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 21h 29m on average. Another popular route from Missouri to Australia is flying from St. Louis to Sydney, which will take roughly 21h 47m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Australia?

United Airlines, Qantas Airways and Delta 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 47% 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.

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

American Airlines, Delta, 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 August 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.

$561 Cheap Flights from Missouri to Australia in 2025

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Find the cheapest flights from Missouri to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

1:35 pm - 8:35 amSTL-SYD

27h 00m2 stops

11:20 am - 3:29 pmSYD-STL

45h 09m2 stops

$968

Find Deal

Τετ, Οκτ 29 - Σαβ, Νοε 15

4:55 pm - 8:35 amSTL-SYD

23h 40m2 stops

11:20 am - 3:29 pmSYD-STL

45h 09m1 stop

$969

Find Deal

Τετ, Οκτ 29 - Σαβ, Νοε 15

6:00 am - 7:20 amMCI-SYD

34h 20m2 stops

9:20 am - 11:27 pmSYD-MCI

29h 07m2 stops

$999Air Canada

Find Deal

Τετ, Αυγ 13 - Τρι, Αυγ 19

6:26 pm - 6:55 amMCI-SYD

21h 29m1 stop

12:10 pm - 7:05 pmSYD-MCI

21h 55m1 stop

$1,022Qantas Airways

Find Deal

Τετ, Σεπ 3 - Τετ, Σεπ 17

1:47 pm - 8:35 amMCI-SYD

26h 48m2 stops

10:20 am - 4:05 pmSYD-MCI

21h 45m2 stops

$1,025Air Canada

Find Deal

Τετ, Οκτ 29 - Σαβ, Νοε 1

4:17 pm - 6:30 amMCI-BNE

22h 13m1 stop

9:40 am - 11:34 amBNE-MCI

17h 54m1 stop

$1,041Qantas Airways

Find Deal

Σαβ, Δεκ 13 - Σαβ, Δεκ 20

9:40 am - 5:00 amMCI-BNE

27h 20m2 stops

7:25 pm - 11:25 pmBNE-MCI

20h 00m2 stops

$1,049American Airlines

Find Deal

Σαβ, Νοε 22 - Παρ, Δεκ 26

11:29 am - 5:00 amMCI-BNE

25h 31m2 stops

9:40 am - 6:09 pmBNE-MCI

24h 29m1 stop

$1,056American Airlines

Find Deal

Σαβ, Νοε 22 - Παρ, Δεκ 26

3:40 pm - 6:35 amMCI-SYD

23h 55m1 stop

10:25 am - 2:47 pmSYD-MCI

20h 22m1 stop

$1,074Delta

Find Deal

Τετ, Σεπ 24 - Τετ, Οκτ 15

10:19 am - 6:35 amMCI-SYD

29h 16m2 stops

9:25 am - 5:37 pmSYD-MCI

23h 12m2 stops

$1,079Delta

Find Deal

Κυρ, Σεπ 14 - Κυρ, Σεπ 21

Air Canada flights from Missouri to Australia

Our best Air Canada deals on Missouri to Australia flight tickets

Air Canada

Aug 13

MCI6:00 amKansas City

34h 20m

2 stops

SYD7:20 amSydney Kingsford Smith

Aug 19

SYD9:20 amSydney Kingsford Smith

29h 07m

2 stops

MCI11:27 pmKansas City

$999

Find similar

Air Canada

Oct 29

MCI1:47 pmKansas City

26h 48m

2 stops

SYD8:35 amSydney Kingsford Smith

Nov 1

SYD10:20 amSydney Kingsford Smith

21h 45m

2 stops

MCI4:05 pmKansas City

$1,025

Find similar

Air Canada

Oct 31

MCI1:47 pmKansas City

26h 48m

2 stops

SYD8:35 amSydney Kingsford Smith

Nov 7

SYD11:20 amSydney Kingsford Smith

42h 20m

2 stops

MCI12:40 pmKansas City

$1,032

Find similar

Qantas Airways flights from Missouri to Australia

Our best Qantas Airways deals on Missouri to Australia flight tickets

Qantas Airways

Sep 3

MCI6:26 pmKansas City

21h 29m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 17

SYD12:10 pmSydney Kingsford Smith

21h 55m

1 stop

MCI7:05 pmKansas City

$1,022

Find similar

Qantas Airways

Dec 13

MCI4:17 pmKansas City

22h 13m

1 stop

BNE6:30 amBrisbane

Dec 20

BNE9:40 amBrisbane

17h 54m

1 stop

MCI11:34 amKansas City

$1,041

Find similar

Qantas Airways

Nov 22

MCI5:35 pmKansas City

20h 55m

1 stop

BNE6:30 amBrisbane

Dec 26

BNE9:40 amBrisbane

22h 17m

1 stop

MCI3:57 pmKansas City

$1,047

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Τετ 10/29

1:35 pm-8:35 am

2 stops27h 00m

Sydney Kingsford Smith

