$560+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Nov 13 — Nov 201
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 14, 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 14, 2026.
This United Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/87:05 pm -
2 stops26h 15m
Sun 11/1511:20 am -
1 stop26h 55m
Deal found 10/9![United Airlines logo]()
$1,138
This Justfly.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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.
Tue 10/2712:47 pm -
1 stop24h 13m
Wed 11/112:40 pm -
2 stops47h 02m
Deal found 10/10![Qantas Airways logo]()
$1,162
This American Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 10/11![American Airlines logo]()
$1,223
This Qantas Airways deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 11/286:55 pm -
2 stops23h 10m
Sat 12/52:05 pm -
1 stop20h 41m
Deal found 10/14![Qantas Airways logo]()
$1,230
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 10/13![Delta logo]()
$1,242
This United Airlines deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 10/12![United Airlines logo]()
$1,246
This Qantas Airways deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 10/2711:32 am -
2 stops25h 28m
Wed 11/116:00 pm -
3 stops33h 53m
Deal found 10/11![Multiple Airlines logo]()
$1,253
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 10/205:35 pm -
2 stops47h 15m
Tue 11/310:10 am -
2 stops27h 59m
Deal found 10/14![Delta logo]()
$1,256
This oojo deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:10 am -
1 stop29h 15m
Wed 11/1812:00 pm -
2 stops41h 26m
Deal found 10/14![Qantas Airways logo]()
$1,259
This FlightHub deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 stops31h 47m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/10![Qantas Airways logo]()
$1,265
This oojo deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:48 pm -
1 stop23h 07m
Tue 12/86:05 am -
2 stops28h 41m
Deal found 10/13![Qantas Airways logo]()
$1,267
This American Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/812:58 pm -
1 stop23h 02m
Sun 11/1512:00 pm -
1 stop23h 16m
Deal found 10/11![American Airlines logo]()
$1,269
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 14, 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 14, 2026.
This Delta deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 10/12![Delta logo]()
$1,242
This Qantas Airways deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 10/2711:32 am -
2 stops25h 28m
Wed 11/116:00 pm -
3 stops33h 53m
Deal found 10/11![Multiple Airlines logo]()
$1,253
This Qantas Airways deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/276:55 pm -
2 stops23h 35m
Fri 12/49:15 am -
2 stops27h 25m
Deal found 10/13![Qantas Airways logo]()
$1,339
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:15 am -
2 stops34h 35m
Tue 11/178:10 am -
2 stops26h 55m
Deal found 10/13![United Airlines logo]()
$1,358
This Air Canada deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/104:05 pm -
3 stops52h 15m
Tue 11/177:55 am -
3 stops48h 31m
Deal found 10/13![Air Canada logo]()
$1,511
This oojo deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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.
Thu 1/146:15 am -
2 stops33h 20m
Mon 2/17:25 pm -
2 stops44h 09m
Deal found 10/14![Air New Zealand logo]()
$1,565
This Qatar Airways deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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.
