How long is the flight from Missouri to Australia?

Flight times from Missouri to Australia vary, but if you’re flying out of Kansas City and flying into Sydney (one of the most popular routes), then the duration is 19h 56m on average. Another popular route from Missouri to Australia is flying from St. Louis to Sydney, which will take roughly 23h 15m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Australia?

United Airlines, Qantas Airways and American Airlines are the top three most popular airlines that fly to Australia from Missouri according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 6 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

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 refresh daily.

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

As of February 2026, there are 6 operators 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers 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 Missouri 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 license 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.

$491 Cheap Flights from Missouri to Australia in 2026

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Find the cheapest flights from Missouri to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:13 pm - 8:50 pm

STL

SYD

35h 37m

2 stops

11:20 am - 11:58 pm

SYD

STL

28h 38m

1 stop

$898Qantas Airways

Tue, Mar 3 - Tue, Mar 10

4:13 pm - 8:50 pm

STL

SYD

36h 37m

2 stops

11:20 am - 11:58 pm

SYD

STL

28h 38m

1 stop

$899Qantas Airways

Thu, Mar 19 - Wed, Mar 25

4:05 pm - 7:45 am

STL

BNE

48h 40m

2 stops

10:00 am - 4:56 pm

BNE

STL

21h 56m

2 stops

$961Multiple Airlines

Sun, Mar 22 - Wed, Apr 29

1:00 pm - 7:05 am

STL

BNE

51h 05m

2 stops

10:00 am - 8:05 pm

BNE

STL

25h 05m

2 stops

$971Air Canada

Sat, May 23 - Tue, Jun 9

4:05 pm - 1:30 pm

STL

BNE

54h 25m

3 stops

10:00 am - 4:56 pm

BNE

STL

21h 56m

2 stops

$995Multiple Airlines

Sun, Mar 22 - Wed, Apr 29

6:00 am - 7:05 am

MCI

BNE

34h 05m

2 stops

10:00 am - 12:42 pm

BNE

MCI

41h 42m

2 stops

$999Air Canada

Sun, May 10 - Fri, May 22

4:06 pm - 7:30 am

MCI

MEL

24h 24m

1 stop

9:30 am - 2:52 pm

MEL

MCI

20h 22m

1 stop

$1,003United Airlines

Wed, Apr 8 - Wed, Apr 15

5:30 pm - 10:00 am

MCI

MEL

23h 30m

1 stop

12:00 pm - 4:23 pm

MEL

MCI

20h 23m

1 stop

$1,004United Airlines

Sat, Mar 7 - Tue, Mar 10

6:41 pm - 7:00 am

MCI

MEL

44h 19m

2 stops

9:10 am - 12:46 am

MEL

MCI

31h 36m

2 stops

$1,015Delta

Thu, Mar 12 - Sun, Mar 22

3:50 pm - 7:20 am

MCI

BNE

24h 30m

1 stop

10:05 am - 2:54 pm

BNE

MCI

19h 49m

1 stop

$1,166Delta

Wed, Mar 11 - Wed, Mar 18

Air Canada flights from Missouri to Australia

Our best Air Canada deals on Missouri to Australia flight tickets

Air Canada

May 23

STL1:00 pmLambert-St Louis

51h 05m

2 stops

BNE7:05 amBrisbane

Jun 9

BNE10:00 amBrisbane

25h 05m

2 stops

STL8:05 pmLambert-St Louis

$971

Air Canada

May 10

MCI6:00 amKansas City

34h 05m

2 stops

BNE7:05 amBrisbane

May 22

BNE10:00 amBrisbane

41h 42m

2 stops

MCI12:42 pmKansas City

$999

Air Canada

Mar 2

STL4:05 pmLambert-St Louis

48h 40m

2 stops

BNE8:45 amBrisbane

Mar 9

BNE10:45 amBrisbane

43h 44m

2 stops

STL3:29 pmLambert-St Louis

$1,036

American Airlines flights from Missouri to Australia

Our best American Airlines deals on Missouri to Australia flight tickets

American Airlines

May 20

MCI9:39 amKansas City

28h 21m

2 stops

BNE5:00 amBrisbane

Jun 3

BNE8:35 pmBrisbane

27h 23m

2 stops

MCI8:58 amKansas City

$1,148

American Airlines

Mar 11

MCI11:02 amKansas City

27h 28m

1 stop

BNE5:30 amBrisbane

Mar 18

BNE8:40 amBrisbane

19h 28m

1 stop

MCI1:08 pmKansas City

$1,157

