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 25m. 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 $2,000. 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. Find deals

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

Houston (IAH) – chosen by Cheapflights users on 32% of one-stop itineraries from Sydney to St. Louis on Cheapflights.

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

Departing from Sydney to St. Louis will take you 22h 49m. 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 $1,273. Additional round-trip tickets that might be worth considering are offered by Air Canada and Qantas Airways, with the lowest prices starting at $1,582 and $1,679, respectively. Users have found that United Airlines is 37% 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 United Airlines, Qantas Airways and Air Canada. 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.

$1,128+ Cheap Flights from Sydney to St. Louis

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

Airfare is typical for this route at the moment. Sydney to St. Louis flights typically cost between $1,273 and $1,622 in March. The cheapest return flight price found within the last 3 days was $1,337 on Air Canada (12 Mar-16 Mar). Find deals

Cheap flight deals from Sydney to St. Louis

Round-trip from	$1,337
One-way from	$1,128
Popular in	December
Cheapest in	November
Average price	$1,910

Air Canada
12/3-16/3
4 total stops
70h 39m total
Sydney to St. Louis

Search Deals

Air Canada
25/12
2 total stops
47h 22m total
Sydney to St. Louis

Search Deals

High demand for flights, 0% potential price rise

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($61 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find flight deals from Sydney to St. Louis

Enter your travel dates to find the best prices.

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 31 October 2025.

Mon 24/1111:20SYD - STL

2 stops45h 09mAir Canada

Sun 30/1116:05STL - SYD

2 stops48h 30mAir Canada

Deal found 30/10$1,393

Mon 24/1111:20SYD - STL

1 stop29h 22mAmerican Airlines

Sun 30/1107:00STL - SYD

1 stop33h 00mAmerican Airlines

Deal found 30/10$1,483

Mon 24/1111:50SYD - STL

2 stops22h 49mUnited Airlines

Sun 30/1111:20STL - SYD

1 stop26h 40mUnited Airlines

Deal found 30/10$1,509

Sun 14/1217:45SYD - STL

1 stop23h 12mAmerican Airlines

Sun 21/1206:20STL - SYD

1 stop32h 05mAmerican Airlines

Deal found 30/10$2,630

Sun 14/1217:45SYD - STL

1 stop23h 12mQantas Airways

Sun 21/1206:20STL - SYD

1 stop32h 05mQantas Airways

Deal found 30/10$2,720

Sun 14/1208:30SYD - STL

3 stops27h 35mMultiple Airlines

Sun 21/1211:41STL - SYD

2 stops27h 54mMultiple Airlines

Deal found 30/10$4,484

Sun 14/1211:20SYD - STL

3 stops28h 25mAir Canada

Sun 21/1208:05STL - SYD

2 stops32h 30mAir Canada

Deal found 30/10$6,234

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 31 October 2025.

Thu 12/310:25SYD - STL

2 stops45h 04mAir Canada

Mon 16/315:00STL - SYD

2 stops25h 35mAir Canada

Deal found 29/10$1,337

Mon 24/1111:20SYD - STL

1 stop29h 22mAmerican Airlines

Sun 30/1107:00STL - SYD

1 stop33h 00mAmerican Airlines

Deal found 30/10$1,483

Mon 24/1111:50SYD - STL

2 stops22h 49mUnited Airlines

Sun 30/1111:20STL - SYD

1 stop26h 40mUnited Airlines

Deal found 30/10$1,509

Sat 10/114:15SYD - STL

2 stops24h 20mDelta

Sun 7/606:00STL - SYD

2 stops33h 35mDelta

Deal found 29/10$2,414

Mon 24/1111:20SYD - STL

2 stops45h 09mAir Canada

Sun 30/1116:05STL - SYD

2 stops48h 30mAir Canada

Deal found 30/10$1,393

Sat 10/108:45SYD - STL

2 stops28h 06mAmerican Airlines

Sun 7/606:30STL - SYD

1 stop33h 35mAmerican Airlines

Deal found 30/10$1,975

Thu 12/311:50SYD - STL

1 stop20h 04mUnited Airlines

Mon 16/316:35STL - SYD

1 stop22h 25mUnited Airlines

Deal found 28/10$2,523

Thu 12/311:20SYD - STL

1 stop27h 49mAmerican Airlines

Mon 16/316:43STL - SYD

2 stops24h 17mAmerican Airlines

Deal found 28/10$2,497

Last-minute flights from Sydney to St. Louis
Discover last-minute flight deals from Sydney to St. Louis. Data last updated 31 October 2025 and is based on user searches.

