$728 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 6/8. 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

Mon, Apr 20 - Mon, Apr 27
American Airlines Logo
9:45 am - 11:57 pm
MEL
-
STL
29h 12m
1 stop
American Airlines Logo
2:37 pm - 6:45 am
STL
-
MEL
25h 08m
2 stops
$900American Airlines
Mon, Apr 20 - Mon, Apr 27
American Airlines Logo
2:05 pm - 11:57 pm
MEL
-
STL
24h 52m
2 stops
American Airlines Logo
2:37 pm - 6:45 am
STL
-
MEL
25h 08m
2 stops
$929American Airlines
Wed, Mar 25 - Sun, Mar 29
United Airlines Logo
10:30 am - 4:49 pm
MEL
-
STL
22h 19m
2 stops
United Airlines Logo
6:05 pm - 8:30 am
STL
-
MEL
46h 25m
2 stops
$945United Airlines
Wed, Aug 5 - Sat, Aug 29
Air New Zealand Logo
11:55 am - 10:07 am
SYD
-
STL
37h 12m
2 stops
Air New Zealand Logo
3:02 pm - 8:45 am
STL
-
SYD
26h 43m
2 stops
$1,117Air New Zealand
Wed, Aug 5 - Sat, Aug 29
Air New Zealand Logo
11:55 am - 10:07 am
SYD
-
STL
37h 12m
2 stops
Air New Zealand Logo
3:02 pm - 8:45 am
STL
-
SYD
26h 43m
2 stops
$1,118Air New Zealand
Thu, Apr 23 - Thu, Apr 30
Qantas Airways Logo
9:45 am - 11:57 pm
MEL
-
STL
29h 12m
1 stop
Qantas Airways Logo
6:21 am - 6:45 am
STL
-
MEL
33h 24m
1 stop
$1,119Qantas Airways
Wed, May 27 - Sun, May 31
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
$1,128United Airlines
Tue, Apr 21 - Tue, Apr 28
Air Canada Logo
9:20 am - 8:54 pm
SYD
-
STL
26h 34m
2 stops
Air Canada Logo
4:30 pm - 7:20 am
STL
-
SYD
23h 50m
2 stops
$1,170Air Canada
Sun, May 3 - Sun, May 17
Air Canada Logo
9:20 am - 12:06 pm
SYD
-
STL
41h 46m
2 stops
Air Canada Logo
7:05 am - 7:20 am
STL
-
SYD
57h 15m
2 stops
$1,248Air Canada
Fri, Aug 7 - Tue, Aug 11
Qantas Airways Logo
6:30 am - 11:08 pm
DPO
-
STL
31h 38m
2 stops
Qantas Airways Logo
7:46 pm - 1:10 pm
STL
-
DPO
50h 24m
2 stops
$1,407Qantas Airways
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 Sydney, at $900 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $278 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 May, where tickets cost $1,108 on average for return flights. On the other hand, the most expensive months are July and December, where the average cost of tickets from Australia is $1,740 and $1,506 respectively. For one-way flights, the best month to travel is January with an average price of $837.

Good to know

Low seasonApril
Cheapest flight$728
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 11% 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 3 days, the cheapest flight deal to St. Louis was found on the route from Sydney, at $900 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $278 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 2,154 direct flights from within Australia to St. Louis. The most common day for departures is Thursday, 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 9409 reviews
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
7.1Entertainment
Airline reviews

I paid $7,000 to fly round trip to Porto. I thought it was for business class. But on the leg from Miami to Newark, and again from Newark to Miami, i was in coach. One time in the middle seat of coach. From Newark to Porto I was in business class as expected, and it was fine. I fly to Portugal once per month, often paying $5,000 for business class. Usually i fly American Airlines. I'd be happy to fly more with United Airlines. But my experience was disappointing because i was put in the coach for almost half the flights.

2.0 MediocreJeff, Mar 2026
OPO - EWR
Read more United Airlines reviews

I paid $7,000 to fly round trip to Porto. I thought it was for business class. But on the leg from Miami to Newark, and again from Newark to Miami, i was in coach. One time in the middle seat of coach. From Newark to Porto I was in business class as expected, and it was fine. I fly to Portugal once per month, often paying $5,000 for business class. Usually i fly American Airlines. I'd be happy to fly more with United Airlines. But my experience was disappointing because i was put in the coach for almost half the flights.

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

It’s always a great time flying with united airlines.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

It was amazing. I had several upgraded seats on my flight out. Everything went smooth with no delays.

They never clean the toilet, and the food is worse

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

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