What’s the cheapest stopover airport for flights from Sydney to St. Louis?

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,783.

What’s the top stopover airport for flights from Sydney to St. Louis?

Dallas (DFW) – chosen by Cheapflights users on 60% of one-stop itineraries from Sydney to St. Louis on Cheapflights.

What’s the fastest stopover option from Sydney to St. Louis?

Flights via Dallas (DFW) have the shortest average one-way travel time for one-stop routes: 19h 38m.

Which airport typically offers the quickest stopover for flights from Sydney to St. Louis?

Flights via Houston (IAH) offer the fastest connection on this route, with an average stopover time of 2h 19m.

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

Departing from Sydney to St. Louis will take you 21h 14m. The distance from Sydney to St. Louis is about 14571 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines flying from Sydney to St. Louis round-trip?

Flying on United Airlines is currently your cheapest option to St. Louis, with prices starting at $1,163. Additional round-trip tickets that might be worth considering are offered by American Airlines and Qantas Airways, with the lowest prices starting at $1,448 and $1,475, respectively. Users have found that United Airlines is 33% cheaper than the other options available to this destination.

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.

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).

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

The most popular airlines flying from Sydney to St. Louis are Qantas Airways, United Airlines and American Airlines. Something to consider prior to booking your flight.

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

When flying from Sydney 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.

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.

$1,006+ Cheap Flights from Sydney to St. Louis

Cheap flight deals from Sydney to St. Louis

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 27 August 2026.

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1015:20 -

1 stop23h 35m

Deal found 23/8$1,502

Tue 13/1010:10 -

1 stop29h 36m

Thu 5/1112:58 -

1 stop24h 57m

Deal found 25/8$1,611

Tue 20/1010:10 -

1 stop29h 36m

Sat 24/1008:48 -

2 stops34h 57m

Deal found 26/8$1,643

Thu 8/1013:00 -

1 stop21h 20m

Thu 15/1006:04 -

2 stops36h 26m

Deal found 25/8$1,647

Tue 17/1111:10 -

2 stops23h 45m

Tue 1/1214:48 -

2 stops25h 12m

Deal found 24/8$1,721

Wed 23/909:10 -

1 stop29h 20m

Wed 30/906:30 -

1 stop33h 35m

Deal found 26/8$1,739

Find flight deals from Sydney to St. Louis

Round-trip from	$1,502
One-way from	$1,006
Popular in	April
Cheapest in	September
Average price	$1,480

American Airlines
21/10-24/10
3 total stops
67h 09m total
Sydney to St. Louis

Search Deals

American Airlines
2/11
1 total stop
26h 32m total
Sydney to St. Louis

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($306 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($66 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-13:44

2 stops43h 34m

Lambert-St Louis

Sat 24/10

15:20-06:55

1 stop23h 35m

$1,611

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 23/9

09:10-23:30

1 stop29h 20m

Lambert-St Louis

Wed 30/9

06:30-07:05

1 stop33h 35m

$1,739

Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 23/9

10:20-16:34

2 stops21h 14m

Lambert-St Louis

Wed 30/9

13:29-06:55

2 stops26h 26m

$1,757

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 23/9

09:10-20:52

2 stops26h 42m

Lambert-St Louis

Wed 30/9

11:01-07:05

2 stops29h 04m

$1,760

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 22/9

09:15-23:16

2 stops29h 01m

Lambert-St Louis

Fri 2/10

17:47-06:50

2 stops46h 03m

$1,760

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 13/10

10:30-17:01

2 stops22h 31m

Lambert-St Louis

Thu 5/11

13:08-09:05

3 stops26h 57m

$1,811

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Thu 8/10

06:25-18:43

3 stops28h 18m

Lambert-St Louis

Thu 15/10

14:27-08:05

2 stops25h 38m

$2,299

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:20-16:37

2 stops22h 17m

Lambert-St Louis

Sat 24/10

13:36-08:35

2 stops26h 59m

$2,518

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 13/10

11:55-23:44

3 stops27h 49m

Lambert-St Louis

Thu 5/11

07:30-10:35

3 stops34h 05m

$2,587

Cheapest one-way

Fastest single journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 2/11

11:10-18:16

2 stops24h 06m

$1,013

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 14 resultsSorted by cheapest first

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.

