$717+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Nov 19 — Nov 261
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 20, 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 20, 2026.
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 10/20![American Airlines logo]()
$1,185
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 10/20![American Airlines logo]()
$1,190
This oojo deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:32 am -
1 stop30h 28m
Wed 11/1110:45 pm -
1 stop38h 57m
Deal found 10/20![Qantas Airways logo]()
$1,191
This oojo deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 10/2812:47 pm -
1 stop26h 08m
Wed 11/411:10 am -
1 stop26h 32m
Deal found 10/19![Qantas Airways logo]()
$1,197
This lastminute.com deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:10 pm -
1 stop41h 50m
Tue 11/1012:00 pm -
1 stop22h 55m
Deal found 10/17![Qantas Airways logo]()
$1,198
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 10/20![United Airlines logo]()
$1,208
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:17 pm -
2 stops26h 13m
Mon 1/257:00 am -
2 stops27h 09m
Deal found 10/19![American Airlines logo]()
$1,215
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 12/26:00 am -
2 stops33h 30m
Wed 12/911:20 am -
2 stops25h 37m
Deal found 10/18![United Airlines logo]()
$1,220
This oojo deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 10/263:20 pm -
1 stop23h 35m
Sun 11/12:05 pm -
1 stop21h 11m
Deal found 10/19![Qantas Airways logo]()
$1,225
This Qantas Airways deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:54 pm -
1 stop23h 01m
Mon 11/237:20 am -
2 stops22h 06m
Deal found 10/17![Qantas Airways logo]()
$1,238
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/263:20 pm -
2 stops25h 40m
Sun 11/111:15 am -
2 stops24h 01m
Deal found 10/19![American Airlines logo]()
$1,249
This Qantas Airways deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 11/1611:35 am -
2 stops26h 20m
Mon 11/237:20 am -
2 stops22h 06m
Deal found 10/17![Multiple Airlines logo]()
$1,283
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 20, 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 20, 2026.
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Fri 3/126:00 am -
1 stop31h 50m
Sun 3/211:10 pm -
1 stop25h 46m
Deal found 10/19![American Airlines logo]()
$1,213
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 12/210:45 am -
2 stops28h 45m
Wed 12/911:20 am -
1 stop22h 51m
Deal found 10/18![United Airlines logo]()
$1,220
This oojo deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 10/17![Qantas Airways logo]()
$1,237
This Qantas Airways deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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 1/299:41 am -
3 stops27h 44m
Sat 5/159:10 am -
3 stops25h 20m
Deal found 10/15![Multiple Airlines logo]()
$1,238
This Air Canada deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/88:52 am -
2 stops31h 53m
Fri 2/1210:45 am -
2 stops44h 41m
Deal found 10/19![Air Canada logo]()
$1,245
This KAYAK deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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.
Sun 11/18:15 pm -
2 stops60h 40m
Mon 11/168:30 am -
2 stops46h 13m
Deal found 10/15![Cathay Pacific logo]()
$1,530
This BusinessClass deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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.
Sun 11/1511:00 am -
3 stops56h 40m
Sat 11/2112:00 pm -
2 stops49h 45m
Deal found 10/15![Air New Zealand logo]()
$1,771
This Qatar Airways deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 11/98:29 am -
2 stops44h 16m
Fri 11/1310:45 pm -
2 stops38h 48m
Deal found 10/17![Qatar Airways logo]()
$2,107
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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 3/61:30 pm -
2 stops26h 00m
Mon 3/1510:20 am -
1 stop26h 35m
Deal found 10/15![United Airlines logo]()
$1,220
This Qantas Airways deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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 3/42:24 pm -
1 stop23h 31m
Sat 3/136:05 am -
2 stops24h 34m
Deal found 10/15![Qantas Airways logo]()
$1,239
This Qantas Airways deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/243:45 pm -
1 stop22h 10m
Sat 2/611:05 am -
3 stops25h 56m
Deal found 10/18![Multiple Airlines logo]()
$1,239
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Fri 2/266:00 am -
1 stop34h 30m
Mon 3/810:45 pm -
2 stops27h 39m
Deal found 10/19![American Airlines logo]()
$1,245
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 2/83:10 pm -
2 stops25h 20m
Fri 2/1212:00 pm -
2 stops45h 44m
Deal found 10/19![United Airlines logo]()
$1,272
This Qantas Airways deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:48 pm -
2 stops25h 42m
Mon 1/2510:40 am -
2 stops23h 29m
Deal found 10/17![Multiple Airlines logo]()
$1,293
This Qantas Airways deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 12/12:48 pm -
2 stops26h 47m
Tue 12/810:00 am -
2 stops24h 46m
Deal found 10/17![Qantas Airways logo]()
$1,316
This Air Canada deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/84:05 pm -
3 stops58h 40m
Fri 2/128:25 pm -
3 stops60h 01m
Deal found 10/19![Air Canada logo]()
$1,591
This Qantas Airways deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 3/811:56 am -
2 stops25h 59m
Thu 3/186:55 am -
2 stops22h 44m
Deal found 10/18![Multiple Airlines logo]()
$1,333
This Cathay Pacific deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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.
