$675+ Cheap flights from Sydney (SYD) to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
Nov 18 — Nov 251
Round-trip
1 adult, Economy
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Find cheap flights from Sydney to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Sydney to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Sydney to St. LouisExplore the most affordable flight options available from Sydney to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2026.
Explore the most affordable flight options available from Sydney to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2026.
This American Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 10/2110:10 am -
1 stop29h 36m
Sat 10/243:20 pm -
2 stops35h 35m
Deal found 10/14![American Airlines logo]()
$1,113
This Cathay Pacific deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:05 pm -
2 stops45h 52m
Sat 10/247:10 pm -
2 stops33h 40m
Deal found 10/14![Cathay Pacific logo]()
$1,748
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 12/189:15 am -
1 stop30h 15m
Sat 1/26:09 pm -
2 stops43h 11m
Deal found 10/16![United Airlines logo]()
$1,808
This Air New Zealand deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 12/189:55 am -
3 stops28h 27m
Sat 1/28:05 am -
3 stops31h 30m
Deal found 10/16![Multiple Airlines logo]()
$2,011
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 10/2111:20 am -
1 stop23h 23m
Sat 10/243:12 pm -
1 stop23h 48m
Deal found 10/14![United Airlines logo]()
$2,077
This SmartFares deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1811:50 am -
2 stops25h 33m
Sat 1/25:59 pm -
2 stops45h 36m
Deal found 10/16![Air New Zealand logo]()
$2,350
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 12/189:15 am -
1 stop24h 29m
Mon 1/45:07 pm -
1 stop23h 13m
Deal found 10/14![United Airlines logo]()
$2,363
This KAYAK deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 12/1811:50 am -
2 stops27h 40m
Mon 1/46:15 am -
2 stops37h 35m
Deal found 10/14![Air New Zealand logo]()
$2,434
Best flights from Sydney to St. LouisDiscover carefully curated flight deals from Sydney to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 19, 2026.
Discover carefully curated flight deals from Sydney to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 19, 2026.
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 3/49:20 am -
2 stops24h 49m
Mon 3/297:06 pm -
1 stop20h 49m
Deal found 10/16![United Airlines logo]()
$1,015
This American Airlines deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 1/192:05 pm -
1 stop26h 25m
Wed 2/32:28 pm -
2 stops22h 57m
Deal found 10/17![American Airlines logo]()
$1,025
This Air New Zealand deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 3/42:05 pm -
3 stops26h 14m
Mon 3/291:30 pm -
3 stops27h 15m
Deal found 10/16![Multiple Airlines logo]()
$1,488
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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 1/199:20 am -
1 stop21h 46m
Wed 2/38:30 am -
1 stop28h 50m
Deal found 10/15![United Airlines logo]()
$1,015
This American Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 3/3110:10 am -
1 stop29h 46m
Sun 4/42:24 pm -
2 stops25h 01m
Deal found 10/16![American Airlines logo]()
$1,478
This Air New Zealand deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/1911:50 am -
3 stops28h 30m
Wed 2/310:45 am -
3 stops28h 50m
Deal found 10/18![Multiple Airlines logo]()
$1,571
Last-minute flights from Sydney to St. LouisDiscover last-minute flight deals from Sydney to St. Louis. Data last updated October 19, 2026 and is based on user searches.
Discover last-minute flight deals from Sydney to St. Louis. Data last updated October 19, 2026 and is based on user searches.
This BusinessClass deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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.
Mon 10/199:55 am -
2 stops29h 51m
Mon 11/28:10 am -
2 stops53h 40m
Deal found 10/17![Japan Airlines logo]()
$6,140
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 10/1910:30 am -
2 stops25h 46m
Mon 11/22:55 pm -
1 stop23h 05m
Deal found 10/18![United Airlines logo]()
$11,126
This Air Canada deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 10/1910:20 am -
3 stops48h 21m
Mon 11/24:05 pm -
2 stops48h 30m
Deal found 10/17![Air Canada logo]()
$12,332
This American Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 10/2110:10 am -
1 stop29h 36m
Sat 10/243:20 pm -
2 stops35h 35m
Deal found 10/14![American Airlines logo]()
$1,113
This Cathay Pacific deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:05 pm -
2 stops45h 52m
Sat 10/247:10 pm -
2 stops33h 40m
Deal found 10/14![Cathay Pacific logo]()
$1,748
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” 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 10/2111:20 am -
1 stop23h 23m
Sat 10/243:12 pm -
1 stop23h 48m
Deal found 10/14![United Airlines logo]()
$2,077
This Turkish Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:05 pm -
3 stops39h 16m
Sat 10/248:00 am -
3 stops67h 25m
Deal found 10/14![Turkish Airlines logo]()
$3,103
One-way flights from Sydney to St. LouisSearch for one-way flight options from Sydney to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.