Sun 1/171:45 pm -
2 stops47h 00m
Fri 2/125:10 pm -
2 stops43h 17m
Deal found 10/13![Qatar Airways logo]()
$1,622
This Cathay Pacific deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 11/76:44 pm -
2 stops33h 06m
Wed 11/1111:05 am -
2 stops53h 54m
Deal found 10/11![Cathay Pacific logo]()
$1,661
This Qantas Airways deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/276:55 pm -
2 stops23h 35m
Fri 12/49:15 am -
3 stops27h 12m
Deal found 10/13![Multiple Airlines logo]()
$1,344
This United Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/248:30 am -
1 stop29h 30m
Tue 12/111:50 am -
1 stop23h 21m
Deal found 10/10![United Airlines logo]()
$1,367
This Qantas Airways deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 3/72:24 pm -
1 stop23h 31m
Mon 3/229:50 pm -
2 stops42h 06m
Deal found 10/11![Qantas Airways logo]()
$1,416
This United Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 11/254:39 pm -
2 stops23h 41m
Wed 12/29:15 am -
1 stop22h 01m
Deal found 10/11![United Airlines logo]()
$1,367
This Air New Zealand deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 4/124:17 pm -
2 stops25h 28m
Tue 4/277:50 am -
3 stops30h 04m
Deal found 10/13![Multiple Airlines logo]()
$1,427
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 12/227:38 pm -
2 stops67h 22m
Tue 1/1910:10 am -
2 stops39h 02m
Deal found 10/14![Delta logo]()
$1,638
This Cathay Pacific deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 3/77:23 am -
2 stops33h 12m
Mon 3/2211:05 am -
2 stops52h 39m
Deal found 10/11![Cathay Pacific logo]()
$1,661
This Qantas Airways deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 3/116:00 am -
1 stop31h 25m
Thu 3/1811:20 am -
1 stop28h 36m
Deal found 10/11![Qantas Airways logo]()
$1,516
This Air New Zealand deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 3/81:30 pm -
3 stops26h 05m
Wed 3/2411:50 am -
3 stops27h 29m
Deal found 10/13![Multiple Airlines logo]()
$1,430
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 11/118:30 am -
2 stops32h 20m
Wed 11/186:30 am -
2 stops28h 35m
Deal found 10/14![United Airlines logo]()
$1,454
This oojo deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 10/10![Air New Zealand logo]()
$1,917
This Air New Zealand deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/61:30 pm -
3 stops28h 05m
Sun 3/1411:50 am -
2 stops26h 16m
Deal found 10/10![Multiple Airlines logo]()
$1,476
This Qantas Airways deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 2/132:24 pm -
2 stops28h 06m
Wed 2/179:15 am -
2 stops30h 41m
Deal found 10/12![Qantas Airways logo]()
$1,640
This Cathay Pacific deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 1/116:01 am -
2 stops60h 44m
Sun 1/3112:50 am -
2 stops35h 11m
Deal found 10/10![Cathay Pacific logo]()
$1,827
This United Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 11/307:05 pm -
1 stop22h 25m
Mon 1/2512:45 pm -
1 stop22h 32m
Deal found 10/11![United Airlines logo]()
$1,552
This Qatar Airways deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/97:06 pm -
2 stops57h 39m
Fri 11/1310:45 pm -
2 stops35h 34m
Deal found 10/13![Qatar Airways logo]()
$2,076
This lastminute.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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.
Fri 11/272:55 pm -
3 stops41h 45m
Thu 12/31:10 am -
3 stops33h 01m
Deal found 10/13![Air New Zealand logo]()
$1,925
This Air New Zealand deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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.
Wed 11/258:30 am -
3 stops31h 05m
Tue 12/811:50 am -
2 stops23h 51m
Deal found 10/13![Multiple Airlines logo]()
$1,482
This Qantas Airways deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 11/276:55 pm -
2 stops25h 35m
Thu 12/31:10 am -
2 stops32h 46m
Deal found 10/13![Qantas Airways logo]()
$1,705
This United Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/263:00 pm -
2 stops26h 30m
Mon 3/812:45 pm -
1 stop22h 08m
Deal found 10/9![United Airlines logo]()
$1,606
This Cathay Pacific deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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.
Thu 11/266:00 am -
2 stops34h 55m
Wed 12/212:25 am -
2 stops34h 15m
Deal found 10/12![Multiple Airlines logo]()
$1,493
This Qantas Airways deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 51m
Deal found 10/12![Qantas Airways logo]()
$1,713
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated October 14, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated October 14, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 10/12![United Airlines logo]()
$1,246
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 10/205:35 pm -
2 stops47h 15m
Tue 11/310:10 am -
2 stops27h 59m
Deal found 10/14![Delta logo]()
$1,256
This Justfly.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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.
