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 20h 20m on average. Another popular route from Missouri to Sydney is flying from St. Louis to Sydney, which will take roughly 21h 48m. Keep in mind that layovers or delays could extend your travel time.

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

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

What airlines fly to Sydney?

United Airlines, Qantas Airways and Delta 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 41% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 7 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 August 2025, there are 7 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.

$538 Cheap Flights from Missouri to Sydney in 2025

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Find the cheapest flights from Missouri to Sydney

Round-trip

One-way

Last minute

Cheap round-trip flights

9:00 am - 7:00 amCOU-SYD

30h 00m2 stops

11:20 am - 9:19 pmSYD-COU

26h 59m2 stops

$856United Airlines

Find Deal

Mon, Oct 27 - Fri, Nov 7

1:30 pm - 9:35 amSTL-SYD

27h 05m2 stops

11:20 am - 3:29 pmSYD-STL

45h 09m2 stops

$1,006

Find Deal

Sun, Feb 1 - Sun, Feb 15

4:05 pm - 8:35 amSTL-SYD

48h 30m2 stops

11:20 am - 3:29 pmSYD-STL

45h 09m2 stops

$1,023Air Canada

Find Deal

Wed, Oct 29 - Sat, Nov 15

11:41 am - 7:20 amMCI-SYD

28h 39m2 stops

9:20 am - 8:42 pmSYD-MCI

26h 22m2 stops

$1,025Air Canada

Find Deal

Wed, Sep 3 - Wed, Sep 10

5:54 pm - 12:15 pmSTL-SYD

25h 21m2 stops

2:20 pm - 4:06 pmSYD-STL

18h 46m1 stop

$1,082Qantas Airways

Find Deal

Sun, Feb 1 - Sun, Feb 15

1:55 pm - 6:55 amSTL-SYD

24h 00m1 stop

6:00 am - 4:07 pmSYD-STL

27h 07m2 stops

$1,090Qantas Airways

Find Deal

Fri, Nov 28 - Sun, Dec 14

2:57 pm - 6:55 amMCI-SYD

24h 58m1 stop

9:10 am - 5:25 pmSYD-MCI

23h 15m2 stops

$1,214American Airlines

Find Deal

Fri, Sep 5 - Sat, Sep 20

2:54 pm - 9:00 amMCI-SYD

25h 06m2 stops

2:20 pm - 10:25 pmSYD-MCI

25h 05m1 stop

$1,215American Airlines

Find Deal

Mon, Dec 1 - Fri, Dec 12

11:20 am - 10:30 amSTL-SYD

30h 10m2 stops

9:55 am - 4:27 pmSYD-STL

47h 32m2 stops

$1,225Air New Zealand

Find Deal

Mon, Nov 24 - Mon, Dec 8

8:20 am - 9:45 pmSTL-SYD

44h 25m2 stops

9:55 am - 9:59 pmSYD-STL

29h 04m2 stops

$1,237Air New Zealand

Find Deal

Wed, Nov 5 - Sun, Nov 23

Air New Zealand flights from Missouri to Sydney

Our best Air New Zealand deals on Missouri to Sydney flight tickets

Air New Zealand

Nov 24

STL11:20 amLambert-St Louis

30h 10m

2 stops

SYD10:30 amSydney Kingsford Smith

Dec 8

SYD9:55 amSydney Kingsford Smith

47h 32m

2 stops

STL4:27 pmLambert-St Louis

$1,225

Find similar

Air New Zealand

Nov 5

STL8:20 amLambert-St Louis

44h 25m

2 stops

SYD9:45 pmSydney Kingsford Smith

Nov 23

SYD9:55 amSydney Kingsford Smith

29h 04m

2 stops

STL9:59 pmLambert-St Louis

$1,237

Find similar

Air New Zealand

Nov 24

MCI4:35 pmKansas City

24h 55m

2 stops

SYD10:30 amSydney Kingsford Smith

Nov 30

SYD7:15 pmSydney Kingsford Smith

55h 14m

2 stops

MCI9:29 amKansas City

$1,279

Find similar

Cathay Pacific flights from Missouri to Sydney

Our best Cathay Pacific deals on Missouri to Sydney flight tickets

Cathay Pacific

Aug 23

STL5:52 pmLambert-St Louis

45h 18m

2 stops

SYD6:10 amSydney Kingsford Smith

Sep 1

SYD9:50 pmSydney Kingsford Smith

40h 19m

2 stops

STL11:09 pmLambert-St Louis

$1,295

Find similar

Cathay Pacific

Sep 14

STL3:56 pmLambert-St Louis

51h 54m

2 stops

SYD10:50 amSydney Kingsford Smith

Sep 27

SYD9:50 pmSydney Kingsford Smith

37h 35m

2 stops

STL8:25 pmLambert-St Louis

$1,299

Find similar

Cathay Pacific

Aug 23

STL6:00 amLambert-St Louis

37h 50m

2 stops

SYD10:50 amSydney Kingsford Smith

Sep 1

SYD7:40 amSydney Kingsford Smith

54h 29m

2 stops

STL11:09 pmLambert-St Louis

$1,303

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Mon 10/27

9:00 am-7:00 am

2 stops30h 00m

Sydney Kingsford Smith

Fri 11/7

11:20 am-9:19 pm

2 stops26h 59m

$856

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 2/1

1:30 pm-9:35 am

2 stops27h 05m

Sydney Kingsford Smith

Sun 2/15

11:20 am-3:29 pm

2 stops45h 09m

$1,006

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 10/29

4:05 pm-8:35 am

2 stops48h 30m

Sydney Kingsford Smith

Sat 11/15

11:20 am-3:29 pm

2 stops45h 09m

$1,023

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 9/3

11:41 am-7:20 am

2 stops28h 39m

Sydney Kingsford Smith

Wed 9/10

9:20 am-8:42 pm

2 stops26h 22m

$1,025

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 2/1

5:54 pm-12:15 pm

2 stops25h 21m

Sydney Kingsford Smith

Sun 2/15

2:20 pm-4:06 pm

1 stop18h 46m

$1,082

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 11/28

1:55 pm-6:55 am

1 stop24h 00m

Sydney Kingsford Smith

Sun 12/14

6:00 am-4:07 pm

2 stops27h 07m

$1,090

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Fri 9/5

2:57 pm-6:55 am

1 stop24h 58m

Sydney Kingsford Smith

Sat 9/20

9:10 am-5:25 pm

2 stops23h 15m

$1,214

