What is the cheapest airline that flies from Australia to Lambert-St Louis?

Air Canada, United Airlines, and Emirates are the most popular carriers operating from Australia to Lambert-St Louis

Which airlines fly to St. Louis?

United Airlines, Qantas Airways and Air Canada are the top three most popular airlines that fly to St. Louis from Australia according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to St. Louis?

The flight from Australia to St. Louis depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Melbourne (a popular airport in Australia) to St. Louis (the most popular airport in St. Louis), then the flight time is 20h 58m on average. If you fly from Brisbane (another popular airport in Australia) to St. Louis, then the average flight time is 23h 14m.

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

Prices for flights from Australia to Lambert-St Louis Airport refresh daily.

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

As of August 2025, there are 5 operators available to choose from for flights from Australia to Lambert-St Louis Airport.

How old do you have to be to fly from Australia to Lambert-St Louis Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Australia to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The required travel and health documents for your Lambert-St Louis 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 Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$805 Cheap Flights from Australia to St. Louis in 2025

1 adult

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Find the cheapest flights from Australia to St. Louis

Round-trip

One-way

Last minute

Recent return flight deals from Australia to St. Louis

10:20 - 20:46SYD-STL

26h 26m2 stops

13:40 - 08:20STL-SYD

26h 40m2 stops

$1,207Air Canada

Find Deal

Wed, 15 Oct - Tue, 21 Oct

10:20 - 15:18SYD-STL

44h 58m2 stops

05:15 - 08:20STL-SYD

35h 05m2 stops

$1,228Air Canada

Find Deal

Mon, 13 Oct - Tue, 21 Oct

09:10 - 19:09SYD-STL

24h 59m2 stops

13:20 - 09:00STL-SYD

26h 40m2 stops

$1,256American Airlines

Find Deal

Mon, 18 Aug - Sat, 8 Nov

09:10 - 19:09SYD-STL

24h 59m2 stops

15:59 - 09:00STL-SYD

24h 01m2 stops

$1,263American Airlines

Find Deal

Mon, 18 Aug - Sat, 8 Nov

10:55 - 16:53MEL-STL

20h 58m1 stop

09:00 - 08:15STL-MEL

32h 15m2 stops

$1,270United Airlines

Find Deal

Mon, 15 Sep - Mon, 22 Sep

11:55 - 20:46MEL-STL

24h 51m2 stops

13:35 - 09:30STL-MEL

26h 55m2 stops

$1,272United Airlines

Find Deal

Sat, 11 Oct - Fri, 21 Nov

13:10 - 20:53SYD-STL

23h 43m1 stop

17:09 - 06:55STL-SYD

21h 46m1 stop

$1,595Qantas Airways

Find Deal

Wed, 15 Oct - Tue, 21 Oct

20:45 - 15:18BNE-STL

57h 33m3 stops

16:05 - 19:00STL-BNE

59h 55m3 stops

$1,636

Find Deal

Mon, 15 Sep - Mon, 22 Sep

10:10 - 23:05SYD-STL

28h 55m1 stop

06:39 - 08:05STL-SYD

33h 26m1 stop

$1,652Qantas Airways

Find Deal

Mon, 13 Oct - Tue, 21 Oct

09:55 - 18:57SYD-STL

25h 02m2 stops

09:00 - 08:45STL-SYD

31h 45m3 stops

$1,844

Find Deal

Wed, 15 Oct - Tue, 21 Oct

United Airlines flights from Australia to St. Louis

Our best United Airlines deals on Australia to St. Louis flight tickets

United Airlines

15 Sept

MEL10:55Melbourne

20h 58m

1 stop

STL16:53Lambert-St Louis

22 Sept

STL09:00Lambert-St Louis

32h 15m

2 stops

MEL08:15Melbourne

$1,270

Find similar

United Airlines

11 Oct

MEL11:55Melbourne

24h 51m

2 stops

STL20:46Lambert-St Louis

21 Nov

STL13:35Lambert-St Louis

26h 55m

2 stops

MEL09:30Melbourne

$1,272

Find similar

United Airlines

14 Sept

MEL10:55Melbourne

20h 58m

1 stop

STL16:53Lambert-St Louis

21 Sept

STL06:15Lambert-St Louis

35h 00m

2 stops

MEL08:15Melbourne

$1,278

Find similar

Air Canada flights from Australia to St. Louis

Our best Air Canada deals on Australia to St. Louis flight tickets

Air Canada

15 Oct

SYD10:20Sydney Kingsford Smith

26h 26m

2 stops

STL20:46Lambert-St Louis

21 Oct

STL13:40Lambert-St Louis

26h 40m

2 stops

SYD08:20Sydney Kingsford Smith

$1,207

Find similar

Air Canada

13 Oct

SYD10:20Sydney Kingsford Smith

44h 58m

2 stops

STL15:18Lambert-St Louis

21 Oct

STL05:15Lambert-St Louis

35h 05m

2 stops

SYD08:20Sydney Kingsford Smith

$1,228

Find similar

Air Canada

14 Oct

SYD10:20Sydney Kingsford Smith

50h 26m

2 stops

STL20:46Lambert-St Louis

20 Oct

STL16:05Lambert-St Louis

48h 15m

2 stops

SYD08:20Sydney Kingsford Smith

$1,238

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 15/10

10:20-20:46

2 stops26h 26m

Lambert-St Louis

Tue 21/10

13:40-08:20

2 stops26h 40m

$1,207

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 13/10

10:20-15:18

2 stops44h 58m

Lambert-St Louis

Tue 21/10

05:15-08:20

2 stops35h 05m

$1,228

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:10-19:09

2 stops24h 59m

Lambert-St Louis

Sat 8/11

13:20-09:00

2 stops26h 40m

$1,256

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:10-19:09

2 stops24h 59m

Lambert-St Louis

Sat 8/11

15:59-09:00

2 stops24h 01m

$1,263

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 15/9

10:55-16:53

1 stop20h 58m

Lambert-St Louis

Mon 22/9

09:00-08:15

2 stops32h 15m

$1,270

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Sat 11/10

11:55-20:46

2 stops24h 51m

Lambert-St Louis

Fri 21/11

13:35-09:30

2 stops26h 55m

$1,272

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 15/10

13:10-20:53

1 stop23h 43m

Lambert-St Louis

Tue 21/10

17:09-06:55

1 stop21h 46m

$1,595

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Mon 15/9

20:45-15:18

3 stops57h 33m

Lambert-St Louis

Mon 22/9

16:05-19:00

3 stops59h 55m

$1,636

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 13/10

10:10-23:05

1 stop28h 55m

Lambert-St Louis

Tue 21/10

06:39-08:05

1 stop33h 26m

$1,652

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 15/10

09:55-18:57

2 stops25h 02m

Lambert-St Louis

Tue 21/10

09:00-08:45

3 stops31h 45m

$1,844

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Australia to St. Louis

