Cheap flights from Sydney to St. Louis from $972
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to St. Louis departing on 13/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Find the cheapest flights from Sydney to St. Louis
Cheap return flights
Cheap one-way flights
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.American Airlines flights from Sydney to St. Louis
Our best American Airlines deals on Sydney to St. Louis flight tickets
Qantas Airways flights from Sydney to St. Louis
Our best Qantas Airways deals on Sydney to St. Louis flight tickets
momondo Fare Finder
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
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 21/10
10:10-13:44
2 stops43h 34m
Lambert-St Louis
Sat 24/10
15:20-06:55
1 stop23h 35m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 21/10
10:10-13:44
2 stops43h 34m
Lambert-St Louis
Sat 24/10
15:20-06:55
1 stop23h 35m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 21/10
10:10-10:50
2 stops40h 40m
Lambert-St Louis
Sat 24/10
15:20-06:55
1 stop23h 35m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Sun 22/11
11:10-23:58
1 stop29h 48m
Lambert-St Louis
Sun 29/11
14:48-06:55
1 stop23h 07m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 18/11
09:15-14:13
1 stop21h 58m
Lambert-St Louis
Sat 12/12
16:30-09:05
2 stops47h 35m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 18/11
11:50-16:57
2 stops22h 07m
Lambert-St Louis
Sat 12/12
16:30-09:05
2 stops47h 35m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Sun 22/11
06:20-12:26
2 stops23h 06m
Lambert-St Louis
Sun 29/11
06:00-06:25
1 stop31h 25m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Sun 22/11
06:20-12:26
2 stops23h 06m
Lambert-St Louis
Sun 29/11
10:21-09:00
2 stops29h 39m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Wed 18/11
14:05-18:16
1 stop21h 11m
Lambert-St Louis
Sat 12/12
18:44-06:55
1 stop43h 11m
SydneySt. Louis
SYD Sydney Kingsford Smith - STL Lambert-St Louis
SYDSTL
Sydney Kingsford Smith
Thu 17/12
06:55-18:06
2 stops28h 11m
Lambert-St Louis
Sun 27/12
07:00-06:55
1 stop30h 55m
See travel insights to St. Louis from
How to get the cheapest flight ticket from Sydney to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Sydney and St. Louis?
Prices are currently low for flights on this route.
Typical prices usually range from $1,635 to $1,803.The lowest price recently found on this route was $1,557.
What is the cheapest month to fly to St. Louis?
The month of July is, on average, the cheapest month to fly to St. Louis from Sydney, with most prices found around $1,524. If you aren’t able to travel to St. Louis during the month of July, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,530.
Can stopping save me money on Sydney to St. Louis flights?
You could potentially save up to 1% on your flight if you consider stops on a Sydney to St. Louis flight.
What is the cheapest airline that flies from Sydney Kingsford Smith to Lambert-St Louis?
American Airlines and United Airlines are the most popular carriers operating from Sydney Kingsford Smith to Lambert-St Louis
Which airlines fly to St. Louis?
Qantas Airways, United Airlines and American Airlines are the top three most popular airlines that fly to St. Louis from Sydney according to our data. Qantas Airways is the first choice among our users, with 34% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
When to book flights from Sydney to St. Louis
Cheap Sydney to St. Louis (SYD to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Sydney to St. Louis
Frequently asked questions about flying from Sydney to St. Louis
How far is Sydney Kingsford Smith to Lambert-St Louis by plane?
Sydney Kingsford Smith and Lambert-St Louis are 14576.1 km apart from one another. By plane, this route typically takes 22h 07m.
When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
Prices for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
As of October 2026, there are 3 operators available to choose from for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Sydney to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Sydney to St. Louis is Qantas Airways, representing 34% of all bookings. The subsequent popular airlines are United Airlines at 34% and American Airlines at 32%.
Best airlines flying from Sydney to St. Louis
Compare and see reviews for airlines that fly from Sydney to St. Louis with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,448 | Free cancellation | Rating 7.4 10,322 reviews | |||
| PriceFrom $1,496 | Free cancellation | Rating 7.0 12,146 reviews | |||
| PriceFrom $1,505 | Free cancellation | Rating 7.5 1,104 reviews |
Travelling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Sydney to St. Louis?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Sydney.
Can I find flights from Sydney to St. Louis with flexible booking policies on momondo?
Flights from Sydney to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Sydney to St. Louis?
Once you have performed a search for Sydney to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Sydney to St. Louis right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to St. Louis from Sydney. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.