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

United Airlines, Fiji Airways, and American Airlines are the most popular carriers operating from Missouri to Australia

How long is the flight from Missouri to Australia?

The flight from Missouri to Australia depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Kansas City (a popular airport in Missouri) to Sydney (the most popular airport in Australia), then the flight time is 21h 25m on average. If you fly from St. Louis (another popular airport in Missouri) to Sydney, then the average flight time is 25h 33m.

When did momondo last update prices for flights from Missouri to Australia?

Prices for flights from Missouri to Australia were last updated today.

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

As of August 2025, there is 1 operator 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$866 Cheap Flights from Missouri to Australia in 2025

1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Missouri to Australia

Round-trip

One-way

Last minute

Cheap return flights

16:05 - 09:35STL-SYD

48h 30m2 stops

11:20 - 15:29SYD-STL

45h 09m2 stops

$1,483Air Canada

Find Deal

Mon, 17 Nov - Sat, 22 Nov

13:30 - 09:35STL-SYD

27h 05m2 stops

11:20 - 15:29SYD-STL

45h 09m2 stops

$1,554

Find Deal

Sun, 1 Feb - Sun, 15 Feb

17:57 - 10:55STL-SYD

23h 58m2 stops

14:20 - 16:07SYD-STL

18h 47m1 stop

$1,671Qantas Airways

Find Deal

Fri, 28 Nov - Sun, 14 Dec

17:35 - 07:30MCI-BNE

21h 55m1 stop

11:40 - 20:04BNE-MCI

48h 24m2 stops

$1,674United Airlines

Find Deal

Sat, 22 Nov - Fri, 26 Dec

17:35 - 07:30MCI-BNE

21h 55m1 stop

11:40 - 20:04BNE-MCI

48h 24m2 stops

$1,676United Airlines

Find Deal

Sat, 22 Nov - Fri, 26 Dec

13:20 - 06:55STL-SYD

24h 35m1 stop

06:00 - 16:40SYD-STL

27h 40m2 stops

$1,683Qantas Airways

Find Deal

Wed, 5 Nov - Sun, 23 Nov

13:12 - 06:55MCI-SYD

26h 43m1 stop

12:10 - 21:04SYD-MCI

23h 54m1 stop

$1,858American Airlines

Find Deal

Thu, 18 Sep - Thu, 25 Sep

15:03 - 06:55MCI-SYD

23h 52m1 stop

14:20 - 23:07SYD-MCI

25h 47m1 stop

$1,869American Airlines

Find Deal

Fri, 31 Oct - Fri, 7 Nov

15:40 - 06:35MCI-SYD

23h 55m1 stop

09:25 - 14:43SYD-MCI

20h 18m1 stop

$1,893Delta

Find Deal

Mon, 15 Sep - Tue, 23 Sep

18:15 - 08:30STL-SYD

45h 15m2 stops

10:40 - 00:37SYD-STL

30h 57m2 stops

$2,133Delta

Find Deal

Sat, 22 Nov - Sun, 7 Dec

Delta flights from Missouri to Australia

Our best Delta deals on Missouri to Australia flight tickets

Delta

15 Sept

MCI15:40Kansas City

23h 55m

1 stop

SYD06:35Sydney Kingsford Smith

23 Sept

SYD09:25Sydney Kingsford Smith

20h 18m

1 stop

MCI14:43Kansas City

$1,893

Find similar

Delta

22 Nov

STL18:15Lambert-St Louis

45h 15m

2 stops

SYD08:30Sydney Kingsford Smith

7 Dec

SYD10:40Sydney Kingsford Smith

30h 57m

2 stops

STL00:37Lambert-St Louis

$2,133

Find similar

Delta

11 Aug

MCI15:42Kansas City

23h 53m

1 stop

SYD06:35Sydney Kingsford Smith

23 Aug

SYD09:25Sydney Kingsford Smith

27h 12m

1 stop

MCI21:37Kansas City

$4,766

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

5 Nov

STL08:20Lambert-St Louis

44h 25m

2 stops

SYD21:45Sydney Kingsford Smith

23 Nov

SYD09:55Sydney Kingsford Smith

29h 04m

2 stops

STL21:59Lambert-St Louis

$1,910

Find similar

Air New Zealand

28 Nov

STL06:15Lambert-St Louis

33h 30m

2 stops

SYD08:45Sydney Kingsford Smith

14 Dec

SYD11:45Sydney Kingsford Smith

27h 13m

2 stops

STL21:58Lambert-St Louis

$1,946

Find similar

Air New Zealand

24 Nov

STL16:35Lambert-St Louis

23h 10m

2 stops

SYD08:45Sydney Kingsford Smith

8 Dec

SYD11:45Sydney Kingsford Smith

39h 19m

2 stops

STL10:04Lambert-St Louis

$1,969

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 17/11

16:05-09:35

2 stops48h 30m

Sydney Kingsford Smith

Sat 22/11

11:20-15:29

2 stops45h 09m

$1,483

