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$889 Cheap flights to St. Louis

1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Australia to St. Louis

Cheap return flights

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Delta Logo
10:10 - 23:22MEL  Melbourne-STL Lambert-St Louis
30h 12m2 stops Los Angeles Minneapolis St Paul
Delta Logo
12:28 - 08:00STL  Lambert-St Louis-MEL Melbourne
26h 32m2 stops Minneapolis St Paul Los Angeles
$1,509Delta
Mon, 9 Nov - Mon, 16 Nov
United Airlines Logo
09:15 - 14:13SYD  Sydney Kingsford Smith-STL Lambert-St Louis
21h 58m1 stop Houston George Bush Intcntl
United Airlines Logo
13:40 - 09:20STL  Lambert-St Louis-SYD Sydney Kingsford Smith
26h 40m2 stops Denver Intl San Francisco
$1,509United Airlines
Mon, 9 Nov - Mon, 16 Nov
United Airlines Logo
11:50 - 20:59SYD  Sydney Kingsford Smith-STL Lambert-St Louis
26h 09m2 stops San Francisco Denver Intl
United Airlines Logo
16:39 - 09:05STL  Lambert-St Louis-SYD Sydney Kingsford Smith
23h 26m2 stops Denver Intl Los Angeles
$1,509United Airlines
Mon, 9 Nov - Mon, 16 Nov
United Airlines Logo
09:15 - 16:50SYD  Sydney Kingsford Smith-STL Lambert-St Louis
24h 35m1 stop Houston George Bush Intcntl
United Airlines Logo
14:55 - 07:00STL  Lambert-St Louis-SYD Sydney Kingsford Smith
23h 05m1 stop Houston George Bush Intcntl
$1,509United Airlines
Mon, 9 Nov - Mon, 16 Nov
American Airlines Logo
10:10 - 13:44SYD  Sydney Kingsford Smith-STL Lambert-St Louis
43h 34m2 stops Los Angeles Phoenix Sky Harbor Intl
American Airlines Logo
06:32 - 06:55STL  Lambert-St Louis-SYD Sydney Kingsford Smith
32h 23m1 stop Dallas/Fort Worth
$1,630American Airlines
Wed, 21 Oct - Sat, 24 Oct
American Airlines Logo
10:10 - 10:50SYD  Sydney Kingsford Smith-STL Lambert-St Louis
40h 40m2 stops Los Angeles Chicago O'Hare Intl
American Airlines Logo
10:12 - 06:55STL  Lambert-St Louis-SYD Sydney Kingsford Smith
28h 43m1 stop Dallas/Fort Worth
$1,652American Airlines
Wed, 21 Oct - Sat, 24 Oct
Multiple Airlines Logo
22:45 - 20:42MEL  Melbourne-STL Lambert-St Louis
38h 57m1 stop Los Angeles
Multiple Airlines Logo
08:10 - 14:50STL  Lambert-St Louis-MEL Melbourne
37h 40m2 stops Los Angeles Sydney Kingsford Smith
$1,676Multiple Airlines
Mon, 9 Nov - Mon, 16 Nov
Air New Zealand Logo
08:15 - 18:38MEL  Melbourne-STL Lambert-St Louis
27h 23m2 stops Auckland Intl Houston George Bush Intcntl
Air New Zealand Logo
06:15 - 13:45STL  Lambert-St Louis-MEL Melbourne
38h 30m2 stops Houston George Bush Intcntl Auckland Intl
$1,829Air New Zealand
Tue, 26 Jan - Tue, 16 Feb
Qantas Airways Logo
10:10 - 23:46SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 36m1 stop Los Angeles
Qantas Airways Logo
19:06 - 06:55STL  Lambert-St Louis-SYD Sydney Kingsford Smith
42h 49m1 stop Dallas/Fort Worth
$17,802Qantas Airways
Mon, 19 Oct - Mon, 2 Nov
Qantas Airways Logo
10:10 - 23:46SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 36m1 stop Los Angeles
Qantas Airways Logo
19:06 - 06:55STL  Lambert-St Louis-SYD Sydney Kingsford Smith
42h 49m1 stop Dallas/Fort Worth
$21,914Qantas Airways
Mon, 19 Oct - Mon, 2 Nov

momondo Fare Finder

 
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 Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Mon 9/11

10:10-23:22

2 stops30h 12m

Lambert-St Louis

Mon 16/11

12:28-08:00

2 stops26h 32m

$1,509

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 9/11

09:15-14:13

1 stop21h 58m

Lambert-St Louis

Mon 16/11

13:40-09:20

2 stops26h 40m

$1,509

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 9/11

11:50-20:59

2 stops26h 09m

Lambert-St Louis

Mon 16/11

16:39-09:05

2 stops23h 26m

$1,509
Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 9/11

09:15-16:50

1 stop24h 35m

Lambert-St Louis

Mon 16/11

14:55-07:00

1 stop23h 05m

$1,509

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-13:44

2 stops43h 34m

Lambert-St Louis

Sat 24/10

06:32-06:55

1 stop32h 23m

$1,630

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-10:50

2 stops40h 40m

Lambert-St Louis

Sat 24/10

10:12-06:55

1 stop28h 43m

$1,652

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Mon 9/11

22:45-20:42

1 stop38h 57m

Lambert-St Louis

Mon 16/11

08:10-14:50

2 stops37h 40m

$1,676

MelbourneSt. Louis

MEL Melbourne - STL Lambert-St Louis

MELSTL

Melbourne

Tue 26/1

08:15-18:38

2 stops27h 23m

Lambert-St Louis

Tue 16/2

06:15-13:45

2 stops38h 30m

$1,829

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 19/10

10:10-23:46

1 stop29h 36m

Lambert-St Louis

Mon 2/11

19:06-06:55

1 stop42h 49m

$17,802

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 19/10

10:10-23:46

1 stop29h 36m

Lambert-St Louis

Mon 2/11

19:06-06:55

1 stop42h 49m

$21,914

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 July is, on average, the cheapest month to fly to St. Louis from Australia, 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 $1,514.

Cheapest flights to Lambert-St Louis

Find the cheapest flights to Lambert-St Louis from your nearest city or airport

Cheap St. Louis flight deals and tips

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

Best One-Way Price

$889

Best Round-Trip Price

$1,509

Fastest flight time

27h 59m

Popular in

April
The best one-way flight price to St. Louis from Australia in the last 5 days is $889 (Melbourne to Lambert-St Louis).
Search Deals
The best return flight price to St. Louis from Australia in the last 5 days is $1,509 (Sydney Kingsford Smith to Lambert-St Louis).
Search Deals
The fastest flight to St. Louis from Australia takes 27h 59m (Melbourne to Lambert-St Louis).
Search Deals
April has the highest demand for flights to St. Louis, with a 3% 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 September 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
Collinsville
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

Melbourne to Lambert-St Louis Flightsfrom $1,060
Sydney Kingsford Smith to Lambert-St Louis Flightsfrom $1,057
Brisbane to Lambert-St Louis Flightsfrom $2,030
Devonport to Lambert-St Louis Flightsfrom $2,418