How long does it take to fly to Sydney?

If you’re flying from a popular airport in Missouri, such as Kansas City or St. Louis, and flying into Sydney, then you can expect flight times to average 20h 42m and 25h 30m, respectively.

What is the cheapest airline that flies from Missouri to Sydney Kingsford Smith?

Qantas Airways, Air Canada, and United Airlines are the most popular carriers operating from Missouri to Sydney Kingsford Smith

When did momondo last update prices for flights from Missouri to Sydney Kingsford Smith Airport?

Prices for flights from Missouri to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How old do you have to be to fly from Missouri to Sydney Kingsford Smith Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Missouri to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The travel and health documents required for your trip to Sydney Kingsford Smith Airport 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 Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$849 Cheap Flights from Missouri to Sydney in 2025/26

1 adult

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Find the cheapest flights from Missouri to Sydney

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07:04 - 07:35

STL

SYD

55h 31m2 stops

11:20 - 23:59

SYD

STL

29h 39m1 stop

$1,419Qantas Airways

Sat, 31 Jan - Sat, 7 Feb

07:04 - 07:35

STL

SYD

55h 31m2 stops

17:45 - 23:48

SYD

STL

23h 03m1 stop

$1,430Qantas Airways

Sat, 7 Feb - Sat, 21 Feb

14:45 - 09:35

STL

SYD

25h 50m2 stops

11:20 - 15:29

SYD

STL

45h 09m2 stops

$1,458Multiple Airlines

Sun, 1 Feb - Sun, 8 Feb

06:30 - 20:50

STL

SYD

45h 20m2 stops

17:45 - 23:48

SYD

STL

23h 03m1 stop

$1,498Qantas Airways

Thu, 19 Feb - Sun, 1 Mar

13:56 - 12:15

MCI

SYD

29h 19m2 stops

14:05 - 16:47

SYD

MCI

19h 42m1 stop

$1,519Qantas Airways

Mon, 2 Feb - Sun, 8 Feb

06:38 - 09:00

STL

SYD

34h 22m1 stop

19:15 - 17:13

SYD

STL

37h 58m2 stops

$1,520Qantas Airways

Sun, 15 Mar - Tue, 24 Mar

16:05 - 09:35

STL

SYD

48h 30m2 stops

11:20 - 15:29

SYD

STL

45h 09m2 stops

$1,527Air Canada

Sat, 31 Jan - Sat, 7 Feb

14:50 - 07:20

STL

SYD

25h 30m2 stops

09:20 - 15:24

SYD

STL

45h 04m2 stops

$1,555Multiple Airlines

Mon, 6 Apr - Sun, 19 Apr

16:05 - 07:20

STL

SYD

48h 15m2 stops

09:20 - 15:24

SYD

STL

45h 04m2 stops

$1,558Air Canada

Sun, 5 Apr - Sun, 19 Apr

13:56 - 06:55

MCI

SYD

23h 59m1 stop

11:20 - 16:47

SYD

MCI

22h 27m2 stops

$1,721American Airlines

Mon, 26 Jan - Sun, 8 Feb

Qantas Airways flights from Missouri to Sydney

Our best Qantas Airways deals on Missouri to Sydney flight tickets

Qantas Airways

31 Jan

STL07:04Lambert-St Louis

55h 31m

2 stops

SYD07:35Sydney Kingsford Smith

7 Feb

SYD11:20Sydney Kingsford Smith

29h 39m

1 stop

STL23:59Lambert-St Louis

$1,419

Find similar

Qantas Airways

7 Feb

STL07:04Lambert-St Louis

55h 31m

2 stops

SYD07:35Sydney Kingsford Smith

21 Feb

SYD17:45Sydney Kingsford Smith

23h 03m

1 stop

STL23:48Lambert-St Louis

$1,430

Find similar

Qantas Airways

19 Feb

STL06:30Lambert-St Louis

45h 20m

2 stops

SYD20:50Sydney Kingsford Smith

1 Mar

SYD17:45Sydney Kingsford Smith

23h 03m

1 stop

STL23:48Lambert-St Louis

$1,498

Find similar

Air Canada flights from Missouri to Sydney

Our best Air Canada deals on Missouri to Sydney flight tickets

Air Canada

31 Jan

STL16:05Lambert-St Louis

48h 30m

2 stops

SYD09:35Sydney Kingsford Smith

7 Feb

SYD11:20Sydney Kingsford Smith

45h 09m

2 stops

STL15:29Lambert-St Louis

$1,526

Find similar

Air Canada

5 Apr

STL16:05Lambert-St Louis

48h 15m

2 stops

SYD07:20Sydney Kingsford Smith

19 Apr

SYD09:20Sydney Kingsford Smith

45h 04m

2 stops

STL15:24Lambert-St Louis

$1,558

Find similar

Air Canada

2 Feb

MCI13:42Kansas City

26h 53m

2 stops

SYD09:35Sydney Kingsford Smith

8 Feb

SYD11:20Sydney Kingsford Smith

21h 48m

2 stops

MCI16:08Kansas City

$1,560

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 31/1

07:04-07:35

2 stops55h 31m

Sydney Kingsford Smith

Sat 7/2

11:20-23:59

