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

Air Canada, Asiana Airlines, and ANA 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 56m on average. Another popular route from Missouri to Sydney is flying from St. Louis to Sydney, which will take roughly 21h 04m. 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 39% 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 March 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.

$487 Cheap Flights from Missouri to Sydney in 2026

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Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:06 pm - 7:20 am

STL

SYD

24h 14m

2 stops

9:20 am - 8:43 pm

SYD

STL

26h 23m

2 stops

$1,155Air Canada

Tue, May 12 - Sun, May 24

2:15 pm - 7:20 am

STL

SYD

26h 05m

1 stop

9:20 am - 8:43 pm

SYD

STL

26h 23m

2 stops

$1,189Multiple Airlines

Tue, May 12 - Sun, May 24

1:05 pm - 7:20 am

STL

SYD

51h 15m

2 stops

9:20 am - 8:25 pm

SYD

STL

26h 05m

2 stops

$1,195Air Canada

Mon, May 4 - Mon, May 18

1:05 pm - 7:20 am

STL

SYD

51h 15m

3 stops

9:20 am - 8:25 pm

SYD

STL

26h 05m

2 stops

$1,203Air Canada

Mon, May 4 - Mon, May 18

1:05 pm - 7:20 am

STL

SYD

51h 15m

2 stops

9:20 am - 8:25 pm

SYD

STL

26h 05m

2 stops

$1,214Air Canada

Thu, May 7 - Thu, May 14

6:21 am - 5:40 pm

STL

SYD

44h 19m

2 stops

12:00 pm - 7:30 pm

SYD

STL

22h 30m

1 stop

$1,288Qantas Airways

Mon, May 4 - Mon, May 18

11:30 am - 6:55 am

COU

SYD

28h 25m

2 stops

9:30 am - 10:03 pm

SYD

COU

27h 33m

2 stops

$2,262United Airlines

Wed, May 13 - Sun, May 17

11:30 am - 7:00 am

COU

SYD

28h 30m

2 stops

10:20 am - 8:49 pm

SYD

COU

25h 29m

2 stops

$2,263United Airlines

Wed, May 13 - Sun, May 17

8:00 am - 6:55 am

COU

SYD

31h 55m

2 stops

10:20 am - 8:49 pm

SYD

COU

25h 29m

2 stops

$2,264United Airlines

Wed, May 13 - Sun, May 17

5:21 pm - 6:55 am

COU

SYD

22h 34m

1 stop

12:00 pm - 4:51 pm

SYD

COU

19h 51m

1 stop

$2,857Qantas Airways

Wed, May 13 - Sun, May 17

Qantas Airways flights from Missouri to Sydney

Our best Qantas Airways deals on Missouri to Sydney flight tickets

Qantas Airways

May 4

STL6:21 amLambert-St Louis

44h 19m

2 stops

SYD5:40 pmSydney Kingsford Smith

May 18

SYD12:00 pmSydney Kingsford Smith

22h 30m

1 stop

STL7:30 pmLambert-St Louis

$1,288

Qantas Airways

Apr 19

STL6:21 amLambert-St Louis

40h 29m

2 stops

SYD1:50 pmSydney Kingsford Smith

Apr 29

SYD12:00 pmSydney Kingsford Smith

20h 21m

1 stop

STL5:21 pmLambert-St Louis

$1,387

Qantas Airways

May 4

STL6:11 pmLambert-St Louis

21h 44m

1 stop

SYD6:55 amSydney Kingsford Smith

May 18

SYD12:00 pmSydney Kingsford Smith

20h 21m

1 stop

STL5:21 pmLambert-St Louis

$1,399

Air Canada flights from Missouri to Sydney

Our best Air Canada deals on Missouri to Sydney flight tickets

Air Canada

May 12

STL4:06 pmLambert-St Louis

24h 14m

2 stops

SYD7:20 amSydney Kingsford Smith

May 24

SYD9:20 amSydney Kingsford Smith

26h 23m

2 stops

STL8:43 pmLambert-St Louis

$1,155

Air Canada

May 4

STL1:05 pmLambert-St Louis

51h 15m

2 stops

SYD7:20 amSydney Kingsford Smith

May 18

SYD9:20 amSydney Kingsford Smith

26h 05m

2 stops

STL8:25 pmLambert-St Louis

$1,195

Air Canada

May 4

STL1:05 pmLambert-St Louis

51h 15m

3 stops

SYD7:20 amSydney Kingsford Smith

May 18

SYD9:20 amSydney Kingsford Smith

26h 05m

2 stops

STL8:25 pmLambert-St Louis

$1,203

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 5/12

4:06 pm-7:20 am

2 stops24h 14m

Sydney Kingsford Smith

Sun 5/24

9:20 am-8:43 pm

2 stops26h 23m

$1,155

