$511+ Cheap flights from St. Louis (STL) to Australia
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Apr 6 — Apr 131
Round-trip
1 adult, Economy
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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 March 7, 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 March 7, 2026.
This Air Canada deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/222:20 pm
STL
- BNE
2 stops25h 45m
Air Canada
Thu 6/410:15 am
BNE
- STL
2 stops25h 10m
Air Canada
Deal found 3/3![Air Canada logo]()
$900
This Air Canada deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/222:20 pm
STL
- BNE
3 stops30h 45m
Multiple Airlines
Thu 6/410:15 am
BNE
- STL
2 stops25h 10m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$963
This Air Canada deal was found by Cheapflights users on 3/6. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/214:05 pm
STL
- BNE
2 stops48h 00m
Air Canada
Tue 4/2810:00 am
BNE
- STL
2 stops44h 25m
Air Canada
Deal found 3/6![Air Canada logo]()
$993
This American Airlines deal was found by Cheapflights users on 3/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/192:37 pm
STL
- BNE
2 stops23h 23m
American Airlines
Sun 4/268:35 pm
BNE
- STL
2 stops26h 49m
American Airlines
Deal found 3/5![American Airlines logo]()
$1,041
This American Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/226:36 am
STL
- BNE
1 stop31h 24m
American Airlines
Thu 6/48:35 pm
BNE
- STL
2 stops26h 58m
American Airlines
Deal found 3/3![American Airlines logo]()
$1,066
This lastminute.com deal was found by Cheapflights users on 3/5. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:38 am
STL
- SYD
2 stops35h 42m
Qantas Airways
Thu 4/3012:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,069
This oojo deal was found by Cheapflights users on 3/5. 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 3/94:13 pm
STL
- SYD
1 stop22h 42m
Qantas Airways
Wed 3/119:55 pm
SYD
- STL
2 stops42h 03m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,090
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 3/711:46 am
STL
- SYD
1 stop26h 09m
Qantas Airways
Sat 3/143:35 pm
SYD
- STL
2 stops24h 23m
Qantas Airways
Deal found 3/3![Qantas Airways logo]()
$1,091
This oojo deal was found by Cheapflights users on 3/5. 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.
Sun 4/196:21 am
STL
- SYD
2 stops36h 59m
Qantas Airways
Sat 4/2512:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,096
This oojo deal was found by Cheapflights users on 3/5. 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.
Sun 4/196:21 am
STL
- BNE
1 stop31h 39m
Qantas Airways
Sun 4/268:45 am
BNE
- STL
2 stops23h 36m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,099
This United Airlines deal was found by Cheapflights users on 3/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:30 am
STL
- BNE
1 stop31h 00m
United Airlines
Sun 4/2610:30 am
BNE
- STL
1 stop22h 54m
United Airlines
Deal found 3/5![United Airlines logo]()
$1,114
This American Airlines deal was found by Cheapflights users on 3/4. 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.
Fri 5/221:45 pm
STL
- MEL
2 stops26h 00m
American Airlines
Wed 6/31:35 pm
MEL
- STL
1 stop25h 24m
American Airlines
Deal found 3/4![American Airlines logo]()
$1,117
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 March 7, 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 March 7, 2026.
This United Airlines deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/34:49 pm
STL
- MEL
2 stops23h 41m
United Airlines
Sun 4/1910:55 am
MEL
- STL
2 stops24h 59m
United Airlines
Deal found 3/2![United Airlines logo]()
$1,128
This Qantas Airways deal was found by Cheapflights users on 3/5. 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.
