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 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 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 $2,084. Find deals

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

Dallas (DFW) – chosen by Cheapflights users on 33% of one-stop itineraries from Sydney to St. Louis on Cheapflights. Find deals

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

Departing from Sydney to St. Louis will take you 45h 09m. The distance from Sydney to St. Louis is about 14571 km.

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 $1,265. Additional round-trip tickets that might be worth considering are offered by Air Canada and Qantas Airways, with the lowest prices starting at $1,571 and $1,667, respectively. Users have found that United Airlines is 38% 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.

$929+ Flights from Sydney to St. Louis

Cheap flight deals from Sydney to St. Louis

Enter your travel dates to find the best prices.

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 5 December 2025.

Mon 26/111:20SYD - STL

2 stops45h 09mAir Canada

Mon 2/216:05STL - SYD

2 stops48h 30mAir Canada

Deal found 4/12$1,605

Mon 26/114:05SYD - STL

1 stop19h 09mMultiple Airlines

Mon 2/217:04STL - SYD

2 stops24h 51mMultiple Airlines

Deal found 4/12$1,875

Fri 1/509:10SYD - STL

1 stop29h 06mQantas Airways

Fri 29/506:30STL - SYD

1 stop33h 35mQantas Airways

Deal found 4/12$1,909

Mon 26/111:20SYD - STL

1 stop29h 39mAmerican Airlines

Mon 2/207:04STL - SYD

1 stop32h 56mAmerican Airlines

Deal found 4/12$2,039

Sat 14/211:20SYD - STL

2 stops45h 09mAir Canada

Wed 18/214:45STL - SYD

2 stops25h 50mAir Canada

Deal found 3/12$1,791

Mon 19/109:55SYD - STL

3 stops28h 03mMultiple Airlines

Mon 26/116:35STL - SYD

2 stops23h 10mMultiple Airlines

Deal found 4/12$1,942

Fri 1/509:20SYD - STL

2 stops44h 56mAir Canada

Fri 29/513:30STL - SYD

2 stops50h 50mAir Canada

Deal found 4/12$1,821

Sat 14/219:40SYD - STL

2 stops38h 25mQantas Airways

Wed 18/206:30STL - SYD

1 stop33h 30mQantas Airways

Deal found 2/12$2,173

Last-minute flights from Sydney to St. Louis
Discover last-minute flight deals from Sydney to St. Louis. Data last updated 5 December 2025 and is based on user searches.

Sat 10/114:00SYD - STL

2 stops40h 16mUnited Airlines

Sun 7/619:06STL - SYD

1 stop20h 49mUnited Airlines

Deal found 3/12$2,765

Sat 10/117:30SYD - STL

2 stops38h 17mQantas Airways

Sun 7/606:30STL - SYD

2 stops37h 55mQantas Airways

Deal found 4/12$2,917

Sat 10/116:00SYD - STL

2 stops40h 29mAir Canada

Sun 7/613:30STL - SYD

3 stops50h 50mAir Canada

Deal found 4/12$3,306

Sat 10/114:05SYD - STL

1 stop22h 46mAmerican Airlines

Sun 7/606:30STL - SYD

1 stop33h 35mAmerican Airlines

Deal found 3/12$3,353

Sat 10/111:45SYD - STL

3 stops26h 13mMultiple Airlines

Sun 7/608:00STL - SYD

3 stops33h 45mMultiple Airlines

Deal found 3/12$4,313

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 5 December 2025.

Sat 17/106:20SYD - STL

2 stops26h 54mMultiple Airlines

Deal found 4/12$929

Thu 15/107:05SYD - STL

2 stops24h 42mQantas Airways

Deal found 4/12$991

Mon 19/107:05SYD - STL

2 stops24h 42mQantas Airways

Deal found 4/12$1,030

Tue 16/1206:05SYD - STL

2 stops34h 52mQantas Airways

Deal found 3/12$1,056

Thu 15/116:20SYD - STL

3 stops37h 20mMultiple Airlines

Deal found 4/12$1,066

Fri 16/119:15SYD - STL

3 stops58h 25mMultiple Airlines

Deal found 4/12$1,104

Mon 19/114:05SYD - STL

1 stop37h 58mAmerican Airlines

Deal found 4/12$1,160

Thu 15/114:00SYD - STL

1 stop32h 11mUnited Airlines

Deal found 4/12$1,161

Mon 19/122:00SYD - STL

3 stops56h 54mMultiple Airlines

Deal found 4/12$1,220

Sun 18/121:25SYD - STL

3 stops57h 29mMultiple Airlines

Deal found 4/12$1,222

Sun 18/111:20SYD - STL

1 stop29h 39mAmerican Airlines

Deal found 4/12$1,254

Find flight deals from Sydney to St. Louis

Round-trip from	$1,782
One-way from	$929
Popular in	May
Cheapest in	August
Average price	$2,448

Air Canada
14/2-18/2
4 total stops
58h 00m total
Sydney to St. Louis

Search Deals

17/1
2 total stops
26h 54m total
Sydney to St. Louis

Search Deals

Highest demand for flights based on searches. 2% potential increase in price ($82 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($60 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 26/1

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Mon 2/2

16:05-09:35

2 stops48h 30m

$1,605

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 14/2

11:20-15:29

2 stops45h 09m

Lambert-St Louis

Wed 18/2

14:45-09:35

2 stops25h 50m

$1,791

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 1/5

09:20-15:16

2 stops44h 56m

Lambert-St Louis

Fri 29/5

13:30-07:20

2 stops50h 50m

$1,821

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 26/1

14:05-16:14

1 stop19h 09m

Lambert-St Louis

Mon 2/2

17:04-10:55

2 stops24h 51m

$1,875

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 1/5

09:10-23:16

1 stop29h 06m

Lambert-St Louis

Fri 29/5

06:30-07:05

1 stop33h 35m

$1,909

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 19/1

09:55-20:58

3 stops28h 03m

Lambert-St Louis

Mon 26/1

16:35-08:45

2 stops23h 10m

$1,942

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 26/1

11:20-23:59

1 stop29h 39m

Lambert-St Louis

Mon 2/2

07:04-09:00

1 stop32h 56m

$2,039

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 14/2

19:40-17:05

2 stops38h 25m

Lambert-St Louis

Wed 18/2

06:30-09:00

1 stop33h 30m

$2,173

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 18/1

07:05-23:59

2 stops33h 54m

$991

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 15/1

07:05-14:47

2 stops24h 42m

$991

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 20 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 $1,261). Flying from Sydney to St. Louis in December is currently the most expensive (average of $2,089). 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, 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

947 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

947 reviews

Qantas Airways

7.5

Good

947 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

9,066 reviews

Qantas Airways

7.5

Good

947 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

10,500 reviews

Qantas Airways

7.5

Good

947 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 45h 09m. The distance from Sydney to St. Louis is about 14571 km.
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 $1,265. Additional round-trip tickets that might be worth considering are offered by Air Canada and Qantas Airways, with the lowest prices starting at $1,571 and $1,667, respectively. Users have found that United Airlines is 38% 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 $1,261). Flying from Sydney to St. Louis in December is currently the most expensive (average of $2,089). 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

West End car hire

Top 3 airlines flying from Sydney to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,359	Average$2,369	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,571	Average$1,758	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Qantas Airways	Cheapest$1,667	Average$2,020	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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Cheap flights from Sydney to St. Louis from $929

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 17/1. 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

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 5 December 2025.

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 5 December 2025.

Find flight deals from Sydney to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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?

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, 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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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 5 December 2025.