How long is the flight from Missouri to Australia?

The flight from Missouri to Australia depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from St. Louis (a popular airport in Missouri) to Sydney (the most popular airport in Australia), then the flight time is 23h 15m on average. If you fly from Kansas City (another popular airport in Missouri) to Sydney, then the average flight time is 23h 25m.

What is the cheapest airline that flies from Missouri to Australia?

American Airlines, United Airlines, and Air Canada are the most popular carriers operating from Missouri to Australia

When did momondo last update prices for flights from Missouri to Australia?

Prices for flights from Missouri to Australia were last updated today.

How many operators does momondo search for flights from Missouri to Australia?

As of February 2026, there is 1 operator available to choose from for flights from Missouri to Australia.

How old do you have to be to fly from Missouri to Australia?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Australia.

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

The travel and health documents required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$694 Cheap Flights from Missouri to Australia in 2026

1 adult

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Find the cheapest flights from Missouri to Australia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

16:13 - 20:50

STL

SYD

36h 37m

2 stops

11:20 - 23:58

SYD

STL

28h 38m

1 stop

$1,270Qantas Airways

Thu, 19 Mar - Wed, 25 Mar

06:38 - 09:00

STL

SYD

33h 22m

1 stop

17:50 - 15:28

SYD

STL

37h 38m

2 stops

$1,283Qantas Airways

Fri, 27 Feb - Mon, 9 Mar

13:00 - 07:05

STL

BNE

51h 05m

2 stops

10:00 - 20:05

BNE

STL

25h 05m

2 stops

$1,372Air Canada

Sat, 23 May - Tue, 9 Jun

13:00 - 07:05

STL

BNE

51h 05m

2 stops

10:00 - 20:05

BNE

STL

25h 05m

2 stops

$1,373Air Canada

Sun, 17 May - Sun, 31 May

16:06 - 07:30

MCI

MEL

24h 24m

1 stop

09:30 - 14:52

MEL

MCI

20h 22m

1 stop

$1,417United Airlines

Wed, 8 Apr - Wed, 15 Apr

17:30 - 10:00

MCI

MEL

23h 30m

1 stop

12:00 - 16:23

MEL

MCI

20h 23m

1 stop

$1,418United Airlines

Sat, 7 Mar - Tue, 10 Mar

15:50 - 07:50

MCI

MEL

25h 00m

1 stop

10:00 - 14:59

MEL

MCI

19h 59m

1 stop

$1,430Delta

Wed, 8 Apr - Wed, 15 Apr

20:11 - 07:00

MCI

MEL

42h 49m

2 stops

09:10 - 00:46

MEL

MCI

31h 36m

2 stops

$1,434Delta

Thu, 12 Mar - Sun, 22 Mar

09:39 - 05:00

MCI

BNE

28h 21m

2 stops

20:35 - 08:58

BNE

MCI

27h 23m

2 stops

$1,622American Airlines

Wed, 20 May - Wed, 3 Jun

11:02 - 05:30

MCI

BNE

27h 28m

1 stop

08:40 - 13:08

BNE

MCI

19h 28m

1 stop

$1,635American Airlines

Wed, 11 Mar - Wed, 18 Mar

Air New Zealand flights from Missouri to Australia

Our best Air New Zealand deals on Missouri to Australia flight tickets

Air New Zealand

27 July

MCI18:20Kansas City

23h 25m

2 stops

SYD08:45Sydney Kingsford Smith

4 Aug

SYD11:55Sydney Kingsford Smith

25h 20m

2 stops

MCI22:15Kansas City

$1,722

Air New Zealand

4 May

STL06:00Lambert-St Louis

35h 45m

2 stops

SYD08:45Sydney Kingsford Smith

18 May

SYD09:55Sydney Kingsford Smith

34h 52m

2 stops

STL05:47Lambert-St Louis

$1,729

Air New Zealand

4 May

STL06:00Lambert-St Louis

35h 45m

2 stops

SYD08:45Sydney Kingsford Smith

18 May

SYD09:55Sydney Kingsford Smith

34h 52m

2 stops

STL05:47Lambert-St Louis

$1,731

Qantas Airways flights from Missouri to Australia

Our best Qantas Airways deals on Missouri to Australia flight tickets

Qantas Airways

19 Mar

STL16:13Lambert-St Louis

36h 37m

2 stops

SYD20:50Sydney Kingsford Smith

25 Mar

SYD11:20Sydney Kingsford Smith

28h 38m

1 stop

STL23:58Lambert-St Louis

$1,270

Qantas Airways

27 Feb

STL06:38Lambert-St Louis

33h 22m

1 stop

SYD09:00Sydney Kingsford Smith

9 Mar

SYD17:50Sydney Kingsford Smith

37h 38m

2 stops

STL15:28Lambert-St Louis

$1,283

Qantas Airways