Sat 11/77:26 am -
2 stops33h 09m
Wed 11/1110:20 pm -
2 stops39h 02m
Deal found 10/17![Cathay Pacific logo]()
$1,660
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/88:30 am -
2 stops36h 10m
Fri 2/129:20 pm -
2 stops37h 31m
Deal found 10/19![United Airlines logo]()
$1,387
This Qantas Airways deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/83:45 pm -
1 stop22h 45m
Fri 2/121:10 pm -
1 stop26h 46m
Deal found 10/19![Qantas Airways logo]()
$1,411
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/88:30 am -
2 stops31h 00m
Fri 2/1211:20 am -
1 stop22h 31m
Deal found 10/15![United Airlines logo]()
$1,440
This Air New Zealand deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 2/267:33 am -
3 stops32h 22m
Mon 3/812:10 pm -
3 stops26h 42m
Deal found 10/17![Multiple Airlines logo]()
$1,467
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Thu 12/31:43 pm -
3 stops30h 47m
Wed 12/91:10 am -
2 stops35h 00m
Deal found 10/19![American Airlines logo]()
$1,835
This Qantas Airways deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates ” 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 12/216:57 pm -
2 stops47h 58m
Tue 1/193:00 pm -
2 stops44h 30m
Deal found 10/19![Qantas Airways logo]()
$1,552
This Booking.com deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/141:40 pm -
3 stops34h 25m
Sat 11/217:05 am -
3 stops28h 04m
Deal found 10/17![Air Canada logo]()
$1,888
This Qantas Airways deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:58 pm -
3 stops28h 07m
Sat 11/216:20 am -
2 stops23h 06m
Deal found 10/17![Multiple Airlines logo]()
$1,538
This Qantas Airways deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 12/226:57 pm -
2 stops48h 08m
Fri 1/1510:45 pm -
1 stop41h 51m
Deal found 10/19![Qantas Airways logo]()
$1,571
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:05 pm -
2 stops50h 15m
Fri 11/1310:55 pm -
3 stops33h 10m
Deal found 10/19![United Airlines logo]()
$1,650
This Air New Zealand deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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 3/41:30 pm -
3 stops26h 05m
Sat 3/1311:50 am -
3 stops28h 29m
Deal found 10/15![Multiple Airlines logo]()
$1,580
This Jetabroad deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:05 pm -
3 stops27h 10m
Sat 11/216:20 am -
3 stops32h 55m
Deal found 10/16![Air New Zealand logo]()
$2,594
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated October 20, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated October 20, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 10/2010:12 am -
2 stops28h 33m
Tue 11/312:00 pm -
1 stop25h 19m
Deal found 10/19![American Airlines logo]()
$1,185
This lastminute.com deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:10 pm -
1 stop41h 50m
Tue 11/1012:00 pm -
1 stop22h 55m
Deal found 10/17![Qantas Airways logo]()
$1,198
This oojo deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 10/263:20 pm -
1 stop23h 35m
Sun 11/12:05 pm -
1 stop21h 11m
Deal found 10/19![Qantas Airways logo]()
$1,225
This United Airlines deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 10/261:08 pm -
3 stops27h 22m
Tue 11/1012:45 pm -
2 stops23h 38m
Deal found 10/17![United Airlines logo]()
$1,236
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/263:20 pm -
2 stops25h 40m
Sun 11/111:15 am -
2 stops24h 01m
Deal found 10/19![American Airlines logo]()
$1,249
This American Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 10/18![American Airlines logo]()
$1,223
This KAYAK deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 10/275:40 am -
1 stop31h 20m
Wed 11/1110:45 pm -
1 stop38h 57m
Deal found 10/19![Qantas Airways logo]()
$1,228
This oojo deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 10/2812:47 pm -
1 stop26h 08m
Wed 11/411:10 am -
1 stop26h 32m
Deal found 10/19![Qantas Airways logo]()
$1,197
This Qantas Airways deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:54 pm -
1 stop23h 01m
Mon 11/237:20 am -
2 stops22h 06m
Deal found 10/17![Qantas Airways logo]()
$1,238
This Qantas Airways deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 11/1611:35 am -
2 stops26h 20m
Mon 11/237:20 am -
2 stops22h 06m
Deal found 10/17![Multiple Airlines logo]()
$1,283
This oojo deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/296:00 am -
1 stop34h 00m
Sun 12/66:05 am -
2 stops29h 21m
Deal found 10/15![Qantas Airways logo]()
$1,355
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:17 pm -
2 stops26h 13m
Mon 1/257:00 am -
2 stops27h 09m
Deal found 10/19![American Airlines logo]()
$1,215
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 20, 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 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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 12/16:00 am -
2 stops43h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Multiple Airlines logo]()
$717
This oojo deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/16:01 am -
1 stop31h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Qantas Airways logo]()
$721
This oojo deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/202:24 pm -
1 stop23h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Qantas Airways logo]()
$729
This Qantas Airways deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 2/209:01 am -
3 stops28h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$741
This American Airlines deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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.
