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Look for other cheap flights to Lambert-St Louis

$880 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 30/7. 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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Find the cheapest flights from Australia to St. Louis

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:20 - 18:39
SYD
-
STL
23h 19m
1 stop
United Airlines Logo
17:59 - 06:55
STL
-
SYD
45h 56m
2 stops
$1,442United Airlines
Wed, 12 Aug - Sat, 5 Sep
American Airlines Logo
09:10 - 16:41
SYD
-
STL
22h 31m
2 stops
American Airlines Logo
15:35 - 06:55
STL
-
SYD
24h 20m
1 stop
$1,506American Airlines
Wed, 12 Aug - Fri, 4 Sep
United Airlines Logo
09:30 - 20:38
SYD
-
STL
26h 08m
2 stops
United Airlines Logo
16:40 - 07:00
STL
-
SYD
23h 20m
2 stops
$1,512United Airlines
Wed, 12 Aug - Fri, 4 Sep
Qantas Airways Logo
09:10 - 22:55
SYD
-
STL
28h 45m
1 stop
Qantas Airways Logo
17:11 - 06:55
STL
-
SYD
22h 44m
1 stop
$1,537Qantas Airways
Wed, 12 Aug - Fri, 4 Sep
Air Canada Logo
09:20 - 20:25
SYD
-
STL
50h 05m
2 stops
Air Canada Logo
13:05 - 07:20
STL
-
SYD
51h 15m
2 stops
$1,570Air Canada
Mon, 8 Jun - Sun, 14 Jun
Air Canada Logo
09:20 - 20:25
SYD
-
STL
26h 05m
2 stops
Air Canada Logo
13:05 - 07:20
STL
-
SYD
51h 15m
3 stops
$1,581Air Canada
Mon, 8 Jun - Sun, 14 Jun
Qantas Airways Logo
14:30 - 23:56
MEL
-
STL
24h 26m
2 stops
Qantas Airways Logo
19:20 - 05:00
STL
-
MEL
42h 40m
1 stop
$1,753Qantas Airways
Wed, 10 Jun - Sun, 21 Jun
Multiple Airlines Logo
14:30 - 23:56
MEL
-
STL
24h 26m
2 stops
Multiple Airlines Logo
06:35 - 11:20
STL
-
MEL
37h 45m
2 stops
$1,822Multiple Airlines
Wed, 10 Jun - Sun, 21 Jun
Multiple Airlines Logo
14:20 - 22:55
MEL
-
STL
23h 35m
2 stops
Multiple Airlines Logo
16:29 - 11:40
STL
-
MEL
28h 11m
3 stops
$2,520Multiple Airlines
Mon, 7 Sep - Sun, 27 Sep
Cathay Pacific Logo
00:05 - 21:37
BNE
-
STL
36h 32m
2 stops
Cathay Pacific Logo
17:13 - 22:30
STL
-
BNE
38h 17m
2 stops
$3,298Cathay Pacific
Wed, 24 Jun - Tue, 7 Jul

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 11 May 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

Wed 12/8

10:20-18:39

1 stop23h 19m

Lambert-St Louis

Sat 5/9

17:59-06:55

2 stops45h 56m

$1,442
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:10-16:41

2 stops22h 31m

Lambert-St Louis

Fri 4/9

15:35-06:55

1 stop24h 20m

$1,506

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:30-20:38

2 stops26h 08m

Lambert-St Louis

Fri 4/9

16:40-07:00

2 stops23h 20m

$1,512

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:10-22:55

1 stop28h 45m

Lambert-St Louis

Fri 4/9

17:11-06:55

1 stop22h 44m

$1,537

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 8/6

09:20-20:25

2 stops50h 05m

Lambert-St Louis

Sun 14/6

13:05-07:20

2 stops51h 15m

$1,570

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 8/6

09:20-20:25

2 stops26h 05m

Lambert-St Louis

Sun 14/6

13:05-07:20

3 stops51h 15m

$1,581

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 10/6

14:30-23:56

2 stops24h 26m

Lambert-St Louis

Sun 21/6

19:20-05:00

1 stop42h 40m

$1,753

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 10/6

14:30-23:56

2 stops24h 26m

Lambert-St Louis

Sun 21/6

06:35-11:20

2 stops37h 45m

$1,822

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 7/9

14:20-22:55

2 stops23h 35m

Lambert-St Louis

Sun 27/9

16:29-11:40

3 stops28h 11m

$2,520

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 24/6

00:05-21:37

2 stops36h 32m

Lambert-St Louis

Tue 7/7

17:13-22:30

2 stops38h 17m

$3,298

Flights are sorted by cheapest return flights first.

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

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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 $1,182. If you aren’t able to travel to St. Louis during the month of September, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,588.

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 SYDNEYSeptember35% cheaperFlying from Sydney to St. Louis costs on average just $1,182 in September
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM SYDNEYJuly36% more expensiveIt costs about $2,468 for flights to St. Louis from Sydney in July
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM SYDNEYJuly750% 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

$880

Best Round-Trip Price

$1,442

Fastest flight time

25h 41m

Popular in

April
The best one-way flight price to St. Louis from Australia in the last 72 hours is $880 (Sydney Kingsford Smith to Lambert-St Louis).
Search Deals
The best round-trip flight price to St. Louis from Australia in the last 72 hours is $1,442 (Sydney Kingsford Smith to Lambert-St Louis).
Search Deals
The fastest flight to St. Louis from Australia takes 25h 41m (Sydney Kingsford Smith to Lambert-St Louis).
Search Deals
April has the highest demand for flights to St. Louis, with a 12% 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 May 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 $1,045
Brisbane to Lambert-St Louis Flightsfrom $2,177
Melbourne to Lambert-St Louis Flightsfrom $1,271
Devonport to Lambert-St Louis Flightsfrom $2,397