$882 Find Cheap Flights from St. Louis to Australia – 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 from St. Louis to Australia departing on 31/8. 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

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Cheap Flights from St. Louis to Australia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney2 stops$1,544
Brisbane
Brisbane2 stops$1,571
Sydney
Sydney2 stops$1,544
Brisbane
Brisbane2 stops$1,571

Book Cheap St. Louis to Australia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from St. Louis to Australia 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 return flight deals from St. Louis to Australia

Fri, 13 Nov - Thu, 26 Nov
Qantas Airways Logo
14:54 - 17:40
STL
-
SYD
33h 46m
2 stops
Qantas Airways Logo
11:20 - 23:45
SYD
-
STL
29h 25m
1 stop
$1,544Qantas Airways
Mon, 9 Nov - Thu, 19 Nov
Qantas Airways Logo
06:02 - 09:00
STL
-
SYD
33h 58m
1 stop
Qantas Airways Logo
17:50 - 18:15
SYD
-
STL
41h 25m
2 stops
$1,558Qantas Airways
Sun, 25 Oct - Wed, 18 Nov
Air Canada Logo
16:05 - 07:45
STL
-
BNE
48h 40m
2 stops
Air Canada Logo
10:45 - 15:26
BNE
-
STL
44h 41m
2 stops
$1,571Air Canada
Sun, 25 Oct - Wed, 18 Nov
Air Canada Logo
13:08 - 07:45
STL
-
BNE
27h 37m
2 stops
Air Canada Logo
10:45 - 15:26
BNE
-
STL
44h 41m
2 stops
$1,580Air Canada
Tue, 20 Oct - Tue, 3 Nov
Qantas Airways Logo
19:10 - 05:00
STL
-
MEL
41h 50m
1 stop
Qantas Airways Logo
12:00 - 17:54
MEL
-
STL
22h 54m
1 stop
$1,587Qantas Airways
Tue, 20 Oct - Tue, 27 Oct
Qantas Airways Logo
19:10 - 05:00
STL
-
MEL
41h 50m
1 stop
Qantas Airways Logo
12:00 - 17:02
MEL
-
STL
21h 02m
1 stop
$1,589Qantas Airways
Tue, 8 Sep - Wed, 30 Sep
Air Canada Logo
12:10 - 07:20
STL
-
SYD
28h 10m
2 stops
Air Canada Logo
09:20 - 18:41
SYD
-
STL
48h 21m
2 stops
$1,590Air Canada
Tue, 27 Oct - Wed, 11 Nov
Qantas Airways Logo
05:40 - 05:00
STL
-
MEL
31h 20m
1 stop
Qantas Airways Logo
22:45 - 23:45
MEL
-
STL
42h 00m
1 stop
$1,591Qantas Airways
Sun, 11 Oct - Mon, 19 Oct
Air Canada Logo
12:10 - 08:20
STL
-
SYD
28h 10m
2 stops
Air Canada Logo
10:20 - 18:41
SYD
-
STL
48h 21m
2 stops
$1,591Air Canada
Tue, 8 Sep - Wed, 30 Sep
Air Canada Logo
13:36 - 07:20
STL
-
SYD
26h 44m
2 stops
Air Canada Logo
09:20 - 12:13
SYD
-
STL
41h 53m
3 stops
$1,594Air Canada
Booking Insights

KAYAK's insights & trends for St. Louis to Australia flights

Get data-powered insights and trends into flights from St. Louis to Australia to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest month to fly from St. Louis to Australia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Australia, 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 from St. Louis to Australia is May, when tickets cost $1,420 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of return tickets is $2,224 and $2,191 respectively.

Find deals

Good to know

Low season

April

Cheapest flight

$882
Best time to beat the crowds but there is an average 5% increase in price.
Flight from St. Louis to Sydney

FAQs - booking Australia flights

  • How does KAYAK find such low prices on flights from St. Louis to Australia?

    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 from St. Louis to Australia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Australia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Australia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Australia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from St. Louis to Australia 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 from St. Louis to Australia?

    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 from St. Louis to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports

St. Louis (STL)