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Cheap flights from Australia to St. Louis from $826

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 26/6. 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

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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.
United Airlines Logo
11:40 - 22:59
BNE
-
STL
27h 19m
2 stops
United Airlines Logo
07:41 - 06:30
STL
-
BNE
31h 49m
2 stops
$1,272United Airlines
Fri, 6 Mar - Thu, 12 Mar
Delta Logo
09:10 - 23:25
MEL
-
STL
30h 15m
2 stops
Delta Logo
12:28 - 07:00
STL
-
MEL
26h 32m
2 stops
$1,275Delta
Wed, 18 Mar - Wed, 25 Mar
Air Canada Logo
09:20 - 14:02
SYD
-
STL
43h 42m
2 stops
Air Canada Logo
08:55 - 07:20
STL
-
SYD
55h 25m
2 stops
$1,448Air Canada
Thu, 6 Aug - Sat, 29 Aug
Air Canada Logo
09:20 - 14:02
SYD
-
STL
43h 42m
2 stops
Air Canada Logo
08:55 - 07:20
STL
-
SYD
55h 25m
2 stops
$1,451Air Canada
Thu, 6 Aug - Sat, 29 Aug
Air Canada Logo
09:20 - 14:02
SYD
-
STL
43h 42m
2 stops
Air Canada Logo
08:55 - 07:20
STL
-
SYD
55h 25m
2 stops
$1,453Air Canada
Thu, 6 Aug - Sat, 29 Aug
American Airlines Logo
11:20 - 23:58
SYD
-
STL
28h 38m
1 stop
American Airlines Logo
16:13 - 09:00
STL
-
SYD
24h 47m
2 stops
$1,479American Airlines
Wed, 18 Mar - Wed, 25 Mar
American Airlines Logo
11:20 - 21:11
SYD
-
STL
25h 51m
2 stops
American Airlines Logo
06:38 - 09:00
STL
-
SYD
34h 22m
1 stop
$1,497American Airlines
Thu, 12 Mar - Mon, 16 Mar
Multiple Airlines Logo
16:05 - 22:58
MEL
-
STL
22h 53m
1 stop
Multiple Airlines Logo
18:50 - 11:25
STL
-
MEL
24h 35m
2 stops
$1,699Multiple Airlines
Wed, 18 Mar - Wed, 25 Mar
Qantas Airways Logo
12:00 - 23:58
MEL
-
STL
27h 58m
1 stop
Qantas Airways Logo
16:13 - 05:00
STL
-
MEL
20h 47m
1 stop
$2,082Qantas Airways
Wed, 18 Mar - Wed, 25 Mar
Multiple Airlines Logo
05:05 - 15:29
BNE
-
STL
50h 24m
3 stops
Multiple Airlines Logo
14:47 - 20:20
STL
-
BNE
38h 33m
2 stops
$2,489Multiple Airlines
Fri, 6 Mar - Thu, 12 Mar

Qantas Airways flights from Australia to St. Louis

Our best Qantas Airways deals on Australia to St. Louis flight tickets
Qantas Airways
5 Aug
SYD17:50Sydney Kingsford Smith
20h 18m
1 stop
STL23:08Lambert-St Louis
29 Aug
STL19:46Lambert-St Louis
20h 09m
1 stop
SYD06:55Sydney Kingsford Smith
$1,540
Qantas Airways
26 Apr
SYD09:10Sydney Kingsford Smith
29h 47m
1 stop
STL23:57Lambert-St Louis
30 Apr
STL18:11Lambert-St Louis
21h 44m
1 stop
SYD06:55Sydney Kingsford Smith
$1,646
Qantas Airways
18 Mar
MEL12:00Melbourne
27h 58m
1 stop
STL23:58Lambert-St Louis
25 Mar
STL16:13Lambert-St Louis
20h 47m
1 stop
MEL05:00Melbourne
$2,082

Delta flights from Australia to St. Louis

Our best Delta deals on Australia to St. Louis flight tickets
Delta
18 Mar
MEL09:10Melbourne
30h 15m
2 stops
STL23:25Lambert-St Louis
25 Mar
STL12:28Lambert-St Louis
26h 32m
2 stops
MEL07:00Melbourne
$1,275
Delta
18 Mar
SYD09:40Sydney Kingsford Smith
23h 25m
2 stops
STL17:05Lambert-St Louis
25 Mar
STL07:03Lambert-St Louis
32h 22m
2 stops
SYD07:25Sydney Kingsford Smith
$1,506
Delta
26 Apr
SYD09:15Sydney Kingsford Smith
30h 10m
2 stops
STL00:25Lambert-St Louis
30 Apr
STL13:02Lambert-St Louis
26h 48m
2 stops
SYD06:50Sydney Kingsford Smith
$1,606

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 21 February 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

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Fri 6/3

11:40-22:59

2 stops27h 19m

Lambert-St Louis

Thu 12/3

07:41-06:30

2 stops31h 49m

$1,272

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 18/3

09:10-23:25

2 stops30h 15m

Lambert-St Louis

Wed 25/3

12:28-07:00

2 stops26h 32m

$1,275

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 6/8

09:20-14:02

2 stops43h 42m

Lambert-St Louis

Sat 29/8

08:55-07:20

2 stops55h 25m

$1,448

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 6/8

09:20-14:02

2 stops43h 42m

Lambert-St Louis

Sat 29/8

08:55-07:20

2 stops55h 25m

$1,451

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 6/8

09:20-14:02

2 stops43h 42m

Lambert-St Louis

Sat 29/8

08:55-07:20

2 stops55h 25m

$1,453

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 18/3

11:20-23:58

1 stop28h 38m

Lambert-St Louis

Wed 25/3

16:13-09:00

2 stops24h 47m

$1,479

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

11:20-21:11

2 stops25h 51m

Lambert-St Louis

Mon 16/3

06:38-09:00

1 stop34h 22m

$1,497

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 18/3

16:05-22:58

1 stop22h 53m

Lambert-St Louis

Wed 25/3

18:50-11:25

2 stops24h 35m

$1,699

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 18/3

12:00-23:58

1 stop27h 58m

Lambert-St Louis

Wed 25/3

16:13-05:00

1 stop20h 47m

$2,082

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Fri 6/3

05:05-15:29

3 stops50h 24m

Lambert-St Louis

Thu 12/3

14:47-20:20

2 stops38h 33m

$2,489

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 August is, on average, the cheapest month to fly to St. Louis from Australia, with most prices found around $1,633. If you aren’t able to travel to St. Louis during the month of August, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,680.

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

19h 51m

Direct flights

None
The fastest flight from Australia to St. Louis takes 19h 51m
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 $1,037Free cancellationRating
7.1
10,734 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,159Free cancellationRating
7.4
9,336 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $1,376Free cancellationRating
7.5
995 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
Chesterfield
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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