$886 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 1/9. 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$1,476
Brisbane
Brisbane2 stops$1,578
Canberra
Canberra2 stops$2,323
Sydney
Sydney2 stops$1,476
Brisbane
Brisbane2 stops$1,578
Canberra
Canberra2 stops$2,323

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

Sun, 15 Nov - Wed, 25 Nov
Qantas Airways Logo
18:13 - 20:50
STL
-
SYD
33h 37m
2 stops
Qantas Airways Logo
11:15 - 23:42
SYD
-
STL
29h 27m
1 stop
$1,476Qantas Airways
Mon, 16 Nov - Sat, 21 Nov
Qantas Airways Logo
07:00 - 09:00
STL
-
SYD
33h 00m
1 stop
Qantas Airways Logo
17:50 - 12:37
SYD
-
STL
35h 47m
2 stops
$1,477Qantas Airways
Tue, 20 Oct - Tue, 3 Nov
American Airlines Logo
12:43 - 06:45
STL
-
MEL
26h 02m
2 stops
American Airlines Logo
23:15 - 08:58
MEL
-
STL
26h 43m
2 stops
$1,537American Airlines
Sat, 22 Aug - Mon, 31 Aug
American Airlines Logo
06:00 - 06:45
STL
-
MEL
33h 45m
1 stop
American Airlines Logo
09:45 - 22:59
MEL
-
STL
28h 14m
1 stop
$1,543American Airlines
Tue, 20 Oct - Tue, 3 Nov
Delta Logo
19:05 - 08:50
STL
-
MEL
45h 45m
2 stops
Delta Logo
12:00 - 00:36
MEL
-
STL
29h 36m
2 stops
$1,563Delta
Tue, 1 Sep - Wed, 9 Sep
Delta Logo
17:23 - 07:50
STL
-
MEL
47h 27m
2 stops
Delta Logo
10:00 - 20:35
MEL
-
STL
25h 35m
2 stops
$1,581Delta
Sat, 22 Aug - Mon, 31 Aug
United Airlines Logo
15:35 - 08:15
STL
-
MEL
25h 40m
2 stops
United Airlines Logo
10:10 - 15:38
MEL
-
STL
68h 28m
3 stops
$1,605United Airlines
Sun, 16 Aug - Tue, 25 Aug
Air New Zealand Logo
13:36 - 07:00
STL
-
SYD
26h 24m
2 stops
Air New Zealand Logo
10:20 - 17:06
SYD
-
STL
21h 46m
2 stops
$1,890Air New Zealand
Thu, 2 Jul - Sun, 12 Jul
Air New Zealand Logo
19:23 - 06:55
STL
-
SYD
20h 32m
1 stop
Air New Zealand Logo
10:20 - 18:17
SYD
-
STL
22h 57m
1 stop
$1,944Air New Zealand
Sun, 12 Jul - Sun, 19 Jul
United Airlines Logo
19:23 - 13:15
STL
-
CBR
26h 52m
2 stops
United Airlines Logo
07:15 - 18:17
CBR
-
STL
26h 02m
2 stops
$2,323United Airlines
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 $440 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of return tickets is $1,737 and $1,672 respectively.

Find deals

Good to know

Low seasonApril
Cheapest flight$886
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (1% more expensive on average)
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)