Thu 4/306:21 am
STL
- SYD
2 stops35h 59m
Qantas Airways
Mon 5/412:00 pm
SYD
- STL
1 stop22h 30m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,150
This Priceline deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/227:05 am
STL
- BNE
3 stops57h 55m
Air Canada
Thu 6/48:45 pm
BNE
- STL
3 stops54h 21m
Air Canada
Deal found 3/3![Air Canada logo]()
$1,167
This Delta deal was found by Cheapflights users on 3/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:50 pm
STL
- MEL
2 stops46h 00m
Delta
Sun 4/2610:00 am
MEL
- STL
2 stops29h 25m
Delta
Deal found 3/5![Delta logo]()
$1,185
This lastminute.com deal was found by Cheapflights users on 3/4. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:21 am
STL
- CNS
2 stops37h 54m
Multiple Airlines
Sun 4/269:40 pm
CNS
- STL
2 stops41h 17m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$1,296
This Booking.com deal was found by Cheapflights users on 3/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1910:09 am
STL
- CNS
2 stops33h 36m
Air New Zealand
Sun 4/266:55 pm
CNS
- STL
3 stops42h 33m
Air New Zealand
Deal found 3/4![Air New Zealand logo]()
$1,512
This FlightHub deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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.
Tue 3/316:08 pm
STL
- CBR
3 stops46h 12m
Qatar Airways
Tue 4/712:10 pm
CBR
- STL
3 stops44h 11m
Qatar Airways
Deal found 3/3![Qatar Airways logo]()
$2,066
This United Airlines deal was found by Cheapflights users on 3/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:45 am
STL
- BNE
2 stops55h 45m
United Airlines
Wed 4/2910:30 am
BNE
- STL
1 stop22h 54m
United Airlines
Deal found 3/5![United Airlines logo]()
$1,135
This Delta deal was found by Cheapflights users on 3/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/41:46 pm
STL
- SYD
2 stops26h 04m
Delta
Mon 5/189:15 am
SYD
- STL
2 stops26h 54m
Delta
Deal found 3/7![Delta logo]()
$1,199
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/211:10 pm
STL
- MEL
2 stops28h 05m
United Airlines
Tue 4/2810:55 am
MEL
- STL
1 stop22h 29m
United Airlines
Deal found 3/6![United Airlines logo]()
$1,177
This Qantas Airways deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:38 pm
STL
- HBA
2 stops30h 32m
Qantas Airways
Wed 4/2910:10 am
HBA
- STL
2 stops24h 20m
Qantas Airways
Deal found 3/2![Qantas Airways logo]()
$1,388
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Mon 5/47:06 pm
STL
- SYD
1 stop20h 49m
United Airlines
Mon 5/1810:20 am
SYD
- STL
1 stop23h 02m
United Airlines
Deal found 3/6![United Airlines logo]()
$1,194
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/46:21 am
STL
- CNS
2 stops46h 09m
Qantas Airways
Sun 8/95:00 pm
CNS
- STL
2 stops45h 08m
Qantas Airways
Deal found 3/3![Qantas Airways logo]()
$1,394
This Sembo deal was found by Cheapflights users on 3/4. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:20 pm
STL
- PER
2 stops61h 15m
Multiple Airlines
Sat 4/253:40 pm
PER
- STL
2 stops45h 19m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$1,590
This United Airlines deal was found by Cheapflights users on 3/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:49 pm
STL
- SYD
2 stops23h 11m
United Airlines
Sun 4/269:30 am
SYD
- STL
2 stops25h 01m
United Airlines
Deal found 3/5![United Airlines logo]()
$1,199
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 3/316:38 am
STL
- CBR
2 stops42h 12m
Qantas Airways
Tue 4/79:35 am
CBR
- STL
2 stops53h 22m
Qantas Airways
Deal found 3/3![Qantas Airways logo]()
$1,431
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/28:30 am
STL
- SYD
1 stop31h 25m
United Airlines
Sat 5/1610:20 am
SYD
- STL
1 stop23h 02m
United Airlines
Deal found 3/3![United Airlines logo]()
$1,226
This Etihad Airways deal was found by Cheapflights users on 3/7. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/299:15 am
STL
- MEL
2 stops39h 35m
Multiple Airlines
Wed 4/85:20 pm
MEL
- STL
2 stops38h 21m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$1,699
This Qantas Airways deal was found by Cheapflights users on 3/5. 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 4/276:21 am
STL
- CNS
2 stops43h 34m
Qantas Airways
Tue 7/281:40 pm
CNS
- STL
2 stops43h 50m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,461
This Air Canada deal was found by Cheapflights users on 3/6. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:05 pm
STL
- PER
3 stops64h 25m
Air Canada
Mon 4/2711:55 pm
PER
- STL
3 stops52h 30m
Air Canada
Deal found 3/6![Air Canada logo]()
$1,953
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 6/276:55 pm
STL
- BNE
2 stops44h 35m
United Airlines
Sun 7/510:30 am
BNE
- STL
1 stop22h 47m
United Airlines
Deal found 3/3![United Airlines logo]()
$1,233
This Air New Zealand deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/32:40 pm
STL
- MEL
3 stops29h 15m
Multiple Airlines
Sun 4/1912:10 pm
MEL
- STL
2 stops25h 18m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$1,714
This Qantas Airways deal was found by Cheapflights users on 3/4. 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.
