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Cheap flights from Australia to St. Louis from $858

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 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
19:40 - 23:09BNE-STL
18h 29m1 stop
American Airlines Logo
12:58 - 05:00STL-BNE
25h 02m2 stops
$1,308American Airlines
Find Deal
Wed, 11 Mar - Sun, 15 Mar
Delta Logo
10:10 - 18:04MEL-STL
24h 54m2 stops
Delta Logo
18:59 - 07:00STL-MEL
44h 01m2 stops
$1,710Delta
Find Deal
Fri, 6 Mar - Tue, 10 Mar
Air Canada Logo
11:20 - 16:28SYD-STL
22h 08m2 stops
Air Canada Logo
09:00 - 09:35STL-SYD
31h 35m2 stops
$1,756Air Canada
Find Deal
Sat, 6 Dec - Sat, 13 Dec
Air Canada Logo
10:25 - 15:29SYD-STL
45h 04m2 stops
Air Canada Logo
16:05 - 08:35STL-SYD
48h 30m2 stops
$1,771Air Canada
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Qantas Airways Logo
06:30 - 12:32DPO-STL
47h 02m2 stops
Qantas Airways Logo
13:20 - 16:35STL-DPO
34h 15m2 stops
$2,074Qantas Airways
Find Deal
Sun, 7 Dec - Sun, 14 Dec
Cathay Pacific Logo
00:30 - 22:24BNE-STL
36h 54m2 stops
Cathay Pacific Logo
06:15 - 23:00STL-BNE
49h 45m2 stops
$2,192Cathay Pacific
Find Deal
Tue, 10 Mar - Sun, 15 Mar
Qantas Airways Logo
13:30 - 23:57MEL-STL
27h 27m2 stops
Qantas Airways Logo
13:20 - 05:00STL-MEL
22h 40m1 stop
$2,248Qantas Airways
Find Deal
Sat, 6 Dec - Sat, 13 Dec
United Airlines Logo
11:50 - 15:54SYD-STL
20h 04m1 stop
United Airlines Logo
15:00 - 09:05STL-SYD
26h 05m2 stops
$2,520United Airlines
Find Deal
Thu, 12 Mar - Mon, 16 Mar
United Airlines Logo
12:10 - 22:13SYD-STL
26h 03m3 stops
United Airlines Logo
17:54 - 09:05STL-SYD
23h 11m2 stops
$2,524United Airlines
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Cathay Pacific Logo
00:45 - 17:56MEL-STL
34h 11m2 stops
Cathay Pacific Logo
17:59 - 07:10STL-MEL
45h 11m2 stops
$2,775Cathay Pacific
Find Deal
Thu, 5 Mar - Tue, 10 Mar

Cathay Pacific flights from Australia to St. Louis

Our best Cathay Pacific deals on Australia to St. Louis flight tickets
Cathay Pacific
10 Mar
BNE00:30Brisbane
36h 54m
2 stops
STL22:24Lambert-St Louis
15 Mar
STL06:15Lambert-St Louis
49h 45m
2 stops
BNE23:00Brisbane
$2,192
Find similar
Cathay Pacific
5 Mar
MEL00:45Melbourne
34h 11m
2 stops
STL17:56Lambert-St Louis
10 Mar
STL17:59Lambert-St Louis
45h 11m
2 stops
MEL07:10Melbourne
$2,775
Find similar
Cathay Pacific
5 Mar
MEL00:45Melbourne
34h 11m
2 stops
STL17:56Lambert-St Louis
10 Mar
STL17:59Lambert-St Louis
45h 11m
2 stops
MEL07:10Melbourne
$2,776
Find similar

Delta flights from Australia to St. Louis

Our best Delta deals on Australia to St. Louis flight tickets
Delta
6 Mar
MEL10:10Melbourne
24h 54m
2 stops
STL18:04Lambert-St Louis
10 Mar
STL18:59Lambert-St Louis
44h 01m
2 stops
MEL07:00Melbourne
$1,710
Find similar
Delta
6 Mar
MEL10:10Melbourne
27h 29m
2 stops
STL20:39Lambert-St Louis
10 Mar
STL18:59Lambert-St Louis
44h 01m
2 stops
MEL07:00Melbourne
$1,713
Find similar
Delta
11 Mar
BNE10:05Brisbane
22h 59m
2 stops
STL18:04Lambert-St Louis
15 Mar
STL18:59Lambert-St Louis
45h 21m
2 stops
BNE07:20Brisbane
$1,872
Find similar

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 23 October 2025.
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

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 11/3

19:40-23:09

1 stop18h 29m

Lambert-St Louis

Sun 15/3

12:58-05:00

2 stops25h 02m

$1,308

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Fri 6/3

10:10-18:04

2 stops24h 54m

Lambert-St Louis

Tue 10/3

18:59-07:00

2 stops44h 01m

$1,710

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 6/12

11:20-16:28

2 stops22h 08m

Lambert-St Louis

Sat 13/12

09:00-09:35

2 stops31h 35m

$1,756

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

10:25-15:29

2 stops45h 04m

Lambert-St Louis

Mon 16/3

16:05-08:35

2 stops48h 30m

$1,771

DevonportSt. Louis

DPO - STL

DPOSTL

Devonport

Sun 7/12

06:30-12:32

2 stops47h 02m

Lambert-St Louis

Sun 14/12

13:20-16:35

2 stops34h 15m

$2,074

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Tue 10/3

00:30-22:24

2 stops36h 54m

Lambert-St Louis

Sun 15/3

06:15-23:00

2 stops49h 45m

$2,192

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sat 6/12

13:30-23:57

2 stops27h 27m

Lambert-St Louis

Sat 13/12

13:20-05:00

1 stop22h 40m

$2,248

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

11:50-15:54

1 stop20h 04m

Lambert-St Louis

Mon 16/3

15:00-09:05

2 stops26h 05m

$2,520

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

12:10-22:13

3 stops26h 03m

Lambert-St Louis

Mon 16/3

17:54-09:05

2 stops23h 11m

$2,524

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 5/3

00:45-17:56

2 stops34h 11m

Lambert-St Louis

Tue 10/3

17:59-07:10

2 stops45h 11m

$2,775

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 November is, on average, the cheapest month to fly to St. Louis from Australia, with most prices found around $1,585. If you aren’t able to travel to St. Louis during the month of November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,734.

What is the cheapest day to depart on your flight to St. Louis?

According to our data, Saturday is the cheapest day to fly to St. Louis from Australia. The lowest ticket price found for a Saturday departure recently was $2,147. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Australia to St. Louis on a Thursday will generally be more expensive and average around $2,751. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Australia in the morning is the least expensive time of day to depart. momondo users have found prices as low as $2,199 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $3,193 per ticket.

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

You could potentially save up to 17% 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

Direct flights

None
There are no direct flights from Australia to St. Louis. There are no popular flight routes from Australia to St. Louis.
Search flight deals

  • 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
Air CanadaPriceFrom $1,166Free cancellationRating
7.1
10,347 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,258Free cancellationRating
7.4
8,992 reviews
Search United Airlines flights
Air New ZealandPriceFrom $1,501Free cancellationRating
8.0
517 reviews
Search Air New Zealand flights
Qantas AirwaysPriceFrom $1,522Free cancellationRating
7.5
922 reviews
Search Qantas Airways flights

Travelling to a place near St. Louis?

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