Tue 10/2712:47 pm -
1 stop24h 13m
Wed 11/112:40 pm -
2 stops47h 02m
Deal found 10/10![Qantas Airways logo]()
$1,162
This American Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 10/11![American Airlines logo]()
$1,223
This Delta deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 10/13![Delta logo]()
$1,242
This Qantas Airways deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 10/2711:32 am -
2 stops25h 28m
Wed 11/116:00 pm -
3 stops33h 53m
Deal found 10/11![Multiple Airlines logo]()
$1,253
This United Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/87:05 pm -
2 stops26h 15m
Sun 11/1511:20 am -
1 stop26h 55m
Deal found 10/9![United Airlines logo]()
$1,138
This American Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/812:58 pm -
1 stop23h 02m
Sun 11/1512:00 pm -
1 stop23h 16m
Deal found 10/11![American Airlines logo]()
$1,269
This oojo deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:10 am -
1 stop29h 15m
Wed 11/1812:00 pm -
2 stops41h 26m
Deal found 10/14![Qantas Airways logo]()
$1,259
This oojo deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:48 pm -
1 stop23h 07m
Tue 12/86:05 am -
2 stops28h 41m
Deal found 10/13![Qantas Airways logo]()
$1,267
This Qantas Airways deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 11/286:55 pm -
2 stops23h 10m
Sat 12/52:05 pm -
1 stop20h 41m
Deal found 10/14![Qantas Airways logo]()
$1,230
This FlightHub deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 stops31h 47m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/10![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 14, 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 14, 2026.
This oojo deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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 2/192:24 pm -
2 stops23h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Qantas Airways logo]()
$560
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” 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.
Fri 2/197:02 pm -
3 stops46h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Multiple Airlines logo]()
$753
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 12/223:52 pm -
2 stops45h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Multiple Airlines logo]()
$872
This Kiwi.com deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/237:49 pm -
2 stops44h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$954
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” 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 12/217:49 pm -
3 stops54h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Multiple Airlines logo]()
$969
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/237:49 pm -
2 stops41h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Multiple Airlines logo]()
$971
This Turkish Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” 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 12/166:30 am -
3 stops45h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Turkish Airlines logo]()
$1,027
This Kiwi.com deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 12/223:52 pm -
3 stops50h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$1,098
This Turkish Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 12/166:30 am -
3 stops43h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Turkish Airlines logo]()
$1,122
This Turkish Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” 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 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Multiple Airlines logo]()
$1,129
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 12/227:38 pm -
2 stops67h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Delta logo]()
$1,201
This Kiwi.com deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 12/226:15 am -
2 stops33h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Air New Zealand logo]()
$1,213
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 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,162 (Justfly.com) |
One-way from | $560 (oojo) |
Popular in | December |
Cheapest in | March |
Average price | $1,656 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 14, 2026.
Use the filters below to find and compare flights from St. Louis to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Fri 2/19
2:24 pm-5:50 am
2 stops23h 26m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$560
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Thu 2/18
12:08 pm-6:55 am
1 stop25h 47m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$719
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Mon 3/8
2:27 pm-9:00 am
2 stops25h 33m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$724
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Fri 2/19
7:02 pm-9:45 am
3 stops46h 43m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$753
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Sat 1/23
1:17 pm-9:20 am
3 stops51h 03m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$810
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Wed 12/16
6:30 am-8:45 pm
3 stops45h 15m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$1,027
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
$1,087
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Mon 12/21
4:32 pm-7:45 pm
2 stops58h 13m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$1,161
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Tue 12/22
7:38 pm-8:00 am
2 stops67h 22m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$1,201
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
$1,242
Showing 1-10 of 46 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-CBR
STL-SYD
STL-ADL
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-CBR
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 14, 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.
Entertainment
7.2
Boarding
7.7
Food
7.0
Comfort
7.4
Crew
8.1
Overall
7.5
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Entertainment
7.2
Boarding
7.7
Food
7.0
Comfort
7.4
Crew
8.1
Overall
7.5
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Entertainment
7.2
Boarding
7.7
Food
7.0
Comfort
7.4
Crew
8.1
Overall
7.5
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Entertainment
7.2
Boarding
7.7
Food
7.0
Comfort
7.4
Crew
8.1
Overall
7.5
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Entertainment
7.2
Boarding
7.7
Food
7.0
Comfort
7.4
Crew
8.1
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
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Complete your trip
Complete your trip to Australia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Australia by cabin class
Find flights from St. Louis to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Australia flights
Browse other St. Louis and Australia flight options. Last updated on October 14, 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 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,434 | 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% |