$755+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Jul 3 — Jul 101
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 June 3, 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 June 3, 2026.
This American Airlines deal was found by Cheapflights users on 6/3. 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.
Tue 10/2012:43 pm
STL
- MEL
2 stops26h 02m
American Airlines
Tue 11/312:00 pm
MEL
- STL
2 stops24h 29m
American Airlines
Deal found 6/3![American Airlines logo]()
$1,086
This American Airlines deal was found by Cheapflights users on 6/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:30 am
STL
- MEL
1 stop32h 15m
American Airlines
Wed 11/411:15 pm
MEL
- STL
2 stops26h 12m
American Airlines
Deal found 6/2![American Airlines logo]()
$1,094
This oojo deal was found by Cheapflights users on 6/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:30 am
STL
- MEL
1 stop35h 00m
Qantas Airways
Wed 11/1111:15 pm
MEL
- STL
1 stop41h 27m
Qantas Airways
Deal found 6/2![Qantas Airways logo]()
$1,097
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/155:10 am
STL
- MEL
2 stops36h 05m
United Airlines
Wed 7/229:30 am
MEL
- STL
2 stops29h 27m
United Airlines
Deal found 5/30![United Airlines logo]()
$1,111
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/17:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Tue 7/710:10 am
MEL
- STL
2 stops47h 07m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,116
This Air Canada deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 6/11:05 pm
STL
- SYD
2 stops27h 15m
Air Canada
Thu 7/169:20 am
SYD
- STL
2 stops26h 02m
Air Canada
Deal found 5/29![Air Canada logo]()
$1,233
This American Airlines deal was found by Cheapflights users on 6/3. 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.
Tue 10/2712:43 pm
STL
- MEL
1 stop24h 17m
American Airlines
Wed 11/1111:15 pm
MEL
- STL
2 stops26h 43m
American Airlines
Deal found 6/3![American Airlines logo]()
$1,236
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/127:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Sun 7/1910:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,285
This Qantas Airways deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 9/235:00 pm
STL
- SYD
2 stops24h 15m
Qantas Airways
Wed 10/710:30 am
SYD
- STL
2 stops23h 44m
Qantas Airways
Deal found 5/31![Qantas Airways logo]()
$1,293
This FlightHub deal was found by Cheapflights users on 6/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:10 am
STL
- SYD
2 stops35h 10m
Air Canada
Wed 10/710:20 am
SYD
- STL
3 stops41h 53m
Air Canada
Deal found 6/2![Air Canada logo]()
$1,295
This CheapOair deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/205:10 am
STL
- SYD
2 stops35h 10m
Air Canada
Tue 7/289:20 am
SYD
- STL
3 stops45h 26m
Air Canada
Deal found 5/31![Air Canada logo]()
$1,296
This Air Canada deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/274:15 pm
STL
- BNE
2 stops48h 30m
Air Canada
Wed 11/1110:45 am
BNE
- STL
2 stops44h 45m
Air Canada
Deal found 5/31![Air Canada logo]()
$1,297
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 June 3, 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 June 3, 2026.
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/16:01 am
STL
- MEL
2 stops35h 14m
United Airlines
Tue 7/710:10 am
MEL
- STL
2 stops47h 07m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,116
This Air Canada deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/274:15 pm
STL
- BNE
2 stops48h 30m
Air Canada
Wed 11/1110:45 am
BNE
- STL
2 stops44h 45m
Air Canada
Deal found 5/31![Air Canada logo]()
$1,297
This oojo deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 8/35:13 pm
STL
- BNE
2 stops26h 07m
Qantas Airways
Mon 8/317:00 am
BNE
- STL
2 stops26h 14m
Qantas Airways
Deal found 5/29![Qantas Airways logo]()
$1,322
This Air Canada deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 10/274:15 pm
STL
- AVV
3 stops63h 00m
Multiple Airlines
Wed 11/116:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,327
This American Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 8/36:37 am
STL
- BNE
1 stop31h 23m
American Airlines
Mon 8/318:35 pm
BNE
- STL
2 stops27h 49m
American Airlines
Deal found 5/29![American Airlines logo]()
$1,408
This Delta deal was found by Cheapflights users on 6/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/161:39 pm
STL
- SYD
2 stops26h 11m
Delta
Fri 6/199:15 am
SYD
- STL
2 stops23h 52m
Delta
Deal found 6/2![Delta logo]()
$1,663
This Qatar Airways deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
Fri 9/181:49 pm
STL
- PER
2 stops39h 46m
Qatar Airways
Mon 9/2110:45 pm
PER
- STL
2 stops38h 42m
Qatar Airways
Deal found 5/31![Qatar Airways logo]()
$2,382
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/127:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Sun 7/1910:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,285
This Air Canada deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 10/1312:10 pm
STL
- SYD
2 stops28h 10m
Air Canada
Wed 11/1811:20 am
SYD
- STL
2 stops45h 10m
Air Canada
Deal found 5/29![Air Canada logo]()
$1,297
This Air Canada deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 10/202:40 pm
STL
- AVV
3 stops33h 25m
Multiple Airlines
Tue 11/36:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,327
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/135:10 am
STL
- MEL
2 stops35h 20m
United Airlines
Mon 7/2010:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,327
This Air Canada deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 10/202:40 pm
STL
- MEL
3 stops29h 30m
Multiple Airlines
Tue 11/37:25 am
MEL
- STL
3 stops49h 05m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,342
This Trip.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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.
