$625+ Cheap flights from St. Louis (STL) to Sydney (SYD)
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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Sydney with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Best
Last-minute
One-way
Cheapest flights from St. Louis to SydneyExplore the most affordable flight options available from St. Louis to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2026.
Explore the most affordable flight options available from St. Louis to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2026.
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:13 pm
STL
- SYD
2 stops33h 37m
Qantas Airways
Wed 11/2511:15 am
SYD
- STL
1 stop29h 27m
Qantas Airways
Deal found 6/12![Qantas Airways logo]()
$1,041
This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:00 am
STL
- SYD
1 stop33h 00m
Qantas Airways
Sat 11/215:50 pm
SYD
- STL
2 stops35h 47m
Qantas Airways
Deal found 6/11![Qantas Airways logo]()
$1,042
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:13 pm
STL
- SYD
2 stops33h 37m
Qantas Airways
Tue 12/1511:15 am
SYD
- STL
1 stop29h 42m
Qantas Airways
Deal found 6/9![Qantas Airways logo]()
$1,176
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:30 am
STL
- SYD
2 stops41h 00m
Qantas Airways
Wed 11/186:45 pm
SYD
- STL
2 stops45h 57m
Qantas Airways
Deal found 6/9![Qantas Airways logo]()
$1,328
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:30 am
STL
- SYD
2 stops36h 15m
Qantas Airways
Fri 11/137:40 pm
SYD
- STL
2 stops45h 02m
Qantas Airways
Deal found 6/10![Qantas Airways logo]()
$1,329
This KAYAK deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:42 am
STL
- SYD
1 stop31h 13m
Air New Zealand
Tue 8/2510:20 am
SYD
- STL
2 stops21h 46m
Air New Zealand
Deal found 6/13![Air New Zealand logo]()
$1,333
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Mon 6/88:14 pm
STL
- SYD
2 stops43h 51m
American Airlines
Sun 6/219:10 am
SYD
- STL
1 stop29h 46m
American Airlines
Deal found 6/8![American Airlines logo]()
$1,339
This Delta deal was found by Cheapflights users on 6/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:55 pm
STL
- SYD
2 stops43h 55m
Delta
Sun 6/219:15 am
SYD
- STL
2 stops29h 08m
Delta
Deal found 6/8![Delta logo]()
$1,343
Best flights from St. Louis to SydneyDiscover carefully curated flight deals from St. Louis to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2026.
Discover carefully curated flight deals from St. Louis to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2026.
This FlightHub deal was found by Cheapflights users on 6/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:39 pm
STL
- SYD
2 stops23h 41m
Air Canada
Wed 11/1811:20 am
SYD
- STL
3 stops42h 00m
Air Canada
Deal found 6/8![Air Canada logo]()
$1,407
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:30 am
STL
- SYD
2 stops35h 15m
Qantas Airways
Wed 11/1811:15 am
SYD
- STL
1 stop29h 27m
Qantas Airways
Deal found 6/8![Qantas Airways logo]()
$1,409
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/245:10 am
STL
- SYD
2 stops34h 50m
United Airlines
Fri 7/319:30 am
SYD
- STL
2 stops22h 03m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,451
This KAYAK deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:42 am
STL
- SYD
1 stop31h 13m
Air New Zealand
Mon 9/1410:20 am
SYD
- STL
1 stop23h 19m
Air New Zealand
Deal found 6/12![Air New Zealand logo]()
$1,457
This Air New Zealand deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:59 pm
STL
- SYD
3 stops28h 46m
Multiple Airlines
Wed 9/1611:55 am
SYD
- STL
3 stops26h 45m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$2,096
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:30 am
STL
- SYD
1 stop33h 35m
Qantas Airways
Fri 11/137:00 am
SYD
- STL
2 stops57h 42m
Qantas Airways
Deal found 6/8![Qantas Airways logo]()
$1,419
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/234:40 pm
STL
- SYD
2 stops23h 20m
United Airlines
Wed 10/711:20 am
SYD
- STL
1 stop23h 23m
United Airlines
Deal found 6/12![United Airlines logo]()
$1,458
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:30 pm
STL
- SYD
2 stops45h 30m
United Airlines
Tue 11/2411:50 am
SYD
- STL
1 stop21h 45m
United Airlines
