What is the cheapest airline that flies from Lambert-St Louis to Australia?

Air Canada, United Airlines, and Qantas Airways are the most popular carriers operating from Lambert-St Louis to Australia

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

Prices for flights from Lambert-St Louis Airport to Australia are refreshed on a daily basis.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Australia.

What documentation or ID do you need to fly to Australia?

The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$703 Cheap Flights from St. Louis to Australia in 2026

1 adult

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Find the cheapest flights from St. Louis to Australia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

13:05 - 07:05

STL

BNE

27h 00m

2 stops

10:00 - 20:43

BNE

STL

49h 43m

2 stops

$1,421Air Canada

Mon, 1 Jun - Mon, 15 Jun

13:05 - 07:05

STL

BNE

51h 00m

2 stops

10:15 - 20:43

BNE

STL

49h 28m

2 stops

$1,476Air Canada

Sat, 30 May - Thu, 11 Jun

13:20 - 07:05

STL

BNE

50h 45m

2 stops

10:00 - 23:57

BNE

STL

52h 57m

2 stops

$1,638Air Canada

Sat, 27 Jun - Sun, 5 Jul

17:18 - 19:20

STL

MEL

35h 02m

2 stops

07:30 - 22:00

MEL

STL

29h 30m

2 stops

$1,645Multiple Airlines

Tue, 4 Aug - Thu, 13 Aug

13:05 - 07:05

STL

BNE

27h 00m

2 stops

19:25 - 20:09

BNE

STL

39h 44m

3 stops

$1,703Multiple Airlines

Wed, 13 May - Wed, 20 May

18:11 - 11:50

STL

SYD

26h 39m

2 stops

13:15 - 22:59

SYD

STL

24h 44m

2 stops

$1,743Fiji Airways

Tue, 12 May - Tue, 19 May

15:38 - 05:00

STL

MEL

22h 22m

1 stop

09:45 - 23:08

MEL

STL

28h 23m

1 stop

$2,055Qantas Airways

Mon, 18 May - Thu, 13 Aug

19:06 - 08:15

STL

MEL

22h 09m

1 stop

10:55 - 18:24

MEL

STL

22h 29m

1 stop

$2,108United Airlines

Mon, 18 May - Tue, 11 Aug

06:35 - 06:45

STL

MEL

33h 10m

1 stop

13:35 - 18:34

MEL

STL

19h 59m

1 stop

$2,125Qantas Airways

Sat, 27 Jun - Sat, 4 Jul

19:06 - 13:15

STL

CBR

27h 09m

2 stops

08:10 - 15:46

CBR

STL

46h 36m

3 stops

$3,010United Airlines

Thu, 14 May - Thu, 21 May

United Airlines flights from St. Louis to Australia

Our best United Airlines deals on St. Louis to Australia flight tickets

United Airlines

18 May

STL19:06Lambert-St Louis

22h 09m

1 stop

MEL08:15Melbourne

11 Aug

MEL10:55Melbourne

22h 29m

1 stop

STL18:24Lambert-St Louis

$2,108

United Airlines

17 May

STL19:06Lambert-St Louis

20h 49m

1 stop

SYD06:55Sydney Kingsford Smith

10 Aug

SYD09:30Sydney Kingsford Smith

22h 53m

2 stops

STL17:23Lambert-St Louis

$2,118

United Airlines

26 Apr

STL19:05Lambert-St Louis

20h 50m

1 stop

SYD06:55Sydney Kingsford Smith

10 May

SYD10:20Sydney Kingsford Smith

25h 23m

2 stops

STL20:43Lambert-St Louis

$2,127

Air Canada flights from St. Louis to Australia

Our best Air Canada deals on St. Louis to Australia flight tickets

Air Canada

1 June

STL13:05Lambert-St Louis

27h 00m

2 stops

BNE07:05Brisbane

15 June

BNE10:00Brisbane

49h 43m

2 stops

STL20:43Lambert-St Louis

$1,421

Air Canada

30 May

STL13:05Lambert-St Louis

51h 00m

2 stops

BNE07:05Brisbane

11 June

BNE10:15Brisbane

49h 28m

2 stops

STL20:43Lambert-St Louis

$1,476

Air Canada

27 June

STL13:20Lambert-St Louis

50h 45m

2 stops

BNE07:05Brisbane

5 July

BNE10:00Brisbane

52h 57m

2 stops

STL23:57Lambert-St Louis

$1,638

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 1/6

13:05-07:05

2 stops27h 00m

Brisbane

Mon 15/6

10:00-20:43

2 stops49h 43m

$1,421

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 30/5

13:05-07:05

2 stops51h 00m

Brisbane

Thu 11/6

10:15-20:43

2 stops49h 28m

$1,476

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 27/6

13:20-07:05

2 stops50h 45m

Brisbane

Sun 5/7

10:00-23:57

2 stops52h 57m

$1,638

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 4/8

17:18-19:20

2 stops35h 02m

Melbourne

Thu 13/8

07:30-22:00

2 stops29h 30m

$1,645

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Wed 13/5

13:05-07:05

2 stops27h 00m

Brisbane

Wed 20/5

19:25-20:09

3 stops39h 44m

$1,703

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 12/5

18:11-11:50

2 stops26h 39m

Sydney Kingsford Smith

Tue 19/5

13:15-22:59

2 stops24h 44m

$1,743

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Mon 18/5

15:38-05:00

1 stop22h 22m

Melbourne

Thu 13/8

09:45-23:08

1 stop28h 23m

$2,055

Fastest return journey

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Mon 18/5

19:06-08:15

1 stop22h 09m

Melbourne

Tue 11/8

10:55-18:24

1 stop22h 29m

$2,108

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Sat 27/6

06:35-06:45

1 stop33h 10m

Melbourne

Sat 4/7

13:35-18:34

1 stop19h 59m

$2,125

St. LouisCanberra

STL - CBR

STLCBR

Lambert-St Louis

Thu 14/5

19:06-13:15

2 stops27h 09m

Canberra

Thu 21/5

08:10-15:46

3 stops46h 36m

$3,010

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to Australia?

In general, March is the cheapest month to fly from St. Louis to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,809. If you don’t want to visit Australia in March, then you should wait until August to fly from St. Louis, when ticket prices are also cheap, with an average price of $1,867.

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

You could potentially save up to 2% on your flight if you consider stops on a St. Louis to Australia flight.

Cheap St. Louis to Australia flight deals and tips

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

Fastest flight time	21h 47m
Direct flights	None

The fastest flight from St. Louis to Australia takes 21h 47m

There are no direct flights from St. Louis to Australia. There are no popular flight routes from St. Louis to Australia.

Search flight deals

Frequently asked questions about flying from St. Louis to Australia

When did momondo last update prices for flights from Lambert-St Louis Airport to Australia?
Prices for flights from Lambert-St Louis Airport to Australia are refreshed on a daily basis.
How old do you have to be to fly from Lambert-St Louis Airport to Australia?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

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

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

All flight searches from St. Louis to Australia on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Australia.

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

Price alerts on flights to Australia from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.