What is the cheapest airline that flies from Sydney Kingsford Smith to Lambert-St Louis?

American Airlines and United Airlines are the most popular carriers operating from Sydney Kingsford Smith to Lambert-St Louis

Which airlines fly to St. Louis?

Qantas Airways, American Airlines and United Airlines are the top three most popular airlines that fly to St. Louis from Sydney according to our data. Qantas Airways is the first choice among our users, with 34% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?

Prices for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport refresh daily.

How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?

As of October 2026, there are 3 operators available to choose from for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport.

How old do you have to be to fly from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$961 Cheap Flights from Sydney to St. Louis in 2026/27

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Find the cheapest flights from Sydney to St. Louis

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One-way

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14:05 - 21:59SYD Sydney Kingsford Smith-STL Lambert-St Louis

24h 54m1 stop Dallas/Fort Worth

06:00 - 09:00STL Lambert-St Louis-SYD Sydney Kingsford Smith

34h 00m1 stop Los Angeles

$1,347American Airlines

Wed, 18 Nov - Tue, 1 Dec

11:20 - 18:30SYD Sydney Kingsford Smith-STL Lambert-St Louis

24h 10m2 stops Los Angeles Dallas/Fort Worth

11:22 - 06:25STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 03m2 stops Dallas/Fort Worth Los Angeles

$1,445American Airlines

Tue, 19 Jan - Wed, 3 Feb

14:05 - 17:09SYD Sydney Kingsford Smith-STL Lambert-St Louis

20h 04m1 stop Dallas/Fort Worth

11:50 - 06:25STL Lambert-St Louis-SYD Sydney Kingsford Smith

25h 35m2 stops Chicago O'Hare Intl San Francisco

$1,445American Airlines

Thu, 21 Jan - Wed, 27 Jan

11:50 - 18:17SYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 27m1 stop San Francisco

13:17 - 09:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 48m2 stops Chicago O'Hare Intl Los Angeles

$1,449United Airlines

Tue, 19 Jan - Wed, 3 Feb

09:20 - 16:18SYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 58m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

13:17 - 09:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 48m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Los Angeles

$1,449United Airlines

Tue, 19 Jan - Wed, 3 Feb

10:40 - 20:49SYD Sydney Kingsford Smith-STL Lambert-St Louis

27h 09m2 stops Los Angeles Atlanta Hartsfield-Jackson

10:45 - 08:30STL Lambert-St Louis-SYD Sydney Kingsford Smith

28h 45m2 stops Detroit Metropolitan Wayne County Los Angeles

$1,449Delta

Tue, 19 Jan - Wed, 3 Feb

13:20 - 18:17SYD Sydney Kingsford Smith-STL Lambert-St Louis

21h 57m1 stop San Francisco

08:30 - 06:20STL Lambert-St Louis-SYD Sydney Kingsford Smith

28h 50m1 stop San Francisco

$1,449United Airlines

Tue, 19 Jan - Wed, 3 Feb

10:40 - 08:12SYD Sydney Kingsford Smith-STL Lambert-St Louis

38h 32m2 stops Los Angeles Atlanta Hartsfield-Jackson

06:45 - 08:30STL Lambert-St Louis-SYD Sydney Kingsford Smith

32h 45m2 stops Detroit Metropolitan Wayne County Los Angeles

$1,459Delta

Tue, 19 Jan - Wed, 3 Feb

11:20 - 23:36SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 16m1 stop Los Angeles

06:01 - 06:25STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 24m1 stop Los Angeles

$1,462Qantas Airways

Tue, 19 Jan - Wed, 3 Feb

11:20 - 23:36SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 16m1 stop Los Angeles

06:01 - 11:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

36h 04m2 stops Los Angeles Brisbane

$1,643Qantas Airways

Tue, 19 Jan - Wed, 3 Feb

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United Airlines flights from Sydney to St. Louis