Deal found 6/11![United Airlines logo]()
$1,478
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:06 pm
STL
- SYD
1 stop21h 09m
United Airlines
Sat 11/2112:10 pm
SYD
- STL
1 stop22h 43m
United Airlines
Deal found 6/11![United Airlines logo]()
$2,259
This Air New Zealand deal was found by Cheapflights users on 6/8. 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 Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:30 pm
STL
- SYD
3 stops28h 00m
Multiple Airlines
Sun 12/69:55 am
SYD
- STL
2 stops29h 11m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$4,348
Last-minute flights from St. Louis to SydneyDiscover last-minute flight deals from St. Louis to Sydney. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Sydney. Data last updated June 13, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/126:35 am
STL
- SYD
2 stops37h 55m
Qantas Airways
Fri 6/199:10 am
SYD
- STL
1 stop29h 46m
Qantas Airways
Deal found 6/11![Qantas Airways logo]()
$1,394
This KAYAK deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/127:23 pm
STL
- SYD
1 stop20h 32m
Air New Zealand
Fri 6/1910:20 am
SYD
- STL
1 stop22h 57m
Air New Zealand
Deal found 6/10![Air New Zealand logo]()
$1,429
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/123:22 pm
STL
- SYD
2 stops24h 38m
United Airlines
Fri 6/1910:20 am
SYD
- STL
2 stops23h 53m
United Airlines
Deal found 6/11![United Airlines logo]()
$1,434
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:00 am
STL
- SYD
2 stops33h 50m
Delta
Mon 6/229:15 am
SYD
- STL
2 stops30h 28m
Delta
Deal found 6/10![Delta logo]()
$1,355
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/154:52 pm
STL
- SYD
2 stops23h 08m
United Airlines
Mon 6/2210:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,451
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/177:08 am
STL
- SYD
2 stops32h 42m
Delta
Wed 6/249:15 am
SYD
- STL
2 stops38h 27m
Delta
Deal found 6/12![Delta logo]()
$1,376
This Gurufare deal was found by Cheapflights users on 6/9. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/27:23 pm
STL
- SYD
1 stop20h 32m
Air New Zealand
Sun 7/1210:20 am
SYD
- STL
1 stop22h 57m
Air New Zealand
Deal found 6/9![Air New Zealand logo]()
$1,375
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:01 am
STL
- SYD
2 stops33h 54m
United Airlines
Sun 7/1210:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,380
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:37 am
STL
- SYD
1 stop33h 53m
Qantas Airways
Thu 7/165:50 pm
SYD
- STL
1 stop21h 09m
Qantas Airways
Deal found 6/9![Qantas Airways logo]()
$1,481
This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/245:59 pm
STL
- SYD
3 stops70h 21m
Air Canada
Fri 7/319:20 am
SYD
- STL
2 stops29h 37m
Air Canada
Deal found 6/9![Air Canada logo]()
$1,426
One-way flights from St. Louis to SydneySearch for one-way flight options from St. Louis to Sydney. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
Search for one-way flight options from St. Louis to Sydney. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:08 pm
STL
- SYD
2 stops44h 22m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$625
This Trip.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:10 pm
STL
- SYD
2 stops32h 40m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$706
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 6/11![United Airlines logo]()
$751
This Ovago deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:55 am
STL
- SYD
1 stop31h 25m
Air New Zealand
Deal found 6/11![Air New Zealand logo]()
$801
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/242:50 pm
STL
- SYD
3 stops49h 30m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$3,956
This BusinessClass deal was found by Cheapflights users on 6/9. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/248:40 am
STL
- SYD
1 stop31h 40m
Singapore Airlines
Deal found 6/9![Singapore Airlines logo]()
$5,843
Find flight deals from St. Louis to Sydney
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,041 (oojo) |
One-way from | $625 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $1,560 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Sydney 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 13, 2026.
