$618+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Nov 24 — Dec 11
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 25, 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 25, 2026.
This FlightHub deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:48 pm -
2 stops48h 32m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/25![Qantas Airways logo]()
$984
This Orbitz deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:40 pm -
2 stops26h 55m
Tue 11/1011:20 am -
3 stops41h 50m
Deal found 10/24![Air Canada logo]()
$1,035
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/261:40 pm -
2 stops26h 55m
Mon 11/911:20 am -
2 stops23h 45m
Deal found 10/21![Multiple Airlines logo]()
$1,042
This Air Canada deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 10/2412:10 pm -
2 stops52h 25m
Wed 11/411:20 am -
2 stops45h 06m
Deal found 10/23![Air Canada logo]()
$1,047
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:40 pm -
2 stops26h 55m
Tue 11/1011:20 am -
2 stops45h 03m
Deal found 10/24![Multiple Airlines logo]()
$1,048
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:40 pm -
2 stops27h 05m
Wed 11/2510:45 am -
2 stops44h 41m
Deal found 10/21![Multiple Airlines logo]()
$1,082
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 10/2412:10 pm -
2 stops52h 25m
Sat 10/3110:20 am -
2 stops46h 03m
Deal found 10/21![Air Canada logo]()
$1,083
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:05 pm -
2 stops48h 30m
Wed 11/2511:20 am -
2 stops45h 06m
Deal found 10/21![Air Canada logo]()
$1,088
This Air Canada deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:55 pm -
2 stops25h 40m
Sun 11/111:20 am -
2 stops22h 37m
Deal found 10/23![Multiple Airlines logo]()
$1,106
This Ovago deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 10/271:40 pm -
2 stops26h 55m
Tue 11/1011:20 am -
1 stop45h 03m
Deal found 10/24![Air New Zealand logo]()
$1,125
This KAYAK deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Wed 10/281:40 pm -
2 stops26h 55m
Tue 11/1011:20 am -
2 stops22h 37m
Deal found 10/24![Air New Zealand logo]()
$1,126
This Air Canada deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/304:05 pm -
3 stops53h 30m
Mon 1/258:00 am -
3 stops48h 26m
Deal found 10/25![Air Canada logo]()
$1,149
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 25, 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 25, 2026.
This Air Canada deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/124:05 pm -
2 stops47h 40m
Sun 3/219:45 am -
2 stops44h 41m
Deal found 10/25![Air Canada logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/182:55 pm -
1 stop23h 05m
Wed 11/259:15 am -
1 stop24h 35m
Deal found 10/21![United Airlines logo]()
$1,199
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:00 am -
2 stops33h 00m
Mon 1/2510:10 am -
2 stops28h 31m
Deal found 10/22![Delta logo]()
$1,204
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 3/122:35 pm -
2 stops23h 15m
Sun 3/211:10 pm -
1 stop25h 49m
Deal found 10/25![American Airlines logo]()
$1,209
This Qantas Airways deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 10/23![Qantas Airways logo]()
$1,412
This Qantas Airways deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 stops26h 17m
Mon 1/258:15 am -
3 stops25h 54m
Deal found 10/24![Multiple Airlines logo]()
$1,482
This Ovago deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/81:18 pm -
2 stops28h 42m
Tue 12/1512:25 pm -
2 stops27h 05m
Deal found 10/24![Air New Zealand logo]()
$1,572
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/182:55 pm -
2 stops24h 35m
Wed 11/2511:20 am -
1 stop26h 55m
Deal found 10/21![United Airlines logo]()
$1,202
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/307:13 am -
2 stops31h 47m
Thu 2/2510:10 am -
2 stops27h 39m
Deal found 10/23![Delta logo]()
$1,255
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 1/2511:30 am -
2 stops22h 24m
Deal found 10/22![United Airlines logo]()
$1,209
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Thu 12/242:15 pm -
2 stops24h 45m
Thu 1/1410:10 am -
2 stops27h 28m
Deal found 10/24![Delta logo]()
$1,296
This Qantas Airways 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 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 2/1210:20 am -
2 stops30h 36m
Deal found 10/20![Qantas Airways logo]()
$1,446
This Air New Zealand deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 10/21![Multiple Airlines logo]()
$1,512
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.