Our best United Airlines deals on Sydney to St. Louis flight tickets

United Airlines

19 Jan

SYD13:20Sydney Kingsford Smith

21h 57m

1 stop

STL18:17Lambert-St Louis

3 Feb

STL08:30Lambert-St Louis

28h 50m

1 stop

SYD06:20Sydney Kingsford Smith

$1,449

United Airlines

19 Jan

SYD09:20Sydney Kingsford Smith

23h 58m

2 stops

STL16:18Lambert-St Louis

3 Feb

STL13:17Lambert-St Louis

26h 48m

3 stops

SYD09:05Sydney Kingsford Smith

$1,459

United Airlines

19 Jan

SYD11:20Sydney Kingsford Smith

22h 53m

2 stops

STL17:13Lambert-St Louis

3 Feb

STL13:17Lambert-St Louis

26h 48m

3 stops

SYD09:05Sydney Kingsford Smith

$1,463

Qantas Airways flights from Sydney to St. Louis

Our best Qantas Airways deals on Sydney to St. Louis flight tickets

Qantas Airways

19 Jan

SYD11:20Sydney Kingsford Smith

29h 16m

1 stop

STL23:36Lambert-St Louis

3 Feb

STL06:01Lambert-St Louis

31h 24m

1 stop

SYD06:25Sydney Kingsford Smith

$1,462

Qantas Airways

19 Jan

SYD11:20Sydney Kingsford Smith

29h 16m

1 stop

STL23:36Lambert-St Louis

3 Feb

STL06:01Lambert-St Louis

36h 04m

2 stops

SYD11:05Sydney Kingsford Smith

$1,643

Qantas Airways

19 Jan

SYD06:05Sydney Kingsford Smith

25h 50m

2 stops

STL14:55Lambert-St Louis

3 Feb

STL06:01Lambert-St Louis

38h 14m

2 stops

SYD13:15Sydney Kingsford Smith

$1,843

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 18/11

14:05-21:59

1 stop24h 54m

Lambert-St Louis

Tue 1/12

06:00-09:00

1 stop34h 00m

$1,347

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

11:20-18:30

2 stops24h 10m

Lambert-St Louis

Wed 3/2

11:22-06:25

2 stops26h 03m

$1,445

Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Thu 21/1

14:05-17:09

1 stop20h 04m

Lambert-St Louis

Wed 27/1

11:50-06:25

2 stops25h 35m

$1,445

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

11:50-18:17

1 stop23h 27m

Lambert-St Louis

Wed 3/2

13:17-09:05

2 stops26h 48m

$1,449

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

09:20-16:18

2 stops23h 58m

Lambert-St Louis

Wed 3/2

13:17-09:05

3 stops26h 48m

$1,449

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

10:40-20:49

2 stops27h 09m

Lambert-St Louis

Wed 3/2

10:45-08:30

2 stops28h 45m

$1,449

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

13:20-18:17

1 stop21h 57m

Lambert-St Louis

Wed 3/2

08:30-06:20

1 stop28h 50m

$1,449

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

10:40-08:12

2 stops38h 32m

Lambert-St Louis

Wed 3/2

06:45-08:30

2 stops32h 45m

$1,459

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

11:20-23:36

1 stop29h 16m

Lambert-St Louis

Wed 3/2

06:01-06:25

1 stop31h 24m

$1,462

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

11:20-23:36

1 stop29h 16m

Lambert-St Louis

Wed 3/2

06:01-11:05

2 stops36h 04m

$1,643

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 Sydney to St. Louis

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

What is the typical price of a round-trip flight between Sydney and St. Louis?

Prices are currently low for flights on this route.

Typical prices usually range from $1,619 to $1,802.
The lowest price recently found on this route was $1,347.

What is the cheapest month to fly to St. Louis?

The month of July is, on average, the cheapest month to fly to St. Louis from Sydney, with most prices found around $1,509. If you aren’t able to travel to St. Louis during the month of July, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,515.

Can stopping save me money on Sydney to St. Louis flights?

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

When to book flights from Sydney to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to St. Louis according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Sydney to St. Louis (SYD to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to St. Louis

Best price found	$961
Fastest flight time	22h 06m
Direct flights	None

The best one-way flight to St. Louis from Sydney in the past 72 hours is $961. The best return flight deal from Sydney to St. Louis found on momondo in the last 72 hours is $1,347.

The fastest flight from Sydney to St. Louis takes 22h 06m

There are no direct flights from Sydney to St. Louis. There are no popular flight routes from Sydney to St. Louis.

Search flight deals

Frequently asked questions about flying from Sydney to St. Louis

How far is Sydney Kingsford Smith to Lambert-St Louis by plane?
Sydney Kingsford Smith and Lambert-St Louis are 14576.1 km apart from one another. By plane, this route typically takes 22h 06m.
When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
Prices for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
As of October 2026, there are 3 operators available to choose from for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Sydney to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Sydney to St. Louis is Qantas Airways, representing 34% of all bookings. The subsequent popular airlines are American Airlines at 33% and United Airlines at 33%.

Best airlines flying from Sydney to St. Louis

Compare and see reviews for airlines that fly from Sydney to St. Louis with momondo

Airline	Rating	Free cancellation	Price
United Airlines	PriceFrom $1,434	Free cancellation	Rating 7.3 10,405 reviews	Search United Airlines flights
American Airlines	PriceFrom $1,482	Free cancellation	Rating 7.0 12,187 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,490	Free cancellation	Rating 7.5 1,115 reviews	Search Qantas Airways flights

Collinsville

St. Charles

Why use momondo?

Why should I use momondo to find a flight deal from Sydney to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Sydney.

Can I find flights from Sydney to St. Louis with flexible booking policies on momondo?

Flights from Sydney to St. Louis 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 Sydney to St. Louis?

Once you have performed a search for Sydney to St. Louis 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 Sydney to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Sydney. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your St. Louis trip

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Cheap flights from Sydney to St. Louis from $961

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to St. Louis departing on 13/11. 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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United Airlines flights from Sydney to St. Louis

Our best United Airlines deals on Sydney to St. Louis flight tickets

Qantas Airways flights from Sydney to St. Louis

Our best Qantas Airways deals on Sydney to St. Louis flight tickets

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How to get the cheapest flight ticket from Sydney to St. Louis

What is the typical price of a round-trip flight between Sydney and St. Louis?

What is the cheapest month to fly to St. Louis?

Can stopping save me money on Sydney to St. Louis flights?

What is the cheapest airline that flies from Sydney Kingsford Smith to Lambert-St Louis?

Which airlines fly to St. Louis?

When to book flights from Sydney to St. Louis

Cheap Sydney to St. Louis (SYD to STL) flight deals and tips

Best price found

Fastest flight time

Direct flights

Frequently asked questions about flying from Sydney to St. Louis

Best airlines flying from Sydney to St. Louis

Compare and see reviews for airlines that fly from Sydney to St. Louis with momondo

Travelling to a place near St. Louis?

Why use momondo?

An easier way to manage your St. Louis trip

We make it super easy to schedule, organise 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 the United States

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