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Cheap flights from Australia to St. Louis from $1,725

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
5 Apr — 12 Apr1
1 adult

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 31 March 2025.

Round-trip from

$1,725

Popular in

August

Cheapest in

March

Average price

$1,899
Air Canada
  • Air Canada
  • 14/5-21/5
  • 4 total stops
  • 80h 55m total
  • Australia to St. Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($311 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($147 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 31 March 2025.

Wed 14/509:20SYD - STL
2 stops49h 23mAir Canada
Wed 21/508:48STL - SYD
2 stops31h 32mAir Canada
Deal found 30/3$1,725
Wed 14/510:00BNE - STL
2 stops48h 58mAir Canada
Wed 21/507:30STL - BNE
2 stops32h 35mAir Canada
Deal found 30/3$1,993
Wed 14/510:00BNE - STL
2 stops41h 36mMultiple Airlines
Wed 21/507:30STL - BNE
3 stops37h 05mMultiple Airlines
Deal found 30/3$2,048
Mon 18/810:20SYD - STL
1 stop21h 25mUnited Airlines
Sat 8/1115:15STL - SYD
2 stops46h 45mUnited Airlines
Deal found 31/3$2,094
Sun 27/408:55SYD - STL
2 stops53h 21mJapan Airlines
Sun 4/506:15STL - SYD
2 stops57h 05mJapan Airlines
Deal found 30/3$2,183
Tue 13/510:55MEL - STL
1 stop21h 12mUnited Airlines
Tue 20/507:00STL - MEL
1 stop34h 15mUnited Airlines
Deal found 30/3$2,369
Wed 14/511:50SYD - STL
2 stops23h 42mMultiple Airlines
Wed 21/509:40STL - SYD
3 stops32h 05mMultiple Airlines
Deal found 31/3$2,474
Sat 2/813:50BNE - STL
2 stops24h 30mAmerican Airlines
Mon 11/807:00STL - BNE
1 stop31h 25mAmerican Airlines
Deal found 30/3$2,584
Tue 13/508:35MEL - STL
2 stops26h 57mMultiple Airlines
Tue 20/513:41STL - MEL
3 stops30h 09mMultiple Airlines
Deal found 30/3$2,600
Wed 14/510:30BNE - STL
1 stop21h 22mUnited Airlines
Wed 21/509:40STL - BNE
2 stops29h 50mUnited Airlines
Deal found 30/3$2,614
Sun 27/409:10SYD - STL
1 stop29h 06mQantas Airways
Sun 4/506:15STL - SYD
1 stop33h 50mQantas Airways
Deal found 30/3$2,629
Wed 29/1000:45MEL - STL
2 stops33h 18mCathay Pacific
Fri 2/111:14STL - MEL
2 stops32h 16mCathay Pacific
Deal found 31/3$3,546

Cheapflights Fare Finder

Customise your flight search to find flights from Australia to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 31 March 2025.
Use the filters below to find and compare flights from Australia to St. Louis that are best for you.

Fly from

Australia

Fly to

St. Louis

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 14/5

09:20-19:43

2 stops49h 23m

Lambert-St Louis

Wed 21/5

08:48-07:20

2 stops31h 32m

$1,725

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 14/5

10:00-19:58

2 stops48h 58m

Lambert-St Louis

Wed 21/5

07:30-07:05

2 stops32h 35m

$1,993

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 14/5

10:00-12:36

2 stops41h 36m

Lambert-St Louis

Wed 21/5

07:30-11:35

3 stops37h 05m

$2,048

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

10:20-16:45

1 stop21h 25m

Lambert-St Louis

Sat 8/11

15:15-07:00

2 stops46h 45m

$2,094

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 27/4

08:55-23:16

2 stops53h 21m

Lambert-St Louis

Sun 4/5

06:15-06:20

2 stops57h 05m

$2,183

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Tue 13/5

10:55-17:07

1 stop21h 12m

Lambert-St Louis

Tue 20/5

11:00-08:15

2 stops30h 15m

$2,369

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 14/5

11:50-20:32

2 stops23h 42m

Lambert-St Louis

Wed 21/5

09:40-08:45

3 stops32h 05m

$2,474

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Sat 2/8

13:50-23:20

2 stops24h 30m

Lambert-St Louis

Mon 11/8

07:00-05:25

1 stop31h 25m

$2,584

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Tue 13/5

08:35-20:32

2 stops26h 57m

Lambert-St Louis

Tue 20/5

13:41-10:50

3 stops30h 09m

$2,600

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Wed 14/5

10:30-16:52

1 stop21h 22m

Lambert-St Louis

Wed 21/5

09:40-06:30

2 stops29h 50m

$2,614

Flights are sorted by cheapest return flights first.

Deals found on 30/3

Showing 1-10 of 19 results
1
2

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?

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 31 March 2025.

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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

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.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated 31 March 2025.
Peruse reviews from past customers who have flown with Japan Airlines, Air New Zealand and Qantas Airways from Australia to St. Louis to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Crew

8.7

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Food

7.7

Overall

8.3

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Japan Airlines
8.3
Very Good
1,440 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Crew

8.7

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Food

7.7

Overall

8.3

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Air New Zealand
8.0
Very Good
459 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Crew

8.7

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Food

7.7

Overall

8.3

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Qantas Airways
7.5
Good
813 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Crew

8.7

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Food

7.7

Overall

8.3

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
United Airlines
7.4
Good
8,614 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Crew

8.7

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Food

7.7

Overall

8.3

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
American Airlines
7.2
Good
10,000 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Crew

8.7

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Food

7.7

Overall

8.3

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

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?

    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.

  • What are the cheapest airlines to fly from Australia to St. Louis one-way?

    The cheapest airline one-way is Japan Airlines, with whom users have recently found tickets for as low as $2,346. However, be on the lookout for offers from United Airlines and Air Canada, as they are both options that can get you from Australia to St. Louis for a low price.

  • 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 Devonport - 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

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Top 5 airlines flying from Australia to St. Louis

Discover the top 5 airlines that operate flights from Australia to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 31 March 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,534Average$2,604FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$1,536Average$2,369FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air New ZealandCheapest$1,553Average$1,858FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Air CanadaCheapest$1,565Average$2,036FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,765Average$2,668FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

Fly with Cheapflights

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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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