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

How long does it take to fly to Sydney?

Flight times from Missouri to Sydney vary, but if you’re flying out of Kansas City and flying into Sydney (one of the most popular routes), then the duration is 19h 59m on average. Another popular route from Missouri to Sydney is flying from Columbia to Sydney, which will take roughly 24h 39m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Sydney?

United Airlines, Qantas Airways and American Airlines are the top three most popular airlines that fly to Sydney from Missouri according to our data. United Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 6 different airlines that fly to Sydney 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 Sydney Kingsford Smith Airport?

Prices for flights from Missouri to Sydney Kingsford Smith Airport are updated daily.

How many operators does momondo search for flights from Missouri to Sydney Kingsford Smith Airport?

As of February 2026, there are 6 operators available to choose from for flights from Missouri to Sydney Kingsford Smith Airport.

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

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 layovers. It is recommended that you verify with the airline you are booking with for 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 license, 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.

$523 Cheap Flights from Missouri to Sydney in 2026

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Round-trip

One-way

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Cheap round-trip flights

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4:13 pm - 8:50 pm

STL

SYD

35h 37m

2 stops

11:20 am - 11:58 pm

SYD

STL

28h 38m

1 stop

$906Qantas Airways

Tue, Mar 3 - Tue, Mar 10

6:38 am - 9:00 am

STL

SYD

33h 22m

1 stop

5:50 pm - 3:28 pm

SYD

STL

37h 38m

2 stops

$950Qantas Airways

Tue, Mar 3 - Tue, Mar 10

6:38 am - 7:35 am

STL

SYD

55h 57m

2 stops

5:45 pm - 11:59 pm

SYD

STL

23h 14m

1 stop

$1,074Qantas Airways

Sat, Feb 14 - Sat, Feb 21

4:13 pm - 6:55 am

STL

SYD

21h 42m

1 stop

5:35 pm - 11:58 pm

SYD

STL

22h 23m

2 stops

$1,131Qantas Airways

Mon, Mar 2 - Mon, Mar 9

2:20 pm - 7:20 am

STL

SYD

26h 00m

2 stops

9:20 am - 12:06 pm

SYD

STL

41h 46m

2 stops

$1,197Air Canada

Tue, May 12 - Tue, May 19

6:20 am - 7:10 pm

STL

SYD

45h 50m

2 stops

12:00 pm - 5:21 pm

SYD

STL

20h 21m

1 stop

$1,206Qantas Airways

Tue, May 12 - Tue, May 19

5:57 pm - 10:20 am

MCI

SYD

24h 23m

2 stops

1:05 pm - 5:17 pm

SYD

MCI

20h 12m

1 stop

$1,208Qantas Airways

Tue, Mar 17 - Tue, Mar 24

2:38 pm - 8:15 am

MCI

SYD

26h 37m

2 stops

12:00 pm - 7:21 pm

SYD

MCI

22h 21m

1 stop

$1,275Multiple Airlines

Mon, Apr 27 - Tue, May 19

2:41 pm - 9:15 am

COU

SYD

26h 34m

2 stops

10:25 am - 8:20 pm

SYD

COU

25h 55m

2 stops

$1,488United Airlines

Thu, Mar 19 - Thu, Mar 26

5:39 pm - 9:50 am

COU

SYD

24h 11m

2 stops

7:45 am - 7:09 pm

SYD

COU

27h 24m

3 stops

$3,239Multiple Airlines

Thu, Mar 19 - Thu, Mar 26

American Airlines flights from Missouri to Sydney

Our best American Airlines deals on Missouri to Sydney flight tickets

American Airlines

Mar 3

STL4:13 pmLambert-St Louis

21h 42m

1 stop

SYD6:55 amSydney Kingsford Smith

Mar 10

SYD11:20 amSydney Kingsford Smith

28h 38m

1 stop

STL11:58 pmLambert-St Louis

$1,263

American Airlines

Mar 4

STL5:12 amLambert-St Louis

32h 43m

1 stop

SYD6:55 amSydney Kingsford Smith

Mar 10

SYD11:20 amSydney Kingsford Smith

28h 38m

1 stop

STL11:58 pmLambert-St Louis

$1,264

American Airlines

Mar 4

STL7:00 amLambert-St Louis

30h 55m

1 stop

SYD6:55 amSydney Kingsford Smith

Mar 10

SYD11:20 amSydney Kingsford Smith

28h 38m

1 stop

STL11:58 pmLambert-St Louis

$1,265

United Airlines flights from Missouri to Sydney

Our best United Airlines deals on Missouri to Sydney flight tickets

United Airlines

Jul 7

STL7:06 pmLambert-St Louis

20h 49m

1 stop

SYD6:55 amSydney Kingsford Smith

Jul 21

SYD10:20 amSydney Kingsford Smith

22h 33m

1 stop

STL5:53 pmLambert-St Louis

$1,281

United Airlines

Jul 7

STL4:50 pmLambert-St Louis

23h 05m

2 stops

SYD6:55 amSydney Kingsford Smith

Jul 21

SYD9:30 amSydney Kingsford Smith

23h 19m

2 stops

STL5:49 pmLambert-St Louis

$1,285

United Airlines

Feb 14

STL4:30 pmLambert-St Louis

47h 35m

2 stops

SYD9:05 amSydney Kingsford Smith

Feb 18

SYD12:10 pmSydney Kingsford Smith

21h 48m

2 stops

STL4:58 pmLambert-St Louis

$1,301

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 3/3

4:13 pm-8:50 pm

2 stops35h 37m

Sydney Kingsford Smith

Tue 3/10

11:20 am-11:58 pm

1 stop28h 38m

$906

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 3/3

6:38 am-9:00 am

1 stop33h 22m

Sydney Kingsford Smith

Tue 3/10

5:50 pm-3:28 pm

2 stops37h 38m

$950

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 2/14

6:38 am-7:35 am

2 stops55h 57m

Sydney Kingsford Smith

Sat 2/21

5:45 pm-11:59 pm

1 stop23h 14m

$1,074

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 3/2

4:13 pm-6:55 am

1 stop21h 42m

Sydney Kingsford Smith

Mon 3/9

5:35 pm-11:58 pm

2 stops22h 23m

$1,131

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 5/12

2:20 pm-7:20 am

2 stops26h 00m