Thu 4/306:21 am
STL
- CNS
2 stops46h 09m
Qantas Airways
Tue 7/286:20 pm
CNS
- STL
2 stops39h 10m
Qantas Airways
Deal found 3/4![Qantas Airways logo]()
$1,462
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Thu 5/77:06 pm
STL
- SYD
1 stop20h 49m
United Airlines
Tue 5/1210:20 am
SYD
- STL
1 stop23h 02m
United Airlines
Deal found 3/6![United Airlines logo]()
$1,235
This Qantas Airways deal was found by Cheapflights users on 3/5. 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.
Thu 4/306:21 am
STL
- CNS
2 stops37h 14m
Qantas Airways
Sat 7/256:20 pm
CNS
- STL
2 stops44h 39m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,471
This United Airlines deal was found by Cheapflights users on 3/4. 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.
Fri 5/227:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Mon 5/2510:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 3/4![United Airlines logo]()
$1,236
This Qantas Airways deal was found by Cheapflights users on 3/6. 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.
Sun 4/266:21 am
STL
- CNS
2 stops37h 14m
Qantas Airways
Fri 7/315:00 pm
CNS
- STL
2 stops45h 59m
Qantas Airways
Deal found 3/6![Qantas Airways logo]()
$1,486
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 6/255:10 am
STL
- BNE
2 stops58h 20m
United Airlines
Sun 7/510:30 am
BNE
- STL
1 stop22h 47m
United Airlines
Deal found 3/3![United Airlines logo]()
$1,283
This Expedia deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:38 am
STL
- CBR
2 stops37h 32m
Multiple Airlines
Tue 4/712:10 pm
CBR
- STL
3 stops49h 14m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$2,068
This Qantas Airways deal was found by Cheapflights users on 3/6. 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.
Sun 4/266:21 am
STL
- CNS
2 stops41h 39m
Qantas Airways
Mon 7/2712:35 pm
CNS
- STL
2 stops50h 24m
Qantas Airways
Deal found 3/6![Qantas Airways logo]()
$1,486
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated March 7, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated March 7, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 3/711:46 am
STL
- SYD
1 stop26h 09m
Qantas Airways
Sat 3/143:35 pm
SYD
- STL
2 stops24h 23m
Qantas Airways
Deal found 3/3![Qantas Airways logo]()
$1,091
This oojo deal was found by Cheapflights users on 3/5. 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 3/94:13 pm
STL
- SYD
1 stop22h 42m
Qantas Airways
Wed 3/119:55 pm
SYD
- STL
2 stops42h 03m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,090
This American Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/122:31 pm
STL
- MEL
2 stops26h 59m
American Airlines
Sat 3/2112:00 pm
MEL
- STL
1 stop27h 58m
American Airlines
Deal found 3/3![American Airlines logo]()
$1,117
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 4/37:05 pm
STL
- MEL
1 stop22h 10m
United Airlines
Sun 4/199:30 am
MEL
- STL
2 stops22h 26m
United Airlines
Deal found 3/3![United Airlines logo]()
$1,128
This lastminute.com deal was found by Cheapflights users on 3/5. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:38 am
STL
- SYD
2 stops35h 42m
Qantas Airways
Thu 4/3012:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,069
This American Airlines deal was found by Cheapflights users on 3/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/192:37 pm
STL
- BNE
2 stops23h 23m
American Airlines
Sun 4/268:35 pm
BNE
- STL
2 stops26h 49m
American Airlines
Deal found 3/5![American Airlines logo]()
$1,041
This oojo deal was found by Cheapflights users on 3/5. 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.