Thu 7/27:24 pm
STL
- SYD
1 stop20h 31m
Qantas Airways
Fri 7/105:50 pm
SYD
- STL
1 stop21h 09m
Qantas Airways
Deal found 5/30![Qantas Airways logo]()
$1,506
This FlightHub deal was found by Cheapflights users on 6/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am
STL
- SYD
3 stops34h 20m
Air Canada
Sat 9/199:20 am
SYD
- STL
2 stops43h 40m
Air Canada
Deal found 6/2![Air Canada logo]()
$1,430
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/278:15 pm
STL
- BNE
2 stops43h 15m
United Airlines
Wed 11/1111:40 am
BNE
- STL
1 stop26h 20m
United Airlines
Deal found 5/31![United Airlines logo]()
$1,337
This Delta deal was found by Cheapflights users on 6/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/23:57 pm
STL
- SYD
2 stops23h 53m
Delta
Wed 7/89:15 am
SYD
- STL
2 stops30h 26m
Delta
Deal found 6/3![Delta logo]()
$1,663
This American Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/66:34 pm
STL
- PER
3 stops29h 01m
American Airlines
Mon 10/1210:30 am
PER
- STL
2 stops25h 35m
American Airlines
Deal found 5/31![American Airlines logo]()
$1,701
This Air Canada deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 10/218:55 am
STL
- AVV
3 stops37h 15m
Multiple Airlines
Wed 11/46:00 am
AVV
- STL
3 stops50h 30m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,437
This oojo deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/66:51 pm
STL
- PER
2 stops62h 19m
Qantas Airways
Mon 10/1210:30 am
PER
- STL
2 stops25h 35m
Qantas Airways
Deal found 5/31![Qantas Airways logo]()
$1,581
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Tue 6/301:13 pm
STL
- SYD
2 stops26h 47m
United Airlines
Tue 7/79:30 am
SYD
- STL
2 stops23h 43m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,337
This FlightHub deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/62:40 pm
STL
- PER
3 stops41h 00m
Air Canada
Mon 10/1210:55 pm
PER
- STL
3 stops34h 05m
Air Canada
Deal found 5/31![Air Canada logo]()
$1,545
This Air Canada deal was found by Cheapflights users on 6/2. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:55 am
STL
- AVV
3 stops37h 15m
Multiple Airlines
Fri 10/96:00 am
AVV
- STL
3 stops48h 00m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$1,440
This Qantas Airways deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 11/186:13 pm
STL
- CNS
2 stops27h 57m
Qantas Airways
Sun 11/222:55 pm
CNS
- STL
2 stops41h 45m
Qantas Airways
Deal found 5/29![Qantas Airways logo]()
$1,707
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 6/277:05 pm
STL
- BNE
2 stops44h 25m
United Airlines
Sun 7/510:30 am
BNE
- STL
1 stop22h 47m
United Airlines
Deal found 5/30![United Airlines logo]()
$1,427
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/22:57 pm
STL
- SYD
2 stops24h 58m
United Airlines
Fri 7/1010:20 am
SYD
- STL
2 stops40h 51m
United Airlines
Deal found 5/30![United Airlines logo]()
$1,454
This Qantas Airways deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 8/85:11 pm
STL
- CBR
2 stops25h 59m
Qantas Airways
Wed 8/126:00 pm
CBR
- STL
2 stops43h 59m
Qantas Airways
Deal found 5/30![Qantas Airways logo]()
$1,801
This Air New Zealand deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:36 pm
STL
- MEL
3 stops29h 19m
Multiple Airlines
Wed 11/412:10 pm
MEL
- STL
2 stops23h 28m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,737
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 6/137:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Fri 6/1910:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 5/31![United Airlines logo]()
$1,509
This Qantas Airways deal was found by Cheapflights users on 6/2. 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.
