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

Fiji Airways, Air Canada, and Qantas Airways 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 42% 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.

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 23h 05m. Keep in mind that layovers or delays could extend your travel time.

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 September 2025, 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.

$556 Cheap Flights from Missouri to Sydney in 2025/26

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Find the cheapest flights from Missouri to Sydney

Round-trip

One-way

Last minute

Cheap round-trip flights

6:39 am - 9:00 amSTL-SYD

34h 21m1 stop

5:50 pm - 3:29 pmSYD-STL

38h 39m2 stops

$984Qantas Airways

Find Deal

Wed, Oct 29 - Thu, Nov 13

9:01 am - 8:00 amCOU-SYD

30h 59m2 stops

11:50 am - 8:51 pmSYD-COU

25h 01m2 stops

$987United Airlines

Find Deal

Sat, Oct 18 - Fri, Oct 31

5:10 pm - 9:35 amMCI-SYD

48h 25m2 stops

11:20 am - 4:05 pmSYD-MCI

21h 45m2 stops

$1,104Air Canada

Find Deal

Sat, Nov 1 - Thu, Nov 6

7:00 am - 9:00 amSTL-SYD

34h 00m2 stops

11:20 am - 11:59 pmSYD-STL

29h 39m2 stops

$1,126Multiple Airlines

Find Deal

Wed, Oct 29 - Thu, Nov 13

7:00 am - 7:25 amSTL-SYD

32h 25m2 stops

11:20 am - 11:59 pmSYD-STL

29h 39m2 stops

$1,127Multiple Airlines

Find Deal

Wed, Oct 29 - Thu, Nov 13

4:57 pm - 9:35 amMCI-SYD

47h 38m2 stops

10:20 am - 4:03 pmSYD-MCI

21h 43m2 stops

$1,140Air Canada

Find Deal

Tue, Mar 3 - Tue, Mar 10

5:49 pm - 12:30 pmSTL-SYD

25h 41m2 stops

2:10 pm - 11:08 pmSYD-STL

25h 58m2 stops

$1,161Fiji Airways

Find Deal

Tue, Feb 17 - Sun, Mar 1

4:14 pm - 7:45 pmSTL-SYD

34h 31m2 stops

9:40 pm - 3:18 pmSYD-STL

34h 38m2 stops

$1,172Alaska Airlines

Find Deal

Fri, Nov 7 - Fri, Nov 14

6:03 pm - 12:30 pmSTL-SYD

25h 27m2 stops

2:30 pm - 7:30 pmSYD-STL

22h 00m2 stops

$1,242Fiji Airways

Find Deal

Sat, Nov 8 - Sat, Nov 15

5:55 pm - 7:45 pmMCI-SYD

32h 50m2 stops

9:40 pm - 1:42 pmSYD-MCI

33h 02m2 stops

$1,565Alaska Airlines

Find Deal

Fri, Feb 6 - Sat, Feb 14

Qantas Airways flights from Missouri to Sydney

Our best Qantas Airways deals on Missouri to Sydney flight tickets

Qantas Airways

Oct 29

STL6:39 amLambert-St Louis

34h 21m

1 stop

SYD9:00 amSydney Kingsford Smith

Nov 13

SYD5:50 pmSydney Kingsford Smith

38h 39m

2 stops

STL3:29 pmLambert-St Louis

$984

Find similar

Qantas Airways

Feb 17

STL6:10 amLambert-St Louis

56h 25m

2 stops

SYD7:35 amSydney Kingsford Smith

Mar 1

SYD11:15 amSydney Kingsford Smith

28h 53m

1 stop

STL11:08 pmLambert-St Louis

$987

Find similar

Qantas Airways

Oct 29

STL6:39 amLambert-St Louis

34h 21m

1 stop

SYD9:00 amSydney Kingsford Smith

Nov 13

SYD5:50 pmSydney Kingsford Smith

38h 39m

2 stops

STL3:29 pmLambert-St Louis

$997

Find similar

Fiji Airways flights from Missouri to Sydney

Our best Fiji Airways deals on Missouri to Sydney flight tickets

Fiji Airways

Feb 17

STL5:49 pmLambert-St Louis

25h 41m

2 stops

SYD12:30 pmSydney Kingsford Smith

Mar 1

SYD2:10 pmSydney Kingsford Smith

25h 58m

2 stops

STL11:08 pmLambert-St Louis

$1,161

Find similar

Fiji Airways

Nov 8

STL6:03 pmLambert-St Louis

25h 27m

2 stops

SYD12:30 pmSydney Kingsford Smith

Nov 15

SYD2:30 pmSydney Kingsford Smith

22h 00m

2 stops

STL7:30 pmLambert-St Louis

$1,242

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 10/29

6:39 am-9:00 am

1 stop34h 21m

Sydney Kingsford Smith

Thu 11/13

5:50 pm-3:29 pm

2 stops38h 39m

$984

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Sat 10/18

9:01 am-8:00 am

2 stops30h 59m

Sydney Kingsford Smith

Fri 10/31

11:50 am-8:51 pm

2 stops25h 01m

$987

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Sat 11/1

5:10 pm-9:35 am

2 stops48h 25m

Sydney Kingsford Smith

Thu 11/6

11:20 am-4:05 pm

2 stops21h 45m

$1,104

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 10/29

7:00 am-9:00 am

2 stops34h 00m

Sydney Kingsford Smith

Thu 11/13

11:20 am-11:59 pm

2 stops29h 39m

$1,126

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 10/29

7:00 am-7:25 am

2 stops32h 25m

Sydney Kingsford Smith

Thu 11/13

11:20 am-11:59 pm

2 stops29h 39m

$1,127

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Tue 3/3

4:57 pm-9:35 am

2 stops47h 38m

Sydney Kingsford Smith

Tue 3/10

10:20 am-4:03 pm

2 stops21h 43m

$1,140

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 2/17

5:49 pm-12:30 pm

2 stops25h 41m

Sydney Kingsford Smith

Sun 3/1

2:10 pm-11:08 pm

2 stops25h 58m

$1,161

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 11/7

4:14 pm-7:45 pm

2 stops34h 31m

Sydney Kingsford Smith

Fri 11/14

9:40 pm-3:18 pm

2 stops34h 38m

$1,172

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 11/8

6:03 pm-12:30 pm

2 stops25h 27m

Sydney Kingsford Smith

Sat 11/15

2:30 pm-7:30 pm

2 stops22h 00m

$1,242

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Fri 2/6

5:55 pm-7:45 pm

2 stops32h 50m

Sydney Kingsford Smith

Sat 2/14

9:40 pm-1:42 pm

2 stops33h 02m

$1,565

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 $1,266. 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 $1,359.

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 $1,467 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 $909 on momondo.

Can stopping save me money on Missouri to Sydney flights?

You could potentially save up to 17% 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

Direct flights	None

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 September 2025, 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 $822	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights
Fiji Airways	PriceFrom $887	Free Cancellation	Rating 8.0 205 reviews	Search Fiji Airways flights
Air Canada	PriceFrom $897	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
American Airlines	PriceFrom $1,044	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,130	Free Cancellation	Rating 7.5 908 reviews	Search Qantas Airways flights
Delta	PriceFrom $1,211	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights

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Katoomba

Wollongong

Randwick

Cronulla

Coogee

Lithgow

Penrith

Manly

Leura

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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Flights to Melbournefrom $764

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Cheap flights from Missouri to Sydney from $556

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 10/29. 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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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 17% 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?

Fiji Airways, Air Canada, and Qantas Airways 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

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