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

Houston (IAH) – chosen by Cheapflights users on 29% 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?

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,969. Find deals

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 21m. 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 32m.

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

Departing from Sydney to St. Louis will take you 29h 22m. 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 $1,253. Additional round-trip tickets that might be worth considering are offered by Air Canada and Qantas Airways, with the lowest prices starting at $1,557 and $1,592, respectively. Users have found that United Airlines is 39% cheaper than the other options available to this destination.

What is the cheapest day to fly from Sydney to St. Louis?

Travellers seeking maximum savings on their Sydney to St. Louis flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 Air Canada, Qantas Airways and United Airlines. Something to consider prior to booking your flight.

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.

$764+ 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 $1,719 and $2,208 in March. The cheapest return flight price found within the last 3 days was $1,214 on Air Canada (12 Mar-16 Mar). Find deals

Cheap flight deals from Sydney to St. Louis

Round-trip from	$1,214
One-way from	$764
Popular in	January
Cheapest in	November
Average price	$2,045

Air Canada
12/3-16/3
4 total stops
93h 39m total
Sydney to St. Louis

Search Deals

United Airlines
16/12
2 total stops
27h 35m total
Sydney to St. Louis

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($504 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($52 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

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 18 September 2025.

Sun 2/1111:20SYD - STL

2 stops45h 09mAir Canada

Sun 9/1116:05STL - SYD

2 stops48h 30mAir Canada

Deal found 18/9$1,238

Sun 2/1111:20SYD - STL

1 stop29h 22mAmerican Airlines

Sun 9/1107:00STL - SYD

1 stop33h 00mAmerican Airlines

Deal found 18/9$1,267

Fri 31/1011:05SYD - STL

2 stops21h 23mUnited Airlines

Fri 7/1116:43STL - SYD

2 stops45h 17mUnited Airlines

Deal found 16/9$1,277

Fri 31/1011:50SYD - STL

1 stop20h 00mVirgin Australia

Fri 7/1108:20STL - SYD

1 stop29h 40mVirgin Australia

Deal found 16/9$1,665

Fri 31/1011:45SYD - STL

2 stops23h 02mMultiple Airlines

Fri 7/1109:00STL - SYD

3 stops30h 45mMultiple Airlines

Deal found 16/9$1,938

Thu 2/1010:20SYD - STL

2 stops26h 40mUnited Airlines

Mon 6/1008:25STL - SYD

2 stops31h 35mUnited Airlines

Deal found 16/9$1,980

Sun 2/1109:55SYD - STL

2 stops25h 51mMultiple Airlines

Sun 9/1108:00STL - SYD

3 stops31h 45mMultiple Airlines

Deal found 18/9$2,164

Thu 2/1009:10SYD - STL

1 stop28h 49mAmerican Airlines

Mon 6/1006:39STL - SYD

1 stop33h 26mAmerican Airlines

Deal found 16/9$2,670

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 18 September 2025.

Thu 12/310:20SYD - STL

2 stops45h 09mAir Canada

Mon 16/316:05STL - SYD

2 stops48h 30mAir Canada

Deal found 15/9$1,214

Sun 2/1111:20SYD - STL

1 stop29h 22mAmerican Airlines

Sun 9/1107:00STL - SYD

1 stop33h 00mAmerican Airlines

Deal found 18/9$1,267

Fri 31/1011:05SYD - STL

2 stops21h 23mUnited Airlines

Fri 7/1116:43STL - SYD

2 stops45h 17mUnited Airlines

Deal found 16/9$1,277

Sun 2/1111:20SYD - STL

2 stops45h 09mAir Canada

Sun 9/1116:05STL - SYD

2 stops48h 30mAir Canada

Deal found 18/9$1,238

Thu 12/311:50SYD - STL

1 stop24h 31mUnited Airlines

Mon 16/317:18STL - SYD

2 stops23h 57mUnited Airlines

Deal found 15/9$1,437

Last-minute flights from Sydney to St. Louis
Discover last-minute flight deals from Sydney to St. Louis. Data last updated 18 September 2025 and is based on user searches.

Thu 2/1010:20SYD - STL

2 stops26h 40mUnited Airlines

Mon 6/1008:25STL - SYD

2 stops31h 35mUnited Airlines

Deal found 16/9$1,980

Thu 2/1009:10SYD - STL

1 stop28h 49mAmerican Airlines

Mon 6/1006:39STL - SYD

1 stop33h 26mAmerican Airlines

Deal found 16/9$2,670

Thu 2/1009:20SYD - STL

2 stops29h 38mAir Canada

Mon 6/1011:10STL - SYD

3 stops29h 10mAir Canada

Deal found 16/9$5,008

Fri 31/1011:05SYD - STL

2 stops21h 23mUnited Airlines

Fri 7/1116:43STL - SYD

2 stops45h 17mUnited Airlines

Deal found 16/9$1,277

Fri 31/1011:50SYD - STL

1 stop20h 00mVirgin Australia

Fri 7/1108:20STL - SYD

1 stop29h 40mVirgin Australia

Deal found 16/9$1,665

Fri 31/1011:45SYD - STL

2 stops23h 02mMultiple Airlines

Fri 7/1109:00STL - SYD

3 stops30h 45mMultiple Airlines

Deal found 16/9$1,938

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 18 September 2025.

