$1,098 Find Cheap Flights from Australia to St. Louis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 5/29. 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

Fri, May 29 - Tue, Jun 2
Air Canada Logo
6:00 am - 12:06 pm
MEL
-
STL
45h 06m
3 stops
Air Canada Logo
2:15 pm - 11:35 am
STL
-
MEL
30h 20m
3 stops
$1,098Air Canada
Fri, May 29 - Tue, Jun 2
Air Canada Logo
6:00 am - 12:06 pm
MEL
-
STL
45h 06m
3 stops
Air Canada Logo
2:15 pm - 11:35 am
STL
-
MEL
30h 20m
3 stops
$1,099Air Canada
Fri, May 15 - Fri, May 22
Air Canada Logo
6:00 am - 8:09 pm
MEL
-
STL
29h 09m
3 stops
Air Canada Logo
7:05 am - 11:35 am
STL
-
MEL
37h 30m
3 stops
$1,129Air Canada
Tue, May 12 - Tue, May 19
American Airlines Logo
9:45 am - 11:59 pm
MEL
-
STL
29h 14m
1 stop
American Airlines Logo
12:27 pm - 6:45 am
STL
-
MEL
27h 18m
2 stops
$1,144American Airlines
Sun, May 10 - Sun, May 17
American Airlines Logo
9:45 am - 11:59 pm
MEL
-
STL
29h 14m
1 stop
American Airlines Logo
6:21 am - 6:45 am
STL
-
MEL
33h 24m
1 stop
$1,145American Airlines
Fri, May 15 - Fri, May 22
United Airlines Logo
10:55 am - 8:43 pm
MEL
-
STL
24h 48m
2 stops
United Airlines Logo
1:13 pm - 7:30 am
STL
-
MEL
27h 17m
2 stops
$1,156United Airlines
Sun, May 10 - Sun, May 17
Delta Logo
10:00 am - 7:03 pm
MEL
-
STL
24h 03m
2 stops
Delta Logo
3:11 pm - 7:50 am
STL
-
MEL
49h 39m
2 stops
$1,164Delta
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
10:55 am - 9:13 pm
MEL
-
STL
25h 18m
2 stops
Multiple Airlines Logo
10:25 am - 8:15 am
STL
-
MEL
30h 50m
2 stops
$1,169Multiple Airlines
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
$1,211Multiple Airlines
Tue, Jun 2 - Sat, Jun 6
United Airlines Logo
6:10 am - 3:46 pm
LST
-
STL
48h 36m
3 stops
United Airlines Logo
7:23 pm - 4:05 pm
STL
-
LST
29h 42m
2 stops
$2,478United 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 $1,098 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 July and April, where the average cost of tickets from Australia is $1,649 and $1,640 respectively. For one-way flights, the best month to travel is June with an average price of $820.

Good to know

Low seasonFebruary
Cheapest flight$1,098
Best time to beat the crowds with an average 17% 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 $1,098 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 1,508 direct flights from within Australia to St. Louis. The most common day for departures is Sunday, with 15% 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 9594 reviews
8.1Crew
7.1Entertainment
7.3Comfort
6.6Food
7.7Boarding
Airline reviews

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

10.0 ExcellentDr. Joseph, Apr 2026
ORD - CLT
Read more United Airlines reviews

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

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

Lounges are packed and very poor, food is really bad, for business class in an airline is well below expectations

The international / itallian speakers did not seem as friendly and professional as the others. Drink selections were denied ( a beer) until questioned about lack of ANY beer on the plane and then four options were given.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

It was a more comfortable seat don't get stuck in middle, makes for uncomfortable situation

Business class would have been better , poor quality blanket , services

First time flying with UA and it was a great experience. Thank you

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

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