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Cheap flights from Australia to St. Louis from $1,147

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Australia to St. Louis departing on 15/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Australia to St. Louis

Recent return flight deals from Australia to St. Louis

Enter your travel dates to find the best prices.
American Airlines Logo
13:35 - 19:30
MEL
-
STL
20h 55m
1 stop
American Airlines Logo
08:55 - 06:45
STL
-
MEL
30h 50m
2 stops
$1,615American Airlines
Mon, 11 May - Tue, 19 May
United Airlines Logo
10:55 - 18:22
MEL
-
STL
22h 27m
1 stop
United Airlines Logo
19:23 - 08:15
STL
-
MEL
21h 52m
1 stop
$1,631United Airlines
Fri, 15 May - Fri, 22 May
Qantas Airways Logo
09:45 - 23:59
MEL
-
STL
29h 14m
1 stop
Qantas Airways Logo
06:21 - 06:45
STL
-
MEL
33h 24m
1 stop
$1,661Qantas Airways
Mon, 11 May - Tue, 19 May
Air Canada Logo
09:20 - 12:06
SYD
-
STL
41h 46m
2 stops
Air Canada Logo
13:05 - 07:20
STL
-
SYD
27h 15m
2 stops
$1,727Air Canada
Wed, 20 May - Thu, 28 May
Air Canada Logo
10:00 - 20:25
BNE
-
STL
49h 25m
2 stops
Air Canada Logo
13:05 - 07:05
STL
-
BNE
51h 00m
2 stops
$1,731Air Canada
Wed, 6 May - Sun, 10 May
Air Canada Logo
09:20 - 16:57
SYD
-
STL
22h 37m
2 stops
Air Canada Logo
16:48 - 07:20
STL
-
SYD
23h 32m
2 stops
$1,757Air Canada
Wed, 20 May - Thu, 28 May
American Airlines Logo
09:45 - 08:05
MEL
-
STL
37h 20m
2 stops
American Airlines Logo
15:33 - 10:35
STL
-
MEL
28h 02m
2 stops
$1,822American Airlines
Mon, 7 Sep - Sun, 27 Sep
Delta Logo
10:00 - 21:09
MEL
-
STL
26h 09m
2 stops
Delta Logo
14:27 - 07:50
STL
-
MEL
26h 23m
2 stops
$2,019Delta
Fri, 15 May - Wed, 20 May
Qantas Airways Logo
13:35 - 18:14
MEL
-
STL
19h 39m
1 stop
Qantas Airways Logo
06:30 - 06:45
STL
-
MEL
33h 15m
1 stop
$2,115Qantas Airways
Mon, 7 Sep - Sun, 27 Sep
United Airlines Logo
10:30 - 16:57
BNE
-
STL
21h 27m
2 stops
United Airlines Logo
19:06 - 06:30
STL
-
BNE
20h 24m
1 stop
$3,100United Airlines
Wed, 6 May - Sun, 10 May

American Airlines flights from Australia to St. Louis

Our best American Airlines deals on Australia to St. Louis flight tickets
American Airlines
11 May
MEL09:45Melbourne
24h 45m
2 stops
STL19:30Lambert-St Louis
20 May
STL05:51Lambert-St Louis
33h 54m
2 stops
MEL06:45Melbourne
$1,615
American Airlines
7 Sept
MEL09:45Melbourne
37h 20m
2 stops
STL08:05Lambert-St Louis
27 Sept
STL15:33Lambert-St Louis
28h 02m
2 stops
MEL10:35Melbourne
$1,822
American Airlines
7 Sept
MEL09:45Melbourne
37h 20m
2 stops
STL08:05Lambert-St Louis
27 Sept
STL15:33Lambert-St Louis
28h 02m
2 stops
MEL10:35Melbourne
$1,827