Tue 16/1212:10SYD - STL

2 stops27h 35mUnited Airlines

Deal found 17/9$764

Sun 14/1212:10SYD - STL

1 stop21h 17mUnited Airlines

Deal found 17/9$770

Sat 13/1211:20SYD - STL

2 stops27h 38mUnited Airlines

Deal found 17/9$785

Sat 13/1216:05SYD - STL

3 stops48h 54mMultiple Airlines

Deal found 17/9$1,330

Sun 14/1214:50SYD - STL

3 stops50h 09mMultiple Airlines

Deal found 17/9$1,343

Mon 15/1214:00SYD - STL

3 stops41h 27mMultiple Airlines

Deal found 17/9$1,424

Tue 16/1216:20SYD - STL

3 stops39h 07mMultiple Airlines

Deal found 17/9$1,658

Wed 17/1211:50SYD - STL

1 stop27h 08mUnited Airlines

Deal found 17/9$1,739

Thu 18/1209:00SYD - STL

3 stops48h 26mMultiple Airlines

Deal found 17/9$1,785

Wed 17/1209:00SYD - STL

3 stops48h 33mMultiple Airlines

Deal found 17/9$1,808

Fri 19/1214:00SYD - STL

1 stop25h 30mUnited Airlines

Deal found 17/9$1,835

Fly from

Fly to

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

10:20-15:29

2 stops45h 09m

Lambert-St Louis

Mon 16/3

16:05-08:35

2 stops48h 30m

$1,214

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 2/11

11:20-16:29

2 stops45h 09m

Lambert-St Louis

Sun 9/11

16:05-09:35

2 stops48h 30m

$1,238

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 2/11

11:20-00:42

1 stop29h 22m

Lambert-St Louis

Sun 9/11

07:00-09:00

1 stop33h 00m

$1,267

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 31/10

11:05-16:28

2 stops21h 23m

Lambert-St Louis

Fri 7/11

16:43-07:00

2 stops45h 17m

$1,277

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

11:50-20:21

1 stop24h 31m

Lambert-St Louis

Mon 16/3

17:18-09:15

2 stops23h 57m

$1,437

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 16/12

12:10-22:45

2 stops27h 35m

$764

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 14/12

12:10-16:27

1 stop21h 17m

$770

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 13/12

11:20-21:58

2 stops27h 38m

$785

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 15/12

11:20-20:57

2 stops26h 37m

$785

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 14/12

14:50-23:59

3 stops50h 09m

$1,343

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 14 results

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

Prices

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

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 a feel of what it's like to fly with Qantas Airways, United Airlines, andAir Canada 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

907 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

SYD - BNE

Great. Except I haven’t claimed my free lounge passes since 2022 on my Qantas credit card. That’s lots of flights I would have booked if you’d reminded me

Qantas Airways

7.5

Good

907 reviews

Qantas Airways

7.5

Good

907 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

SYD - BNE

Great. Except I haven’t claimed my free lounge passes since 2022 on my Qantas credit card. That’s lots of flights I would have booked if you’d reminded me

United Airlines

7.4

Good

8,926 reviews

Qantas Airways

7.5

Good

907 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

SYD - BNE

Great. Except I haven’t claimed my free lounge passes since 2022 on my Qantas credit card. That’s lots of flights I would have booked if you’d reminded me

Air Canada

7.1

Good

10,000 reviews

Qantas Airways

7.5

Good

907 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sept 2025

SYD - BNE

Great. Except I haven’t claimed my free lounge passes since 2022 on my Qantas credit card. That’s lots of flights I would have booked if you’d reminded me

Related info for your journey

How long is the flight from Sydney to St. Louis?
Departing from Sydney to St. Louis will take you 29h 22m. 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 $1,253. Additional round-trip tickets that might be worth considering are offered by Air Canada and Qantas Airways, with the lowest prices starting at $1,557 and $1,592, respectively. Users have found that United Airlines is 39% 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

Alternative routes for Sydney to St. Louis

Sydney to Kansas City flights

Complete your trip

St. Louis car hire

Lambert-St Louis Airport car hire

Springfield Capital Airport car hire

Belleville Airport car hire

Marion Williamson County Airport car hire

Central West End car hire

Midtown car hire

Soulard car hire

Top 3 airlines flying from Sydney to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,253	Average$2,364	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,557	Average$1,774	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Qantas Airways	Cheapest$1,592	Average$2,387	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Sydney to St. Louis from $764

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 16/12. 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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 18 September 2025.

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 18 September 2025.

Cheapflights Fare Finder

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 time of day to fly from SYD to STL?

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 fastest stopover option 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, andAir Canada 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?

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

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

Top 3 airlines flying from Sydney to St. Louis

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

Book with Flexibility

Travel Smart

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 18 September 2025.