$609 Find Cheap Flights from Australia to St. Louis - Compare and Save

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 11/2. 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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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, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
6:05 am - 9:40 amSYD  Sydney Kingsford Smith-STL Lambert-St Louis
43h 35m3 stops Nadi Los Angeles Atlanta Hartsfield-Jackson
Multiple Airlines Logo
10:35 am - 12:50 pmSTL  Lambert-St Louis-SYD Sydney Kingsford Smith
34h 15m3 stops Atlanta Hartsfield-Jackson Los Angeles Nadi
$944Multiple Airlines
Wed, Sep 2 - Wed, Sep 23
Multiple Airlines Logo
6:05 am - 4:11 pmSYD  Sydney Kingsford Smith-STL Lambert-St Louis
49h 06m3 stops Nadi Los Angeles Orlando
Multiple Airlines Logo
12:17 pm - 11:50 amSTL  Lambert-St Louis-SYD Sydney Kingsford Smith
32h 33m3 stops Las Vegas Harry Reid Intl Los Angeles Nadi
$975Multiple Airlines
Wed, Sep 9 - Tue, Sep 15
Delta Logo
10:00 am - 7:58 pmMEL  Melbourne-STL Lambert-St Louis
24h 58m2 stops Los Angeles Atlanta Hartsfield-Jackson
Delta Logo
5:59 pm - 7:50 amSTL  Lambert-St Louis-MEL Melbourne
46h 51m2 stops Detroit Metropolitan Wayne County Los Angeles
$1,033Delta
Thu, Jan 21 - Wed, Feb 3
Delta Logo
10:10 am - 9:41 pmMEL  Melbourne-STL Lambert-St Louis
28h 31m2 stops Los Angeles Salt Lake City
Delta Logo
10:45 am - 8:00 amSTL  Lambert-St Louis-MEL Melbourne
28h 15m2 stops Detroit Metropolitan Wayne County Los Angeles
$1,132Delta
Tue, Jan 26 - Sat, Jan 30
American Airlines Logo
11:20 am - 11:59 pmSYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 39m1 stop Los Angeles
American Airlines Logo
2:54 pm - 6:00 pmSTL  Lambert-St Louis-SYD Sydney Kingsford Smith
34h 06m2 stops Dallas/Fort Worth Brisbane
$1,138American Airlines
Wed, Oct 7 - Wed, Oct 21
American Airlines Logo
10:10 am - 11:46 pmSYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 36m1 stop Los Angeles
American Airlines Logo
3:20 pm - 8:05 amSTL  Lambert-St Louis-SYD Sydney Kingsford Smith
24h 45m2 stops Dallas/Fort Worth Los Angeles
$1,181American Airlines
Wed, Oct 7 - Wed, Oct 21
American Airlines Logo
10:10 am - 6:20 pmSYD  Sydney Kingsford Smith-STL Lambert-St Louis
24h 10m2 stops Los Angeles Dallas/Fort Worth
American Airlines Logo
3:20 pm - 8:05 amSTL  Lambert-St Louis-SYD Sydney Kingsford Smith
24h 45m2 stops Dallas/Fort Worth Los Angeles
$1,181American Airlines
Wed, Oct 7 - Wed, Oct 21
American Airlines Logo
10:10 am - 11:46 pmSYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 36m1 stop Los Angeles
American Airlines Logo
6:04 am - 8:05 amSTL  Lambert-St Louis-SYD Sydney Kingsford Smith
34h 01m1 stop Los Angeles
$1,181American Airlines
Mon, Sep 7 - Sun, Sep 27
United Airlines Logo
10:55 am - 6:39 pmMEL  Melbourne-STL Lambert-St Louis
22h 44m1 stop San Francisco
United Airlines Logo
7:08 am - 8:15 amSTL  Lambert-St Louis-MEL Melbourne
34h 07m1 stop San Francisco
$1,280United Airlines
Mon, Sep 7 - Sun, Sep 27
United Airlines Logo
10:55 am - 12:40 pmMEL  Melbourne-STL Lambert-St Louis
40h 45m2 stops San Francisco Denver Intl
United Airlines Logo
3:12 pm - 8:15 amSTL  Lambert-St Louis-MEL Melbourne
26h 03m2 stops Houston George Bush Intcntl San Francisco
$1,280United 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.

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular routes to St. Louis on KAYAK are from Sydney, which takes 20h 56m, and Melbourne, which takes 25h 03m.

How many direct flights to St. Louis are there each day?

There are around 408 direct flights from within Australia to St. Louis every day. Most flights depart in the afternoon, with 35% of flights departing in the afternoon.

Find deals

Good to know

Low season

March

Cheapest flight

$609
Best time to beat the crowds but there is an average 16% increase 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 2,853 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 10111 reviews
8.1Crew
7.7Boarding
6.7Food
7.3Comfort
7.1Entertainment
Airline reviews

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

8.0 ExcellentTodd, Jul 2026
Read more United Airlines reviews

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Uncomfortable plastic seats even in premium economy. No free wifi. Even paid wifi was spotty to nonexistent. Bad food. Much worse than economy on foreign carriers like Qantas.

Airport terminal was outdated, flight was on a small jet with no wifi

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We boarded and buckled and then deplaned due to no pilot. Had to wait over 3 hours for a new pilot. Not weather related, just poor management.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

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)