Qantas Airways flights from Australia to St. Louis

Our best Qantas Airways deals on Australia to St. Louis flight tickets
Qantas Airways
11 May
MEL09:45Melbourne
29h 14m
1 stop
STL23:59Lambert-St Louis
19 May
STL06:21Lambert-St Louis
33h 24m
1 stop
MEL06:45Melbourne
$1,661
Qantas Airways
7 Sept
MEL13:35Melbourne
19h 39m
1 stop
STL18:14Lambert-St Louis
27 Sept
STL06:30Lambert-St Louis
33h 15m
1 stop
MEL06:45Melbourne
$2,115
Qantas Airways
17 May
SYD12:00Sydney Kingsford Smith
20h 21m
1 stop
STL17:21Lambert-St Louis
24 May
STL19:20Lambert-St Louis
50h 10m
2 stops
SYD12:30Sydney Kingsford Smith
$2,140

momondo Fare Finder

 
Customise your flight search to find flights from Australia to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 4 April 2026.
Use the filters below to find and compare flights from Australia to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 11/5

13:35-19:30

1 stop20h 55m

Lambert-St Louis

Tue 19/5

08:55-06:45

2 stops30h 50m

$1,615

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 15/5

10:55-18:22

1 stop22h 27m

Lambert-St Louis

Fri 22/5

19:23-08:15

1 stop21h 52m

$1,631

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 11/5

09:45-23:59

1 stop29h 14m

Lambert-St Louis

Tue 19/5

06:21-06:45

1 stop33h 24m

$1,661

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Thu 28/5

13:05-07:20

2 stops27h 15m

$1,727

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 6/5

10:00-20:25

2 stops49h 25m

Lambert-St Louis

Sun 10/5

13:05-07:05

2 stops51h 00m

$1,731

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:20-16:57

2 stops22h 37m

Lambert-St Louis

Thu 28/5

16:48-07:20

2 stops23h 32m

$1,757

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 7/9

09:45-08:05

2 stops37h 20m

Lambert-St Louis

Sun 27/9

15:33-10:35

2 stops28h 02m

$1,822

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 15/5

10:00-21:09

2 stops26h 09m

Lambert-St Louis

Wed 20/5

14:27-07:50

2 stops26h 23m

$2,019

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 7/9

13:35-18:14

1 stop19h 39m

Lambert-St Louis

Sun 27/9

06:30-06:45

1 stop33h 15m

$2,115
Fastest return journey

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 6/5

10:30-16:57

2 stops21h 27m

Lambert-St Louis

Sun 10/5

19:06-06:30

1 stop20h 24m

$3,100

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to St. Louis from

How to get the cheapest flight ticket from Australia to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

The month of May is, on average, the cheapest month to fly to St. Louis from Australia, with most prices found around $1,614. If you aren’t able to travel to St. Louis during the month of May, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,670.

Can stopping save me money on Australia to St. Louis flights?

You could potentially save up to 11% on your flight if you consider stops on a Australia to St. Louis flight.

Cheap Australia to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Australia to St. Louis

Fastest flight time

22h 27m

Direct flights

None
The fastest flight from Australia to St. Louis takes 22h 27m
There are no direct flights from Australia to St. Louis. There are no popular flight routes from Australia to St. Louis.
Search flight deals

Frequently asked questions about flying from Australia to St. Louis

  • When did momondo last update prices for flights from Australia to Lambert-St Louis Airport?

    Prices for flights from Australia to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Australia to Lambert-St Louis Airport?

  • How old do you have to be to fly from Australia to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Australia to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Australia to St. Louis

Compare and see reviews for airlines that fly from Australia to St. Louis with momondo
Airline
Rating
Free cancellation
Price
United AirlinesPriceFrom $772Free cancellationRating
7.4
9,542 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $1,128Free cancellationRating
7.5
1,016 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,669Free cancellationRating
7.1
11,554 reviews
Search American Airlines flights

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles

Why use momondo?

Why should I use momondo to find a flight deal from Australia to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Australia to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Australia to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Australia to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Australia to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Australia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Australia to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Australia and alert you when they change.

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