Mon 24/1111:20SYD - STL

2 stops45h 09mAir Canada

Sun 30/1116:05STL - SYD

2 stops48h 30mAir Canada

Deal found 30/10$1,393

Mon 24/1111:20SYD - STL

1 stop29h 22mAmerican Airlines

Sun 30/1107:00STL - SYD

1 stop33h 00mAmerican Airlines

Deal found 30/10$1,483

Mon 24/1111:50SYD - STL

2 stops22h 49mUnited Airlines

Sun 30/1111:20STL - SYD

1 stop26h 40mUnited Airlines

Deal found 30/10$1,509

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 31 October 2025.

Thu 25/1216:00SYD - STL

2 stops47h 22mAir Canada

Deal found 30/10$1,128

Wed 24/1211:50SYD - STL

2 stops27h 53mUnited Airlines

Deal found 30/10$1,171

Fri 26/1214:00SYD - STL

2 stops25h 22mUnited Airlines

Deal found 30/10$1,276

Wed 24/1221:40SYD - STL

3 stops53h 22mMultiple Airlines

Deal found 30/10$1,495

Thu 25/1221:40SYD - STL

3 stops40h 45mMultiple Airlines

Deal found 30/10$1,498

Tue 16/1212:10SYD - STL

1 stop21h 17mMultiple Airlines

Deal found 30/10$1,648

Tue 23/1221:55SYD - STL

2 stops34h 05mQantas Airways

Deal found 30/10$1,701

Tue 23/1217:45SYD - STL

1 stop23h 06mAmerican Airlines

Deal found 30/10$1,741

Tue 23/1211:45SYD - STL

3 stops39h 17mMultiple Airlines

Deal found 30/10$1,795

Sat 27/1216:05SYD - STL

3 stops46h 20mMultiple Airlines

Deal found 30/10$1,829

Fly from

Fly to

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

10:25-15:29

2 stops45h 04m

Lambert-St Louis

Mon 16/3

15:00-08:35

2 stops25h 35m

$1,337

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 24/11

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Sun 30/11

16:05-09:35

2 stops48h 30m

$1,393

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 24/11

11:20-23:42

1 stop29h 22m

Lambert-St Louis

Sun 30/11

07:00-09:00

1 stop33h 00m

$1,483

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 24/11

11:50-17:39

2 stops22h 49m

Lambert-St Louis

Sun 30/11

11:20-07:00

1 stop26h 40m

$1,509

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 10/1

08:45-19:51

2 stops28h 06m

Lambert-St Louis

Sun 7/6

06:30-07:05

1 stop33h 35m

$1,975

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 10/1

14:15-21:35

2 stops24h 20m

Lambert-St Louis

Sun 7/6

06:00-06:35

2 stops33h 35m

$2,414

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

11:20-23:09

1 stop27h 49m

Lambert-St Louis

Mon 16/3

16:43-09:00

2 stops24h 17m

$2,497

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

11:50-15:54

1 stop20h 04m

Lambert-St Louis

Mon 16/3

16:35-07:00

1 stop22h 25m

$2,523

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 24/12

11:50-22:43

2 stops27h 53m

$1,171

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 25/12

11:50-09:49

1 stop38h 59m

$1,171

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 16 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 month to book a flight from Sydney to St. Louis?

Currently, November is the cheapest month in which you can book a flight from Sydney to St. Louis (average of $1,270). Flying from Sydney to St. Louis in December is currently the most expensive (average of $2,103). 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, 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

926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

Qantas Airways

7.5

Good

926 reviews

Qantas Airways

7.5

Good

926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

United Airlines

7.4

Good

8,995 reviews

Qantas Airways

7.5

Good

926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

Air Canada

7.1

Good

10,385 reviews

Qantas Airways

7.5

Good

926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

Related info for your journey

How long is the flight from Sydney to St. Louis?
Departing from Sydney to St. Louis will take you 22h 49m. 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 $1,273. Additional round-trip tickets that might be worth considering are offered by Air Canada and Qantas Airways, with the lowest prices starting at $1,582 and $1,679, respectively. Users have found that United Airlines is 37% 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, November is the cheapest month in which you can book a flight from Sydney to St. Louis (average of $1,270). Flying from Sydney to St. Louis in December is currently the most expensive (average of $2,103). 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

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$1,273	Average$2,389	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,582	Average$1,793	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Qantas Airways	Cheapest$1,679	Average$2,130	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.

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

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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 $1,128

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 25/12. 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 31 October 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 31 October 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 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 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?

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

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?

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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 31 October 2025.