Fri 2/261:08 pm -
3 stops28h 22m
Mon 3/811:30 am -
2 stops22h 39m
Deal found 10/20![United Airlines logo]()
$1,258
This Qantas Airways deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 2/86:01 am -
2 stops45h 34m
Fri 2/124:55 pm -
2 stops42h 18m
Deal found 10/22![Qantas Airways logo]()
$1,458
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/71:17 pm -
3 stops28h 13m
Fri 2/1211:30 am -
2 stops22h 25m
Deal found 10/24![United Airlines logo]()
$1,259
This Qantas Airways deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/146:00 pm -
2 stops24h 05m
Mon 2/111:15 am -
2 stops22h 54m
Deal found 10/22![Multiple Airlines logo]()
$1,565
This Air Canada deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 10/23![Air Canada logo]()
$1,750
This Qantas Airways deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/72:54 pm -
1 stop23h 01m
Wed 11/119:50 pm -
2 stops39h 52m
Deal found 10/23![Qantas Airways logo]()
$1,461
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/2312:28 pm -
2 stops27h 02m
Mon 11/3010:40 am -
2 stops31h 00m
Deal found 10/25![Delta logo]()
$1,503
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 2/128:55 pm -
2 stops37h 22m
Deal found 10/24![United Airlines logo]()
$1,270
This Qantas Airways 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/136:58 pm -
2 stops29h 57m
Wed 2/179:15 am -
2 stops48h 58m
Deal found 10/20![Qantas Airways logo]()
$1,539
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/214:39 pm -
2 stops47h 41m
Sat 11/289:10 am -
1 stop30h 16m
Deal found 10/24![United Airlines logo]()
$1,276
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 10/3011:00 am -
1 stop28h 00m
Thu 11/59:10 am -
1 stop26h 28m
Deal found 10/22![United Airlines logo]()
$1,300
This Air New Zealand deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/138:40 am -
3 stops32h 55m
Sat 1/99:55 am -
3 stops29h 35m
Deal found 10/21![Multiple Airlines logo]()
$1,962
This Qantas Airways 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:54 pm -
2 stops39h 36m
Fri 11/133:25 pm -
2 stops43h 17m
Deal found 10/20![Qantas Airways logo]()
$1,634
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/217:05 pm -
1 stop20h 25m
Sat 11/2811:20 am -
1 stop27h 02m
Deal found 10/24![United Airlines logo]()
$1,332
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.
Mon 2/88:30 am -
2 stops36h 10m
Fri 2/129:20 pm -
2 stops37h 31m
Deal found 10/20![United Airlines logo]()
$1,388
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 12/68:17 am -
1 stop33h 13m
Sat 12/1911:30 am -
2 stops28h 00m
Deal found 10/23![United Airlines logo]()
$1,511
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 -
2 stops29h 40m
Mon 11/163:15 pm -
3 stops40h 50m
Deal found 10/21![United Airlines logo]()
$1,600
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated October 25, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 10/2412:10 pm -
2 stops52h 25m
Wed 11/411:20 am -
2 stops45h 06m
Deal found 10/23![Air Canada logo]()
$1,047
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 10/2412:10 pm -
2 stops52h 25m
Sat 10/3110:20 am -
2 stops46h 03m
Deal found 10/21![Air Canada logo]()
$1,083
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/261:40 pm -
2 stops26h 55m
Mon 11/911:20 am -
2 stops23h 45m
Deal found 10/21![Multiple Airlines logo]()
$1,042
This Air Canada deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:55 pm -
2 stops25h 40m
Sun 11/111:20 am -
2 stops22h 37m
Deal found 10/23![Multiple Airlines logo]()
$1,106
This Orbitz deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:40 pm -
2 stops26h 55m
Tue 11/1011:20 am -
3 stops41h 50m
Deal found 10/24![Air Canada logo]()
$1,035
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:40 pm -
2 stops26h 55m
Tue 11/1011:20 am -
2 stops45h 03m
Deal found 10/24![Multiple Airlines logo]()
$1,048
This Ovago deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 10/271:40 pm -
2 stops26h 55m
Tue 11/1011:20 am -
1 stop45h 03m
Deal found 10/24![Air New Zealand logo]()
$1,125
This KAYAK deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Wed 10/281:40 pm -
2 stops26h 55m
Tue 11/1011:20 am -
2 stops22h 37m
Deal found 10/24![Air New Zealand logo]()
$1,126
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:40 pm -
2 stops27h 05m
Wed 11/2510:45 am -
2 stops44h 41m
Deal found 10/21![Multiple Airlines logo]()
$1,082
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:05 pm -
2 stops48h 30m
Wed 11/2511:20 am -
2 stops45h 06m
Deal found 10/21![Air Canada logo]()
$1,088
This FlightHub deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:48 pm -
2 stops48h 32m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/25![Qantas Airways logo]()
$984
This Air Canada deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/304:05 pm -
3 stops53h 30m
Mon 1/258:00 am -
3 stops48h 26m
Deal found 10/25![Air Canada logo]()
$1,149
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 25, 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 25, 2026.
