$1,025 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 5/22. 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
$1,025Multiple 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
$1,027Multiple 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
$1,028Multiple Airlines
Mon, May 25 - Wed, Aug 5
Air Canada Logo
9:20 am - 12:06 pm
SYD
-
STL
41h 46m
2 stops
Air Canada Logo
12:10 pm - 7:20 am
STL
-
SYD
52h 10m
2 stops
$1,069Air Canada
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
$1,070Air Canada
Fri, May 22 - Fri, May 29
American Airlines Logo
9:45 am - 7:00 pm
MEL
-
STL
24h 15m
2 stops
American Airlines Logo
7:20 pm - 5:00 am
STL
-
MEL
42h 40m
1 stop
$1,112American Airlines
Thu, May 14 - Sat, May 23
American Airlines Logo
9:45 am - 11:59 pm
MEL
-
STL
29h 14m
1 stop
American Airlines Logo
6:35 am - 6:45 am
STL
-
MEL
33h 10m
1 stop
$1,113American Airlines
Thu, May 14 - Tue, May 26
United Airlines Logo
10:55 am - 8:43 pm
MEL
-
STL
24h 48m
2 stops
United Airlines Logo
1:38 pm - 8:15 am
STL
-
MEL
27h 37m
2 stops
$1,124United Airlines
Wed, May 13 - Mon, May 25
United Airlines Logo
10:55 am - 10:30 pm
MEL
-
STL
26h 35m
2 stops
United Airlines Logo
7:23 pm - 8:15 am
STL
-
MEL
21h 52m
1 stop
$1,128United Airlines
Fri, May 22 - Fri, May 29
Delta Logo
10:00 am - 9:38 pm
MEL
-
STL
26h 38m
2 stops
Delta Logo
8:53 am - 7:50 am
STL
-
MEL
31h 57m
2 stops
$1,131Delta
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 $1,025 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$696
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 $1,025 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 2,970 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 9680 reviews
7.1Entertainment
8.1Crew
7.3Comfort
6.6Food
7.7Boarding
Airline reviews

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

6.0 GoodAnonymous, Apr 2026
HND - SFO
Read more United Airlines reviews

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Flight crew was super friendly and helpful. Food was frequent and honestly pretty good. Plenty of on-board entertainment. Economy seats are super cramped for such a long flight, but the crew allowed people to get up and stretch, and kids could wander with their parents, so we all made it work. Overall a very good experience.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Outstanding service, great food, friendly & efficient crew, safe & comfortable flight

Staff were not attentive, wifi did not work, cut my head in the bathroom due to the position of the soap on the sink, had blood running down my face, told staff, they had no expression no sympathy, didn't even say "sorry", they said "oh we will have a look at that" about 10 mins later the purser brought me a bandaid, still no sorry.... Shocking

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)