SYD-STL

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

Prices

Currently, September is the cheapest month in which you can book a flight from Sydney to St. Louis (average of $1,445). Flying from Sydney to St. Louis in April is currently the most expensive (average of $2,263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Qantas Airways,United Airlines, andAmerican Airlines 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.

Qantas Airways

7.5

Good

1,085 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!

Qantas Airways

7.5

Good

1,085 reviews

Qantas Airways

7.5

Good

1,085 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

United Airlines

7.4

Good

10,127 reviews

Qantas Airways

7.5

Good

1,085 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

American Airlines

7.1

Good

12,011 reviews

Qantas Airways

7.5

Good

1,085 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

Related info for your journey

How long is the flight from Sydney to St. Louis?
Departing from Sydney to St. Louis will take you 21h 14m. The distance from Sydney to St. Louis is about 14571 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Sydney to St. Louis round-trip?
Flying on United Airlines is currently your cheapest option to St. Louis, with prices starting at $1,163. Additional round-trip tickets that might be worth considering are offered by American Airlines and Qantas Airways, with the lowest prices starting at $1,448 and $1,475, respectively. Users have found that United Airlines is 33% 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.
What is the cheapest month to book a flight from Sydney to St. Louis?
Currently, September is the cheapest month in which you can book a flight from Sydney to St. Louis (average of $1,445). Flying from Sydney to St. Louis in April is currently the most expensive (average of $2,263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Sydney to St. Louis

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Top 3 airlines flying from Sydney to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,163	Average$2,155	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$1,448	Average$1,969	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Qantas Airways	Cheapest$1,475	Average$1,737	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

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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?

Cheapflights simply makes it quick and affordable to book flights from Sydney 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 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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Cheap flights from Sydney to St. Louis from $1,006

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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Sydney to St. Louis

Cheapest flights from Sydney to St. LouisExplore 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 27 August 2026.

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 27 August 2026.

Best flights from Sydney to St. LouisDiscover carefully curated flight deals from Sydney to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Discover carefully curated flight deals from Sydney to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Last-minute flights from Sydney to St. LouisDiscover last-minute flight deals from Sydney to St. Louis. Data last updated 27 August 2026 and is based on user searches.

Discover last-minute flight deals from Sydney to St. Louis. Data last updated 27 August 2026 and is based on user searches.

One-way flights from Sydney to St. LouisSearch for one-way flight options from Sydney to St. Louis. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

Search for one-way flight options from Sydney to St. Louis. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

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

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.

Cheapflights Insights

What is the cheapest month to book a flight from Sydney to St. Louis?

What’s the top stopover airport for flights from Sydney to St. Louis?

Dallas (DFW) – chosen by Cheapflights users on 60% of one-stop itineraries from Sydney to St. Louis on Cheapflights.

What’s the cheapest stopover airport for flights from Sydney to St. Louis?

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,783.

What’s the fastest stopover option from Sydney to St. Louis?

Flights via Dallas (DFW) have the shortest average one-way travel time for one-stop routes: 19h 38m.

Which airport typically offers the quickest stopover for flights from Sydney to St. Louis?

Flights via Houston (IAH) offer the fastest connection on this route, with an average stopover time of 2h 19m.

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Qantas Airways,United Airlines, andAmerican Airlines 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.

Related info for your journey

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

What are the cheapest airlines flying from Sydney to St. Louis round-trip?

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

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

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

What is the cheapest month to book a flight from Sydney to St. Louis?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sydney to St. Louis

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Complete your trip

Complete your trip to St. Louis by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Sydney to St. Louis by cabin class

Find flights from Sydney to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Sydney and St. Louis flights

Browse other Sydney and St. Louis flight options. Last updated on 27 August 2026.

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Browse through other flights departing from Sydney. Flights are based on user searches made on Cheapflights and were last updated on 27 August 2026.

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Top 3 airlines flying from Sydney to St. Louis

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

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

Can Cheapflights 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?

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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 27 August 2026.

Best flights from Sydney to St. Louis
Discover carefully curated flight deals from Sydney to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Last-minute flights from Sydney to St. Louis
Discover last-minute flight deals from Sydney to St. Louis. Data last updated 27 August 2026 and is based on user searches.

One-way flights from Sydney to St. Louis
Search for one-way flight options from Sydney to St. Louis. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.