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

Air Canada, Qantas Airways, and United Airlines 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.

$730 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.

18:11 - 19:20

STL

MEL

34h 09m

2 stops

07:30 - 22:00

MEL

STL

29h 30m

2 stops

$1,552Multiple Airlines

Sat, 16 May - Sat, 15 Aug

12:10 - 07:05

STL

BNE

51h 55m

2 stops

10:00 - 20:00

BNE

STL

25h 00m

2 stops

$1,632Air Canada

Tue, 8 Sep - Mon, 28 Sep

05:10 - 07:20

STL

SYD

35h 10m

2 stops

09:20 - 14:02

SYD

STL

43h 42m

2 stops

$1,651Air Canada

Mon, 13 Jul - Sun, 19 Jul

12:10 - 07:05

STL

BNE

51h 55m

2 stops

20:40 - 20:00

BNE

STL

38h 20m

3 stops

$1,672Multiple Airlines

Tue, 8 Sep - Mon, 28 Sep

06:21 - 09:35

STL

SYD

36h 14m

2 stops

12:00 - 17:21

SYD

STL

20h 21m

1 stop

$1,976Qantas Airways

Wed, 13 May - Wed, 20 May

06:21 - 19:10

STL

SYD

45h 49m

2 stops

12:00 - 17:21

SYD

STL

20h 21m

1 stop

$2,041Qantas Airways

Tue, 5 May - Tue, 12 May

06:02 - 18:35

STL

PER

47h 33m

2 stops

22:45 - 23:59

PER

STL

38h 14m

2 stops

$2,153Qatar Airways

Tue, 18 Aug - Sun, 20 Sep

06:02 - 18:35

STL

PER

47h 33m

2 stops

22:45 - 23:59

PER

STL

38h 14m

2 stops

$2,277Qatar Airways

Tue, 18 Aug - Sun, 20 Sep

08:52 - 15:55

STL

CNS

40h 03m

2 stops

06:00 - 17:53

CNS

STL

26h 53m

2 stops

$2,545United Airlines

Thu, 17 Sep - Mon, 28 Sep

08:52 - 15:55

STL

CNS

40h 03m

2 stops

06:00 - 15:38

CNS

STL

48h 38m

3 stops

$2,573United Airlines

Thu, 17 Sep - Mon, 28 Sep

Air Canada flights from St. Louis to Australia

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

Air Canada

8 Sept

STL12:10Lambert-St Louis

51h 55m

2 stops

BNE07:05Brisbane

28 Sept

BNE10:00Brisbane

25h 00m

2 stops

STL20:00Lambert-St Louis

$1,632

Air Canada

13 July

STL05:10Lambert-St Louis

35h 10m

2 stops

SYD07:20Sydney Kingsford Smith

19 July

SYD09:20Sydney Kingsford Smith

43h 42m

2 stops

STL14:02Lambert-St Louis

$1,651

Air Canada

26 May

STL07:05Lambert-St Louis

37h 00m

3 stops

MEL11:05Melbourne

2 June

MEL06:00Melbourne

45h 06m

3 stops

STL12:06Lambert-St Louis

$1,697

Qantas Airways flights from St. Louis to Australia

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

Qantas Airways

13 May

STL06:21Lambert-St Louis

36h 14m

2 stops

SYD09:35Sydney Kingsford Smith

20 May

SYD12:00Sydney Kingsford Smith

20h 21m

1 stop

STL17:21Lambert-St Louis

$1,976

Qantas Airways

19 May

STL06:21Lambert-St Louis

31h 39m

1 stop

BNE05:00Brisbane

16 Aug

BNE06:00Brisbane

25h 42m

2 stops

STL16:42Lambert-St Louis

$2,020

Qantas Airways

25 June

STL06:35Lambert-St Louis

31h 25m

1 stop

BNE05:00Brisbane

5 July

BNE07:40Brisbane

23h 53m

2 stops

STL16:33Lambert-St Louis

$2,030

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Sat 16/5

18:11-19:20

2 stops34h 09m

Melbourne

Sat 15/8

07:30-22:00

2 stops29h 30m

$1,552

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Tue 8/9

12:10-07:05

2 stops51h 55m

Brisbane

Mon 28/9

10:00-20:00

2 stops25h 00m

$1,632

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 13/7

05:10-07:20

2 stops35h 10m

Sydney Kingsford Smith

Sun 19/7

09:20-14:02

2 stops43h 42m

$1,651

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Tue 8/9

12:10-07:05

2 stops51h 55m

Brisbane

Mon 28/9

20:40-20:00

3 stops38h 20m

$1,672

Fastest return journey

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 13/5

06:21-09:35

2 stops36h 14m

Sydney Kingsford Smith

Wed 20/5

12:00-17:21

1 stop20h 21m

$1,976

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 5/5

06:21-19:10

2 stops45h 49m

Sydney Kingsford Smith

Tue 12/5

12:00-17:21

1 stop20h 21m

$2,041

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 18/8

06:02-18:35

2 stops47h 33m

Perth

Sun 20/9

22:45-23:59

2 stops38h 14m

$2,153

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 18/8

06:02-18:35

2 stops47h 33m

Perth

Sun 20/9

22:45-23:59

2 stops38h 14m

$2,277

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Thu 17/9

08:52-15:55

2 stops40h 03m

Cairns

Mon 28/9

06:00-17:53

2 stops26h 53m

$2,545

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Thu 17/9

08:52-15:55

2 stops40h 03m

Cairns

Mon 28/9

06:00-15:38

3 stops48h 38m

$2,573

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 $1,744. If you don’t want to visit Australia in March, then you should wait until October to fly from St. Louis, when ticket prices are also cheap, with an average price of $1,795.

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 04m
Direct flights	None

The fastest flight from St. Louis to Australia takes 20h 04m

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.