$595 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 8/27. 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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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

Tue, Jul 7 - Tue, Sep 1
United Airlines Logo
10:20 am - 9:26 pm
SYD
-
STL
26h 06m
2 stops
United Airlines Logo
4:40 pm - 6:55 am
STL
-
SYD
23h 15m
2 stops
$1,013United Airlines
Mon, Jul 20 - Mon, Jul 27
United Airlines Logo
9:30 am - 11:57 pm
SYD
-
STL
29h 27m
2 stops
United Airlines Logo
7:23 pm - 6:55 am
STL
-
SYD
20h 32m
1 stop
$1,014United Airlines
Mon, Jul 20 - Mon, Jul 27
United Airlines Logo
10:20 am - 6:17 pm
SYD
-
STL
22h 57m
1 stop
United Airlines Logo
7:23 pm - 6:55 am
STL
-
SYD
20h 32m
1 stop
$1,023United Airlines
Mon, Jul 6 - Sun, Aug 30
Delta Logo
9:15 am - 12:43 am
SYD
-
STL
30h 28m
2 stops
Delta Logo
11:13 am - 6:50 am
STL
-
SYD
28h 37m
2 stops
$1,055Delta
Fri, Aug 21 - Mon, Aug 31
Delta Logo
10:00 am - 11:26 pm
MEL
-
STL
28h 26m
2 stops
Delta Logo
11:00 am - 7:50 am
STL
-
MEL
29h 50m
2 stops
$1,073Delta
Mon, Jul 20 - Mon, Jul 27
Air New Zealand Logo
10:20 am - 6:17 pm
SYD
-
STL
22h 57m
1 stop
Air New Zealand Logo
7:23 pm - 6:55 am
STL
-
SYD
20h 32m
1 stop
$1,073Air New Zealand
Wed, Aug 12 - Sun, Aug 16
American Airlines Logo
9:10 am - 8:26 pm
SYD
-
STL
26h 16m
2 stops
American Airlines Logo
12:45 pm - 7:05 am
STL
-
SYD
27h 20m
2 stops
$1,085American Airlines
Thu, Aug 6 - Mon, Aug 10
American Airlines Logo
9:10 am - 6:05 pm
SYD
-
STL
23h 55m
2 stops
American Airlines Logo
12:55 pm - 7:05 am
STL
-
SYD
27h 10m
2 stops
$1,086American Airlines
Wed, Aug 5 - Sun, Aug 9
Air Canada Logo
6:00 am - 2:04 pm
MEL
-
STL
47h 04m
3 stops
Air Canada Logo
8:55 am - 11:35 am
STL
-
MEL
35h 40m
3 stops
$1,205Air Canada
Wed, Aug 5 - Sun, Aug 9
Air Canada Logo
6:00 am - 2:04 pm
MEL
-
STL
47h 04m
3 stops
Air Canada Logo
8:55 am - 11:35 am
STL
-
MEL
35h 40m
3 stops
$1,206Air Canada
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.

What is the cheapest flight to St. Louis?

These are the best round-trip prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to St. Louis was found on the route from Sydney, at $1,013 return. The most popular connection is from Melbourne to St. Louis and KAYAK users have found round-trip deals for as low as $1,073 in the last 5 days.

Good to know

Low seasonMarch
Cheapest flight$595
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Sydney to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 5 days, the cheapest flight deal to St. Louis was found on the route from Sydney, at $1,013 return. The most popular connection is from Melbourne to St. Louis and KAYAK users have found round-trip deals for as low as $1,073 in the last 5 days.

  • 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 3,119 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 9875 reviews
6.6Food
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
Airline reviews

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

10.0 ExcellentNerissa, Jun 2026
ORD - ANC
Read more United Airlines reviews

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Flight attendants were great. Food mediocre. Bamboo utensils not Great especially if you have to cut something. Seating a bit crowded.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

The crew was the worst ive ever had in my life flying with United Airlines, letting another person move my bag without asking and then the staff saying would the floor be better after I kept begging saying dont move my bag it has fragile things inside. This incident truly makes me they favor other customers more and I dont want to worry about being on the tail end. Especially if they dont listen any input, no care for what I asked but accommodated those who are reckless and disturb others more...

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

United has been holding my money for a cancel on another ticket they wouldn’t let me fly for going on 5 months. Terrible service I wouldn’t choose to buy tickets or fly with united again. Very bad experience generally dishonorable and poor service .

The seats were very nice in premium economy. The service was good. The flight was slightly bumpy. Would have appreciated more updates from the pilots.

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

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