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

United Airlines, Air Canada, and Delta 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.

$896 Cheap Flights from St. Louis to Australia in 2026

Find the cheapest flights from St. Louis to Australia

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

14:54 - 17:40

STL

SYD

33h 46m

2 stops

11:20 - 23:45

SYD

STL

29h 25m

1 stop

$1,547Qantas Airways

Fri, 13 Nov - Thu, 26 Nov

13:08 - 07:45

STL

BNE

27h 37m

2 stops

10:45 - 15:26

BNE

STL

44h 41m

2 stops

$1,583Air Canada

Sun, 25 Oct - Wed, 18 Nov

19:10 - 05:00

STL

MEL

41h 50m

1 stop

12:00 - 17:54

MEL

STL

22h 54m

1 stop

$1,590Qantas Airways

Tue, 20 Oct - Tue, 3 Nov

19:10 - 05:00

STL

MEL

41h 50m

1 stop

12:00 - 17:02

MEL

STL

21h 02m

1 stop

$1,591Qantas Airways

Tue, 20 Oct - Tue, 27 Oct

12:10 - 07:20

STL

SYD

28h 10m

2 stops

09:20 - 18:41

SYD

STL

48h 21m

2 stops

$1,593Air Canada

Tue, 8 Sep - Wed, 30 Sep

05:40 - 05:00

STL

MEL

31h 20m

1 stop

22:45 - 23:45

MEL

STL

42h 00m

1 stop

$1,594Qantas Airways

Tue, 27 Oct - Wed, 11 Nov

13:36 - 07:20

STL

SYD

26h 44m

2 stops

09:20 - 12:13

SYD

STL

41h 53m

3 stops

$1,597Air Canada

Tue, 8 Sep - Wed, 30 Sep

12:10 - 08:20

STL

SYD

28h 10m

2 stops

11:20 - 15:26

SYD

STL

45h 06m

2 stops

$1,600Air Canada

Tue, 13 Oct - Wed, 18 Nov

12:10 - 07:20

STL

SYD

52h 10m

3 stops

09:20 - 18:41

SYD

STL

48h 21m

2 stops

$1,604Air Canada

Mon, 7 Sep - Sun, 27 Sep

06:04 - 06:45

STL

MEL

32h 41m

1 stop

12:00 - 17:54

MEL

STL

22h 54m

1 stop

$1,606Qantas Airways

Tue, 20 Oct - Tue, 3 Nov

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Qantas Airways flights from St. Louis to Australia

Our best Qantas Airways deals on St. Louis to Australia flight tickets

Qantas Airways

13 Nov

STL14:54Lambert-St Louis

33h 46m

2 stops

SYD17:40Sydney Kingsford Smith

26 Nov

SYD11:20Sydney Kingsford Smith

29h 25m

1 stop

STL23:45Lambert-St Louis

$1,547

Qantas Airways

20 Oct

STL19:10Lambert-St Louis

41h 50m

1 stop

MEL05:00Melbourne

3 Nov

MEL12:00Melbourne

22h 54m

1 stop

STL17:54Lambert-St Louis

$1,590

Qantas Airways

20 Oct

STL19:10Lambert-St Louis

41h 50m

1 stop

MEL05:00Melbourne

27 Oct

MEL12:00Melbourne

21h 02m

1 stop

STL17:02Lambert-St Louis

$1,591

Air Canada flights from St. Louis to Australia

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

Air Canada

3 Aug

STL12:10Lambert-St Louis

51h 55m

2 stops

BNE07:05Brisbane

31 Aug

BNE10:00Brisbane

41h 40m

2 stops

STL12:40Lambert-St Louis

$1,551

Air Canada

25 Oct

STL13:08Lambert-St Louis

27h 37m

2 stops

BNE07:45Brisbane

18 Nov

BNE10:45Brisbane

44h 41m

2 stops

STL15:26Lambert-St Louis

$1,583

Air Canada

8 Sept

STL12:10Lambert-St Louis

28h 10m

2 stops

SYD07:20Sydney Kingsford Smith

30 Sept

SYD09:20Sydney Kingsford Smith

48h 21m

2 stops

STL18:41Lambert-St Louis

$1,593

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 13/11

14:54-17:40

2 stops33h 46m

Sydney Kingsford Smith

Thu 26/11

11:20-23:45

1 stop29h 25m

$1,547

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 25/10

13:08-07:45

2 stops27h 37m

Brisbane

Wed 18/11

10:45-15:26

2 stops44h 41m

$1,583

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 20/10

19:10-05:00

1 stop41h 50m

Melbourne

Tue 3/11

12:00-17:54

1 stop22h 54m

$1,590

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 20/10

19:10-05:00

1 stop41h 50m

Melbourne

Tue 27/10

12:00-17:02

1 stop21h 02m

$1,591

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 8/9

12:10-07:20

2 stops28h 10m

Sydney Kingsford Smith

Wed 30/9

09:20-18:41

2 stops48h 21m

$1,593

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 27/10

05:40-05:00

1 stop31h 20m

Melbourne

Wed 11/11

22:45-23:45

1 stop42h 00m

$1,594

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 8/9

13:36-07:20

2 stops26h 44m

Sydney Kingsford Smith

Wed 30/9

09:20-12:13

3 stops41h 53m

$1,597

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 13/10

12:10-08:20

2 stops28h 10m

Sydney Kingsford Smith

Wed 18/11

11:20-15:26

2 stops45h 06m

$1,600

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 7/9

12:10-07:20

3 stops52h 10m

Sydney Kingsford Smith

Sun 27/9

09:20-18:41

2 stops48h 21m

$1,604

Fastest return journey

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 20/10

06:04-06:45

1 stop32h 41m

Melbourne

Tue 3/11

12:00-17:54

1 stop22h 54m

$1,606

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, May 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 $1,422. If you don’t want to visit Australia in May, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $1,809.

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	20h 32m
Direct flights	None

The fastest flight from St. Louis to Australia takes 20h 32m

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.