This oojo deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/57:06 pm -
1 stop19h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Qantas Airways logo]()
$618
This Bravofly 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:44 pm -
1 stop41h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Qantas Airways logo]()
$622
This Qantas Airways deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 10/312:31 pm -
2 stops24h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$622
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/412:00 pm -
2 stops28h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Delta logo]()
$627
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:55 pm -
2 stops24h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$629
This oojo deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/18:47 am -
1 stop27h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Qantas Airways logo]()
$630
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.
Mon 11/306:00 am -
1 stop31h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![American Airlines logo]()
$638
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/112:56 pm -
2 stops27h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![American Airlines logo]()
$639
This Qantas Airways deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/412:58 pm -
3 stops28h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$645
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/310:35 am -
2 stops53h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Delta logo]()
$649
This Trip.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:06 pm -
1 stop19h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Qantas Airways logo]()
$654
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/11:18 pm -
3 stops28h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$672
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 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $984 (FlightHub) |
One-way from | $618 (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 25, 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
Sat 11/21
7:05 pm-7:30 am
1 stop20h 25m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$629
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Thu 11/5
2:55 pm-7:30 am
2 stops24h 35m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$629
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Sat 11/7
9:40 am-7:30 am
2 stops29h 50m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$629
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Thu 11/5
12:58 pm-10:30 am
3 stops29h 32m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$645
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 11/4
8:00 am-7:30 am
1 stop31h 30m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$645
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Tue 12/1
1:18 pm-11:05 am
3 stops28h 47m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$672
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Sat 1/23
6:45 pm-6:20 am
2 stops42h 35m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$783
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Thu 12/10
2:54 pm-6:30 am
1 stop23h 36m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$789
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 12/9
8:10 am-11:00 am
2 stops34h 50m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$876
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Sat 1/2
7:55 pm-7:25 pm
3 stops54h 30m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$968
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-SYD
STL-BNE
STL-HBA
STL-CNS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Australia
STL-AU0
STL-MEL
STL-SYD
STL-BNE
STL-HBA
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 $1,867). 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 25, 2026.
Read reviews from past customers who have flown Qantas Airways,United Airlines, andAir Canada from St. Louis to Australia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Entertainment
7.2
Overall
7.5
Comfort
7.4
Food
7.0
Crew
8.1
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Boarding
7.7
Entertainment
7.2
Overall
7.5
Comfort
7.4
Food
7.0
Crew
8.1
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Boarding
7.7
Entertainment
7.2
Overall
7.5
Comfort
7.4
Food
7.0
Crew
8.1
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Boarding
7.7
Entertainment
7.2
Overall
7.5
Comfort
7.4
Food
7.0
Crew
8.1
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Boarding
7.7
Entertainment
7.2
Overall
7.5
Comfort
7.4
Food
7.0
Crew
8.1
Reviews
1 / 20
8.0
ExcellentJodie,Oct 2026
SYD - GFF
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Australia
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Complete your trip
Complete your trip to Australia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Australia by cabin class
Find flights from St. Louis to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Australia flights
Browse other St. Louis and Australia flight options. Last updated on October 25, 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 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,474 | 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$1,605 | FlexibilityNo cancel fee | On-time71% |