$676 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 8/15. 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

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, Aug 18 - Sat, Nov 8
United Airlines Logo
10:20 am - 4:45 pmSYD-STL
21h 25m1 stop
United Airlines Logo
11:10 am - 7:00 amSTL-SYD
26h 50m1 stop
$1,129United Airlines
Find Deal
Sun, Jun 22 - Sun, Jun 29
Delta Logo
9:25 am - 8:23 amSYD-STL
37h 58m2 stops
Delta Logo
6:30 am - 6:35 amSTL-SYD
33h 05m2 stops
$1,146Delta
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Sun, Jul 27 - Sun, Aug 3
Air New Zealand Logo
8:35 am - 10:15 pmMEL-STL
28h 40m2 stops
Air New Zealand Logo
6:15 pm - 5:45 pmSTL-MEL
32h 30m2 stops
$1,153Air New Zealand
Find Deal
Tue, Aug 12 - Tue, Aug 19
Air New Zealand Logo
8:35 am - 9:28 amMEL-STL
39h 53m2 stops
Air New Zealand Logo
5:49 pm - 10:50 amSTL-MEL
26h 01m2 stops
$1,164Air New Zealand
Find Deal
Fri, Jul 18 - Thu, Jul 31
Qantas Airways Logo
5:45 pm - 11:30 pmSYD-STL
20h 45m1 stop
Qantas Airways Logo
6:14 am - 7:05 amSTL-SYD
33h 51m1 stop
$1,279Qantas Airways
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Sat, Jul 26 - Sat, Aug 2
 Logo
1:45 pm - 9:52 amSYD-STL
35h 07m3 stops
 Logo
7:38 pm - 11:45 amSTL-SYD
25h 07m2 stops
$1,282
Find Deal
Sat, Aug 9 - Fri, Aug 22
American Airlines Logo
9:45 am - 11:09 pmMEL-STL
28h 24m1 stop
American Airlines Logo
12:20 pm - 5:00 amSTL-MEL
25h 40m1 stop
$1,283American Airlines
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Sat, Aug 9 - Fri, Aug 22
American Airlines Logo
9:45 am - 11:09 pmMEL-STL
28h 24m1 stop
American Airlines Logo
10:08 am - 5:00 amSTL-MEL
27h 52m1 stop
$1,287American Airlines
Find Deal
Sat, Jul 26 - Sat, Aug 2
 Logo
1:45 pm - 9:52 amSYD-STL
35h 07m3 stops
 Logo
7:38 pm - 6:55 amSTL-SYD
20h 17m1 stop
$1,367
Find Deal
Sat, Jul 26 - Sat, Aug 2
Qantas Airways Logo
5:45 pm - 11:30 pmSYD-STL
20h 45m1 stop
Qantas Airways Logo
7:38 pm - 6:55 amSTL-SYD
20h 17m1 stop
$1,594Qantas Airways
Find Deal
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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 November, where tickets cost $1,065 on average for return flights. On the other hand, the most expensive months are August and December, where the average cost of tickets from Australia is $2,073 and $1,619 respectively. For one-way flights, the best month to travel is February with an average price of $946.


Good to know

Low seasonFebruary
High seasonDecember
Cheapest flight$676
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 33% 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.

  • What is the cheapest day to fly to St. Louis?

    Based on KAYAK data, the cheapest day to fly to St. Louis is Friday where round-trip tickets can be as cheap as $1,050. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,861 on average.

  • 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.

  • What is the cheapest time of day to fly to St. Louis?

    The cheapest time of day to fly to St. Louis is generally in the morning, when round-trip flights cost $1,352 on average. The most expensive time of day to fly to St. Louis is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,824.

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

    Each week there are around 1,609 direct flights from within Australia to St. Louis. The most common day for departures is Friday, 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.

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 854 reviews
7.7Boarding
7.4Comfort
7.1Entertainment
6.9Food
8.2Crew
Airline reviews

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

10.0 ExcellentPeter, Jun 2025MEL - HKG
Read more Qantas Airways reviews

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

Was bumped to a later flight because of inefficiency on part of the airline.

Inflight entertainment, poor that there are no headrest screens on aircraft used for an international flight.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

Touch screens were very difficult to use, generally being laggy and unresponsive- it was quite an art to get it to play the thing you wanted rather than some thing at random. Selection of films and Tv was good when touchscreen decided to finally respond.

Their aircraft are old and amenities lack way behind other international carriers leaving from BNE. Even in economy

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

Overall good experience with flight and airport wheelchair staff. Also got Indian food in the flights

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

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