Wed 8/56:00 am
STL
- SYD
1 stop34h 05m
Qantas Airways
Sun 8/99:10 am
SYD
- STL
1 stop28h 49m
Qantas Airways
Deal found 6/2![Qantas Airways logo]()
$1,829
This Air New Zealand deal was found by Cheapflights users on 6/2. 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.
Sat 7/258:00 am
STL
- SYD
3 stops33h 45m
Multiple Airlines
Sat 8/811:55 am
SYD
- STL
2 stops25h 50m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$1,825
Last-minute flights from St. Louis to AustraliaDiscover last-minute flight deals from St. Louis to Australia. Data last updated June 3, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Australia. Data last updated June 3, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 6/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:29 pm
STL
- SYD
2 stops46h 31m
Air New Zealand
Sat 6/209:30 am
SYD
- STL
2 stops26h 27m
Air New Zealand
Deal found 6/2![Air New Zealand logo]()
$1,403
This FlightHub deal was found by Cheapflights users on 6/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/252:15 pm
STL
- BNE
2 stops49h 50m
Air Canada
Sun 7/510:00 am
BNE
- STL
2 stops43h 02m
Air Canada
Deal found 6/2![Air Canada logo]()
$1,419
This FlightHub deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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.
Sat 6/271:20 pm
STL
- BNE
2 stops50h 45m
Air Canada
Sun 7/510:00 am
BNE
- STL
2 stops43h 02m
Air Canada
Deal found 6/1![Air Canada logo]()
$1,377
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Tue 6/301:13 pm
STL
- SYD
2 stops26h 47m
United Airlines
Tue 7/79:30 am
SYD
- STL
2 stops23h 43m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,337
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/17:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Tue 7/710:10 am
MEL
- STL
2 stops47h 07m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,116
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/127:23 pm
STL
- MEL
1 stop21h 52m
United Airlines
Sun 7/1910:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,285
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/135:10 am
STL
- MEL
2 stops35h 20m
United Airlines
Mon 7/2010:55 am
MEL
- STL
1 stop22h 22m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,327
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/155:10 am
STL
- MEL
2 stops36h 05m
United Airlines
Wed 7/229:30 am
MEL
- STL
2 stops29h 27m
United Airlines
Deal found 5/30![United Airlines logo]()
$1,111
This CheapOair deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/205:10 am
STL
- SYD
2 stops35h 10m
Air Canada
Tue 7/289:20 am
SYD
- STL
3 stops45h 26m
Air Canada
Deal found 5/31![Air Canada logo]()
$1,296
This Expedia deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
Sat 7/256:37 am
STL
- SYD
1 stop33h 28m
Qantas Airways
Sat 8/812:00 pm
SYD
- STL
1 stop19h 14m
Qantas Airways
Deal found 5/31![Qantas Airways logo]()
$1,343
This KAYAK deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
Sat 7/257:05 pm
STL
- SYD
2 stops44h 55m
Air New Zealand
Sat 8/89:30 am
SYD
- STL
2 stops22h 03m
Air New Zealand
Deal found 5/31![Air New Zealand logo]()
$1,402
This CheapOair deal was found by Cheapflights users on 6/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/265:10 am
STL
- SYD
2 stops35h 10m
Air Canada
Fri 7/319:20 am
SYD
- STL
2 stops29h 37m
Air Canada
Deal found 6/2![Air Canada logo]()
$1,422
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 June 3, 2026.
Search for one-way flight options from St. Louis to Australia. Find affordable one-way fares based on user searches. Data last updated June 3, 2026.
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/147:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 6/1![United Airlines logo]()
$755
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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.