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 1/2

13:30-09:35

2 stops27h 05m

Sydney Kingsford Smith

Sun 15/2

11:20-15:29

2 stops45h 09m

$1,554

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 28/11

17:57-10:55

2 stops23h 58m

Sydney Kingsford Smith

Sun 14/12

14:20-16:07

1 stop18h 47m

$1,671

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Sat 22/11

17:35-07:30

1 stop21h 55m

Brisbane

Fri 26/12

11:40-20:04

2 stops48h 24m

$1,674

Kansas CityBrisbane

MCI - BNE

MCIBNE

Kansas City

Sat 22/11

17:35-07:30

1 stop21h 55m

Brisbane

Fri 26/12

11:40-20:04

2 stops48h 24m

$1,676

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 5/11

13:20-06:55

1 stop24h 35m

Sydney Kingsford Smith

Sun 23/11

06:00-16:40

2 stops27h 40m

$1,683

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Thu 18/9

13:12-06:55

1 stop26h 43m

Sydney Kingsford Smith

Thu 25/9

12:10-21:04

1 stop23h 54m

$1,858

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Fri 31/10

15:03-06:55

1 stop23h 52m

Sydney Kingsford Smith

Fri 7/11

14:20-23:07

1 stop25h 47m

$1,869

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Mon 15/9

15:40-06:35

1 stop23h 55m

Sydney Kingsford Smith

Tue 23/9

09:25-14:43

1 stop20h 18m

$1,893

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 22/11

18:15-08:30

2 stops45h 15m

Sydney Kingsford Smith

Sun 7/12

10:40-00:37

2 stops30h 57m

$2,133

Flights are sorted by cheapest return 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?

In general, October is the cheapest month to fly from Missouri to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,989. If you don’t want to visit Australia in October, then you should wait until September to fly from Missouri, when ticket prices are also cheap, with an average price of $2,063.

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

According to our data, the cheapest time of day to fly to Australia is in the afternoon. momondo users have found flights departing from Missouri to Australia in the afternoon for as low as $1,935. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the morning, with an average ticket price of $2,724. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $2,243 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Missouri for as low as $1,929 on momondo.

Can stopping save me money on Missouri to Australia flights?

You could potentially save up to 7% 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	$866
Fastest flight time	19h 59m
Direct flights	None
Airports in Australia	5 airports

The best one-way flight to Australia from Missouri in the past 72 hours is $866. The best return flight deal from Missouri to Australia found on momondo in the last 72 hours is $1,483.

The fastest flight from Missouri to Australia takes 19h 59m

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, Lambert-St Louis Airport - Melbourne Airport and Lambert-St Louis 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 were last updated today.
How many operators does momondo search for flights from Missouri to Australia?
As of August 2025, there is 1 operator 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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 $1,587	Free cancellation	Rating 7.4 8,912 reviews		Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Missouri to Australia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Australia that suits you.

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

All flight searches from Missouri to Australia on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Missouri to Australia.

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

If you are not ready to book a flight from Missouri to Australia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Australia and let you know when they change.