Cheap flights from St. Louis (STL) to Sydney (SYD) from $1,125
This is the cheapest one-way flight price, found on 9/19. Prices may vary by date and flight preferences.
How to find the cheapest flight from St. Louis (STL) to Sydney (SYD)
All the information you need to plan the best STL to SYD flight in 2023: compare St. Louis to Sydney flight prices with the expected peak season, weather and rainfall in Sydney.
Popular in | December |
|---|---|
Cheapest in | October |
Round-trip from | $1,356 |
One-way from | $1,351 |
STL - SYD Price | $1,356 - $2,782 |
|---|---|
SYD Temperature | 51.8 - 71.6 °F |
SYD Rainfall | 2 - 5.1 inches |
What is the cheapest day to fly round-trip from St. Louis to Sydney?
It’s generally more expensive to depart on a Saturday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
How far in advance should I book a flight from St. Louis to Sydney?
Find a great deal and save up to 37% by booking at least 39 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Sydney within the next two weeks, with the cheapest ticket starting at $2,615.
What is the cheapest month to fly from St. Louis to Sydney?
Flights from St. Louis to Sydney lean towards being more expensive in December. Prices are generally better when you fly from St. Louis to Sydney in October, with the cheapest ticket starting at $1,314.
When is the cheapest time to fly from St. Louis to Sydney (STL - SYD)?
It’s optimal to fly from St. Louis to Sydney in the morning. By choosing this option you can save up to 35% on the cost of your flight, compared to a flight in the evening.
Cheap United Airlines flights from St. Louis to Sydney
Peruse some of the lowest-priced United Airlines flights we've found from St. Louis to Sydney. It's recommended that users confirm their flight details before booking.
Cheap Qantas Airways flights from St. Louis to Sydney
Browse through some of the cheapest Qantas Airways flights traveling from St. Louis to Sydney. Check back soon if you're not seeing flights that suit your needs.
Cheap St. Louis to Sydney flights in September & October 2023
The best prices found for STL to SYD flights for September, October
These are some of the best deals we've found on flights to Sydney in 2023 at this time. Check back soon for alternative fares.
St. Louis to Sydney 2023 flight deals
Cheap flights to Sydney from St. Louis found for this year
These are some of the best deals we've found on flights to Sydney in 2023 at this time. Check back soon for alternative fares.
St. Louis to Sydney flights leaving soon
Late deals on return flights to Sydney from St. Louis, departing today and this week
Book one of these great deals on flights from St. Louis to Sydney. To prevent any unwanted surprises, users should verify their flight info before booking.
One-way flights to Sydney from St. Louis
The cheapest one-way flights from St. Louis to Sydney
Users traveling one-way from St. Louis to Sydney can select one of these great deals. Users needing a return flight from St. Louis to Sydney should utilize the search form above.
Find flights from St. Louis to Sydney within your budget
Use the slider to find flights from St. Louis to Sydney that fit your budget.
Fly from
Fly to
Budget
$1,125 - $2,120
Route
Depart
Return
Price
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Mon 3/11
2 stops29h 50m
Sydney Kingsford Smith
Sun 3/24
2 stops39h 28m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Tue 3/12
2 stops53h 50m
Sydney Kingsford Smith
Wed 3/20
2 stops39h 28m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Sun 11/26
2 stops31h 50m
Sydney Kingsford Smith
Mon 12/25
1 stop27h 13m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Sun 3/3
2 stops32h 19m
Sydney Kingsford Smith
Sun 3/10
2 stops28h 12m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Wed 3/6
2 stops29h 35m
Sydney Kingsford Smith
Sun 3/31
2 stops23h 46m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Tue 11/28
1 stop20h 37m
Sydney Kingsford Smith
Sun 12/24
1 stop19h 59m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Sat 11/25
1 stop20h 31m
Sydney Kingsford Smith
Thu 12/21
1 stop19h 27m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Mon 2/12
2 stops35h 10m
Sydney Kingsford Smith
Sun 2/18
2 stops42h 36m
Lambert-St LouisSydney Kingsford Smith
STL - SYD
STLSYD
Lambert-St Louis
Tue 3/12
2 stops32h 55m
Sydney Kingsford Smith
Tue 4/2
2 stops30h 29m
Reviews of airlines servicing Sydney
Get a feel of what it's like to fly with United Airlines, Qantas Airways and Delta from St. Louis to Sydney by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Boarding
Food
Overall
Crew
Entertainment
Reviews
the seat is so narrow. i cant move my legs
Comfort
Boarding
Food
Overall
Crew
Entertainment
Reviews
the seat is so narrow. i cant move my legs
Comfort
Boarding
Food
Overall
Crew
Entertainment
Reviews
the seat is so narrow. i cant move my legs
Comfort
Boarding
Food
Overall
Crew
Entertainment
Reviews
the seat is so narrow. i cant move my legs
Comfort
Boarding
Food
Overall
Crew
Entertainment
Reviews
the seat is so narrow. i cant move my legs
Comfort
Boarding
Food
Overall
Crew
Entertainment
Reviews
the seat is so narrow. i cant move my legs
Related info for your journey
Useful info, stats and facts about St. Louis to Sydney flights.
Can I find flights from St. Louis to Sydney for under $1,200 on Cheapflights?
Yes, there are multiple flights from St. Louis to Sydney for under $1,200. The cheapest flight booked recently is on Air Canada for just $1,125, but on average you can expect to pay $1,372.
Are there last-minute flights available from St. Louis to Sydney for under $2,600?
There are currently 4+ open flights from St. Louis to Sydney within the next 7 days for less than $2,600.
What are the cheapest airlines flying from St. Louis to Sydney round-trip?
According to our current data, Air Canada ($1,125), United Airlines ($1,360), and American Airlines ($1,362) offers the cheapest pricing from St. Louis to Sydney. Air Canada is priced at 44% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from St. Louis to Sydney one-way?
To fly one-way, consider booking your trip with Air New Zealand, which is currently one of the cheapest options available, starting at $1,351. Qantas Airways flights start at $1,752 while deals on American Airlines start at $1,756 one-way.
What are the most popular airlines that fly from St. Louis to Sydney?
Consider American Airlines, Air Canada or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to Sydney.
What does STL to SYD mean?
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Sydney Kingsford Smith Airport flight would often be abbreviated as a STL to SYD flight.