How long is the flight from Australia to St. Louis?

Air Canada and United Airlines can get you from Australia to St. Louis in just under 20h 48m. Your travel time can differ by up to 24h 21m. Airlines will cover a distance of 14074 km. Both multi-stop and direct flights can be found to your destination and back. Find deals

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 inches per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm. Find deals

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C). Find deals

What are the most popular routes from Australia to St. Louis?

Most travellers choose Sydney Kingsford Smith - Lambert-St Louis, Melbourne - Lambert-St Louis or Brisbane - Lambert-St Louis when deciding on the best route from Australia to St. Louis. Find deals

What are the most popular airlines that fly from Australia to St. Louis?

Consider Air Canada, Qantas Airways or United Airlines when booking your flight. These represent the most popular airlines when flying from Australia to St. Louis.

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

November can be a great time to fly to St. Louis from Australia with a flight ticket averaging about $2,068. Cheapflights users have found deals in the month of November for as cheap as $1,252. The most expensive prices can be found in the month of January.

What airport do you fly into for flights to St. Louis from Australia?

Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Australia. Lambert-St Louis is conveniently located just 20.4 km from St. Louis’s city centre.

Can I find deals for flights from Australia to St. Louis that include hotel bookings?

Yes. In addition to deals on Australia to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Australia to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to St. Louis.

Can I find deals for business class flights from Australia to St. Louis?

Yes. Cheapflights offers flight deals from Australia to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$764+ Flights from Australia to St. Louis

Cheap flight deals from Australia to St. Louis

Round-trip from	$1,214
One-way from	$764
Popular in	January
Cheapest in	November
Average price	$2,047

Air Canada
12/3-16/3
4 total stops
93h 39m total
Australia to St. Louis

Search Deals

United Airlines
7/3
1 total stop
37h 52m total
Australia to St. Louis

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($505 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($53 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Australia to St. Louis

Cheapest flights from Australia to St. Louis
Explore the most affordable flight options available from Australia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Sun 2/1110:45BNE - STL

2 stops44h 44mAir Canada

Sun 9/1116:05STL - BNE

2 stops48h 40mAir Canada

Deal found 14/9$1,229

Thu 4/1216:00SYD - STL

2 stops64h 29mAir Canada

Tue 9/1209:00STL - SYD

2 stops31h 35mAir Canada

Deal found 15/9$1,246

Wed 3/1211:20SYD - STL

2 stops29h 36mAmerican Airlines

Fri 12/1214:37STL - SYD

2 stops25h 23mAmerican Airlines

Deal found 15/9$1,250

Thu 4/1211:20SYD - STL

2 stops26h 37mAir Canada

Mon 8/1216:05STL - SYD

2 stops45h 50mAir Canada

Deal found 15/9$1,255

Sun 2/1111:40BNE - STL

2 stops20h 48mUnited Airlines

Sun 9/1117:29STL - BNE

1 stop22h 01mUnited Airlines

Deal found 14/9$1,267

Mon 13/1011:55MEL - STL

2 stops26h 05mUnited Airlines

Mon 20/1015:23STL - MEL

2 stops25h 52mUnited Airlines

Deal found 15/9$1,267

Thu 30/1011:20SYD - STL

2 stops22h 18mAmerican Airlines

Thu 6/1114:29STL - SYD

2 stops25h 31mAmerican Airlines

Deal found 15/9$1,268

Mon 1/1211:50SYD - STL

1 stop39h 14mUnited Airlines

Mon 8/1206:15STL - SYD

1 stop31h 45mUnited Airlines

Deal found 15/9$1,276

Wed 3/1210:40SYD - STL

2 stops38h 45mDelta

Tue 9/1218:06STL - SYD

2 stops69h 24mDelta

Deal found 15/9$1,277

Thu 4/1216:00SYD - STL

2 stops64h 29mAir Canada

Fri 12/1209:00STL - SYD

2 stops52h 55mAir Canada

Deal found 15/9$1,346

Mon 1/1211:20SYD - STL

2 stops28h 09mAmerican Airlines

Fri 12/1206:55STL - SYD

1 stop33h 05mAmerican Airlines

Deal found 15/9$1,351

Wed 3/1211:50SYD - STL

1 stop21h 14mUnited Airlines

Tue 9/1216:45STL - SYD

2 stops23h 20mUnited Airlines

Deal found 15/9$1,436

Best flights from Australia to St. Louis
Discover carefully curated flight deals from Australia to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Thu 12/310:20SYD - STL

