am -
2 stops31h 35m
Sun 11/89:55 am -
2 stops29h 20m
Deal found 10/2![Air New Zealand logo]()
$1,280
This United Airlines deal was found by Cheapflights users on 10/2. 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 11/13:15 pm -
2 stops25h 05m
Sun 11/89:15 am -
1 stop21h 58m
Deal found 10/2![United Airlines logo]()
$1,287
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Sat 11/76:15 am -
2 stops59h 15m
Wed 12/912:45 pm -
1 stop22h 26m
Deal found 10/1![United Airlines logo]()
$1,263
This United Airlines deal was found by Cheapflights users on 10/1. 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 11/97:05 pm -
1 stop22h 25m
Mon 12/712:45 pm -
1 stop22h 26m
Deal found 10/1![United Airlines logo]()
$1,242
This FlightHub deal was found by Cheapflights users on 10/2. 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 stops33h 27m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/2![Qantas Airways logo]()
$1,265
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 3, 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 3, 2026.
This United Airlines deal was found by Cheapflights users on 10/2. 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 10/1411:10 am -
2 stops54h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![United Airlines logo]()
$734
This Delta deal was found by Cheapflights users on 9/28. 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 10/1312:00 pm -
2 stops27h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Delta logo]()
$748
This Bravofly deal was found by Cheapflights users on 9/28. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:04 am -
1 stop34h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Qantas Airways logo]()
$752
This Delta deal was found by Cheapflights users on 9/28. 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.
Mon 10/127:45 am -
2 stops32h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Delta logo]()
$753
This Delta deal was found by Cheapflights users on 10/1. 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.
Wed 10/1410:14 am -
2 stops30h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Delta logo]()
$838
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:53 pm -
3 stops47h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$876
This Cathay Pacific deal was found by Cheapflights users on 10/1. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:04 am -
2 stops37h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Multiple Airlines logo]()
$900
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:02 am -
3 stops35h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$932
This Turkish Airlines deal was found by Cheapflights users on 9/28. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:55 am -
3 stops41h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$963
This Turkish Airlines deal was found by Cheapflights users on 9/29. 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 12/165:25 am -
3 stops46h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$980
This Cathay Pacific deal was found by Cheapflights users on 10/2. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:04 am -
3 stops42h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Multiple Airlines logo]()
$987
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/126:00 am -
2 stops34h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$989
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 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,218 (Flysmarter) |
One-way from | $734 (United Airlines) |
Popular in | December |
Cheapest in | July |
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 3, 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
Wed 10/14
11:10 am-9:15 am
2 stops54h 05m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$734
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Wed 10/14
10:14 am-8:50 am
2 stops30h 36m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$838
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Mon 10/12
5:53 pm-9:00 am
3 stops47h 07m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$876
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Tue 10/13
6:04 am-10:50 am
2 stops37h 46m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$900
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 10/14
6:04 am-10:50 am
2 stops37h 46m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$900
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Sun 10/11
10:55 am-8:10 pm
3 stops41h 15m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$963
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Wed 12/16
5:25 am-8:45 pm
3 stops46h 20m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$980
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Wed 10/14
6:04 am-4:50 pm
3 stops42h 46m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$987
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Mon 10/12
6:00 am-8:00 am
2 stops34h 00m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$989
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Tue 10/13
6:04 am-3:40 pm
3 stops42h 36m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$1,009
Showing 1-10 of 50 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-CNS
STL-ADL
STL-SYD
STL-BNE
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-CNS
STL-ADL
STL-SYD
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 $975). Flying from St. Louis to Australia in December is currently the most expensive (average of $1,806). 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 3, 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.
Overall
7.5
Entertainment
7.2
Crew
8.1
Comfort
7.4
Boarding
7.7
Food
7.0
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Overall
7.5
Entertainment
7.2
Crew
8.1
Comfort
7.4
Boarding
7.7
Food
7.0
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Overall
7.5
Entertainment
7.2
Crew
8.1
Comfort
7.4
Boarding
7.7
Food
7.0
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Overall
7.5
Entertainment
7.2
Crew
8.1
Comfort
7.4
Boarding
7.7
Food
7.0
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Overall
7.5
Entertainment
7.2
Crew
8.1
Comfort
7.4
Boarding
7.7
Food
7.0
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
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 3, 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 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,412 | 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$1,566 | FlexibilityNo cancel fee | On-time71% |