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 20h 32m on average. Another popular route from Missouri to Australia is flying from Kansas City to Sydney, which will take roughly 23h 34m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Australia?

Qantas Airways, United Airlines and American Airlines are the top three most popular airlines that fly to Australia from Missouri according to our data. Qantas Airways is the first choice among our users, with 34% 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, Delta, and United Airlines 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 June 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.

$586 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.

12:43 pm - 6:45 am

STL

MEL

26h 02m

2 stops

11:15 pm - 8:58 am

MEL

STL

26h 43m

2 stops

$1,086American Airlines

Tue, Oct 20 - Tue, Nov 3

11:31 am - 6:45 am

MCI

MEL

27h 14m

2 stops

11:15 pm - 8:26 am

MEL

MCI

25h 11m

2 stops

$1,086American Airlines

Mon, Oct 12 - Fri, Oct 30

7:59 pm - 8:15 am

MCI

MEL

21h 16m

1 stop

10:55 am - 11:25 pm

MEL

MCI

27h 30m

2 stops

$1,092United Airlines

Tue, Jun 30 - Thu, Jul 9

7:23 pm - 8:15 am

STL

MEL

21h 52m

1 stop

10:55 am - 6:17 pm

MEL

STL

22h 22m

1 stop

$1,092Multiple Airlines

Tue, Jun 30 - Fri, Jul 31

6:01 am - 8:15 am

STL

MEL

35h 14m

2 stops

10:55 am - 6:17 pm

MEL

STL

22h 22m

1 stop

$1,093United Airlines

Tue, Jun 30 - Fri, Jul 31

3:16 pm - 8:15 am

MCI

MEL

25h 59m

2 stops

9:30 am - 6:27 pm

MEL

MCI

23h 57m

2 stops

$1,096Air New Zealand

Tue, Jun 30 - Fri, Jul 10

1:13 pm - 8:15 am

STL

MEL

28h 02m

2 stops

10:55 am - 9:26 pm

MEL

STL

25h 31m

2 stops

$1,096Multiple Airlines

Tue, Jun 30 - Fri, Jul 31

6:30 am - 9:30 am

STL

MEL

35h 00m

1 stop

11:15 pm - 11:42 pm

MEL

STL

41h 27m

1 stop

$1,097Qantas Airways

Tue, Oct 27 - Wed, Nov 11

5:11 pm - 6:30 am

STL

BNE

22h 19m

1 stop

9:15 am - 4:40 pm

BNE

STL

23h 25m

1 stop

$1,266Qantas Airways

Fri, Oct 30 - Fri, Nov 20

8:42 am - 6:55 am

STL

SYD

31h 13m

1 stop

10:20 am - 6:39 pm

SYD

STL

23h 19m

1 stop

$1,331Air New Zealand

Sun, Aug 16 - Mon, Aug 24

Delta flights from Missouri to Australia

Our best Delta deals on Missouri to Australia flight tickets

Delta

Jul 3

MCI1:20 pmKansas City

26h 30m

2 stops

SYD6:50 amSydney Kingsford Smith

Jul 10

SYD9:15 amSydney Kingsford Smith

28h 43m

2 stops

MCI10:58 pmKansas City

$1,265

Delta

Jun 29

MCI6:00 pmKansas City

22h 50m

2 stops

MEL7:50 amMelbourne

Jul 5

MEL10:00 amMelbourne

22h 06m

2 stops

MCI5:06 pmKansas City

$1,321

Delta

Jul 3

MCI7:26 amKansas City

33h 24m

1 stop

MEL7:50 amMelbourne

Jul 8

MEL10:00 amMelbourne

19h 50m

1 stop

MCI2:50 pmKansas City

$1,325

Air Canada flights from Missouri to Australia

Our best Air Canada deals on Missouri to Australia flight tickets

Air Canada

Aug 9

MCI6:00 amKansas City

34h 20m

2 stops

SYD7:20 amSydney Kingsford Smith

Aug 13

SYD9:20 amSydney Kingsford Smith

40h 31m

2 stops

MCI10:51 amKansas City

$1,177

Air Canada

Aug 8

MCI6:41 pmKansas City

45h 39m

2 stops

SYD7:20 amSydney Kingsford Smith

Aug 12

SYD9:20 amSydney Kingsford Smith

40h 31m

2 stops

MCI10:51 amKansas City

$1,228

Air Canada

Aug 8

MCI6:00 amKansas City

58h 20m

3 stops

SYD7:20 amSydney Kingsford Smith

Aug 12

SYD9:20 amSydney Kingsford Smith

42h 17m

2 stops

MCI12:37 pmKansas City

$1,230

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 10/20

12:43 pm-6:45 am

2 stops26h 02m

Melbourne

Tue 11/3

11:15 pm-8:58 am

2 stops26h 43m

$1,086

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Mon 10/12

11:31 am-6:45 am

2 stops27h 14m

Melbourne

Fri 10/30

11:15 pm-8:26 am

2 stops25h 11m

$1,086

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Tue 6/30

7:59 pm-8:15 am

1 stop21h 16m

Melbourne

Thu 7/9

10:55 am-11:25 pm

2 stops27h 30m

$1,092

Quickest round-trip

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 6/30

7:23 pm-8:15 am

1 stop21h 52m

Melbourne

Fri 7/31

10:55 am-6:17 pm

1 stop22h 22m

$1,092

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 6/30

6:01 am-8:15 am

2 stops35h 14m

Melbourne

Fri 7/31

10:55 am-6:17 pm

1 stop22h 22m

$1,093

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Tue 6/30

3:16 pm-8:15 am

2 stops25h 59m

Melbourne

Fri 7/10

9:30 am-6:27 pm

2 stops23h 57m

$1,096

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 6/30

1:13 pm-8:15 am

2 stops28h 02m

Melbourne

Fri 7/31

10:55 am-9:26 pm

2 stops25h 31m

$1,096

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 10/27

6:30 am-9:30 am

1 stop35h 00m

Melbourne

Wed 11/11

11:15 pm-11:42 pm

1 stop41h 27m

$1,097

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Fri 10/30

5:11 pm-6:30 am

1 stop22h 19m

Brisbane

Fri 11/20

9:15 am-4:40 pm

1 stop23h 25m

$1,266

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 8/16

8:42 am-6:55 am

1 stop31h 13m

Sydney Kingsford Smith

Mon 8/24

10:20 am-6:39 pm

1 stop23h 19m

$1,331

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 May is, on average, the cheapest month to fly to Australia from Missouri, with most prices found around $310. If you aren’t able to travel during the month of May, then book flights to Australia from Missouri during December instead. Flights to Australia in December, while not as cheap as those in May, still average around $509.

Can stopping save me money on Missouri to Australia flights?

You could potentially save up to 12% 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	19h 31m
Direct flights	None

The fastest flight from Missouri to Australia takes 19h 31m

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

Search flight deals

Frequently asked questions about flying 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 June 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
Qantas Airways	PriceFrom $857	Free Cancellation	Rating 7.5 1,044 reviews	Search Qantas Airways flights
Fiji Airways	PriceFrom $887	Free Cancellation	Rating 8.1 243 reviews	Search Fiji Airways flights
Air Canada	PriceFrom $894	Free Cancellation	Rating 7.1 11,129 reviews	Search Air Canada flights
United Airlines	PriceFrom $917	Free Cancellation	Rating 7.4 9,779 reviews	Search United Airlines flights
Delta	PriceFrom $917	Free Cancellation	Rating 7.8 8,396 reviews	Search Delta flights
American Airlines	PriceFrom $962	Free Cancellation	Rating 7.1 11,652 reviews	Search American Airlines 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.