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

Qantas Airways is the most popular carrier operating from Lambert-St Louis to Sydney Kingsford Smith

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

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

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Sydney Kingsford Smith Airport.

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

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$1,024 Cheap Flights from St. Louis to Sydney in 2026/27

Find the cheapest flights from St. Louis to Sydney

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

14:23 - 14:50STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 27m2 stops Dallas/Fort Worth Auckland Intl

11:20 - 23:59SYD Sydney Kingsford Smith-STL Lambert-St Louis

28h 39m1 stop Los Angeles

$1,524Qantas Airways

Mon, 8 Mar - Sat, 20 Mar

14:24 - 14:50STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 26m2 stops Dallas/Fort Worth Auckland Intl

11:20 - 23:56SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 36m1 stop Los Angeles

$1,655Qantas Airways

Mon, 22 Feb - Mon, 1 Mar

06:00 - 06:25STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 25m1 stop Los Angeles

11:10 - 20:17SYD Sydney Kingsford Smith-STL Lambert-St Louis

26h 07m2 stops Los Angeles Dallas/Fort Worth

$1,708American Airlines

Tue, 24 Nov - Tue, 1 Dec

14:23 - 14:50STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 27m2 stops Dallas/Fort Worth Auckland Intl

11:20 - 23:56SYD Sydney Kingsford Smith-STL Lambert-St Louis

28h 36m1 stop Los Angeles

$1,721Qantas Airways

Mon, 8 Mar - Sat, 20 Mar

12:08 - 06:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

25h 47m1 stop Dallas/Fort Worth

06:05 - 13:41SYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 36m2 stops Brisbane Dallas/Fort Worth

$1,763Multiple Airlines

Mon, 8 Mar - Sat, 20 Mar

10:21 - 06:55STL Lambert-St Louis-SYD Sydney Kingsford Smith

27h 34m1 stop Dallas/Fort Worth

11:10 - 23:58SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 48m1 stop Los Angeles

$1,768Qantas Airways

Tue, 24 Nov - Tue, 1 Dec

20:02 - 06:25STL Lambert-St Louis-SYD Sydney Kingsford Smith

41h 23m3 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl Los Angeles

06:05 - 13:41SYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 36m2 stops Brisbane Dallas/Fort Worth

$1,769Multiple Airlines

Mon, 8 Mar - Sat, 20 Mar

15:45 - 11:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 20m2 stops Dallas/Fort Worth Brisbane

10:20 - 23:59SYD Sydney Kingsford Smith-STL Lambert-St Louis

28h 39m1 stop Los Angeles

$1,783Qantas Airways

Fri, 29 Jan - Sat, 15 May

15:45 - 21:30STL Lambert-St Louis-SYD Sydney Kingsford Smith

36h 45m2 stops Dallas/Fort Worth Brisbane

12:00 - 17:21SYD Sydney Kingsford Smith-STL Lambert-St Louis

20h 21m1 stop Dallas/Fort Worth

$1,803Qantas Airways

Fri, 29 Jan - Sat, 15 May

18:00 - 11:05STL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 05m2 stops Dallas/Fort Worth Brisbane

10:20 - 17:21SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 01m2 stops Los Angeles Dallas/Fort Worth

$1,810Multiple Airlines

Fri, 29 Jan - Sat, 15 May

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Qantas Airways flights from St. Louis to Sydney