2 stops45h 09mAir Canada

Mon 16/316:05STL - SYD

2 stops48h 30mAir Canada

Deal found 13/9$1,214

Sun 2/1111:40BNE - STL

2 stops20h 48mUnited Airlines

Sun 9/1117:29STL - BNE

1 stop22h 01mUnited Airlines

Deal found 14/9$1,267

Wed 3/1210:40SYD - STL

2 stops38h 45mDelta

Tue 9/1218:06STL - SYD

2 stops69h 24mDelta

Deal found 15/9$1,277

Mon 13/1016:00MEL - STL

3 stops43h 43mMultiple Airlines

Mon 20/1016:05STL - MEL

3 stops56h 30mMultiple Airlines

Deal found 15/9$1,651

Sat 7/300:10BNE - STL

2 stops37h 59mCathay Pacific

Tue 10/311:18STL - BNE

2 stops32h 12mCathay Pacific

Deal found 13/9$2,227

Sun 2/1110:45BNE - STL

2 stops44h 44mAir Canada

Sun 9/1116:05STL - BNE

2 stops48h 40mAir Canada

Deal found 14/9$1,229

Mon 13/1011:55MEL - STL

2 stops26h 05mUnited Airlines

Mon 20/1015:23STL - MEL

2 stops25h 52mUnited Airlines

Deal found 15/9$1,267

Thu 4/1211:20SYD - STL

2 stops26h 37mAir Canada

Mon 8/1216:05STL - SYD

2 stops45h 50mAir Canada

Deal found 15/9$1,255

Mon 1/1211:50SYD - STL

1 stop27h 32mUnited Airlines

Mon 8/1215:19STL - SYD

2 stops24h 46mUnited Airlines

Deal found 15/9$1,276

Mon 1/1211:50SYD - STL

1 stop39h 14mUnited Airlines

Tue 9/1216:45STL - SYD

2 stops23h 20mUnited Airlines

Deal found 15/9$1,276

Thu 13/1106:30DPO - STL

2 stops34h 12mQantas Airways

Mon 17/1107:00STL - DPO

2 stops40h 35mQantas Airways

Deal found 13/9$3,299

Tue 2/1212:10SYD - STL

1 stop21h 17mUnited Airlines

Tue 9/1217:30STL - SYD

1 stop22h 45mUnited Airlines

Deal found 15/9$1,276

Last-minute flights from Australia to St. Louis
Discover last-minute flight deals from Australia to St. Louis. Data last updated 16 September 2025 and is based on user searches.

