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 $1,813.

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

Dallas (DFW) – chosen by Cheapflights users on 67% of one-stop itineraries from Sydney to St. Louis on Cheapflights.

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

Flights via Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 2h 35m.

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 58m.

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

Departing from Sydney to St. Louis will take you 30h 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 $1,425. Additional round-trip tickets that might be worth considering are offered by American Airlines and Qantas Airways, with the lowest prices starting at $1,472 and $1,500, respectively. Users have found that United Airlines is 21% 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.

$1,620+ 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

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 24 September 2026.

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1006:32 -

1 stop32h 23m

Deal found 23/9$1,620

Fri 6/1110:40 -

2 stops30h 14m

Fri 13/1112:28 -

2 stops27h 02m

Deal found 21/9$1,883

Fri 6/1114:05 -

1 stop24h 54m

Fri 13/1108:10 -

1 stop29h 15m

Deal found 21/9$1,886

Wed 21/1015:50 -

2 stops38h 40m

Sat 24/1006:02 -

2 stops45h 18m

Deal found 23/9$2,539

Wed 21/1022:05 -

3 stops39h 16m

Sat 24/1008:00 -

3 stops67h 25m

Deal found 23/9$2,666

Find flight deals from Sydney to St. Louis

Round-trip from	$1,620
Popular in	April
Cheapest in	July
Average price	$1,901

American Airlines
21/10-24/10
3 total stops
75h 57m total
Sydney to St. Louis

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($267 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($64 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

06:32-06:55

1 stop32h 23m

$1,620

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Fri 6/11

10:40-23:54

2 stops30h 14m

Lambert-St Louis

Fri 13/11

12:28-08:30

2 stops27h 02m

$1,883

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

15:50-14:30

2 stops38h 40m

Lambert-St Louis

Sat 24/10

06:02-19:20

2 stops45h 18m

$2,539

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

22:05-21:21

3 stops39h 16m

Lambert-St Louis

Sat 24/10

08:00-19:25

3 stops67h 25m

$2,666

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Thu 17/12

11:50-05:26

1 stop34h 36m

Lambert-St Louis

Sun 27/12

06:11-09:20

1 stop34h 09m

$2,919

Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

11:20-18:43

1 stop23h 23m

Lambert-St Louis

Sat 24/10

15:12-07:00

1 stop23h 48m

$2,994

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Fri 18/12

11:50-21:08

2 stops26h 18m

Lambert-St Louis

Sat 26/12

09:35-09:05

2 stops30h 30m

$3,221

Flights are sorted by cheapest return flights first.

Deals found on 23/9

Sorted 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, July is the cheapest month in which you can book a flight from Sydney to St. Louis (average of $1,499). Flying from Sydney to St. Louis in April is currently the most expensive (average of $2,301). 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.

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

Airfare is below average for this route at the moment.

Sydney to St. Louis flights typically cost between $1,745 and $2,018 in October.
The cheapest return price found within the last 5 days was $1,620 on American Airlines (21 Oct–24 Oct).

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

1,101 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

1,101 reviews

Qantas Airways

7.5

Good

1,101 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

United Airlines

7.4

Good

10,233 reviews

Qantas Airways

7.5

Good

1,101 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

American Airlines

7.0

Good

12,073 reviews

Qantas Airways

7.5

Good

1,101 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 30h 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 $1,425. Additional round-trip tickets that might be worth considering are offered by American Airlines and Qantas Airways, with the lowest prices starting at $1,472 and $1,500, respectively. Users have found that United Airlines is 21% 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, July is the cheapest month in which you can book a flight from Sydney to St. Louis (average of $1,499). Flying from Sydney to St. Louis in April is currently the most expensive (average of $2,301). 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

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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$1,425	Average$2,235	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$1,472	Average$2,003	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Qantas Airways	Cheapest$1,500	Average$1,767	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 $1,620

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/10. 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 24 September 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 24 September 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 24 September 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 24 September 2026.

Last-minute flights from Sydney to St. LouisDiscover last-minute flight deals from Sydney to St. Louis. Data last updated 24 September 2026 and is based on user searches.

Discover last-minute flight deals from Sydney to St. Louis. Data last updated 24 September 2026 and is based on user searches.

Find flight deals from Sydney to St. Louis

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Average price

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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?

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

Airfare is below average for this route at the moment.

Sydney to St. Louis flights typically cost between $1,745 and $2,018 in October.The cheapest return price found within the last 5 days was $1,620 on American Airlines (21 Oct–24 Oct).

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

Dallas (DFW) – chosen by Cheapflights users on 67% 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 $1,813.

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 58m.

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

Flights via Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 2h 35m.

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

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

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 24 September 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 24 September 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 24 September 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 24 September 2026.

Last-minute flights from Sydney to St. Louis
Discover last-minute flight deals from Sydney to St. Louis. Data last updated 24 September 2026 and is based on user searches.

Sydney to St. Louis flights typically cost between $1,745 and $2,018 in October.
The cheapest return price found within the last 5 days was $1,620 on American Airlines (21 Oct–24 Oct).