Sun 4/196:21 am
STL
- SYD
2 stops36h 59m
Qantas Airways
Sat 4/2512:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,096
This oojo deal was found by Cheapflights users on 3/5. 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.
Sun 4/196:21 am
STL
- BNE
1 stop31h 39m
Qantas Airways
Sun 4/268:45 am
BNE
- STL
2 stops23h 36m
Qantas Airways
Deal found 3/5![Qantas Airways logo]()
$1,099
This United Airlines deal was found by Cheapflights users on 3/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:30 am
STL
- BNE
1 stop31h 00m
United Airlines
Sun 4/2610:30 am
BNE
- STL
1 stop22h 54m
United Airlines
Deal found 3/5![United Airlines logo]()
$1,114
This lastminute.com deal was found by Cheapflights users on 3/6. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:21 am
STL
- SYD
2 stops35h 59m
Qantas Airways
Mon 4/2712:00 pm
SYD
- STL
1 stop20h 21m
Qantas Airways
Deal found 3/6![Qantas Airways logo]()
$1,128
This Air Canada deal was found by Cheapflights users on 3/6. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/214:05 pm
STL
- BNE
2 stops48h 00m
Air Canada
Tue 4/2810:00 am
BNE
- STL
2 stops44h 25m
Air Canada
Deal found 3/6![Air Canada logo]()
$993
This Air Canada deal was found by Cheapflights users on 3/5. 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 4/254:05 pm
STL
- BNE
2 stops48h 00m
Air Canada
Wed 4/2910:00 am
BNE
- STL
2 stops45h 57m
Air Canada
Deal found 3/5![Air Canada logo]()
$1,117
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 March 7, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated March 7, 2026.
This Air Canada deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/222:20 pm
STL
- BNE
2 stops25h 45m
Air Canada
Deal found 3/3![Air Canada logo]()
$511
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/274:44 pm
STL
- SYD
3 stops52h 06m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$527
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/41:06 pm
STL
- MEL
3 stops31h 54m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$530
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 4/188:17 pm
STL
- MEL
3 stops49h 08m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$536
This Air Canada deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 4/184:05 pm
STL
- AVV
3 stops55h 05m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$537
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/228:08 pm
STL
- BNE
3 stops47h 32m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$538
This Travelocity deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:05 am
STL
- MEL
3 stops37h 30m
Air Canada
Deal found 3/3![Air Canada logo]()
$551
This Ovago deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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.
Sat 4/184:05 pm
STL
- MEL
2 stops52h 00m
Singapore Airlines
Deal found 3/3![Singapore Airlines logo]()
$576
This Orbitz deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/271:00 pm
STL
- SYD
2 stops27h 20m
Air Canada
Deal found 3/3![Air Canada logo]()
$608
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1112:14 pm
STL
- SYD
3 stops32h 21m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$612
This American Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/231:19 pm
STL
- MEL
2 stops26h 26m
American Airlines
Deal found 3/3![American Airlines logo]()
$622
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 5/227:23 pm
STL
- BNE
1 stop20h 07m
United Airlines
Deal found 3/3![United Airlines logo]()
$623
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 March 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $900 (Air Canada) |
One-way from | $511 (Air Canada) |
Popular in | December |
Cheapest in | August |
Average price | $1,299 |
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 2,558,603 searches. Data last updated March 7, 2026.