Mon 15/920:05BNE - STL

2 stops30h 47mAmerican Airlines

Wed 24/909:57STL - BNE

2 stops28h 28mAmerican Airlines

Deal found 14/9$1,849

Mon 15/910:00BNE - STL

2 stops44h 18mAir Canada

Tue 23/905:15STL - BNE

2 stops34h 50mAir Canada

Deal found 14/9$1,870

Tue 16/910:20BNE - STL

2 stops48h 18mAir Canada

Mon 22/905:15STL - BNE

2 stops34h 50mAir Canada

Deal found 14/9$1,720

Tue 16/910:20BNE - STL

2 stops48h 18mAir Canada

Sun 21/909:00STL - BNE

2 stops31h 05mAir Canada

Deal found 14/9$1,762

Tue 16/910:20BNE - STL

2 stops48h 18mAir Canada

Fri 26/905:15STL - BNE

2 stops34h 50mAir Canada

Deal found 14/9$1,771

Wed 17/910:30BNE - STL

1 stop21h 23mUnited Airlines

Tue 23/917:49STL - BNE

1 stop21h 41mUnited Airlines

Deal found 14/9$1,864

Thu 18/907:40BNE - STL

2 stops54h 19mQantas Airways

Sun 21/906:20STL - BNE

2 stops38h 45mQantas Airways

Deal found 14/9$1,886

Mon 13/1011:55MEL - STL

2 stops26h 05mUnited Airlines

Mon 20/1015:23STL - MEL

2 stops25h 52mUnited Airlines

Deal found 15/9$1,267

Mon 13/1009:45MEL - STL

1 stop29h 20mAmerican Airlines

Mon 20/1008:49STL - MEL

1 stop28h 11mAmerican Airlines

Deal found 15/9$1,559

Mon 13/1016:00MEL - STL

3 stops43h 43mMultiple Airlines

Mon 20/1016:05STL - MEL

3 stops56h 30mMultiple Airlines

Deal found 15/9$1,651

Wed 29/1010:40BNE - STL

2 stops26h 14mUnited Airlines

Wed 5/1113:35STL - BNE

2 stops25h 55mUnited Airlines

Deal found 14/9$1,567

Thu 30/1011:20SYD - STL

2 stops22h 18mAmerican Airlines

Thu 6/1114:29STL - SYD

2 stops25h 31mAmerican Airlines

Deal found 15/9$1,268

One-way flights from Australia to St. Louis
Search for one-way flight options from Australia to St. Louis. Find affordable one-way fares based on user searches. Data last updated 16 September 2025.

Sat 7/311:50SYD - STL

1 stop37h 52mUnited Airlines

Deal found 15/9$764

Thu 20/1113:00MEL - STL

2 stops25h 54mUnited Airlines

Deal found 15/9$783

Thu 20/1107:25MEL - STL

3 stops49h 04mMultiple Airlines

Deal found 13/9$857

Sun 2/1114:15MEL - STL

3 stops40h 42mMultiple Airlines

Deal found 14/9$1,142

Wed 14/116:05MEL - STL

1 stop23h 22mMultiple Airlines

Deal found 15/9$1,250

Sat 7/310:20SYD - STL

3 stops43h 32mMultiple Airlines

Deal found 15/9$1,270

Sat 1/1100:45MEL - STL

2 stops39h 57mCathay Pacific

Deal found 14/9$1,592

Wed 19/1100:45MEL - STL

2 stops39h 57mCathay Pacific

Deal found 15/9$1,705

Wed 14/110:10MEL - STL

3 stops28h 27mDelta

Deal found 15/9$1,805

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

10:20-15:29

2 stops45h 09m

Lambert-St Louis

Mon 16/3

16:05-08:35

2 stops48h 30m

$1,214

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Sun 2/11

10:45-16:29

2 stops44h 44m

Lambert-St Louis

Sun 9/11

16:05-08:45

2 stops48h 40m

$1,229

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 4/12

11:20-20:57

2 stops26h 37m

Lambert-St Louis

Mon 8/12

16:05-06:55

2 stops45h 50m

$1,255

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Sun 2/11

11:40-17:28

2 stops20h 48m

Lambert-St Louis

Sun 9/11

17:29-07:30

1 stop22h 01m

$1,267

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 13/10

11:55-22:00

2 stops26h 05m

Lambert-St Louis

Mon 20/10

15:23-09:15

2 stops25h 52m

$1,267

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 1/12

11:50-22:22

1 stop27h 32m

Lambert-St Louis

Mon 8/12

15:19-09:05

2 stops24h 46m

$1,276

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 1/12

11:50-10:04

1 stop39h 14m

Lambert-St Louis

Tue 9/12

16:45-09:05

2 stops23h 20m

$1,276

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 2/12

12:10-16:27

1 stop21h 17m

Lambert-St Louis

Tue 9/12

17:30-09:15

1 stop22h 45m

$1,276

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 3/12

10:40-08:25

2 stops38h 45m

Lambert-St Louis

Tue 9/12

18:06-08:30

2 stops69h 24m

$1,277

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 3/12

11:50-22:45

2 stops27h 55m

Lambert-St Louis

Wed 10/12

09:00-09:15

2 stops31h 15m

$1,277

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 27 results

Best time to book a flight from Australia to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Australia with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Australia to St. Louis

What is the cheapest time of day to fly from AU to STL?