Search for one-way flight options from Sydney to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 11/139:15 am -
1 stop21h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![United Airlines logo]()
$675
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/1311:10 am -
2 stops26h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![American Airlines logo]()
$676
This Air New Zealand deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 11/1311:50 am -
3 stops28h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Multiple Airlines logo]()
$915
This Delta deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/1510:40 am -
2 stops28h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Delta logo]()
$1,057
This Expedia deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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.
Mon 1/1111:30 am -
2 stops44h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Multiple Airlines logo]()
$1,090
This Delta deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 1/1310:40 am -
2 stops39h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Delta logo]()
$1,109
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 1/151:20 pm -
1 stop21h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![United Airlines logo]()
$1,117
Find flight deals from Sydney to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to St. Louis (STL). 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 October 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,014 (Bravofly) |
One-way from | $675 (United Airlines) |
Popular in | January |
Cheapest in | July |
Average price | $1,254 |
Cheapflights Fare Finder
Customize your flight search to find flights from Sydney to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 19, 2026.
Use the filters below to find and compare flights from Sydney to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Fri 11/13
9:15 am-9:40 pm
2 stops29h 25m
Lambert-St Louis
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$675
Quickest round-trip
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Fri 11/13
11:10 am-8:22 pm
2 stops26h 12m
Lambert-St Louis
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$675
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Fri 11/13
11:50 am-11:24 pm
3 stops28h 34m
Lambert-St Louis
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$915
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Thu 3/4
9:20 am-5:09 pm
2 stops24h 49m
Lambert-St Louis
Mon 3/29
7:06 pm-7:55 am
1 stop20h 49m
$1,015
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Tue 1/19
9:20 am-2:06 pm
1 stop21h 46m
Lambert-St Louis
Wed 2/3
8:30 am-6:20 am
1 stop28h 50m
$1,015
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Tue 1/19
2:05 pm-11:30 pm
1 stop26h 25m
Lambert-St Louis
Wed 2/3
2:28 pm-6:25 am
2 stops22h 57m
$1,025
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 3/31
10:10 am-11:56 pm
1 stop29h 46m
Lambert-St Louis
Sun 4/4
2:24 pm-6:25 am
2 stops25h 01m
$1,478
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Thu 3/4
2:05 pm-11:19 pm
3 stops26h 14m
Lambert-St Louis
Mon 3/29
1:30 pm-8:45 am
3 stops27h 15m
$1,488
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Tue 1/19
11:50 am-11:20 pm
3 stops28h 30m
Lambert-St Louis
Wed 2/3
10:45 am-8:35 am
3 stops28h 50m
$1,571
Sorted by cheapest first
Compare providers for flights from Sydney to St. Louis
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 Sydney to St. Louis in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Sydney-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sydney-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sydney-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Sydney-St. Louis 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 Sydney-St. Louis 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 Sydney to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Sydney with our price prediction graph.
SYD-STL
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 Sydney to St. Louis
What is the cheapest month to book a flight from Sydney to St. Louis?
Currently, July is the cheapest month in which you can book a flight from Sydney to St. Louis (average of $1,060). Flying from Sydney to St. Louis in January is currently the most expensive (average of $2,201). 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 Sydney to St. Louis?
Airfare is below average for this route at the moment.
Sydney to St. Louis flights typically cost between $1,137 and $1,254 in March.The cheapest round-trip price found within the last 5 days was $1,014 on Qantas Airways (Mar 4-Mar 29).
Related info for your journey
Find useful and relevant information for your journey from Sydney to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Collinsville
Edwardsville
Glencoe
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