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. Find deals

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 26m. Find deals

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

Dallas (DFW) – chosen by Cheapflights users on 50% of one-stop itineraries from Sydney to St. Louis on Cheapflights. Find deals

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

Dallas (DFW) is the most affordable one-stop option, with an average return flight price of $1,830. Find deals

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

Departing from Sydney to St. Louis will take you 26h 02m. 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 $1,168. Additional round-trip tickets that might be worth considering are offered by Qantas Airways and American Airlines, with the lowest prices starting at $1,519 and $1,611, respectively. Users have found that United Airlines is 36% 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.

$892+ Cheap Flights from Sydney to St. Louis

Q: 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 $2,198 and $1,693 in June. The cheapest return flight price found within the last 3 days was $1,431 on American Airlines (24 June-18 Aug).

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 4 June 2026.

Wed 24/617:50

SYD

STL

2 stops29h 41m

American Airlines

Tue 18/810:16

STL

SYD

2 stops29h 49m

American Airlines

Deal found 2/6$1,431

Wed 24/617:50

SYD

STL

1 stop21h 06m

American Airlines

Sun 16/806:00

STL

SYD

1 stop34h 30m

American Airlines

Deal found 2/6$1,441

Mon 22/610:20

SYD

STL

1 stop22h 57m

United Airlines

Mon 17/813:36

STL

SYD

2 stops26h 19m

United Airlines

Deal found 2/6$1,447

Wed 8/709:15

SYD

STL

2 stops30h 26m

Delta

Mon 20/714:30

STL

SYD

2 stops25h 20m

Delta

Deal found 31/5$1,450

Sun 21/609:10

SYD

STL

1 stop29h 46m

American Airlines

Wed 19/817:11

STL

SYD

2 stops22h 54m

American Airlines

Deal found 2/6$1,490

Sat 20/617:50

SYD

STL

1 stop21h 06m

American Airlines

Wed 19/810:16

STL

SYD

2 stops29h 49m

American Airlines

Deal found 2/6$1,501

Wed 24/617:50

SYD

STL

1 stop21h 06m

American Airlines

Fri 21/812:45

STL

SYD

2 stops26h 40m

American Airlines

Deal found 2/6$1,513

Fri 26/610:20

SYD

STL

1 stop22h 57m

United Airlines

Wed 19/808:42

STL

SYD

1 stop31h 13m

United Airlines

Deal found 2/6$1,517

Mon 10/810:20

SYD

STL

2 stops28h 37m

United Airlines

Fri 4/908:42

STL

SYD

1 stop31h 13m

United Airlines

Deal found 31/5$1,520

Tue 17/1114:05

SYD

STL

1 stop19h 35m

American Airlines

Tue 1/1207:00

STL

SYD

1 stop33h 00m

American Airlines

Deal found 2/6$1,550

Sun 21/609:10

SYD

STL

1 stop29h 46m

American Airlines

Thu 20/815:35

STL

SYD

2 stops24h 30m

American Airlines

Deal found 2/6$1,561

Sat 20/617:50

SYD

STL

1 stop21h 06m

American Airlines

Sat 22/813:25

STL

SYD

2 stops26h 40m

American Airlines

Deal found 2/6$1,571

Find flight deals from Sydney to St. Louis

Round-trip from	$1,431
One-way from	$892
Popular in	July
Cheapest in	September
Average price	$2,027

American Airlines
24/6-18/8
4 total stops
59h 30m total
Sydney to St. Louis

Search Deals

Air Canada
30/7
2 total stops
48h 22m total
Sydney to St. Louis

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($203 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 June 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 8/7

09:15-00:41

2 stops30h 26m

Lambert-St Louis

Mon 20/7

14:30-06:50

2 stops25h 20m

$1,450

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

10:20-23:57

2 stops28h 37m

Lambert-St Louis

Fri 4/9

08:42-06:55

1 stop31h 13m

$1,520

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 7/8

09:20-20:22

2 stops26h 02m

Lambert-St Louis

Tue 11/8

08:55-07:20

2 stops31h 25m

$1,690

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 22/7

09:10-16:40

2 stops22h 30m

Lambert-St Louis

Sun 26/7

06:37-07:05

1 stop33h 28m

$1,690

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 17/11

11:50-18:38

1 stop23h 48m

Lambert-St Louis

Tue 1/12

15:15-09:05

2 stops24h 50m

$1,717

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 7/8

09:10-22:59

1 stop28h 49m

Lambert-St Louis

Tue 11/8

17:11-07:05

2 stops22h 54m

$1,736

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 25/6

09:30-23:57

2 stops29h 27m

Lambert-St Louis

Thu 20/8

08:42-06:55

1 stop31h 13m

$1,922

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 25/6

09:30-23:57

2 stops29h 27m

Lambert-St Louis

Fri 21/8

08:42-06:55

1 stop31h 13m

$1,922

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 8/7

09:30-23:57

2 stops29h 27m

Lambert-St Louis

Mon 20/7

13:38-06:55

2 stops26h 17m

$1,971

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 22/7

09:20-23:29

3 stops29h 09m

Lambert-St Louis

Sun 26/7

10:20-07:20

3 stops30h 00m

$2,068

Flights are sorted by cheapest return flights first.

Deals found on 1/6

Showing 1-10 of 19 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

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 $1,325). Flying from Sydney to St. Louis in July is currently the most expensive (average of $2,319). 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?

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

1,043 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

1,043 reviews

Qantas Airways

7.5

Good

1,043 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

United Airlines

7.4

Good

9,778 reviews

Qantas Airways

7.5

Good

1,043 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Tania,May 2026

SYD - DFW

American Airlines

7.1

Good

11,646 reviews

Qantas Airways

7.5

Good

1,043 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 26h 02m. 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 $1,168. Additional round-trip tickets that might be worth considering are offered by Qantas Airways and American Airlines, with the lowest prices starting at $1,519 and $1,611, respectively. Users have found that United Airlines is 36% 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 $1,325). Flying from Sydney to St. Louis in July is currently the most expensive (average of $2,319). 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

Sydney to Kansas City flights

Top 3 airlines flying from Sydney to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,168	Average$1,904	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Qantas Airways	Cheapest$1,519	Average$1,800	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
American Airlines	Cheapest$1,611	Average$1,754	FlexibilityNo cancel fee	On-time71%	Search American Airlines 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.

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Cheap flights from Sydney to St. Louis from $892

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 30/7. 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 4 June 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 4 June 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 4 June 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 4 June 2026.

Last-minute flights from Sydney to St. LouisDiscover last-minute flight deals from Sydney to St. Louis. Data last updated 4 June 2026 and is based on user searches.

Discover last-minute flight deals from Sydney to St. Louis. Data last updated 4 June 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 4 June 2026.

Search for one-way flight options from Sydney to St. Louis. Find affordable one-way fares based on user searches. Data last updated 4 June 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

Everything you need to know about your flight from Sydney to St. Louis

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?

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

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

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

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

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

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.

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

See prices for flight routes from nearby airports that may be better suited for you.

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 4 June 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 4 June 2026.

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Top 3 airlines flying from Sydney to St. Louis

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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 4 June 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 4 June 2026.

Last-minute flights from Sydney to St. Louis
Discover last-minute flight deals from Sydney to St. Louis. Data last updated 4 June 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 4 June 2026.