Fri 1/11:51 pm -
2 stops23h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![American Airlines logo]()
$750
This American Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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.
Wed 12/302:50 pm -
2 stops23h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![American Airlines logo]()
$751
This Kiwi.com deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/107:02 pm -
3 stops47h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$767
This Kiwi.com deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 2/86:01 am -
3 stops56h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$771
This Cathay Pacific deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 11/308:12 pm -
2 stops47h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Multiple Airlines logo]()
$778
This Kiwi.com deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/63:54 pm -
3 stops52h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$778
This Kiwi.com deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 2/93:54 pm -
2 stops50h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$790
This Cathay Pacific deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 2/107:21 am -
2 stops49h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Cathay Pacific logo]()
$802
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 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,163 (oojo) |
One-way from | $717 (Kiwi.com) |
Popular in | December |
Cheapest in | March |
Average price | $1,656 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 20, 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
Fri 1/1
6:01 am-5:50 am
1 stop31h 49m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$721
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Sat 2/20
6:58 pm-11:45 am
2 stops23h 47m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$731
St. LouisCairns
STL Lambert-St Louis - CNS Cairns
STLCNS
Lambert-St Louis
Tue 12/1
1:14 pm-10:30 am
3 stops29h 16m
Cairns
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$734
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Sat 2/20
9:01 am-6:25 am
3 stops28h 24m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$741
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Fri 1/1
1:51 pm-5:50 am
2 stops23h 59m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$750
Quickest round-trip
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 12/30
2:50 pm-5:50 am
2 stops23h 00m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$751
St. LouisPerth
STL Lambert-St Louis - PER Perth
STLPER
Lambert-St Louis
Wed 2/10
7:02 pm-8:25 am
3 stops47h 23m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$767
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Mon 11/30
8:12 pm-12:30 pm
2 stops47h 18m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$778
St. LouisPerth
STL Lambert-St Louis - PER Perth
STLPER
Lambert-St Louis
Mon 2/8
3:54 pm-8:25 am
2 stops50h 31m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$782
St. LouisPerth
STL Lambert-St Louis - PER Perth
STLPER
Lambert-St Louis
Wed 2/10
7:21 am-10:55 pm
2 stops49h 34m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$802
Showing 1-10 of 55 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Australia
Have a flexible travel schedule? Discover the best time to fly to Australia from St. Louis with our price prediction graph.
STL-MEL
STL-SYD
STL-BNE
STL-CNS
STL-PER
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Australia
STL-AU0
STL-MEL
STL-SYD
STL-BNE
STL-CNS
What is the cheapest month to book a flight from St. Louis to Australia?
Currently, May is the cheapest month in which you can book a flight from St. Louis to Australia (average of $967). Flying from St. Louis to Australia in December is currently the most expensive (average of $1,806). 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 20, 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.
Comfort
7.4
Food
7.0
Entertainment
7.2
Crew
8.1
Boarding
7.7
Overall
7.5
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Comfort
7.4
Food
7.0
Entertainment
7.2
Crew
8.1
Boarding
7.7
Overall
7.5
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Comfort
7.4
Food
7.0
Entertainment
7.2
Crew
8.1
Boarding
7.7
Overall
7.5
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Comfort
7.4
Food
7.0
Entertainment
7.2
Crew
8.1
Boarding
7.7
Overall
7.5
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Comfort
7.4
Food
7.0
Entertainment
7.2
Crew
8.1
Boarding
7.7
Overall
7.5
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 20, 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 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,477 | 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$1,596 | FlexibilityNo cancel fee | On-time71% |