American Airlines

Mar 11

MCI2:23 pmKansas City

24h 07m

2 stops

BNE5:30 amBrisbane

Mar 18

BNE8:40 amBrisbane

19h 28m

1 stop

MCI1:08 pmKansas City

$1,161

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 3/3

4:13 pm-8:50 pm

2 stops35h 37m

Sydney Kingsford Smith

Tue 3/10

11:20 am-11:58 pm

1 stop28h 38m

$898

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 3/19

4:13 pm-8:50 pm

2 stops36h 37m

Sydney Kingsford Smith

Wed 3/25

11:20 am-11:58 pm

1 stop28h 38m

$899

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 3/22

4:05 pm-7:45 am

2 stops48h 40m

Brisbane

Wed 4/29

10:00 am-4:56 pm

2 stops21h 56m

$961

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 5/23

1:00 pm-7:05 am

2 stops51h 05m

Brisbane

Tue 6/9

10:00 am-8:05 pm

2 stops25h 05m

$971

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 3/22

4:05 pm-1:30 pm

3 stops54h 25m

Brisbane

Wed 4/29

10:00 am-4:56 pm

2 stops21h 56m

$995

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Sun 5/10

6:00 am-7:05 am

2 stops34h 05m

Brisbane

Fri 5/22

10:00 am-12:42 pm

2 stops41h 42m

$999

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Wed 4/8

4:06 pm-7:30 am

1 stop24h 24m

Melbourne

Wed 4/15

9:30 am-2:52 pm

1 stop20h 22m

$1,003

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Sat 3/7

5:30 pm-10:00 am

1 stop23h 30m

Melbourne

Tue 3/10

12:00 pm-4:23 pm

1 stop20h 23m

$1,004

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Thu 3/12

6:41 pm-7:00 am

2 stops44h 19m

Melbourne

Sun 3/22

9:10 am-12:46 am

2 stops31h 36m

$1,015

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Wed 3/11

3:50 pm-7:20 am

1 stop24h 30m

Brisbane

Wed 3/18

10:05 am-2:54 pm

1 stop19h 49m

$1,166

Flights are sorted by cheapest round-trip 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?

The month of August is, on average, the cheapest month to fly to Australia from Missouri, with most prices found around $1,275. If you aren’t able to travel during the month of August, then book flights to Australia from Missouri during March instead. Flights to Australia in March, while not as cheap as those in August, still average around $1,299.

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	19h 40m
Direct flights	None

The fastest flight from Missouri to Australia takes 19h 40m

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 refresh daily.
How many operators does momondo search for flights from Missouri to Australia?
As of February 2026, there are 6 operators 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers 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 Missouri 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 license 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.

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 $551	Free Cancellation	Rating 7.4 9,283 reviews	Search United Airlines flights
Air Canada	PriceFrom $608	Free Cancellation	Rating 7.1 10,712 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $756	Free Cancellation	Rating 7.5 988 reviews	Search Qantas Airways flights
Delta	PriceFrom $848	Free Cancellation	Rating 7.9 8,187 reviews	Search Delta flights
American Airlines	PriceFrom $973	Free Cancellation	Rating 7.2 11,275 reviews	Search American Airlines flights
Fiji Airways	PriceFrom $1,132	Free Cancellation	Rating 8.0 225 reviews	Search Fiji Airways flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Missouri to Australia. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Missouri to Australia flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Missouri and Australia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Australia from Missouri 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.