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

Other information

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

The month of November is, on average, the cheapest month to fly to St. Louis from Australia, with most prices found around $1,652. If you aren’t able to travel to St. Louis during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,855.

What is the cheapest day to depart on your flight to St. Louis?

According to our data, Saturday is the cheapest day to fly to St. Louis from Australia. The lowest ticket price found for a Saturday departure recently was $2,166. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Australia to St. Louis on a Thursday will generally be more expensive and average around $2,775. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Australia in the morning is the least expensive time of day to depart. momondo users have found prices as low as $2,219 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $3,222 per ticket.

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

You could potentially save up to 34% on your flight if you consider stops on a Australia to St. Louis flight.

Cheap Australia to St. Louis flight deals and tips

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

Best price found	$805
Fastest flight time	18h 58m
Direct flights	None
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Australia in the past 72 hours is $805. The best return flight deal from Australia to St. Louis found on momondo in the last 72 hours is $1,207.

The fastest flight from Australia to St. Louis takes 18h 58m

There are no direct flights from Australia to St. Louis. Popular non-direct routes for this connection are Brisbane Airport - Lambert-St Louis Airport, Sydney Kingsford Smith Airport - Lambert-St Louis Airport and Melbourne Airport - Lambert-St Louis Airport.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Australia to Lambert-St Louis Airport?
Prices for flights from Australia to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Australia to Lambert-St Louis Airport?
As of August 2025, there are 5 operators available to choose from for flights from Australia to Lambert-St Louis Airport.
How old do you have to be to fly from Australia to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Australia to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis 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 Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Australia to St. Louis

Compare and see reviews for airlines that fly from Australia to St. Louis with momondo

Airline	Rating	Free cancellation	Price
United Airlines	PriceFrom $1,378	Free cancellation	Rating 7.4 8,904 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,468	Free cancellation	Rating 7.1 9,855 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,515	Free cancellation	Rating 7.9 501 reviews	Search Air New Zealand flights
Qantas Airways	PriceFrom $1,535	Free cancellation	Rating 7.5 887 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $1,858	Free cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Chesterfield

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Australia to St. Louis. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Australia to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Australia to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Australia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Australia and alert you when they change.

An easier way to manage your St. Louis trip

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Cheap flights from Australia to St. Louis from $805

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Australia to St. Louis departing on 8/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Australia to St. Louis

Recent return flight deals from Australia to St. Louis

Recent one-way flight deals from Australia to St. Louis

Recent last minute flight deals from Australia to St. Louis

United Airlines flights from Australia to St. Louis

Our best United Airlines deals on Australia to St. Louis flight tickets

Air Canada flights from Australia to St. Louis

Our best Air Canada deals on Australia to St. Louis flight tickets

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Use the filters below to find and compare flights from Australia to St. Louis that are best for you.

See travel insights to St. Louis from

How to get the cheapest flight ticket from Australia to St. Louis

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

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

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

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

You could potentially save up to 34% on your flight if you consider stops on a Australia to St. Louis flight.

What is the cheapest airline that flies from Australia to Lambert-St Louis?

Air Canada, United Airlines, and Emirates are the most popular carriers operating from Australia to Lambert-St Louis

Which airlines fly to St. Louis?

How long does it take to fly to St. Louis?

Cheap Australia to St. Louis flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in St. Louis

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

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

How old do you have to be to fly from Australia to Lambert-St Louis Airport?

What documentation or ID do you need to fly to Lambert-St Louis Airport?

Best airlines flying from Australia to St. Louis

Compare and see reviews for airlines that fly from Australia to St. Louis with momondo

Travelling to a place near St. Louis?

Why use momondo?

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

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

How can momondo help me find flights from Australia to St. Louis?

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

An easier way to manage your St. Louis trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Missouri