Use the filters below to find and compare flights from St. Louis to Sydney that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Tue 10/13
4:39 pm-8:20 am
2 stops23h 41m
Sydney Kingsford Smith
Wed 11/18
11:20 am-12:20 pm
3 stops42h 00m
$1,407
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Tue 10/13
6:30 am-9:45 am
2 stops35h 15m
Sydney Kingsford Smith
Wed 11/18
11:15 am-11:42 pm
1 stop29h 27m
$1,409
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Tue 10/13
6:30 am-8:05 am
1 stop33h 35m
Sydney Kingsford Smith
Fri 11/13
7:00 am-11:42 pm
2 stops57h 42m
$1,419
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Fri 7/24
5:10 am-7:00 am
2 stops34h 50m
Sydney Kingsford Smith
Fri 7/31
9:30 am-4:33 pm
2 stops22h 03m
$1,451
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 9/7
8:42 am-6:55 am
1 stop31h 13m
Sydney Kingsford Smith
Mon 9/14
10:20 am-6:39 pm
1 stop23h 19m
$1,457
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Wed 9/23
4:40 pm-7:00 am
2 stops23h 20m
Sydney Kingsford Smith
Wed 10/7
11:20 am-6:43 pm
1 stop23h 23m
$1,458
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Sat 11/14
4:30 pm-7:00 am
2 stops45h 30m
Sydney Kingsford Smith
Tue 11/24
11:50 am-4:35 pm
1 stop21h 45m
$1,478
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Thu 9/3
12:59 pm-8:45 am
3 stops28h 46m
Sydney Kingsford Smith
Wed 9/16
11:55 am-11:40 pm
3 stops26h 45m
$2,096
Quickest round-trip
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Mon 11/16
7:06 pm-9:15 am
1 stop21h 09m
Sydney Kingsford Smith
Sat 11/21
12:10 pm-5:53 pm
1 stop22h 43m
$2,259
St. LouisSydney
STL - SYD
STLSYD
Lambert-St Louis
Wed 11/18
1:30 pm-10:30 am
3 stops28h 00m
Sydney Kingsford Smith
Sun 12/6
9:55 am-10:06 pm
2 stops29h 11m
$4,348
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Sydney
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Sydney in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Sydney flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Sydney
Have a flexible travel schedule? Discover the best time to fly to Sydney from St. Louis with our price prediction graph.
STL-SYD
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 Sydney
What is the cheapest month to book a flight from St. Louis to Sydney?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Sydney (average of $1,233). Flying from St. Louis to Sydney in December is currently the most expensive (average of $1,664). 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.
How much does it cost to fly round-trip from St. Louis to Sydney?
Reviews of airlines servicing Sydney
Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated June 13, 2026.
Get a feel of what it's like to fly with Fiji Airways,Qantas Airways, andUnited Airlines from St. Louis to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.5
Entertainment
7.5
Overall
8.1
Boarding
8.2
Crew
8.6
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Entertainment
7.5
Overall
8.1
Boarding
8.2
Crew
8.6
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Entertainment
7.5
Overall
8.1
Boarding
8.2
Crew
8.6
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Entertainment
7.5
Overall
8.1
Boarding
8.2
Crew
8.6
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
Food
7.5
Entertainment
7.5
Overall
8.1
Boarding
8.2
Crew
8.6
Comfort
8.1
Reviews
1 / 19
8.0
ExcellentPaul,Mar 2026
YVR - NAN
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Top 4 airlines flying from St. Louis to Sydney
Discover the top 4 airlines that operate flights from St. Louis to Sydney. 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 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$887 | Average$1,214 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,079 | Average$1,470 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,094 | Average$1,357 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,233 | Average$1,497 | FlexibilityNo cancel fee | On-time71% |