17 Feb

STL06:38Lambert-St Louis

33h 22m

1 stop

SYD09:00Sydney Kingsford Smith

19 Feb

SYD14:35Sydney Kingsford Smith

43h 38m

2 stops

STL17:13Lambert-St Louis

$1,287

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 19/3

16:13-20:50

2 stops36h 37m

Sydney Kingsford Smith

Wed 25/3

11:20-23:58

1 stop28h 38m

$1,270

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 27/2

06:38-09:00

1 stop33h 22m

Sydney Kingsford Smith

Mon 9/3

17:50-15:28

2 stops37h 38m

$1,283

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 23/5

13:00-07:05

2 stops51h 05m

Brisbane

Tue 9/6

10:00-20:05

2 stops25h 05m

$1,372

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 17/5

13:00-07:05

2 stops51h 05m

Brisbane

Sun 31/5

10:00-20:05

2 stops25h 05m

$1,373

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Wed 8/4

16:06-07:30

1 stop24h 24m

Melbourne

Wed 15/4

09:30-14:52

1 stop20h 22m

$1,417

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Sat 7/3

17:30-10:00

1 stop23h 30m

Melbourne

Tue 10/3

12:00-16:23

1 stop20h 23m

$1,418

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Wed 8/4

15:50-07:50

1 stop25h 00m

Melbourne

Wed 15/4

10:00-14:59

1 stop19h 59m

$1,430

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Thu 12/3

20:11-07:00

2 stops42h 49m

Melbourne

Sun 22/3

09:10-00:46

2 stops31h 36m

$1,434

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Wed 20/5

09:39-05:00

2 stops28h 21m

Brisbane

Wed 3/6

20:35-08:58

2 stops27h 23m

$1,622

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Wed 11/3

11:02-05:30

1 stop27h 28m

Brisbane

Wed 18/3

08:40-13:08

1 stop19h 28m

$1,635

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 Missouri 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

Other information

What is the cheapest month to fly to Australia?

In general, September is the cheapest month to fly from Missouri to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,601. If you don’t want to visit Australia in September, then you should wait until March to fly from Missouri, when ticket prices are also cheap, with an average price of $1,753.

Can stopping save me money on Missouri to Australia flights?

You could potentially save up to 8% on your flight if you consider stops on a Missouri to Australia flight.

Cheap Missouri to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Australia

Fastest flight time	20h 12m
Direct flights	None

The fastest flight from Missouri to Australia takes 20h 12m

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

Search flight deals

When did momondo last update prices for flights from Missouri to Australia?
Prices for flights from Missouri to Australia were last updated today.
How many operators does momondo search for flights from Missouri to Australia?
As of February 2026, there is 1 operator available to choose from for flights from Missouri to Australia.
How old do you have to be to fly from Missouri to Australia?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Missouri to Australia

Compare and see reviews for airlines that fly from Missouri to Australia with momondo

Airline	Rating	Free cancellation	Price
United Airlines	PriceFrom $1,999	Free cancellation	Rating 7.4 9,296 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Australia?

It is quick and easy to find Missouri to Australia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Australia that suits you.

Can I find flights from Missouri to Australia with flexible booking policies on momondo?

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

How can momondo help me find flights from Missouri 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 Missouri to Australia.

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

If you are not ready to book a flight from Missouri to Australia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Australia and let you know when they change.