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Look for other cheap flights to Lambert-St Louis

$909 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 16/5. 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.
American Airlines Logo
09:45 - 23:57
MEL
-
STL
29h 12m
1 stop
American Airlines Logo
14:37 - 06:45
STL
-
MEL
25h 08m
2 stops
$1,266American Airlines
Mon, 20 Apr - Mon, 27 Apr
American Airlines Logo
14:05 - 23:57
MEL
-
STL
24h 52m
2 stops
American Airlines Logo
14:37 - 06:45
STL
-
MEL
25h 08m
2 stops
$1,307American Airlines
Mon, 20 Apr - Mon, 27 Apr
United Airlines Logo
10:30 - 16:49
MEL
-
STL
22h 19m
2 stops
United Airlines Logo
18:05 - 08:30
STL
-
MEL
46h 25m
2 stops
$1,330United Airlines
Wed, 25 Mar - Sun, 29 Mar
Air New Zealand Logo
11:55 - 10:07
SYD
-
STL
37h 12m
2 stops
Air New Zealand Logo
15:02 - 08:45
STL
-
SYD
26h 43m
2 stops
$1,572Air New Zealand
Wed, 5 Aug - Sat, 29 Aug
Air New Zealand Logo
11:55 - 10:07
SYD
-
STL
37h 12m
2 stops
Air New Zealand Logo
15:02 - 08:45
STL
-
SYD
26h 43m
2 stops
$1,573Air New Zealand
Wed, 5 Aug - Sat, 29 Aug
Qantas Airways Logo
09:45 - 23:57
MEL
-
STL
29h 12m
1 stop
Qantas Airways Logo
06:21 - 06:45
STL
-
MEL
33h 24m
1 stop
$1,574Qantas Airways
Thu, 23 Apr - Thu, 30 Apr
United Airlines Logo
10:20 - 18:17
SYD
-
STL
22h 57m
1 stop
United Airlines Logo
19:23 - 06:55
STL
-
SYD
20h 32m
1 stop
$1,587United Airlines
Wed, 27 May - Sun, 31 May
Air Canada Logo
10:00 - 15:25
BNE
-
STL
44h 25m
2 stops
Air Canada Logo
16:05 - 07:05
STL
-
BNE
48h 00m
2 stops
$1,595Air Canada
Mon, 20 Apr - Mon, 27 Apr
Air Canada Logo
10:00 - 15:25
BNE
-
STL
44h 25m
2 stops
Air Canada Logo
16:05 - 11:30
STL
-
BNE
52h 25m
3 stops
$1,629Air Canada
Mon, 20 Apr - Mon, 27 Apr
Qantas Airways Logo
06:30 - 23:08
DPO
-
STL
31h 38m
2 stops
Qantas Airways Logo
19:46 - 13:10
STL
-
DPO
50h 24m
2 stops
$2,769Qantas Airways
Fri, 7 Aug - Tue, 11 Aug

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 March 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

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 20/4

09:45-23:57

1 stop29h 12m

Lambert-St Louis

Mon 27/4

14:37-06:45

2 stops25h 08m

$1,266

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 20/4

14:05-23:57

2 stops24h 52m

Lambert-St Louis

Mon 27/4

14:37-06:45

2 stops25h 08m

$1,307

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Wed 25/3

10:30-16:49

2 stops22h 19m

Lambert-St Louis

Sun 29/3

18:05-08:30

2 stops46h 25m

$1,330

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 5/8

11:55-10:07

2 stops37h 12m

Lambert-St Louis

Sat 29/8

15:02-08:45

2 stops26h 43m

$1,572

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 5/8

11:55-10:07

2 stops37h 12m

Lambert-St Louis

Sat 29/8

15:02-08:45

2 stops26h 43m

$1,573

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 23/4

09:45-23:57

1 stop29h 12m

Lambert-St Louis

Thu 30/4

06:21-06:45

1 stop33h 24m

$1,574
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 27/5

10:20-18:17

1 stop22h 57m

Lambert-St Louis

Sun 31/5

19:23-06:55

1 stop20h 32m

$1,587

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 20/4

10:00-15:25

2 stops44h 25m

Lambert-St Louis

Mon 27/4

16:05-07:05

2 stops48h 00m

$1,595

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 20/4

10:00-15:25

2 stops44h 25m

Lambert-St Louis

Mon 27/4

16:05-11:30

3 stops52h 25m

$1,629

DevonportSt. Louis

DPO - STL

DPOSTL

Devonport

Fri 7/8

06:30-23:08

2 stops31h 38m

Lambert-St Louis

Tue 11/8

19:46-13:10

2 stops50h 24m

$2,769

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 May is, on average, the cheapest month to fly to St. Louis from Australia, with most prices found around $1,559. If you aren’t able to travel to St. Louis during the month of May, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,587.

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 SYDNEYMay15% cheaperFlying from Sydney to St. Louis costs on average just $1,559 in May
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM SYDNEYJuly34% more expensiveIt costs about $2,448 for flights to St. Louis from Sydney in July
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM SYDNEYJuly500% 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

$909

Best Round-Trip Price

$1,266

Fastest flight time

24h 19m

Popular in

July
The best one-way flight price to St. Louis from Australia in the last 72 hours is $909 (Brisbane to Lambert-St Louis).
Search Deals
The best round-trip flight price to St. Louis from Australia in the last 72 hours is $1,266 (Melbourne to Lambert-St Louis).
Search Deals
The fastest flight to St. Louis from Australia takes 24h 19m (Sydney Kingsford Smith to Lambert-St Louis).
Search Deals
July has the highest demand for flights to St. Louis, with a 6% 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 March 2026, there are 3 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
Chesterfield
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
Melbourne to Lambert-St Louis Flightsfrom $1,119
Sydney Kingsford Smith to Lambert-St Louis Flightsfrom $1,117
Brisbane to Lambert-St Louis Flightsfrom $1,161
Devonport to Lambert-St Louis Flightsfrom $2,163