$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 7/31. 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

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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
$1,065Multiple 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
$1,066Multiple Airlines
Fri, May 22 - Fri, May 29
Air Canada Logo
9:20 am - 4:33 pm
SYD
-
STL
22h 13m
2 stops
Air Canada Logo
4:48 pm - 7:20 am
STL
-
SYD
23h 32m
2 stops
$1,093Air Canada
Sun, Jun 7 - Sun, Jun 14
Air Canada Logo
9:20 am - 8:25 pm
SYD
-
STL
50h 05m
2 stops
Air Canada Logo
1:05 pm - 7:20 am
STL
-
SYD
51h 15m
2 stops
$1,101Air Canada
Fri, May 8 - Tue, May 12
Air Canada Logo
9:20 am - 2:28 pm
SYD
-
STL
44h 08m
2 stops
Air Canada Logo
7:05 am - 7:20 am
STL
-
SYD
33h 15m
2 stops
$1,108Air 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
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, Jun 1 - Mon, Jun 8
American Airlines Logo
1:35 pm - 7:36 pm
MEL
-
STL
21h 01m
1 stop
American Airlines Logo
2:58 pm - 5:00 am
STL
-
MEL
23h 02m
1 stop
$1,676American Airlines
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
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
$2,512United 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 $1,065 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$620
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 $1,065 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 1,778 direct flights from within Australia to St. Louis. The most common day for departures is Sunday, with 17% 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 9637 reviews
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

My food prefer was confirmed by email 2x and still the crew claim they had no pre-order. I taken ill while in India so I needed to avoid Indian sauces and spices, so the problem with the preorder was unacceptable. Additionally, is there a new rule to automatically not to disturb passengers? I would like this as an option. Lastly, for breakfast I needed to avoid Indian and I’m allergic to eggs.. therefore the only option was pancakes and guess what was not available!!!

4.0 OkayLisa, Apr 2026
DEL - EWR
Read more United Airlines reviews

My food prefer was confirmed by email 2x and still the crew claim they had no pre-order. I taken ill while in India so I needed to avoid Indian sauces and spices, so the problem with the preorder was unacceptable. Additionally, is there a new rule to automatically not to disturb passengers? I would like this as an option. Lastly, for breakfast I needed to avoid Indian and I’m allergic to eggs.. therefore the only option was pancakes and guess what was not available!!!

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

It was a really seamless flight and the entertainment selection was excellent.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

It was terrible. sat on airplane 2 hours then flight was canceled. made to pick up bags and go through Panama immagration to rebook another flight. worst experice ever at a airport.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

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)