$617 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 6/26. 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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Everything you should know

Cheapest round-trip
$888
Overall average: $1,171
Delta
Fri 3/27Sun 4/5
MEL - STL • 2 stops
Cheapest one-way
$617
United Airlines
Fri 6/26
MEL - STL • 2 stops
When to travel
August
Cheapest • 15% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

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, Mar 27 - Sun, Apr 5
Delta Logo
9:10 am - 8:42 pm
MEL
-
STL
27h 32m
2 stops
Delta Logo
2:12 pm - 7:50 am
STL
-
MEL
50h 38m
2 stops
$888Delta
Thu, May 14 - Thu, Jun 4
Air Canada Logo
9:20 am - 8:04 pm
SYD
-
STL
49h 44m
2 stops
Air Canada Logo
7:30 am - 7:20 am
STL
-
SYD
32h 50m
2 stops
$891Air Canada
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
11:30 am - 8:26 pm
MEL
-
STL
25h 56m
2 stops
United Airlines Logo
9:00 am - 9:00 am
STL
-
MEL
32h 00m
2 stops
$915United Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
10:30 am - 6:00 pm
MEL
-
STL
23h 30m
2 stops
Multiple Airlines Logo
11:25 am - 9:00 am
STL
-
MEL
29h 35m
2 stops
$930Multiple Airlines
Sat, Mar 28 - Sun, Apr 5
American Airlines Logo
12:00 pm - 11:58 pm
MEL
-
STL
27h 58m
1 stop
American Airlines Logo
2:19 pm - 6:45 am
STL
-
MEL
25h 26m
2 stops
$941American Airlines
Wed, Mar 18 - Wed, Mar 25
American Airlines Logo
4:05 pm - 10:58 pm
MEL
-
STL
22h 53m
1 stop
American Airlines Logo
7:00 am - 5:00 am
STL
-
MEL
30h 00m
1 stop
$945American Airlines
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
6:20 am - 3:28 pm
SYD
-
STL
25h 08m
2 stops
Multiple Airlines Logo
4:13 pm - 9:00 am
STL
-
SYD
24h 47m
2 stops
$1,040Multiple Airlines
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
11:50 am - 3:38 pm
SYD
-
STL
20h 48m
1 stop
United Airlines Logo
5:25 pm - 9:15 am
STL
-
SYD
22h 50m
1 stop
$1,060United Airlines
Thu, Feb 19 - Mon, Feb 23
Qantas Airways Logo
8:50 am - 11:59 pm
LST
-
STL
32h 09m
2 stops
Qantas Airways Logo
6:38 am - 4:35 pm
STL
-
LST
40h 57m
2 stops
$1,408Qantas Airways
Thu, Feb 19 - Mon, Feb 23
Qantas Airways Logo
6:30 am - 11:59 pm
LST
-
STL
34h 29m
2 stops
Qantas Airways Logo
6:38 am - 4:35 pm
STL
-
LST
40h 57m
2 stops
$1,411Qantas 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 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 February, where tickets cost $900 on average for one-way flights. On the other hand, the most expensive months are July and September, where the average cost of tickets from Australia is $1,937 and $1,527 respectively. For return trips, the best month to travel is August with an average price of $1,128.

Good to know

Low seasonAugust
Cheapest flight$617
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Melbourne to St. Louis

FAQs - booking St. Louis flights

  • 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 2,069 direct flights from within Australia to St. Louis. The most common day for departures is Sunday, with 19% 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 airlines 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.
7.5
Qantas AirwaysOverall score based on 986 reviews
7.7Boarding
8.2Crew
7.0Food
7.5Comfort
7.2Entertainment
Airline reviews

Flight arrived late with no one to help over 30 people rebook. I slept at the airport.

2.0 MediocreKelsey, Feb 2026
MIA - LAX
Read more Qantas Airways reviews

Flight arrived late with no one to help over 30 people rebook. I slept at the airport.

Business seats not as comfortable or private as most competitors (e.g. Qantas was outstanding), and movie selection was much more limited than Qantas or United has been recently

Hard to move and get out of my seat when the passenger in front is in recline position.

It was a good flight and no complaints. It just wasn't anything that was better than any other flight.

The crew were wonderful - if only the customers were as well behaved as the attendants!! Ha ha! If you could just talk to God and ask for less turbulence next time.... Juuuuust kidding....

Flight was canceled. I was not alerted. It was only kayak that alerted me

Flight was 2.5 hours late leaving. We spent 50 minutes of that sitting on the plane with no explanation. They did reduce the time in the air so we arrived a little less late which was something. The cheese and crackers were okay but the wine was terrible.

Excellent as always, I won't fly to Australia, and back to the US on any other airline. The flight crew is always top notch, and have a way to make one feel extra special. Thank you for your service, I would rate Qantas Airways a 10+.

Basic airline, aircraft and service. AA gets you from point A to B. My flight was delayed by 2 hours too.

No internet on flight, which makes log travels really hard.

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

The attendant on board was amazing. She should be doing business/first international long haul.

The boarding was cumbersome. The staff was not aligned. They called group 1 but then the agent said no. Then they called group 1 again but still would not board us. Then they called group 2 and they all came up and still hadn’t started boarding. Then someone came from the plane and said why is no one coming? And the agent said bc i thought not yet and she said I said over the walkie talkie to send the passengers down? What was not clear about that? Also, onboard, the crew gave announcements very ironic/authoritative, and in first class they gave us a cheesebox. My expectations based on competition airlines, is a warm meal. A little underwhelming.

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

This Japanese airline provides great service and very helpful in assisting their passengers.

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