$693+ 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 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Nov 8 — Nov 151
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Australia with Cheapflights
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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
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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 9, 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 9, 2026.
This FlightHub deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:48 pm -
2 stops33h 27m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/7![Qantas Airways logo]()
$1,083
This lastminute.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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.
Sun 10/256:04 am -
1 stop34h 56m
Mon 11/911:10 am -
1 stop26h 32m
Deal found 10/7![Qantas Airways logo]()
$1,202
This oojo deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 10/2712:47 pm -
1 stop24h 13m
Wed 11/117:45 am -
2 stops27h 31m
Deal found 10/7![Qantas Airways logo]()
$1,222
This American Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 10/7![American Airlines logo]()
$1,223
This United Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:39 pm -
2 stops24h 01m
Mon 11/99:15 am -
2 stops24h 44m
Deal found 10/7![United Airlines logo]()
$1,233
This United Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 11/34:39 pm -
2 stops23h 41m
Tue 11/1011:20 am -
2 stops23h 45m
Deal found 10/4![United Airlines logo]()
$1,237
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 10/6![Delta logo]()
$1,241
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.
Tue 10/201:29 pm -
2 stops27h 46m
Tue 11/312:45 pm -
2 stops25h 14m
Deal found 10/9![United Airlines logo]()
$1,246
This Qantas Airways 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 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 10/9![Multiple Airlines logo]()
$1,253
This American Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” 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 10/1310:12 am -
2 stops27h 48m
Thu 10/228:35 pm -
2 stops29h 15m
Deal found 10/8![American Airlines logo]()
$1,258
This FlightHub deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 11/306:15 am -
2 stops35h 40m
Mon 1/253:00 pm -
2 stops48h 34m
Deal found 10/7![Air New Zealand logo]()
$1,322
This oojo deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 11/187:06 pm -
1 stop19h 24m
Wed 11/255:00 am -
2 stops29h 05m
Deal found 10/4![Qantas Airways logo]()
$1,332
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 9, 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 9, 2026.
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/128:30 am -
1 stop31h 00m
Sun 3/2110:20 am -
1 stop22h 33m
Deal found 10/8![United Airlines logo]()
$1,116
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/129:00 am -
2 stops30h 30m
Sun 3/219:35 am -
2 stops30h 01m
Deal found 10/9![Delta logo]()
$1,117
This Qantas Airways deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” 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 3/36:58 pm -
1 stop19h 32m
Sun 3/143:20 pm -
2 stops41h 51m
Deal found 10/8![Qantas Airways logo]()
$1,209
This American Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/136:58 pm -
1 stop19h 32m
Sun 3/281:05 pm -
1 stop25h 51m
Deal found 10/4![American Airlines logo]()
$1,290
This Air New Zealand deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 2/287:33 am -
3 stops31h 27m
Wed 3/108:20 am -
3 stops28h 53m
Deal found 10/6![Multiple Airlines logo]()
$1,314
This Air Canada deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” 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 10/5![Air Canada logo]()
$1,762
This oojo deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 10/4![Air New Zealand logo]()
$1,917
This Qatar Airways deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:21 am -
2 stops42h 24m
Fri 11/1310:45 pm -
2 stops33h 32m
Deal found 10/4![Qatar Airways logo]()
$2,107
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” 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 3/67:06 pm -
1 stop20h 24m
Sun 3/1410:20 am -
1 stop26h 35m
Deal found 10/8![United Airlines logo]()
$1,116
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” 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 3/67:06 pm -
1 stop20h 24m
Sat 3/1311:20 am -
2 stops24h 09m
Deal found 10/8![United Airlines logo]()
$1,120
This Qantas Airways deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 3/82:54 pm -
1 stop23h 01m
Sat 3/206:05 am -
2 stops23h 59m
Deal found 10/4![Qantas Airways logo]()
$1,359
This Qantas Airways deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 4/57:50 pm -
3 stops43h 40m
Mon 4/1912:00 pm -
1 stop20h 21m
Deal found 10/7![Multiple Airlines logo]()
$1,368
This United Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 11/36:15 am -
1 stop31h 45m
Tue 11/1011:50 am -
1 stop23h 15m
Deal found 10/4![United Airlines logo]()
$1,237
