$593 Find Cheap Flights from Australia to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Australia to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Australia to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Australia to St. Louis

Fri, Aug 28 - Mon, Sep 7
American Airlines Logo
9:10 am - 5:37 pm
SYD
-
STL
47h 27m
2 stops
American Airlines Logo
5:42 am - 6:55 am
STL
-
SYD
34h 13m
1 stop
$983American Airlines
Wed, Jul 15 - Wed, Oct 14
Qantas Airways Logo
9:10 am - 11:59 pm
SYD
-
STL
29h 49m
1 stop
Qantas Airways Logo
6:30 am - 7:30 am
STL
-
SYD
33h 00m
1 stop
$988Qantas Airways
Wed, Aug 26 - Tue, Sep 8
American Airlines Logo
9:10 am - 10:59 pm
SYD
-
STL
28h 49m
1 stop
American Airlines Logo
6:36 am - 7:05 am
STL
-
SYD
33h 29m
2 stops
$999American Airlines
Wed, Aug 26 - Wed, Sep 2
American Airlines Logo
9:10 am - 4:41 pm
SYD
-
STL
22h 31m
2 stops
American Airlines Logo
6:36 am - 7:05 am
STL
-
SYD
33h 29m
2 stops
$1,000American Airlines
Tue, Jul 14 - Tue, Oct 13
American Airlines Logo
9:10 am - 11:59 pm
SYD
-
STL
29h 49m
1 stop
American Airlines Logo
1:24 pm - 8:05 am
STL
-
SYD
26h 41m
2 stops
$1,002American Airlines
Wed, Aug 26 - Sun, Sep 6
American Airlines Logo
9:10 am - 10:59 pm
SYD
-
STL
28h 49m
1 stop
American Airlines Logo
6:45 pm - 6:55 am
STL
-
SYD
21h 10m
1 stop
$1,007American Airlines
Wed, Aug 26 - Wed, Sep 9
American Airlines Logo
12:00 pm - 4:41 pm
SYD
-
STL
19h 41m
1 stop
American Airlines Logo
6:30 am - 7:05 am
STL
-
SYD
33h 35m
1 stop
$1,008American Airlines
Wed, Aug 5 - Sun, Aug 9
Air Canada Logo
6:00 am - 2:02 pm
MEL
-
STL
47h 02m
3 stops
Air Canada Logo
8:55 am - 11:35 am
STL
-
MEL
35h 40m
3 stops
$1,217Air Canada
Mon, Sep 7 - Sun, Sep 27
United Airlines Logo
10:55 am - 11:57 am
MEL
-
STL
40h 02m
2 stops
United Airlines Logo
6:15 am - 8:15 am
STL
-
MEL
35h 00m
2 stops
$1,264United Airlines
Mon, Sep 7 - Sun, Sep 27
United Airlines Logo
10:55 am - 10:59 pm
MEL
-
STL
27h 04m
2 stops
United Airlines Logo
7:08 am - 8:15 am
STL
-
MEL
34h 07m
1 stop
$1,265United Airlines
Booking Insights

KAYAK's insights & trends for flights to St. Louis

Get data-powered insights and trends for flights to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular routes to St. Louis on KAYAK are from Sydney, which takes 20h 09m, and Melbourne, which takes 27h 04m.

How many direct flights to St. Louis are there each day?

There are around 426 direct flights from within Australia to St. Louis every day. Most flights depart in the morning, with 32% of flights departing in the morning.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$593
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Sydney to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    There are 13 miles between St. Louis city center and Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    When flying to St. Louis, you'll arrive at Lambert-St Louis Airport (STL). The airport is also known as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • How does KAYAK find such low prices on flights to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 2,981 direct flights from within Australia to St. Louis. The most common day for departures is Sunday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top airline flying from Australia to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Australia to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9845 reviews
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

4.0 OkayDavid, Jun 2026
FAR - DEN
Read more United Airlines reviews

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Airline tickets are not cheap. You expect reliable competent service. Thanks to canceled flights and botched transfers we arrived at our destination two days late. This is not acceptable

The flight got delayed. They forgot to bring the drinks when I asked for it. The toilet is messy.

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

St. Louis (STL)