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 50m and 25h 10m, respectively.

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

Qantas Airways and American 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.

$945 Cheap Flights from Missouri to Sydney in 2026

1 adult

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Find the cheapest flights from Missouri to Sydney

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One-way

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18:18 - 20:50

STL

SYD

33h 32m

2 stops

11:20 - 23:58

SYD

STL

28h 38m

1 stop

$1,292Qantas Airways

Tue, 3 Mar - Tue, 10 Mar

18:50 - 20:50

STL

SYD

34h 00m

2 stops

11:20 - 23:58

SYD

STL

28h 38m

1 stop

$1,294Qantas Airways

Mon, 9 Mar - Mon, 16 Mar

18:50 - 20:50

STL

SYD

34h 00m

2 stops

18:50 - 23:58

SYD

STL

21h 08m

1 stop

$1,305Qantas Airways

Mon, 23 Mar - Mon, 30 Mar

06:38 - 20:50

STL

SYD

45h 12m

2 stops

17:45 - 23:59

SYD

STL

23h 14m

1 stop

$1,319Qantas Airways

Thu, 26 Feb - Thu, 5 Mar

18:18 - 20:50

STL

SYD

33h 32m

2 stops

11:20 - 23:58

SYD

STL

28h 38m

1 stop

$1,329Qantas Airways

Wed, 4 Mar - Wed, 11 Mar

06:38 - 09:00

STL

SYD

33h 22m

1 stop

17:50 - 15:57

SYD

STL

38h 07m

2 stops

$1,520Qantas Airways

Fri, 6 Mar - Fri, 13 Mar

07:30 - 07:20

STL

SYD

32h 50m

2 stops

09:20 - 12:06

SYD

STL

41h 46m

2 stops

$1,586Air Canada

Wed, 20 May - Mon, 25 May

07:30 - 07:20

STL

SYD

32h 50m

1 stop

09:20 - 12:06

SYD

STL

41h 46m

1 stop

$1,627Multiple Airlines

Wed, 20 May - Mon, 25 May

16:05 - 09:35

STL

SYD

48h 30m

2 stops

10:20 - 15:29

SYD

STL

45h 09m

2 stops

$1,640Air Canada

Wed, 4 Mar - Wed, 11 Mar

16:05 - 09:35

STL

SYD

48h 30m

2 stops

10:20 - 15:29

SYD

STL

45h 09m

2 stops

$1,642Air Canada

Wed, 4 Mar - Tue, 10 Mar

Qantas Airways flights from Missouri to Sydney

Our best Qantas Airways deals on Missouri to Sydney flight tickets

Qantas Airways

3 Mar

STL18:18Lambert-St Louis

33h 32m

2 stops

SYD20:50Sydney Kingsford Smith

10 Mar

SYD11:20Sydney Kingsford Smith

28h 38m

1 stop

STL23:58Lambert-St Louis

$1,292

Qantas Airways

9 Mar

STL18:50Lambert-St Louis

34h 00m

2 stops

SYD20:50Sydney Kingsford Smith

16 Mar

SYD11:20Sydney Kingsford Smith

28h 38m

1 stop

STL23:58Lambert-St Louis

$1,294

Qantas Airways

8 Feb

STL07:04Lambert-St Louis

32h 56m

1 stop

SYD09:00Sydney Kingsford Smith

10 Feb

SYD19:15Sydney Kingsford Smith

45h 44m

2 stops

STL23:59Lambert-St Louis

$1,305

Air Canada flights from Missouri to Sydney

Our best Air Canada deals on Missouri to Sydney flight tickets

Air Canada

20 May

STL07:30Lambert-St Louis

32h 50m

2 stops

SYD07:20Sydney Kingsford Smith

25 May

SYD09:20Sydney Kingsford Smith

41h 46m

2 stops

STL12:06Lambert-St Louis

$1,586

Air Canada

4 Mar

STL16:05Lambert-St Louis

48h 30m

2 stops

SYD09:35Sydney Kingsford Smith

11 Mar

SYD10:20Sydney Kingsford Smith

45h 09m

2 stops

STL15:29Lambert-St Louis

$1,640

Air Canada

4 Mar

STL16:05Lambert-St Louis

48h 30m

2 stops

SYD09:35Sydney Kingsford Smith

10 Mar

SYD10:20Sydney Kingsford Smith

45h 09m

2 stops

STL15:29Lambert-St Louis

$1,642

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 3/3

18:18-20:50

2 stops33h 32m

Sydney Kingsford Smith

Tue 10/3

11:20-23:58

1 stop28h 38m

$1,292

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 9/3

18:50-20:50

2 stops34h 00m

Sydney Kingsford Smith

Mon 16/3

11:20-23:58

1 stop28h 38m

$1,294

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 23/3

18:50-20:50

2 stops34h 00m

Sydney Kingsford Smith

Mon 30/3

18:50-23:58

1 stop21h 08m

$1,305

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 26/2

06:38-20:50

2 stops45h 12m

Sydney Kingsford Smith

Thu 5/3

17:45-23:59

1 stop23h 14m

$1,319

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 4/3

18:18-20:50

2 stops33h 32m

Sydney Kingsford Smith

Wed 11/3

11:20-23:58

1 stop28h 38m

$1,329

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 6/3

06:38-09:00

1 stop33h 22m

Sydney Kingsford Smith

Fri 13/3

17:50-15:57

2 stops38h 07m

$1,520

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 20/5

07:30-07:20

2 stops32h 50m

Sydney Kingsford Smith

Mon 25/5

09:20-12:06

2 stops41h 46m

$1,586

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 20/5

07:30-07:20

1 stop32h 50m

Sydney Kingsford Smith

Mon 25/5

09:20-12:06

1 stop41h 46m

$1,627

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 4/3

16:05-09:35

2 stops48h 30m

Sydney Kingsford Smith

Wed 11/3

10:20-15:29

2 stops45h 09m

$1,640

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 4/3

16:05-09:35

2 stops48h 30m

Sydney Kingsford Smith

Tue 10/3

10:20-15:29

2 stops45h 09m

$1,642

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 September is, on average, the cheapest month to fly to Sydney from Missouri, with most prices found around $1,623. If you aren’t able to travel to Sydney during the month of September, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,778.

Can stopping save me money on Missouri to Sydney flights?

You could potentially save up to 11% 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 50m
Direct flights	None

The fastest flight from Missouri to Sydney takes 20h 50m

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.

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Leura

Manly

Coogee

Bondi Beach

Cronulla

Randwick

Charlestown

Newport

Swansea

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

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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.