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Cheap flights from Australia to St. Louis from $986

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
28 Feb — 7 Mar1
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 23 February 2025.

Round-trip from

$1,620

One-way from

$986

Popular in

August

Cheapest in

March

Average price

$1,986
18/8-8/11
  • 18/8-8/11
  • 4 total stops
  • 69h 01m total
  • Australia to St. Louis
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9/5
  • 9/5
  • 3 total stops
  • 41h 09m total
  • Australia to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($363 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease ($150 potential savings vs. average return price).
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Average for round-trip flights in February 2025
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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 23 February 2025.

Mon 18/809:20SYD - STL
2 stops44h 56mMultiple Airlines
Sat 8/1116:30STL - SYD
2 stops24h 05mMultiple Airlines
Deal found 22/2$1,620
Mon 12/510:20SYD - STL
1 stop21h 49mUnited Airlines
Sat 31/516:32STL - SYD
2 stops47h 28mUnited Airlines
Deal found 22/2$1,731
Mon 12/509:20SYD - STL
2 stops42h 16mAir Canada
Sat 31/513:30STL - SYD
3 stops50h 50mAir Canada
Deal found 22/2$1,752
Thu 30/1012:00MEL - STL
1 stop28h 27mUnited Airlines
Fri 2/117:18STL - MEL
2 stops23h 12mUnited Airlines
Deal found 21/2$2,131
Thu 30/1006:05MEL - STL
2 stops23h 57mMultiple Airlines
Fri 2/112:52STL - MEL
3 stops28h 43mMultiple Airlines
Deal found 21/2$3,217
Wed 29/1000:45MEL - STL
2 stops33h 18mCathay Pacific
Fri 2/111:14STL - MEL
2 stops32h 16mCathay Pacific
Deal found 21/2$3,629

Find flights from Australia to St. Louis within your budget

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 23 February 2025.

Fly from

Australia

Fly to

St. Louis

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:20-15:16

2 stops44h 56m

Lambert-St Louis

Sat 8/11

16:30-09:35

2 stops24h 05m

$1,620

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

10:20-17:09

1 stop21h 49m

Lambert-St Louis

Sat 31/5

16:32-07:00

2 stops47h 28m

$1,731

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

09:20-12:36

2 stops42h 16m

Lambert-St Louis

Sat 31/5

13:30-07:20

3 stops50h 50m

$1,752

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Fri 9/5

07:00-09:09

3 stops41h 09m

$986

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Fri 9/5

10:30-21:48

2 stops26h 18m

$1,580

Flights are sorted by cheapest return flights first.

Deals found on 21/2

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.

Travel insights for flights from Australia to St. Louis

Get recent, data-driven insights about flights from Australia to St. Louis including ideal travel times, pricing trends, and more.

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 23 February 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 23 February 2025.
United Airlines
7.4
Good
8,754 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Reviews

1 / 20

4.0
Okay

Patti,Feb 2025

FCO - EWR

The food was inedible! We are in the food business and aren’t sure who got this contract. But prisoners eat better. The food was so bad. I ate just a small amount and it made me nauseous. Everything is over microwaved too. And what is with the options? Vegan and vegetarian, but no keto or carnivore? I get that may be more expensive. But I’d gladly pay if it even was an option. But it’s not. There are many fresh options that could have been offered that don’t have to be heated too!

United Airlines
7.4
Good
8,754 reviews
United Airlines
7.4
Good
8,754 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Reviews

1 / 20

4.0
Okay

Patti,Feb 2025

FCO - EWR

The food was inedible! We are in the food business and aren’t sure who got this contract. But prisoners eat better. The food was so bad. I ate just a small amount and it made me nauseous. Everything is over microwaved too. And what is with the options? Vegan and vegetarian, but no keto or carnivore? I get that may be more expensive. But I’d gladly pay if it even was an option. But it’s not. There are many fresh options that could have been offered that don’t have to be heated too!

Air Canada
7.0
Good
8,757 reviews
United Airlines
7.4
Good
8,754 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Reviews

1 / 20

4.0
Okay

Patti,Feb 2025

FCO - EWR

The food was inedible! We are in the food business and aren’t sure who got this contract. But prisoners eat better. The food was so bad. I ate just a small amount and it made me nauseous. Everything is over microwaved too. And what is with the options? Vegan and vegetarian, but no keto or carnivore? I get that may be more expensive. But I’d gladly pay if it even was an option. But it’s not. There are many fresh options that could have been offered that don’t have to be heated too!

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 most popular routes from Australia to St. Louis?

    Most travellers choose Sydney Kingsford Smith - Lambert-St Louis, Brisbane - 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

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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 23 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,488Average$2,008FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,505Average$2,333FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$1,517Average$2,574FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air New ZealandCheapest$1,580Average$1,847FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Qantas AirwaysCheapest$1,719Average$2,676FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

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

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

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