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Cheap flights from Sydney to St. Louis from $1,050

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 15/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
15 Jul — 22 Jul1
1 adult

Cheap flight deals from Sydney to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 July 2025.

Round-trip from

$1,595

One-way from

$1,050

Popular in

August

Cheapest in

November

Average price

$2,005
American Airlines
  • American Airlines
  • 18/8-8/11
  • 2 total stops
  • 52h 43m total
  • Sydney to St. Louis
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15/8
  • 15/8
  • 2 total stops
  • 37h 06m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($358 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($138 potential savings vs. average return price).
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Average for round-trip flights in July 2025
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Find flight deals from Sydney to St. Louis

Cheapest flights from Sydney to St. Louis
Explore the most affordable flight options available from Sydney to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 July 2025.

Mon 18/812:10SYD - STL
1 stop18h 58mAmerican Airlines
Sat 8/1106:15STL - SYD
1 stop33h 45mAmerican Airlines
Deal found 8/7$1,595
Fri 22/808:45SYD - STL
2 stops26h 28mAir New Zealand
Fri 29/808:20STL - SYD
2 stops33h 25mAir New Zealand
Deal found 8/7$1,747
Tue 29/709:20SYD - STL
2 stops53h 39mAir Canada
Sun 3/816:00STL - SYD
2 stops48h 20mAir Canada
Deal found 9/7$1,920
Tue 29/709:20SYD - STL
2 stops25h 40mMultiple Airlines
Sun 3/819:38STL - SYD
1 stop20h 17mMultiple Airlines
Deal found 9/7$1,961
Tue 29/717:45SYD - STL
1 stop20h 45mQantas Airways
Sun 3/806:14STL - SYD
1 stop34h 16mQantas Airways
Deal found 9/7$2,654
Mon 18/811:50SYD - STL
3 stops37h 07mLATAM Airlines
Sat 8/1115:30STL - SYD
2 stops45h 45mLATAM Airlines
Deal found 9/7$4,586

Cheapflights Fare Finder

Customise your flight search to find flights from Sydney 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 10 July 2025.
Use the filters below to find and compare flights from Sydney to St. Louis that are best for you.

Fly from

Sydney

Fly to

St. Louis

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

12:10-16:08

1 stop18h 58m

Lambert-St Louis

Sat 8/11

06:15-09:00

1 stop33h 45m

$1,595

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 22/8

08:45-20:13

2 stops26h 28m

Lambert-St Louis

Fri 29/8

08:20-08:45

2 stops33h 25m

$1,747

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 29/7

09:20-23:59

2 stops53h 39m

Lambert-St Louis

Sun 3/8

16:00-07:20

2 stops48h 20m

$1,920

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 29/7

09:20-20:00

2 stops25h 40m

Lambert-St Louis

Sun 3/8

19:38-06:55

1 stop20h 17m

$1,961

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 29/7

17:45-23:30

1 stop20h 45m

Lambert-St Louis

Sun 3/8

06:14-07:30

1 stop34h 16m

$2,654

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

11:50-09:57

3 stops37h 07m

Lambert-St Louis

Sat 8/11

15:30-06:15

2 stops45h 45m

$4,586

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 15/8

16:20-14:26

2 stops37h 06m

$1,050

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 15/8

09:10-23:09

1 stop28h 59m

$1,068

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 2/1

09:15-23:27

2 stops31h 12m

$2,379

Flights are sorted by cheapest return flights first.

Deals found on 10/7

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Sydney 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 Sydney to St. Louis

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

Find hourly flight availability from Sydney 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 10 July 2025.

It’s typically best to fly out from Sydney to St. Louis in the morning. Doing so could potentially save you 32% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost for a return flight from Sydney to St. Louis?

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 10 July 2025.
Get a feel of what it's like to fly with Japan Airlines, Air New Zealand, andQantas Airways from Sydney to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very Good
1,509 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Japan Airlines
8.3
Very Good
1,509 reviews
Japan Airlines
8.3
Very Good
1,509 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Air New Zealand
8.0
Very Good
492 reviews
Japan Airlines
8.3
Very Good
1,509 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Qantas Airways
7.5
Good
873 reviews
Japan Airlines
8.3
Very Good
1,509 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
LATAM Airlines
7.5
Good
1,807 reviews
Japan Airlines
8.3
Very Good
1,509 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
American Airlines
7.2
Good
10,000 reviews
Japan Airlines
8.3
Very Good
1,509 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.

Related info for your journey

Find useful and relevant information for your journey from Sydney 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 are the cheapest airlines flying from Sydney to St. Louis round-trip?

    Flying on American Airlines is currently your cheapest option to St. Louis, with prices starting at $1,595. Additional round-trip tickets that might be worth considering are offered by Air New Zealand and Air Canada, with the lowest prices starting at $1,747 and $1,920, respectively. Users have found that American Airlines is 27% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sydney 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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Alternative routes for Sydney to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Kansas City flights

Top 4 airlines flying from Sydney to St. Louis

Discover the top 4 airlines that operate flights from Sydney 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 10 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,481Average$2,414FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,506Average$1,812FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,688Average$2,141FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,834Average$3,169FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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

When you search for this flight from Sydney 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 Sydney to St. Louis?

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

Yes! Cheapflights helps users easily find flights from Sydney to St. Louis with no change fees.

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

Not ready to book yet? You can track prices for flights from Sydney to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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