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

Delta, United Airlines, and Asiana 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.

$766 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.

12:45 - 06:45

STL

MEL

27h 00m

2 stops

09:45 - 18:59

MEL

STL

24h 14m

2 stops

$1,543American Airlines

Sat, 22 Aug - Mon, 31 Aug

12:45 - 06:45

STL

MEL

27h 00m

2 stops

09:45 - 18:59

MEL

STL

24h 14m

2 stops

$1,545American Airlines

Sat, 22 Aug - Mon, 31 Aug

19:23 - 08:15

STL

MEL

21h 52m

1 stop

10:55 - 18:17

MEL

STL

22h 22m

1 stop

$1,552United Airlines

Thu, 30 Jul - Thu, 6 Aug

16:40 - 08:15

STL

MEL

24h 35m

2 stops

10:55 - 18:39

MEL

STL

22h 44m

1 stop

$1,553United Airlines

Fri, 28 Aug - Fri, 4 Sep

06:30 - 09:30

STL

MEL

35h 00m

1 stop

23:15 - 23:42

MEL

STL

41h 27m

1 stop

$1,565Qantas Airways

Tue, 27 Oct - Wed, 11 Nov

19:05 - 08:50

STL

MEL

45h 45m

2 stops

12:00 - 00:36

MEL

STL

29h 36m

2 stops

$1,569Delta

Tue, 20 Oct - Tue, 3 Nov

07:00 - 09:00

STL

SYD

33h 00m

1 stop

17:50 - 15:29

SYD

STL

38h 39m

2 stops

$1,767Qantas Airways

Mon, 16 Nov - Sat, 21 Nov

08:48 - 06:50

STL

SYD

31h 02m

2 stops

09:15 - 16:47

SYD

STL

22h 32m

2 stops

$1,784Delta

Mon, 31 Aug - Wed, 9 Sep

12:10 - 07:05

STL

BNE

27h 55m

2 stops

10:00 - 18:41

BNE

STL

47h 41m

2 stops

$1,995Air Canada

Sun, 30 Aug - Wed, 9 Sep

12:10 - 07:05

STL

BNE

27h 55m

2 stops

10:15 - 20:00

BNE

STL

24h 45m

2 stops

$2,002Air Canada

Mon, 31 Aug - Thu, 10 Sep

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Delta flights from St. Louis to Australia

Our best Delta deals on St. Louis to Australia flight tickets

Delta

20 Oct

STL19:05Lambert-St Louis

45h 45m

2 stops

MEL08:50Melbourne

3 Nov

MEL12:00Melbourne

29h 36m

2 stops

STL00:36Lambert-St Louis

$1,569

Delta

1 Sept

STL17:23Lambert-St Louis

47h 27m

2 stops

MEL07:50Melbourne

9 Sept

MEL10:00Melbourne

25h 35m

2 stops

STL20:35Lambert-St Louis

$1,588

Delta

21 June

STL14:28Lambert-St Louis

25h 22m

2 stops

SYD06:50Sydney Kingsford Smith

5 July

SYD09:15Sydney Kingsford Smith

29h 08m

2 stops

STL23:23Lambert-St Louis

$1,699

Air Canada flights from St. Louis to Australia

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

Air Canada

1 Sept

STL12:10Lambert-St Louis

27h 55m

2 stops

BNE07:05Brisbane

9 Sept

BNE10:00Brisbane

23h 41m

2 stops

STL18:41Lambert-St Louis

$1,995

Air Canada

23 Sept

STL12:10Lambert-St Louis

28h 10m

2 stops

SYD07:20Sydney Kingsford Smith

7 Oct

SYD10:20Sydney Kingsford Smith

24h 21m

2 stops

STL18:41Lambert-St Louis

$1,998

Air Canada

13 Oct

STL16:39Lambert-St Louis

23h 41m

2 stops

SYD08:20Sydney Kingsford Smith

13 Nov

SYD11:20Sydney Kingsford Smith

42h 00m

3 stops

STL12:20Lambert-St Louis

$2,001

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Sat 22/8

12:45-06:45

2 stops27h 00m

Melbourne

Mon 31/8

09:45-18:59

2 stops24h 14m

$1,543

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Sat 22/8

12:45-06:45

2 stops27h 00m

Melbourne

Mon 31/8

09:45-18:59

2 stops24h 14m

$1,545

Fastest return journey

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Thu 30/7

19:23-08:15

1 stop21h 52m

Melbourne

Thu 6/8

10:55-18:17

1 stop22h 22m

$1,552

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Fri 28/8

16:40-08:15

2 stops24h 35m

Melbourne

Fri 4/9

10:55-18:39

1 stop22h 44m

$1,553

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 27/10

06:30-09:30

1 stop35h 00m

Melbourne

Wed 11/11

23:15-23:42

1 stop41h 27m

$1,565

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 20/10

19:05-08:50

2 stops45h 45m

Melbourne

Tue 3/11

12:00-00:36

2 stops29h 36m

$1,569

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 16/11

07:00-09:00

1 stop33h 00m

Sydney Kingsford Smith

Sat 21/11

17:50-15:29

2 stops38h 39m

$1,767

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 31/8

08:48-06:50

2 stops31h 02m

Sydney Kingsford Smith

Wed 9/9

09:15-16:47

2 stops22h 32m

$1,784

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 30/8

12:10-07:05

2 stops27h 55m

Brisbane

Wed 9/9

10:00-18:41

2 stops47h 41m

$1,995

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 31/8

12:10-07:05

2 stops27h 55m

Brisbane

Thu 10/9

10:15-20:00

2 stops24h 45m

$2,002

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 $441. If you don’t want to visit Australia in May, then you should wait until December to fly from St. Louis, when ticket prices are also cheap, with an average price of $725.

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 52m
Direct flights	None

The fastest flight from St. Louis to Australia takes 21h 52m

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.