Σαβ 11/15

11:20 am-3:29 pm

2 stops45h 09m

$968

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Τετ 10/29

4:55 pm-8:35 am

2 stops23h 40m

Sydney Kingsford Smith

Σαβ 11/15

11:20 am-3:29 pm

1 stop45h 09m

$969

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Τετ 8/13

6:00 am-7:20 am

2 stops34h 20m

Sydney Kingsford Smith

Τρι 8/19

9:20 am-11:27 pm

2 stops29h 07m

$999

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Τετ 9/3

6:26 pm-6:55 am

1 stop21h 29m

Sydney Kingsford Smith

Τετ 9/17

12:10 pm-7:05 pm

1 stop21h 55m

$1,022

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Τετ 10/29

1:47 pm-8:35 am

2 stops26h 48m

Sydney Kingsford Smith

Σαβ 11/1

10:20 am-4:05 pm

2 stops21h 45m

$1,025

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Σαβ 12/13

4:17 pm-6:30 am

1 stop22h 13m

Brisbane

Σαβ 12/20

9:40 am-11:34 am

1 stop17h 54m

$1,041

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Σαβ 11/22

9:40 am-5:00 am

2 stops27h 20m

Brisbane

Παρ 12/26

7:25 pm-11:25 pm

2 stops20h 00m

$1,049

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Σαβ 11/22

11:29 am-5:00 am

2 stops25h 31m

Brisbane

Παρ 12/26

9:40 am-6:09 pm

1 stop24h 29m

$1,056

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Τετ 9/24

3:40 pm-6:35 am

1 stop23h 55m

Sydney Kingsford Smith

Τετ 10/15

10:25 am-2:47 pm

1 stop20h 22m

$1,074

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Κυρ 9/14

10:19 am-6:35 am

2 stops29h 16m

Sydney Kingsford Smith

Κυρ 9/21

9:25 am-5:37 pm

2 stops23h 12m

$1,079

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 $1,241. 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 $1,360.

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.

How far in advance should I book a flight to Australia?

You are more likely to see cheaper flights to Australia from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,454 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Missouri for as low as $1,272 on momondo.

Can stopping save me money on Missouri to Australia flights?

You could potentially save up to 36% 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

Best Price Found	$561
Fastest flight time	20h 14m
Direct flights	None
Airports in Australia	5 airports

The best one-way flight to Australia from Missouri in the past 72 hours is $561. The best round-trip flight deal from Missouri to Australia found on momondo in the last 72 hours is $968.

The fastest flight from Missouri to Australia takes 20h 14m

There are no direct flights from Missouri to Australia. Popular non-direct routes for this connection are Lambert-St Louis Airport - Sydney Kingsford Smith Airport, Kansas City Airport - Sydney Kingsford Smith Airport and Kansas City Airport - Brisbane Airport.

There are 5 airports near Australia: Melbourne Avalon (AVV), Melbourne (MEL), Brisbane (BNE), Adelaide (ADL), Sydney Kingsford Smith (SYD)

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 August 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
Qantas Airways	PriceFrom $687	Free Cancellation	Rating 7.5 887 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $822	Free Cancellation	Rating 7.4 8,904 reviews	Search United Airlines flights
Fiji Airways	PriceFrom $887	Free Cancellation	Rating 8.0 202 reviews	Search Fiji Airways flights
Air Canada	PriceFrom $912	Free Cancellation	Rating 7.1 9,855 reviews	Search Air Canada flights
Delta	PriceFrom $981	Free Cancellation	Rating 8.0 7,983 reviews	Search Delta flights
American Airlines	PriceFrom $1,044	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air New Zealand	PriceFrom $1,173	Free Cancellation	Rating 7.9 501 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.