Use the filters below to find and compare flights from St. Louis to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Fri 4/3
4:49 pm-8:30 am
2 stops23h 41m
Melbourne
Sun 4/19
10:55 am-8:54 pm
2 stops24h 59m
$1,128
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Sat 4/25
7:45 am-6:30 am
2 stops55h 45m
Brisbane
Wed 4/29
10:30 am-6:24 pm
1 stop22h 54m
$1,135
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Thu 4/30
6:21 am-9:20 am
2 stops35h 59m
Sydney Kingsford Smith
Mon 5/4
12:00 pm-7:30 pm
1 stop22h 30m
$1,150
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Fri 5/22
7:05 am-8:00 am
3 stops57h 55m
Brisbane
Thu 6/4
8:45 pm-12:06 pm
3 stops54h 21m
$1,167
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Tue 4/21
1:10 pm-8:15 am
2 stops28h 05m
Melbourne
Tue 4/28
10:55 am-6:24 pm
1 stop22h 29m
$1,177
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Sun 4/19
6:50 pm-7:50 am
2 stops46h 00m
Melbourne
Sun 4/26
10:00 am-12:25 am
2 stops29h 25m
$1,185
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 5/4
7:06 pm-6:55 am
1 stop20h 49m
Sydney Kingsford Smith
Mon 5/18
10:20 am-6:22 pm
1 stop23h 02m
$1,194
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 5/4
1:46 pm-6:50 am
2 stops26h 04m
Sydney Kingsford Smith
Mon 5/18
9:15 am-9:09 pm
2 stops26h 54m
$1,199
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Sun 4/19
4:49 pm-7:00 am
2 stops23h 11m
Sydney Kingsford Smith
Sun 4/26
9:30 am-7:31 pm
2 stops25h 01m
$1,199
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Sat 5/2
8:30 am-6:55 am
1 stop31h 25m
Sydney Kingsford Smith
Sat 5/16
10:20 am-6:22 pm
1 stop23h 02m
$1,226
Showing 1-10 of 48 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-MEL
STL-AVV
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-MEL
STL-AVV
What is the cheapest month to book a flight from St. Louis to Australia?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Australia (average of $653). Flying from St. Louis to Australia in June is currently the most expensive (average of $1,225). 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 March 7, 2026.
Read reviews from past customers who have flown Fiji Airways, Qantas Airways, and United Airlines from St. Louis to Australia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.5
Crew
8.5
Boarding
8.1
Food
7.5
Comfort
8.0
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Overall
8.0
Entertainment
7.5
Crew
8.5
Boarding
8.1
Food
7.5
Comfort
8.0
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Overall
8.0
Entertainment
7.5
Crew
8.5
Boarding
8.1
Food
7.5
Comfort
8.0
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Overall
8.0
Entertainment
7.5
Crew
8.5
Boarding
8.1
Food
7.5
Comfort
8.0
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Overall
8.0
Entertainment
7.5
Crew
8.5
Boarding
8.1
Food
7.5
Comfort
8.0
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Overall
8.0
Entertainment
7.5
Crew
8.5
Boarding
8.1
Food
7.5
Comfort
8.0
Reviews
1 / 18
10.0
ExcellentAnonymous,Feb 2026
SFO - NAN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Australia
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Australia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Australia by cabin class
Find flights from St. Louis to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Australia flights
Browse other St. Louis and Australia flight options. Last updated on March 7, 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 5 airlines flying from St. Louis to Australia
Discover the top 5 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 2,558,603 searches. Data last updated March 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$608 | Average$1,077 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$975 | Average$1,325 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,029 | Average$1,427 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,056 | Average$1,370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,132 | Average$1,268 | FlexibilityNo cancel fee | On-time74% |