1 stop29h 39m

$1,419

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 7/2

07:04-07:35

2 stops55h 31m

Sydney Kingsford Smith

Sat 21/2

17:45-23:48

1 stop23h 03m

$1,430

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 1/2

14:45-09:35

2 stops25h 50m

Sydney Kingsford Smith

Sun 8/2

11:20-15:29

2 stops45h 09m

$1,458

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 19/2

06:30-20:50

2 stops45h 20m

Sydney Kingsford Smith

Sun 1/3

17:45-23:48

1 stop23h 03m

$1,498

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Mon 2/2

13:56-12:15

2 stops29h 19m

Sydney Kingsford Smith

Sun 8/2

14:05-16:47

1 stop19h 42m

$1,519

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 15/3

06:38-09:00

1 stop34h 22m

Sydney Kingsford Smith

Tue 24/3

19:15-17:13

2 stops37h 58m

$1,520

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 31/1

16:05-09:35

2 stops48h 30m

Sydney Kingsford Smith

Sat 7/2

11:20-15:29

2 stops45h 09m

$1,526

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 6/4

14:50-07:20

2 stops25h 30m

Sydney Kingsford Smith

Sun 19/4

09:20-15:24

2 stops45h 04m

$1,555

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 5/4

16:05-07:20

2 stops48h 15m

Sydney Kingsford Smith

Sun 19/4

09:20-15:24

2 stops45h 04m

$1,558

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Mon 26/1

13:56-06:55

1 stop23h 59m

Sydney Kingsford Smith

Sun 8/2

11:20-16:47

2 stops22h 27m

$1,721

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 Sydney

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 Sydney?

The month of March is, on average, the cheapest month to fly to Sydney from Missouri, with most prices found around $1,906. If you aren’t able to travel to Sydney during the month of March, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,944.

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

Our data shows that Wednesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $2,154. The most expensive day to fly to Sydney is Monday, with ticket prices averaging around $2,262.

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

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from Missouri to Sydney in the afternoon for as low as $2,184. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $2,747 on average. Flights to Sydney from Missouri in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Can stopping save me money on Missouri to Sydney flights?

You could potentially save up to 12% on your flight if you consider stops on a Missouri to Sydney flight.

Cheap Missouri to Sydney flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Sydney

Fastest flight time	20h 42m
Direct flights	None

The fastest flight from Missouri to Sydney takes 20h 42m

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

Search flight deals

When did momondo last update prices for flights from Missouri to Sydney Kingsford Smith Airport?
Prices for flights from Missouri to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How old do you have to be to fly from Missouri to Sydney Kingsford Smith Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Missouri to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The travel and health documents required for your trip to Sydney Kingsford Smith Airport 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 Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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Terrigal

Penrith

Katoomba

Lithgow

Leura

Manly

Bondi Beach

Coogee

Cronulla

Randwick

Charlestown

Newport

Swansea

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Missouri to Sydney . Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Sydney from Missouri which offer a flexible booking policy as well as other useful filters and features.

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

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 Sydney.

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

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Missouri and alert you when they change.