This Qantas Airways deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 10/6![Qantas Airways logo]()
$1,418
This Air New Zealand deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 3/810:20 am -
3 stops29h 59m
Deal found 10/7![Multiple Airlines logo]()
$1,507
This United Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 10/6![United Airlines logo]()
$1,246
This Qantas Airways deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 2/236:58 pm -
2 stops27h 37m
Tue 3/912:00 pm -
1 stop23h 13m
Deal found 10/6![Qantas Airways logo]()
$1,585
This United deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:30 am -
2 stops44h 10m
Sun 12/137:55 pm -
2 stops43h 05m
Deal found 10/7![Multiple Airlines logo]()
$1,591
This BYOjet deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/116:15 am -
2 stops36h 10m
Mon 4/128:00 pm -
2 stops36h 23m
Deal found 10/4![Air New Zealand logo]()
$1,932
This United Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 3/137:06 pm -
1 stop20h 24m
Tue 3/2310:20 am -
1 stop22h 33m
Deal found 10/6![United Airlines logo]()
$1,335
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” 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 3/78:30 am -
1 stop31h 00m
Sat 3/1311:20 am -
1 stop26h 35m
Deal found 10/8![United Airlines logo]()
$1,336
This Qantas Airways deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” 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 10/8![Qantas Airways logo]()
$1,640
This Air New Zealand deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:55 pm -
2 stops28h 00m
Wed 11/1112:10 pm -
3 stops26h 30m
Deal found 10/5![Multiple Airlines logo]()
$1,721
This United Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/88:30 am -
1 stop31h 00m
Fri 2/1211:20 am -
2 stops21h 46m
Deal found 10/4![United Airlines logo]()
$1,340
This Qantas Airways deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” 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 10/5![Qantas Airways logo]()
$1,712
This United Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:05 pm -
2 stops45h 35m
Wed 11/119:15 am -
1 stop21h 58m
Deal found 10/4![United Airlines logo]()
$1,358
This Air New Zealand deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 1/1110:45 am -
3 stops31h 40m
Mon 4/1212:05 pm -
2 stops24h 31m
Deal found 10/7![Multiple Airlines logo]()
$1,855
This Qantas Airways deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:10 am -
1 stop31h 50m
Wed 11/1111:10 am -
1 stop26h 32m
Deal found 10/5![Qantas Airways logo]()
$1,833
This Orbitz deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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.
Wed 10/218:55 am -
3 stops40h 00m
Sun 10/257:05 pm -
3 stops60h 18m
Deal found 10/4![Multiple Airlines logo]()
$1,878
This Air Canada deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 10/4![Air Canada logo]()
$3,212
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated October 9, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” 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 10/1310:12 am -
2 stops27h 48m
Thu 10/228:35 pm -
2 stops29h 15m
Deal found 10/8![American Airlines logo]()
$1,258
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.
Tue 10/201:29 pm -
2 stops27h 46m
Tue 11/312:45 pm -
2 stops25h 14m
Deal found 10/9![United Airlines logo]()
$1,246
This lastminute.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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.
Sun 10/256:04 am -
1 stop34h 56m
Mon 11/911:10 am -
1 stop26h 32m
Deal found 10/7![Qantas Airways logo]()
$1,202
This United Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:55 pm -
1 stop21h 05m
Mon 11/911:50 am -
2 stops26h 09m
Deal found 10/7![United Airlines logo]()
$1,233
This oojo deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 10/2712:47 pm -
1 stop24h 13m
Wed 11/117:45 am -
2 stops27h 31m
Deal found 10/7![Qantas Airways logo]()
$1,222
This American Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 10/7![American Airlines logo]()
$1,223
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 10/6![Delta logo]()
$1,241
This Qantas Airways deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” 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 10/8![Multiple Airlines logo]()
$1,253
This United Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 11/32:55 pm -
2 stops25h 10m
Tue 11/109:15 am -
1 stop21h 58m
Deal found 10/4![United Airlines logo]()
$1,237
This oojo deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 11/187:06 pm -
1 stop19h 24m
Wed 11/255:00 am -
2 stops29h 05m
Deal found 10/4![Qantas Airways logo]()
$1,332
This FlightHub deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:48 pm -
2 stops33h 27m
Mon 1/2510:45 pm -
1 stop41h 51m
Deal found 10/7![Qantas Airways logo]()
$1,083
This FlightHub deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 11/306:15 am -
2 stops35h 40m
Mon 1/253:00 pm -
2 stops48h 34m
Deal found 10/7![Air New Zealand logo]()
$1,322
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 9, 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 9, 2026.
