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

Air Canada, Qantas Airways, and United Airlines 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 Kansas City and flying into Sydney (one of the most popular routes), then the duration is 21h 27m on average. Another popular route from Missouri to Australia is flying from St. Louis to Sydney, which will take roughly 21h 44m. 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 45% 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.

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 January 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.

$514 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.

7:04 am - 9:00 am

STL

SYD

32h 56m1 stop

7:05 am - 11:59 pm

SYD

STL

33h 54m2 stops

$918Qantas Airways

Tue, Feb 10 - Tue, Feb 17

6:38 am - 5:00 am

STL

BNE

30h 22m1 stop

6:30 pm - 3:28 pm

BNE

STL

36h 58m2 stops

$936Qantas Airways

Thu, Feb 12 - Thu, Feb 19

4:30 pm - 8:45 am

STL

BNE

24h 15m2 stops

10:45 am - 8:26 pm

BNE

STL

25h 41m2 stops

$955Multiple Airlines

Sat, Feb 14 - Sat, Feb 21

4:05 pm - 8:45 am

STL

BNE

48h 40m2 stops

10:45 am - 3:29 pm

BNE

STL

44h 44m2 stops

$963Air Canada

Wed, Feb 18 - Wed, Feb 25

1:02 pm - 5:00 am

MCI

MEL

22h 58m1 stop

4:05 pm - 6:50 pm

MEL

MCI

19h 45m1 stop

$974Multiple Airlines

Sat, Feb 7 - Sat, Feb 14

1:42 pm - 10:00 am

MCI

MEL

27h 18m2 stops

1:00 pm - 6:37 pm

MEL

MCI

22h 37m1 stop

$997United Airlines

Sat, Feb 7 - Sat, Feb 14

1:42 pm - 10:00 am

MCI

MEL

27h 18m2 stops

10:30 am - 4:19 pm

MEL

MCI

21h 49m2 stops

$1,002United Airlines

Mon, Feb 9 - Tue, Mar 10

8:11 pm - 7:00 am

MCI

MEL

42h 49m2 stops

9:10 am - 2:54 pm

MEL

MCI

21h 44m1 stop

$1,009Delta

Thu, Mar 12 - Sun, Mar 22

4:30 pm - 8:45 am

STL

BNE

24h 15m2 stops

10:45 am - 3:29 pm

BNE

STL

44h 44m2 stops

$1,039Air Canada

Sat, Feb 21 - Tue, Feb 24

5:59 pm - 7:00 am

STL

MEL

45h 01m2 stops

9:10 am - 5:05 pm

MEL

STL

23h 55m2 stops

$1,169Delta

Sun, Mar 8 - Wed, Mar 18

Qantas Airways flights from Missouri to Australia

Our best Qantas Airways deals on Missouri to Australia flight tickets

Qantas Airways

Feb 10

STL7:04 amLambert-St Louis

32h 56m

1 stop

SYD9:00 amSydney Kingsford Smith

Feb 17

SYD7:05 amSydney Kingsford Smith

33h 54m

2 stops

STL11:59 pmLambert-St Louis

$918

Find similar

Qantas Airways

Feb 9

STL7:04 amLambert-St Louis

33h 26m

1 stop

MEL9:30 amMelbourne

Mar 3

MEL6:45 amMelbourne

34h 14m

2 stops

STL11:59 pmLambert-St Louis

$933

Find similar

Qantas Airways

Feb 12

STL6:38 amLambert-St Louis

30h 22m

1 stop

BNE5:00 amBrisbane

Feb 19

BNE6:30 pmBrisbane

36h 58m

2 stops

STL3:28 pmLambert-St Louis

$936

Find similar

Air New Zealand flights from Missouri to Australia

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

Air New Zealand

Feb 12

MCI10:15 amKansas City

29h 30m

2 stops

SYD8:45 amSydney Kingsford Smith

Feb 26

SYD9:55 amSydney Kingsford Smith

29h 45m

2 stops

MCI10:40 pmKansas City

$1,333

Find similar

Air New Zealand

Mar 9

STL6:51 amLambert-St Louis

34h 34m

2 stops

MEL9:25 amMelbourne

Mar 15

MEL6:50 pmMelbourne

43h 26m

2 stops

STL10:16 pmLambert-St Louis

$1,366

Find similar

Air New Zealand

Apr 27

MCI4:29 pmKansas City

25h 16m

2 stops

SYD8:45 amSydney Kingsford Smith

May 3

SYD6:55 pmSydney Kingsford Smith

42h 34m

2 stops

MCI10:29 pmKansas City

$1,389

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 2/10

7:04 am-9:00 am

1 stop32h 56m

Sydney Kingsford Smith

Tue 2/17

7:05 am-11:59 pm

2 stops33h 54m

$918

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Thu 2/12

6:38 am-5:00 am

1 stop30h 22m

Brisbane

Thu 2/19

6:30 pm-3:28 pm

2 stops36h 58m

$936

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 2/14

4:30 pm-8:45 am

2 stops24h 15m

Brisbane

Sat 2/21

10:45 am-8:26 pm

2 stops25h 41m

$955

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Wed 2/18

4:05 pm-8:45 am

2 stops48h 40m

Brisbane

Wed 2/25

10:45 am-3:29 pm

2 stops44h 44m

$963

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Sat 2/7

1:02 pm-5:00 am

1 stop22h 58m

Melbourne

Sat 2/14

4:05 pm-6:50 pm

1 stop19h 45m

$974

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Sat 2/7

1:42 pm-10:00 am

2 stops27h 18m

Melbourne

Sat 2/14

1:00 pm-6:37 pm

1 stop22h 37m

$997

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Mon 2/9

1:42 pm-10:00 am

2 stops27h 18m

Melbourne

Tue 3/10

10:30 am-4:19 pm

2 stops21h 49m

$1,002

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Thu 3/12

8:11 pm-7:00 am

2 stops42h 49m

Melbourne

Sun 3/22

9:10 am-2:54 pm

1 stop21h 44m

$1,009

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 2/21

4:30 pm-8:45 am

2 stops24h 15m

Brisbane

Tue 2/24

10:45 am-3:29 pm

2 stops44h 44m

$1,039

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Sun 3/8

5:59 pm-7:00 am

2 stops45h 01m

Melbourne

Wed 3/18

9:10 am-5:05 pm

2 stops23h 55m

$1,169

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.

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 $1,453 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 $948 on momondo.

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	21h 27m
Direct flights	None

The fastest flight from Missouri to Australia takes 21h 27m

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 January 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 $822	Free Cancellation	Rating 7.4 9,131 reviews	Search United Airlines flights
Air Canada	PriceFrom $897	Free Cancellation	Rating 7.1 10,571 reviews	Search Air Canada flights
American Airlines	PriceFrom $973	Free Cancellation	Rating 7.2 11,071 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $975	Free Cancellation	Rating 7.5 960 reviews	Search Qantas Airways flights
Fiji Airways	PriceFrom $1,132	Free Cancellation	Rating 8.0 212 reviews	Search Fiji Airways flights
Delta	PriceFrom $1,160	Free Cancellation	Rating 7.9 8,017 reviews	Search Delta 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.