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

American Airlines, Delta, and Qantas Airways are the most popular carriers operating from Missouri to Australia

How long is the flight from Missouri to Australia?

Flight times from Missouri to Australia vary, but if you’re flying out of St. Louis and flying into Sydney (one of the most popular routes), then the duration is 22h 47m on average. Another popular route from Missouri to Australia is flying from Kansas City to Sydney, which will take roughly 23h 01m. 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 50% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 7 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

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 November 2025, there are 7 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.

$543 Cheap Flights from Missouri to Australia in 2025/26

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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.

8:45 am - 8:45 amSTL-BNE

32h 00m2 stops

10:45 am - 3:29 pmBNE-STL

44h 44m2 stops

$904Air Canada

Find Deal

Sun, Feb 1 - Sun, Feb 15

1:42 pm - 8:45 amMCI-BNE

27h 03m2 stops

10:45 am - 4:19 pmBNE-MCI

21h 34m2 stops

$908Air Canada

Find Deal

Mon, Feb 2 - Tue, Feb 24

2:45 pm - 8:45 amSTL-BNE

26h 00m2 stops

6:10 am - 3:29 pmBNE-STL

49h 19m3 stops

$922Multiple Airlines

Find Deal

Sun, Feb 1 - Sun, Feb 15

5:10 pm - 8:45 amMCI-BNE

23h 35m2 stops

10:45 am - 4:08 pmBNE-MCI

21h 23m2 stops

$943Multiple Airlines

Find Deal

Sun, Feb 1 - Sat, Feb 7

5:04 pm - 8:20 amSTL-MEL

46h 16m2 stops

12:00 pm - 11:48 pmMEL-STL

28h 48m1 stop

$964Qantas Airways

Find Deal

Mon, Feb 2 - Sat, Feb 14

5:04 pm - 10:45 pmSTL-MEL

36h 41m2 stops

12:00 pm - 11:48 pmMEL-STL

28h 48m1 stop

$993Qantas Airways

Find Deal

Mon, Feb 2 - Sat, Feb 14

7:04 am - 5:00 amSTL-BNE

29h 56m1 stop

7:40 pm - 11:48 pmBNE-STL

20h 08m1 stop

$1,014American Airlines

Find Deal

Sun, Feb 1 - Sun, Feb 15

7:04 am - 5:00 amSTL-BNE

29h 56m1 stop

7:40 pm - 11:48 pmBNE-STL

20h 08m1 stop

$1,015American Airlines

Find Deal

Sun, Feb 1 - Sun, Feb 15

11:36 am - 10:00 amMCI-MEL

29h 24m2 stops

1:00 pm - 4:46 pmMEL-MCI

20h 46m1 stop

$1,284United Airlines

Find Deal

Tue, Dec 9 - Tue, Dec 16

8:08 am - 10:00 amMCI-MEL

32h 52m2 stops

1:00 pm - 11:07 pmMEL-MCI

27h 07m2 stops

$1,288United Airlines

Find Deal

Tue, Dec 9 - Tue, Dec 16

Delta flights from Missouri to Australia

Our best Delta deals on Missouri to Australia flight tickets

Delta

Jan 30

STL5:00 pmLambert-St Louis

23h 20m

2 stops

BNE8:20 amBrisbane

Feb 13

BNE10:40 amBrisbane

28h 58m

2 stops

STL11:38 pmLambert-St Louis

$1,041

Find similar

Delta

Jan 29

STL5:00 pmLambert-St Louis

47h 20m

2 stops

BNE8:20 amBrisbane

Feb 18

BNE11:05 amBrisbane

21h 42m

2 stops

STL4:47 pmLambert-St Louis

$1,055

Find similar

Delta

Jan 29

STL5:00 pmLambert-St Louis

47h 20m

2 stops

BNE8:20 amBrisbane

Feb 13

BNE10:40 amBrisbane

22h 07m

2 stops

STL4:47 pmLambert-St Louis

$1,056

Find similar

United Airlines flights from Missouri to Australia

Our best United Airlines deals on Missouri to Australia flight tickets

United Airlines

Apr 3

STL7:06 pmLambert-St Louis

22h 09m

1 stop

MEL9:15 amMelbourne

Apr 19

MEL10:55 amMelbourne

22h 27m

1 stop

STL6:22 pmLambert-St Louis

$1,284

Find similar

United Airlines

Apr 3

STL4:44 pmLambert-St Louis

23h 46m

2 stops

MEL8:30 amMelbourne

Apr 19

MEL9:30 amMelbourne

23h 21m

2 stops

STL5:51 pmLambert-St Louis

$1,288

Find similar

United Airlines