This oojo deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 11/214:31 pm -
1 stop21h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Qantas Airways logo]()
$693
This United Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 11/217:30 am -
2 stops32h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![United Airlines logo]()
$707
This oojo deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” 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 3/812:08 pm -
1 stop25h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Qantas Airways logo]()
$712
This Qantas Airways deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 2/211:22 am -
3 stops29h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$723
This Qantas Airways deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” 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 3/82:27 pm -
2 stops25h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$724
This SmartFares deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/17:00 am -
2 stops34h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$739
This oojo deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” 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 10/2112:47 pm -
2 stops29h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Qantas Airways logo]()
$759
This Qantas Airways deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” 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 10/213:20 pm -
3 stops29h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$765
This Qantas Airways deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” 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 12/236:01 am -
2 stops39h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Qantas Airways logo]()
$766
This Kiwi.com deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” 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 1/123:54 pm -
3 stops52h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Multiple Airlines logo]()
$771
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” 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 11/213:04 pm -
3 stops51h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$778
This Orbitz deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” 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.
Mon 3/87:00 am -
3 stops33h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Air Canada logo]()
$826
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 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,083 (FlightHub) |
One-way from | $693 (oojo) |
Popular in | December |
Cheapest in | July |
Average price | $1,656 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 9, 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
Tue 2/2
3:45 pm-6:30 am
1 stop22h 45m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$693
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Tue 2/2
10:27 am-6:30 am
2 stops28h 03m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$707
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Mon 3/8
12:08 pm-6:55 am
1 stop25h 47m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$712
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Tue 2/2
11:22 am-9:10 am
3 stops29h 48m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$723
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. LouisPerth
STL Lambert-St Louis - PER Perth
STLPER
Lambert-St Louis
Thu 4/1
7:00 am-6:50 am
2 stops34h 50m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$739
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 10/21
12:47 pm-9:05 am
2 stops29h 18m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$759
St. LouisBrisbane
STL Lambert-St Louis - BNE Brisbane
STLBNE
Lambert-St Louis
Wed 10/21
3:20 pm-12:15 pm
3 stops29h 55m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$765
St. LouisPerth
STL Lambert-St Louis - PER Perth
STLPER
Lambert-St Louis
Tue 1/12
3:54 pm-10:50 am
3 stops52h 56m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$771
St. LouisMelbourne
STL Lambert-St Louis - MEL Melbourne
STLMEL
Lambert-St Louis
Wed 10/14
10:27 am-9:15 am
2 stops30h 48m
Melbourne
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$836
Showing 1-10 of 60 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-BNE
STL-SYD
STL-PER
STL-MEL
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-BNE
STL-SYD
STL-PER
STL-MEL
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 9, 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.
Crew
8.1
Food
7.0
Boarding
7.7
Overall
7.5
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Crew
8.1
Food
7.0
Boarding
7.7
Overall
7.5
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Crew
8.1
Food
7.0
Boarding
7.7
Overall
7.5
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Crew
8.1
Food
7.0
Boarding
7.7
Overall
7.5
Comfort
7.4
Entertainment
7.2
Reviews
1 / 20
6.0
GoodBrian,Sep 2026
HID - CNS
Crew
8.1
Food
7.0
Boarding
7.7
Overall
7.5
Comfort
7.4
Entertainment
7.2
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.
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Find flights from St. Louis to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Australia flights
Browse other St. Louis and Australia flight options. Last updated on October 9, 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 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,412 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,029 | Average$1,376 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,233 | Average$1,566 | FlexibilityNo cancel fee | On-time71% |