Sat 6/203:57 pm
STL
- SYD
2 stops47h 53m
Delta
Deal found 6/1![Delta logo]()
$779
This Kiwi.com deal was found by Cheapflights users on 6/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:03 pm
STL
- SYD
2 stops45h 27m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$795
This oojo deal was found by Cheapflights users on 6/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:13 pm
STL
- SYD
1 stop22h 42m
Qantas Airways
Deal found 6/2![Qantas Airways logo]()
$800
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/189:21 am
STL
- SYD
2 stops30h 29m
Delta
Deal found 6/1![Delta logo]()
$820
This FlightHub deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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.
Thu 6/186:35 am
STL
- SYD
1 stop33h 30m
Qantas Airways
Deal found 6/1![Qantas Airways logo]()
$852
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/168:08 pm
STL
- SYD
3 stops31h 42m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$855
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/207:38 pm
STL
- SYD
3 stops56h 12m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$859
This Qantas Airways deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/196:35 am
STL
- SYD
1 stop33h 30m
Qantas Airways
Deal found 6/1![Qantas Airways logo]()
$864
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/197:38 pm
STL
- SYD
3 stops32h 12m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$890
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/148:36 am
STL
- SYD
3 stops32h 44m
American Airlines
Deal found 6/1![American Airlines logo]()
$928
This Air Canada deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/171:05 pm
STL
- SYD
3 stops51h 15m
Air Canada
Deal found 6/1![Air Canada logo]()
$935
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 June 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,086 (American Airlines) |
One-way from | $755 (United Airlines) |
Popular in | December |
Cheapest in | March |
Average price | $1,560 |
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 June 3, 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
Wed 7/1
6:01 am-8:15 am
2 stops35h 14m
Melbourne
Tue 7/7
10:10 am-6:17 pm
2 stops47h 07m
$1,116
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Sun 7/12
7:23 pm-8:15 am
1 stop21h 52m
Melbourne
Sun 7/19
10:55 am-6:17 pm
1 stop22h 22m
$1,285
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Tue 10/27
4:15 pm-7:45 am
2 stops48h 30m
Brisbane
Wed 11/11
10:45 am-3:30 pm
2 stops44h 45m
$1,297
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Tue 10/13
12:10 pm-8:20 am
2 stops28h 10m
Sydney Kingsford Smith
Wed 11/18
11:20 am-3:30 pm
2 stops45h 10m
$1,297
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Mon 8/3
5:13 pm-10:20 am
2 stops26h 07m
Brisbane
Mon 8/31
7:00 am-6:14 pm
2 stops26h 14m
$1,322
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
Tue 10/27
4:15 pm-11:15 pm
3 stops63h 00m
Melbourne Avalon
Wed 11/11
6:00 am-3:30 pm
3 stops50h 30m
$1,327
St. LouisMelbourne
STL - AVV
STLAVV
Lambert-St Louis
Tue 10/20
2:40 pm-4:05 pm
3 stops33h 25m
Melbourne Avalon
Tue 11/3
6:00 am-3:30 pm
3 stops50h 30m
$1,327
St. LouisMelbourne
STL - MEL
STLMEL
Lambert-St Louis
Mon 7/13
5:10 am-7:30 am
2 stops35h 20m
Melbourne
Mon 7/20
10:55 am-6:17 pm
1 stop22h 22m
$1,327
St. LouisBrisbane
STL - BNE
STLBNE
Lambert-St Louis
Tue 10/27
8:15 pm-6:30 am
2 stops43h 15m
Brisbane
Wed 11/11
11:40 am-10:00 pm
1 stop26h 20m
$1,337
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Tue 6/30
1:13 pm-7:00 am
2 stops26h 47m
Sydney Kingsford Smith
Tue 7/7
9:30 am-6:13 pm
2 stops23h 43m
$1,337
Showing 1-10 of 36 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-BNE
STL-AVV
STL-SYD
STL-PER
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Australia
STL-AU0
STL-MEL
STL-BNE
STL-AVV
STL-SYD
What is the cheapest month to book a flight from St. Louis to Australia?
Currently, May is the cheapest month in which you can book a flight from St. Louis to Australia (average of $310). 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 June 3, 2026.
Read reviews from past customers who have flown Fiji Airways,Qantas Airways, andUnited 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.
Boarding
8.2
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Boarding
8.2
Food
7.5
Comfort
8.1
Entertainment
7.5
Overall
8.1
Crew
8.6
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - 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 June 3, 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 June 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$857 | Average$1,312 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$887 | Average$1,264 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$907 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,029 | Average$1,416 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,056 | Average$1,363 | FlexibilityNo cancel fee | On-time71% |