When flying from Australia to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown with Air New Zealand, Qantas Airways, andUnited Airlines from Australia to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Air New Zealand

8.0

Very Good

505 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Qantas Airways

7.5

Good

905 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

United Airlines

7.4

Good

8,929 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Air Canada

7.1

Good

10,000 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Related info for your journey

What airport do you fly into for flights to St. Louis from Australia?
Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Australia. Lambert-St Louis is conveniently located just 20.4 km from St. Louis’s city centre.
How long is the flight from Australia to St. Louis?
Air Canada and United Airlines can get you from Australia to St. Louis in just under 20h 48m. Your travel time can differ by up to 24h 21m. Airlines will cover a distance of 14074 km. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from Australia to St. Louis?
Most travellers choose Sydney Kingsford Smith - Lambert-St Louis, Melbourne - Lambert-St Louis or Brisbane - Lambert-St Louis when deciding on the best route from Australia to St. Louis.
Can I find deals for flights from Australia to St. Louis that include hotel bookings?
Yes. In addition to deals on Australia to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Australia to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to St. Louis.
Can I find deals for business class flights from Australia to St. Louis?
Yes. Cheapflights offers flight deals from Australia to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Australia to St. Louis

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Sydney to Kansas City flights

Sydney to St. Louis flights

Melbourne to Kansas City flights

Melbourne to St. Louis flights

Brisbane to St. Louis flights

Cairns to Kansas City flights

Devonport to St. Louis flights

Complete your trip

St. Louis car hire

Lambert-St Louis Airport car hire

Springfield Capital Airport car hire

Belleville Airport car hire

Marion Williamson County Airport car hire

Central West End car hire

Midtown car hire

Soulard car hire

Top 4 airlines flying from Australia to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$1,138	Average$1,780	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,228	Average$2,117	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air New Zealand	Cheapest$1,465	Average$1,736	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
Qantas Airways	Cheapest$1,485	Average$2,397	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Australia to St. Louis?

When you search for this flight from Australia to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Australia to St. Louis?

Cheapflights simply makes it quick and affordable to book flights from Australia to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Australia to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Australia to St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Australia to St. Louis become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Australia to St. Louis from $764

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Australia to St. Louis

Keep the following information in mind while searching for Australia to St. Louis flight deals. Data was last updated 16 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Australia to St. Louis

Cheapest flights from Australia to St. LouisExplore the most affordable flight options available from Australia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Explore the most affordable flight options available from Australia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Australia to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Australia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Australia to St. Louis

What is the cheapest time of day to fly from AU to STL?

Find hourly flight availability from Australia to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 September 2025.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown with Air New Zealand, Qantas Airways, andUnited Airlines from Australia to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Australia to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to St. Louis from Australia?

How long is the flight from Australia to St. Louis?

What are the most popular routes from Australia to St. Louis?

Can I find deals for flights from Australia to St. Louis that include hotel bookings?

How can I find direct flights from Australia to St. Louis?

Can I find deals for business class flights from Australia to St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Australia to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Australia to St. Louis

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Australia to St. Louis?

Why should you use Cheapflights to find cheap flight tickets from Australia to St. Louis?

Can Cheapflights find flights from Australia to St. Louis with no change fees?

Can Cheapflights notify me if prices for flights from Australia to St. Louis become cheaper?

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Cheapest flights from Australia to St. Louis
Explore the most affordable flight options available from Australia to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.