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Mon 12/1

2:54 pm-9:00 am

2 stops25h 06m

Sydney Kingsford Smith

Fri 12/12

2:20 pm-10:25 pm

1 stop25h 05m

$1,215

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 11/24

11:20 am-10:30 am

2 stops30h 10m

Sydney Kingsford Smith

Mon 12/8

9:55 am-4:27 pm

2 stops47h 32m

$1,225

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 11/5

8:20 am-9:45 pm

2 stops44h 25m

Sydney Kingsford Smith

Sun 11/23

9:55 am-9:59 pm

2 stops29h 04m

$1,237

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 $1,241. If you are unable to visit Sydney during the month of August, then departing from Missouri during the month October is also very affordable. Most momondo users find prices during this month for around $1,360.

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

The cheapest day to depart from Missouri to Sydney is on a Wednesday when prices can be found for as low as $1,392. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,518.

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 evening. momondo users have found flights departing from Missouri to Sydney in the evening for as low as $1,440. 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 Sydney are more costly at noon, with an average ticket price of $1,882. Departure times at noon 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 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 $1,454 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 $1,272 on momondo.

Can stopping save me money on Missouri to Sydney flights?

You could potentially save up to 28% 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

Best Price Found	$538
Fastest flight time	19h 59m
Direct flights	None
Airports in Sydney	1 airport

The best one-way flight to Sydney from Missouri in the past 72 hours is $538. The best round-trip flight deal from Missouri to Sydney found on momondo in the last 72 hours is $856.

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

There are no direct flights from Missouri to Sydney. Popular non-direct routes for this connection are Columbia Regional Airport - Sydney Kingsford Smith Airport, Lambert-St Louis Airport - Sydney Kingsford Smith Airport and Kansas City Airport - Sydney Kingsford Smith Airport.

There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

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 August 2025, there are 7 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 $822	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines flights
Fiji Airways	PriceFrom $887	Free Cancellation	Rating 8.0 202 reviews	Search Fiji Airways flights
Air Canada	PriceFrom $962	Free Cancellation	Rating 7.1 9,893 reviews	Search Air Canada flights
Delta	PriceFrom $981	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
American Airlines	PriceFrom $1,044	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air New Zealand	PriceFrom $1,173	Free Cancellation	Rating 8.0 503 reviews	Search Air New Zealand flights
Qantas Airways	PriceFrom $1,185	Free Cancellation	Rating 7.5 888 reviews	Search Qantas Airways flights

Parramatta

Bondi Beach

Katoomba

Wollongong

Randwick

Coogee

Cronulla

Penrith

Manly

Lithgow

Charlestown

Swansea

Leura

Terrigal

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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Flights to Melbournefrom $513

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Flights to Canberrafrom $774

Flights to Darwinfrom $916

Flights to Maroochydorefrom $967

Flights to Launcestonfrom $992

Flights to Ballinafrom $1,785

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Cheap flights from Missouri to Sydney from $538

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 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from Missouri to Sydney

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Air New Zealand flights from Missouri to Sydney

Our best Air New Zealand deals on Missouri to Sydney flight tickets

Cathay Pacific flights from Missouri to Sydney

Our best Cathay Pacific deals on Missouri to Sydney flight tickets

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Use the filters below to find and compare flights from Missouri to Sydney that are best for you.

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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

What is the cheapest month to fly to Sydney?

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

The cheapest day to depart from Missouri to Sydney is on a Wednesday when prices can be found for as low as $1,392. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,518.

What is the cheapest time of day to depart on your flight 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 28% 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?

Air Canada, 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

Best Price Found

Fastest flight time

Direct flights

Airports in Sydney

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