Nov 15

MCI5:35 pmKansas City

22h 40m

1 stop

SYD9:15 amSydney Kingsford Smith

Dec 1

SYD11:50 amSydney Kingsford Smith

19h 23m

1 stop

MCI2:13 pmKansas City

$1,811

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 2/1

8:45 am-8:45 am

2 stops32h 00m

Brisbane

Sun 2/15

10:45 am-3:29 pm

2 stops44h 44m

$904

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Mon 2/2

1:42 pm-8:45 am

2 stops27h 03m

Brisbane

Tue 2/24

10:45 am-4:19 pm

2 stops21h 34m

$908

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 2/1

2:45 pm-8:45 am

2 stops26h 00m

Brisbane

Sun 2/15

6:10 am-3:29 pm

3 stops49h 19m

$922

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Sun 2/1

5:10 pm-8:45 am

2 stops23h 35m

Brisbane

Sat 2/7

10:45 am-4:08 pm

2 stops21h 23m

$943

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Mon 2/2

5:04 pm-8:20 am

2 stops46h 16m

Melbourne

Sat 2/14

12:00 pm-11:48 pm

1 stop28h 48m

$964

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Mon 2/2

5:04 pm-10:45 pm

2 stops36h 41m

Melbourne

Sat 2/14

12:00 pm-11:48 pm

1 stop28h 48m

$993

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 2/1

7:04 am-5:00 am

1 stop29h 56m

Brisbane

Sun 2/15

7:40 pm-11:48 pm

1 stop20h 08m

$1,014

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 2/1

7:04 am-5:00 am

1 stop29h 56m

Brisbane

Sun 2/15

7:40 pm-11:48 pm

1 stop20h 08m

$1,015

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Tue 12/9

11:36 am-10:00 am

2 stops29h 24m

Melbourne

Tue 12/16

1:00 pm-4:46 pm

1 stop20h 46m

$1,284

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Tue 12/9

8:08 am-10:00 am

2 stops32h 52m

Melbourne

Tue 12/16

1:00 pm-11:07 pm

2 stops27h 07m

$1,288

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 October instead. Flights to Australia in October, while not as cheap as those in August, still average around $1,331.

What is the cheapest day to depart on your flight to Australia?

The cheapest day to depart from Missouri to Australia is on a Wednesday. Travelers who choose to depart for Australia on a Wednesday will often find tickets for as low as $1,392. On the other hand, Saturday is the most expensive day to depart from Missouri because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,518.

What is the cheapest time of day to depart on your flight to Australia?

Flying to Australia from Missouri in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,440 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,882 on average. Flights to Australia from Missouri at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Missouri to Australia flights?

You could potentially save up to 13% 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

Direct flights	None

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 November 2025, there are 7 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 $822	Free Cancellation	Rating 7.4 9,015 reviews	Search United Airlines flights
Air Canada	PriceFrom $897	Free Cancellation	Rating 7.1 10,444 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $975	Free Cancellation	Rating 7.5 933 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $1,044	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights
Fiji Airways	PriceFrom $1,132	Free Cancellation	Rating 8.1 209 reviews	Search Fiji Airways flights
Delta	PriceFrom $1,211	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
Air New Zealand	PriceFrom $1,259	Free Cancellation	Rating 8.0 526 reviews	Search Air New Zealand 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.