$620 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 6/1. 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

Wed, May 20 - Thu, May 28
Multiple Airlines Logo
9:20 am - 12:06 pm
SYD
-
STL
41h 46m
2 stops
Multiple Airlines Logo
4:48 pm - 7:20 am
STL
-
SYD
23h 32m
2 stops
$1,066Multiple Airlines
Wed, May 20 - Thu, May 28
Air Canada Logo
9:20 am - 8:25 pm
SYD
-
STL
26h 05m
2 stops
Air Canada Logo
1:05 pm - 7:20 am
STL
-
SYD
51h 15m
3 stops
$1,109Air Canada
Mon, Jun 1 - Mon, Jun 8
American Airlines Logo
9:00 am - 4:33 pm
MEL
-
STL
22h 33m
2 stops
American Airlines Logo
5:18 pm - 5:00 am
STL
-
MEL
20h 42m
1 stop
$1,188American Airlines
Wed, May 20 - Thu, May 28
Air Canada Logo
9:20 am - 8:25 pm
SYD
-
STL
50h 05m
3 stops
Air Canada Logo
1:05 pm - 7:20 am
STL
-
SYD
51h 15m
3 stops
$1,222Air Canada
Mon, Jun 1 - Mon, Jun 8
Qantas Airways Logo
9:10 am - 11:56 pm
SYD
-
STL
29h 46m
1 stop
Qantas Airways Logo
6:35 am - 7:05 am
STL
-
SYD
33h 30m
1 stop
$1,447Qantas Airways
Thu, Jul 23 - Tue, Aug 11
American Airlines Logo
9:10 am - 7:51 pm
SYD
-
STL
25h 41m
2 stops
American Airlines Logo
6:00 am - 7:05 am
STL
-
SYD
34h 05m
1 stop
$1,484American Airlines
Thu, Oct 8 - Mon, Oct 12
Air New Zealand Logo
12:10 pm - 10:30 pm
MEL
-
STL
26h 20m
2 stops
Air New Zealand Logo
6:15 am - 10:55 am
STL
-
MEL
36h 40m
2 stops
$1,572Air New Zealand
Mon, Sep 7 - Sun, Sep 27
United Airlines Logo
10:55 am - 11:00 pm
MEL
-
STL
27h 05m
2 stops
United Airlines Logo
11:45 am - 8:15 am
STL
-
MEL
29h 30m
2 stops
$1,745United Airlines
Thu, Oct 8 - Mon, Oct 12
Qantas Airways Logo
9:45 am - 11:05 pm
MEL
-
STL
29h 20m
1 stop
Qantas Airways Logo
6:30 am - 6:45 am
STL
-
MEL
32h 15m
1 stop
$1,906Qantas Airways
Wed, May 13 - Sat, May 16
United Airlines Logo
6:10 am - 4:57 pm
LST
-
STL
49h 47m
3 stops
United Airlines Logo
8:30 am - 4:05 pm
STL
-
LST
40h 35m
2 stops
$2,513United 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.

What is the cheapest flight to St. Louis?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Melbourne, at $1,066 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $295 in the last 3 days.

What is the cheapest month to fly to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to St. Louis is September, where tickets cost $948 on average for return flights. On the other hand, the most expensive months are April and July, where the average cost of tickets from Australia is $1,640 and $1,608 respectively. For one-way flights, the best month to travel is June with an average price of $820.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$726
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Melbourne to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Melbourne, at $1,066 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $295 in the last 3 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 1,732 direct flights from within Australia to St. Louis. The most common day for departures is Friday, 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 9613 reviews
7.3Comfort
7.1Entertainment
7.7Boarding
6.6Food
8.1Crew
Airline reviews

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

2.0 MediocreDr. Joseph, Apr 2026
CLT - ORD
Read more United Airlines reviews

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

The rear seat on the second leg should be illegal. There’s no way you should make somebody sit that close to the washroom. Very awkward.

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

The entertainment options on the seat back video boards were nice.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

Dinner was good, but the breakfast served in the morning was horrible.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

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)