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 5/12

2:15 pm-7:20 am

1 stop26h 05m

Sydney Kingsford Smith

Sun 5/24

9:20 am-8:43 pm

2 stops26h 23m

$1,189

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

1:05 pm-7:20 am

2 stops51h 15m

Sydney Kingsford Smith

Mon 5/18

9:20 am-8:25 pm

2 stops26h 05m

$1,195

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

1:05 pm-7:20 am

3 stops51h 15m

Sydney Kingsford Smith

Mon 5/18

9:20 am-8:25 pm

2 stops26h 05m

$1,203

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 5/7

1:05 pm-7:20 am

2 stops51h 15m

Sydney Kingsford Smith

Thu 5/14

9:20 am-8:25 pm

2 stops26h 05m

$1,214

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

6:21 am-5:40 pm

2 stops44h 19m

Sydney Kingsford Smith

Mon 5/18

12:00 pm-7:30 pm

1 stop22h 30m

$1,288

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Wed 5/13

11:30 am-6:55 am

2 stops28h 25m

Sydney Kingsford Smith

Sun 5/17

9:30 am-10:03 pm

2 stops27h 33m

$2,262

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Wed 5/13

11:30 am-7:00 am

2 stops28h 30m

Sydney Kingsford Smith

Sun 5/17

10:20 am-8:49 pm

2 stops25h 29m

$2,263

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Wed 5/13

8:00 am-6:55 am

2 stops31h 55m

Sydney Kingsford Smith

Sun 5/17

10:20 am-8:49 pm

2 stops25h 29m

$2,264

Quickest round-trip

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Wed 5/13

5:21 pm-6:55 am

1 stop22h 34m

Sydney Kingsford Smith

Sun 5/17

12:00 pm-4:51 pm

1 stop19h 51m

$2,857

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, March 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 $1,254. If you are unable to visit Sydney during the month of March, then departing from Missouri during the month August is also very affordable. Most momondo users find prices during this month for around $1,294.

Can stopping save me money on Missouri to Sydney flights?

You could potentially save up to 7% 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 56m
Direct flights	None

The fastest flight from Missouri to Sydney takes 19h 56m

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 March 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 9,499 reviews	Search United Airlines flights
Fiji Airways	PriceFrom $887	Free Cancellation	Rating 8.1 237 reviews	Search Fiji Airways flights
Delta	PriceFrom $917	Free Cancellation	Rating 7.9 8,356 reviews	Search Delta flights
Air Canada	PriceFrom $1,000	Free Cancellation	Rating 7.1 10,853 reviews	Search Air Canada flights
American Airlines	PriceFrom $1,044	Free Cancellation	Rating 7.1 11,520 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,094	Free Cancellation	Rating 7.5 1,013 reviews	Search Qantas Airways flights

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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 $487

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 4/26. 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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How to get the cheapest flight ticket from Missouri to Sydney

What is the cheapest month to fly to Sydney?

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What is the cheapest airline that flies 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

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Traveling to a place near Sydney?

Why use momondo?

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.

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List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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