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Look for other cheap flights to Lambert-St Louis

$832 Cheap flights to St. Louis

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to St. Louis departing on 26/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Australia to St. Louis

Cheap return flights

Enter your travel dates to find the best prices.
American Airlines Logo
09:10 - 17:37
SYD
-
STL
47h 27m
2 stops
American Airlines Logo
05:42 - 06:55
STL
-
SYD
34h 13m
1 stop
$1,389American Airlines
Fri, 28 Aug - Mon, 7 Sep
American Airlines Logo
09:10 - 18:05
SYD
-
STL
23h 55m
2 stops
American Airlines Logo
15:34 - 07:05
STL
-
SYD
24h 31m
2 stops
$1,412American Airlines
Wed, 26 Aug - Wed, 9 Sep
American Airlines Logo
09:10 - 16:41
SYD
-
STL
22h 31m
2 stops
American Airlines Logo
06:30 - 07:05
STL
-
SYD
33h 35m
1 stop
$1,413American Airlines
Wed, 26 Aug - Wed, 9 Sep
United Airlines Logo
10:20 - 18:39
SYD
-
STL
23h 19m
1 stop
United Airlines Logo
12:59 - 07:00
STL
-
SYD
27h 01m
2 stops
$1,439United Airlines
Wed, 26 Aug - Mon, 7 Sep
Qantas Airways Logo
09:10 - 22:59
SYD
-
STL
28h 49m
1 stop
Qantas Airways Logo
06:30 - 07:05
STL
-
SYD
33h 35m
1 stop
$1,477Qantas Airways
Wed, 26 Aug - Wed, 9 Sep
United Airlines Logo
10:55 - 11:57
MEL
-
STL
40h 02m
2 stops
United Airlines Logo
06:15 - 08:15
STL
-
MEL
35h 00m
2 stops
$1,778United Airlines
Mon, 7 Sep - Sun, 27 Sep
Qantas Airways Logo
09:45 - 22:59
MEL
-
STL
28h 14m
1 stop
Qantas Airways Logo
18:43 - 05:00
STL
-
MEL
43h 17m
1 stop
$1,779Qantas Airways
Mon, 7 Sep - Sun, 27 Sep
Multiple Airlines Logo
08:15 - 16:28
BNE
-
STL
23h 13m
2 stops
Multiple Airlines Logo
06:37 - 05:00
STL
-
BNE
31h 23m
1 stop
$2,562Multiple Airlines
Tue, 7 Jul - Wed, 22 Jul
Multiple Airlines Logo
14:10 - 23:59
BNE
-
STL
24h 49m
2 stops
Multiple Airlines Logo
06:37 - 13:40
STL
-
BNE
40h 03m
2 stops
$2,623Multiple Airlines
Tue, 7 Jul - Wed, 22 Jul
Air Canada Logo
10:45 - 15:30
BNE
-
STL
44h 45m
2 stops
Air Canada Logo
16:30 - 08:45
STL
-
BNE
24h 15m
2 stops
$2,639Air Canada
Thu, 12 Nov - Mon, 16 Nov

momondo Fare Finder

 
Locate flights to Lambert-St Louis that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 78,305 searches and data was last updated on 15 June 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 28/8

09:10-17:37

2 stops47h 27m

Lambert-St Louis

Mon 7/9

05:42-06:55

1 stop34h 13m

$1,389
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 26/8

09:10-18:05

2 stops23h 55m

Lambert-St Louis

Wed 9/9

15:34-07:05

2 stops24h 31m

$1,412

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 26/8

09:10-16:41

2 stops22h 31m

Lambert-St Louis

Wed 9/9

06:30-07:05

1 stop33h 35m

$1,413

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 26/8

10:20-18:39

1 stop23h 19m

Lambert-St Louis

Mon 7/9

12:59-07:00

2 stops27h 01m

$1,439

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 26/8

09:10-22:59

1 stop28h 49m

Lambert-St Louis

Wed 9/9

06:30-07:05

1 stop33h 35m

$1,477

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 7/9

10:55-11:57

2 stops40h 02m

Lambert-St Louis

Sun 27/9

06:15-08:15

2 stops35h 00m

$1,778

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 7/9

09:45-22:59

1 stop28h 14m

Lambert-St Louis

Sun 27/9

18:43-05:00

1 stop43h 17m

$1,779

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Tue 7/7

08:15-16:28

2 stops23h 13m

Lambert-St Louis

Wed 22/7

06:37-05:00

1 stop31h 23m

$2,562

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Tue 7/7

14:10-23:59

2 stops24h 49m

Lambert-St Louis

Wed 22/7

06:37-13:40

2 stops40h 03m

$2,623

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Thu 12/11

10:45-15:30

2 stops44h 45m

Lambert-St Louis

Mon 16/11

16:30-08:45

2 stops24h 15m

$2,639

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to St. Louis from

St. Louis flights insights and trends

Explore insights for your St. Louis flight to craft the best travel plan

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

The month of September is, on average, the cheapest month to fly to St. Louis from Australia, with most prices found around $1,340. If you aren’t able to travel to St. Louis during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,630.

Cheapest flights to Lambert-St Louis

Find the cheapest flights to Lambert-St Louis from your nearest city or airport
Find flights from Sydney to St. Louis
CHEAPEST MONTH TO FLY TO ST. LOUIS FROM SYDNEYSeptember29% cheaperFlying from Sydney to St. Louis costs on average just $1,340 in September
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM SYDNEYJuly35% more expensiveIt costs about $2,528 for flights to St. Louis from Sydney in July
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM SYDNEYJuly700% more users visitedMore momondo users searched in flights to St. Louis from Sydney in July than any other month

Cheap St. Louis flight deals and tips

Summary info about St. Louis flight prices, duration and airlines

Best One-Way Price

$832

Best Round-Trip Price

$1,389

Fastest flight time

24h 40m

Popular in

April
The best one-way flight price to St. Louis from Australia in the last 5 days is $832 (Melbourne to Lambert-St Louis).
Search Deals
The best round-trip flight price to St. Louis from Australia in the last 5 days is $1,389 (Sydney Kingsford Smith to Lambert-St Louis).
Search Deals
The fastest flight to St. Louis from Australia takes 24h 40m (Sydney Kingsford Smith to Lambert-St Louis).
Search Deals
April has the highest demand for flights to St. Louis, with a 13% price increase on average.
Search Deals

Frequently asked questions about flying to St. Louis

Is there an alternative airport near St. Louis?

Those flying to St. Louis could potentially find better pricing at Belleville Airport (35 km from St. Louis city centre), Marion Williamson County Airport (142 km from St. Louis city centre) or Springfield Capital Airport (142 km from St. Louis city centre) depending on the month and departure airport.

When did momondo last update prices for flights to Lambert-St Louis Airport?

Prices for flights to Lambert-St Louis Airport were last updated today.

How many operators does momondo search for flights to Lambert-St Louis Airport?

As of June 2026, there are 4 operators available to choose from for flights to Lambert-St Louis Airport.

How old do you have to be to fly to Lambert-St Louis 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 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.

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles

Why use momondo?

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

Finding the right flight to St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

Flights 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 to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to St. Louis.

I’m not ready to book a flight to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to St. Louis

Popular Flights to St. Louis

Popular routes according to searches in the past day on momondo
Sydney Kingsford Smith to Lambert-St Louis Flightsfrom $1,046
Melbourne to Lambert-St Louis Flightsfrom $1,265
Brisbane to Lambert-St Louis Flightsfrom $2,051
Devonport to Lambert-St Louis Flightsfrom $2,278