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

Qantas Airways

22 Feb

STL14:24Lambert-St Louis

31h 26m

2 stops

SYD14:50Sydney Kingsford Smith

1 Mar

SYD11:20Sydney Kingsford Smith

29h 36m

1 stop

STL23:56Lambert-St Louis

$1,655

Qantas Airways

8 Mar

STL14:23Lambert-St Louis

31h 27m

2 stops

SYD14:50Sydney Kingsford Smith

20 Mar

SYD11:20Sydney Kingsford Smith

28h 36m

1 stop

STL23:56Lambert-St Louis

$1,721

Qantas Airways

24 Nov

STL10:21Lambert-St Louis

27h 34m

1 stop

SYD06:55Sydney Kingsford Smith

1 Dec

SYD11:10Sydney Kingsford Smith

29h 48m

1 stop

STL23:58Lambert-St Louis

$1,768

Air New Zealand flights from St. Louis to Sydney

Our best Air New Zealand deals on St. Louis to Sydney flight tickets

Air New Zealand

21 Feb

STL06:10Lambert-St Louis

35h 25m

2 stops

SYD10:35Sydney Kingsford Smith

2 Mar

SYD11:50Sydney Kingsford Smith

27h 35m

2 stops

STL22:25Lambert-St Louis

$1,822

Air New Zealand

24 Jan

STL17:59Lambert-St Louis

47h 36m

2 stops

SYD10:35Sydney Kingsford Smith

6 Feb

SYD19:25Sydney Kingsford Smith

44h 05m

2 stops

STL22:30Lambert-St Louis

$1,861

Air New Zealand

8 Mar

STL06:15Lambert-St Louis

35h 20m

2 stops

SYD10:35Sydney Kingsford Smith

20 Mar

SYD19:25Sydney Kingsford Smith

42h 47m

2 stops

STL22:12Lambert-St Louis

$1,869

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Mon 8/3

14:23-14:50

2 stops31h 27m

Sydney Kingsford Smith

Sat 20/3

11:20-23:59

1 stop28h 39m

$1,524

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Mon 22/2

14:24-14:50

2 stops31h 26m

Sydney Kingsford Smith

Mon 1/3

11:20-23:56

1 stop29h 36m

$1,655

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Tue 24/11

06:00-06:25

1 stop31h 25m

Sydney Kingsford Smith

Tue 1/12

11:10-20:17

2 stops26h 07m

$1,708

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Mon 8/3

14:23-14:50

2 stops31h 27m

Sydney Kingsford Smith

Sat 20/3

11:20-23:56

1 stop28h 36m

$1,721

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Mon 8/3

12:08-06:55

1 stop25h 47m

Sydney Kingsford Smith

Sat 20/3

06:05-13:41

2 stops23h 36m

$1,763

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Tue 24/11

10:21-06:55

1 stop27h 34m

Sydney Kingsford Smith

Tue 1/12

11:10-23:58

1 stop29h 48m

$1,768

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Mon 8/3

20:02-06:25

3 stops41h 23m

Sydney Kingsford Smith

Sat 20/3

06:05-13:41

2 stops23h 36m

$1,769

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Fri 29/1

15:45-11:05

2 stops26h 20m

Sydney Kingsford Smith

Sat 15/5

10:20-23:59

1 stop28h 39m

$1,783

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Fri 29/1

15:45-21:30

2 stops36h 45m

Sydney Kingsford Smith

Sat 15/5

12:00-17:21

1 stop20h 21m

$1,803

Fastest return journey

St. LouisSydney

STL Lambert-St Louis - SYD Sydney Kingsford Smith

STLSYD

Lambert-St Louis

Fri 29/1

18:00-11:05

2 stops24h 05m

Sydney Kingsford Smith

Sat 15/5

10:20-17:21

2 stops22h 01m

$1,810

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 St. Louis 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

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

Prices are currently low for flights on this route.

Typical prices usually range from $1,954 to $2,655.
The lowest price recently found on this route was $1,593.

What is the cheapest month to fly to Sydney?

The month of March is, on average, the cheapest month to fly to Sydney from St. Louis, with most prices found around $1,733. If you aren’t able to travel to Sydney during the month of March, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $1,854.

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

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

When to book flights from St. Louis to Sydney

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

Estimated return price

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

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

Best price found	$1,024
Fastest flight time	21h 15m
Direct flights	None

The best one-way flight to Sydney from St. Louis in the past 72 hours is $1,024. The best return flight deal from St. Louis to Sydney found on momondo in the last 72 hours is $1,524.

The fastest flight from St. Louis to Sydney takes 21h 15m

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

Search flight deals

Frequently asked questions about flying from St. Louis to Sydney

How far is Lambert-St Louis to Sydney Kingsford Smith by plane?
A flight from Lambert-St Louis to Sydney Kingsford Smith will travel around 14576.1 km. In terms of flight time, this usually takes a little over 21h 15m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Sydney Kingsford Smith Airport?
Prices for flights from Lambert-St Louis Airport to Sydney Kingsford Smith Airport refresh daily.
How old do you have to be to fly from Lambert-St Louis Airport to Sydney Kingsford Smith Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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momondo does allow users to show only those flights to Sydney from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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