Sydney Kingsford Smith

Tue 5/19

9:20 am-12:06 pm

2 stops41h 46m

$1,197

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 5/12

6:20 am-7:10 pm

2 stops45h 50m

Sydney Kingsford Smith

Tue 5/19

12:00 pm-5:21 pm

1 stop20h 21m

$1,206

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Tue 3/17

5:57 pm-10:20 am

2 stops24h 23m

Sydney Kingsford Smith

Tue 3/24

1:05 pm-5:17 pm

1 stop20h 12m

$1,208

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Mon 4/27

2:38 pm-8:15 am

2 stops26h 37m

Sydney Kingsford Smith

Tue 5/19

12:00 pm-7:21 pm

1 stop22h 21m

$1,275

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Thu 3/19

2:41 pm-9:15 am

2 stops26h 34m

Sydney Kingsford Smith

Thu 3/26

10:25 am-8:20 pm

2 stops25h 55m

$1,488

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Thu 3/19

5:39 pm-9:50 am

2 stops24h 11m

Sydney Kingsford Smith

Thu 3/26

7:45 am-7:09 pm

3 stops27h 24m

$3,239

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 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?

In general, August is the cheapest month to fly from Missouri to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,205. If you are unable to visit Sydney during the month of August, then departing from Missouri during the month November is also very affordable. Most momondo users find prices during this month for around $1,344.

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,436 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Missouri for as low as $948 on momondo.

Can stopping save me money on Missouri to Sydney flights?

You could potentially save up to 1% 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	19h 59m
Direct flights	None

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

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 updated daily.
How many operators does momondo search for flights from Missouri to Sydney Kingsford Smith Airport?
As of February 2026, there are 6 operators available to choose from for flights from Missouri to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Missouri to Sydney Kingsford Smith Airport?
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 layovers. It is recommended that you verify with the airline you are booking with for 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 license, 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.

Best airlines flying from Missouri to Sydney

Compare and see reviews for airlines that fly from Missouri to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $551	Free Cancellation	Rating 7.4 9,235 reviews	Search United Airlines flights
Air Canada	PriceFrom $608	Free Cancellation	Rating 7.1 10,684 reviews	Search Air Canada flights
Delta	PriceFrom $848	Free Cancellation	Rating 7.9 8,138 reviews	Search Delta flights
American Airlines	PriceFrom $1,044	Free Cancellation	Rating 7.2 11,217 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,130	Free Cancellation	Rating 7.5 985 reviews	Search Qantas Airways flights
Fiji Airways	PriceFrom $1,132	Free Cancellation	Rating 8.0 223 reviews	Search Fiji Airways flights

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Manly

Lithgow

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Charlestown

Terrigal

Swansea

Why use momondo?

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

Finding the right flight to Sydney from Missouri is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

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

Flights from Missouri to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Missouri to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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.

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Missouri to Sydney from $523

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Sydney departing on 3/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

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Filter for what you want

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American Airlines flights from Missouri to Sydney

Our best American Airlines deals on Missouri to Sydney flight tickets

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Our best United Airlines deals on Missouri to Sydney flight tickets

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See travel insights to Sydney from

How to get the cheapest flight ticket from Missouri to Sydney

What is the cheapest month to fly to Sydney?

How far in advance should I book a flight to Sydney?

Can stopping save me money on Missouri to Sydney flights?

You could potentially save up to 1% on your flight if you consider stops on a Missouri to Sydney flight.

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

What airlines fly to Sydney?

How long does it take to fly to Sydney?

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

Direct flights

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

How many operators does momondo search for flights from Missouri to Sydney Kingsford Smith Airport?

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

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

Best airlines flying from Missouri to Sydney

Compare and see reviews for airlines that fly from Missouri to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales