Which airports can I use when flying from St. Louis to Sydney?

Flights from St. Louis to Sydney usually depart from Lambert-St Louis (STL) and arrive at Sydney Kingsford Smith (SYD).

Which cabin classes can I book on flights from St. Louis to Sydney?

Only Economy class is available on flights from St. Louis to Sydney.

Which airports do connecting flights from St. Louis to Sydney pass through?

One-stop flights from St. Louis to Sydney most commonly connect through: • Dallas/Fort Worth (DFW) – 70% of one-stop connections • San Francisco (SFO) – 25% of one-stop connections • Houston George Bush Intcntl (IAH) – 4% of one-stop connections • Los Angeles (LAX) – 1% of one-stop connections

Can I save money by using flexible dates for flights from St. Louis to Sydney?

Yes. Flexible dates can save you up to 25% on flights from St. Louis to Sydney. Tuesday is the cheapest departure day at $1,820 return on average, while Saturday is the most expensive at $2,398, a difference of $578. KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Sydney?

Some of the most popular sights in Sydney are Sydney Opera House, Star Casino, and Capitol Theatre. These are among the most viewed places in Sydney on KAYAK.

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

A direct flight from St. Louis to Sydney takes 00m, covering 23,449 km.

Do I need a passport to fly from St. Louis to Sydney?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from St. Louis to Sydney looking right now?

One-way fares from St. Louis to Sydney are currently lower than usual. Average one-way flight prices are about $1,254, which is 10% below the typical average for this route.

How much time can I save by choosing a different stopover airport from St. Louis to Sydney?

Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time of 20h 58m, compared to 21h 35m via Houston George Bush Intcntl (IAH) and 22h 12m via San Francisco (SFO).

What is the time difference between St. Louis and Sydney?

Sydney is 16 hours ahead of St. Louis (Eastern Australia Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Which car hire options are available at Sydney Kingsford Smith Airport (SYD)?

Sydney Kingsford Smith Airport (SYD) hosts 5 major car hire companies, with daily rates starting from around $15 for economy cars. Top options include: • East Coast Car Rentals • Bargain Car Rentals • YESDRIVE CAR RENTAL • No Birds • EverythingFleet

How much should I expect to pay for a St. Louis to Sydney flight?

Return flights from St. Louis to Sydney range from $1,847 to $2,387, with an average of $2,037 over the past 12 months. Anything below $1,847 counts as a good deal.

What's the cheapest day of the week to fly from St. Louis to Sydney?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from St. Louis to Sydney. It’s 11% cheaper than the average day, while Saturday is the most expensive, with prices 17% higher.

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

•July is the cheapest month to fly from St. Louis to Sydney at $1,649 return. •December ($2,543) and October ($2,352) are the most expensive months. •The price difference between flying in the cheapest and most expensive months is 54% on average. This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Which airline is the cheapest to fly from St. Louis to Sydney?

Air Canada ($1,546) and United Airlines ($1,703) are the cheapest airlines to fly return from St. Louis to Sydney according to KAYAK data over the last 5 days.

What is the most popular stopover airport when flying from St. Louis to Sydney?

Dallas/Fort Worth (DFW) is the most popular stopover for the St. Louis to Sydney route. 70% of KAYAK users who booked 1-stop return journeys over the past 3 months connected via DFW.

What is the cheapest stopover airport when flying from St. Louis to Sydney?

Flights via Los Angeles (LAX) offer the most affordable fares, with an average return price of $1,780. Based on KAYAK data over the past 3 months.

When flying from St. Louis to Sydney, which airport offers the shortest stopover?

Dallas/Fort Worth (DFW) had the shortest average connection time for St. Louis to Sydney stopovers at 12h 13m over the past 3 months.

$997 CHEAP FLIGHTS from St. Louis to Sydney (STL - SYD)

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest return flight

$1,541

Typical prices: $1,847-$2,387

Multiple Airlines

Wed 31/1Tue 13/2

STL - SYD • 2 stops

Cheapest one-way flight

$1,048

Typical prices: $1,199-$1,536

Qantas Airways

Sat 10/3

STL - SYD • 1 stop

Direct flights

Not available

There are currently no direct flights between St. Louis and Sydney. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

July

Cheapest • 19% price drop

December

Most popular

Good to know

Top stopover airports

Los Angeles (LAX)

Cheapest • Avg $1,780 (return)

Dallas/Fort Worth (DFW)

Shortest trip • 20h 58m (one-way)

Insights

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you enjoy your trip to Sydney!

Flight Deals

Cheap Flights from St. Louis to Sydney (STL-SYD)

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

Recent return flight deals from St. Louis to Sydney

Sun, 31 Jan - Sat, 13 Feb

11:00 - 09:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

29h 35m2 stops Newark Vancouver Intl

11:20 - 15:26SYD Sydney Kingsford Smith-STL Lambert-St Louis

45h 06m2 stops Vancouver Intl Toronto Pearson Intl

$1,541Multiple Airlines

1 day ago

Mon, 8 Mar - Sat, 20 Mar

13:20 - 09:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

27h 15m2 stops Denver Intl Vancouver Intl

10:20 - 17:09SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 49m2 stops Vancouver Intl Chicago O'Hare Intl

$1,544Multiple Airlines

3+ days ago

Wed, 18 Nov - Wed, 25 Nov

16:05 - 09:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

48h 30m2 stops Toronto Pearson Intl Vancouver Intl

11:20 - 15:26SYD Sydney Kingsford Smith-STL Lambert-St Louis

45h 06m2 stops Vancouver Intl Toronto Pearson Intl

$1,546Air Canada

3+ days ago

Fri, 12 Feb - Tue, 16 Feb

16:05 - 09:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

48h 30m2 stops Toronto Pearson Intl Vancouver Intl

11:20 - 15:26SYD Sydney Kingsford Smith-STL Lambert-St Louis

45h 06m2 stops Vancouver Intl Toronto Pearson Intl

$1,547Air Canada

1 day ago

Fri, 12 Feb - Fri, 19 Feb

19:10 - 09:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

45h 25m2 stops Chicago O'Hare Intl Vancouver Intl

11:20 - 10:32SYD Sydney Kingsford Smith-STL Lambert-St Louis

40h 12m3 stops Vancouver Intl Toronto Pearson Intl Chicago O'Hare Intl

$1,585Air Canada

1 day ago

Mon, 8 Mar - Sat, 20 Mar

13:20 - 09:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

27h 15m2 stops Denver Intl Vancouver Intl

10:20 - 21:13SYD Sydney Kingsford Smith-STL Lambert-St Louis

26h 53m2 stops Vancouver Intl Chicago O'Hare Intl

$1,591Air Canada

3+ days ago

Fri, 12 Feb - Fri, 19 Feb

16:05 - 09:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

48h 30m2 stops Toronto Pearson Intl Vancouver Intl

11:20 - 15:26SYD Sydney Kingsford Smith-STL Lambert-St Louis

45h 06m2 stops Vancouver Intl Toronto Pearson Intl

$1,601Air Canada

1 day ago

Sun, 31 Jan - Sat, 13 Feb

10:45 - 09:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

29h 50m2 stops Chicago O'Hare Intl Vancouver Intl

11:20 - 12:06SYD Sydney Kingsford Smith-STL Lambert-St Louis

41h 46m3 stops Vancouver Intl Toronto Pearson Intl Chicago O'Hare Intl

$1,602Air Canada

1 day ago

Wed, 18 Nov - Wed, 25 Nov

14:55 - 07:00STL Lambert-St Louis-SYD Sydney Kingsford Smith

23h 05m1 stop Houston George Bush Intcntl

09:15 - 16:50SYD Sydney Kingsford Smith-STL Lambert-St Louis

24h 35m1 stop Houston George Bush Intcntl

$1,703United Airlines

3+ days ago

Tue, 24 Nov - Tue, 1 Dec

11:14 - 06:25STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 11m2 stops Chicago O'Hare Intl Los Angeles

11:10 - 20:17SYD Sydney Kingsford Smith-STL Lambert-St Louis

26h 07m2 stops Los Angeles Dallas/Fort Worth

$1,706American Airlines

1 hour ago

Recent last minute flight deals from St. Louis to Sydney

Tue, 27 Oct - Tue, 10 Nov

13:40 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 55m2 stops Denver Intl Vancouver Intl

11:20 - 12:10SYD Sydney Kingsford Smith-STL Lambert-St Louis

41h 50m3 stops Vancouver Intl Toronto Pearson Intl Chicago O'Hare Intl

$1,470Air Canada

1 day ago

Tue, 27 Oct - Tue, 10 Nov

13:40 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 55m2 stops Denver Intl Vancouver Intl

11:20 - 15:23SYD Sydney Kingsford Smith-STL Lambert-St Louis

45h 03m2 stops Vancouver Intl Toronto Pearson Intl

$1,489Multiple Airlines

1 day ago

Tue, 27 Oct - Tue, 10 Nov

13:40 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 55m2 stops Denver Intl Vancouver Intl

11:20 - 15:23SYD Sydney Kingsford Smith-STL Lambert-St Louis

45h 03m1 stop Toronto Pearson Intl

$1,598Air New Zealand

1 day ago

Wed, 28 Oct - Tue, 10 Nov

13:40 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 55m2 stops Denver Intl Vancouver Intl

11:20 - 16:57SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 37m2 stops Vancouver Intl Denver Intl

$1,600Air New Zealand

1 day ago

Tue, 27 Oct - Mon, 9 Nov

13:40 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 55m2 stops Denver Intl Vancouver Intl

11:20 - 23:59SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 39m2 stops Vancouver Intl Seattle/Tacoma Intl

$1,604Multiple Airlines

1 day ago

Thu, 29 Oct - Tue, 10 Nov

13:40 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 55m2 stops Denver Intl Vancouver Intl

11:20 - 16:57SYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 37m2 stops Vancouver Intl Denver Intl

$1,656Air New Zealand

1 day ago

Wed, 28 Oct - Thu, 12 Nov

13:40 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 55m2 stops Denver Intl Vancouver Intl

11:20 - 23:24SYD Sydney Kingsford Smith-STL Lambert-St Louis

29h 04m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$1,669Air New Zealand

1 day ago

Fri, 30 Oct - Thu, 5 Nov

16:05 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

48h 30m2 stops Toronto Pearson Intl Vancouver Intl

11:20 - 15:26SYD Sydney Kingsford Smith-STL Lambert-St Louis

45h 06m2 stops Vancouver Intl Toronto Pearson Intl

$1,679Air Canada

3+ days ago

Wed, 28 Oct - Tue, 10 Nov

08:50 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 45m2 stops Denver Intl Vancouver Intl

11:20 - 12:10SYD Sydney Kingsford Smith-STL Lambert-St Louis

41h 50m3 stops Vancouver Intl Toronto Pearson Intl Chicago O'Hare Intl

$1,683Air Canada

1 day ago

Wed, 28 Oct - Wed, 11 Nov

13:40 - 08:35STL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 55m2 stops Denver Intl Vancouver Intl

11:20 - 21:40SYD Sydney Kingsford Smith-STL Lambert-St Louis

27h 20m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$1,698Air New Zealand

1 day ago

Booking Insights

Price, demand, and travel trends for St. Louis to Sydney flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Stopovers

What's the cheapest day of the week to fly from St. Louis to Sydney?: Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from St. Louis to Sydney. It’s 11% cheaper than the average day, while Saturday is the most expensive, with prices 17% higher.
What is the cheapest month to fly from St. Louis to Sydney? KAYAK internal proprietary data takes all prices for each month over the last 12 months for return flights from St. Louis to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.: •July is the cheapest month to fly from St. Louis to Sydney at $1,649 return.
•December ($2,543) and October ($2,352) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 54% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Low season	July
High season	December
Cheapest flight	$1,048

Beat the crowds with an average 43% drop in traveller numbers.

The most popular month to fly with an average 58% increase in traveller numbers.

One-way flight from St. Louis to Sydney

When to book flights from St. Louis to Sydney

Are your dates flexible? Find out the best times to travel from St. Louis to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which cabin classes can I book on flights from St. Louis to Sydney?
Only Economy class is available on flights from St. Louis to Sydney.
How long is a flight from St. Louis to Sydney?
A direct flight from St. Louis to Sydney takes 00m, covering 23,449 km.
Do I need a passport to fly from St. Louis to Sydney?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a St. Louis to Sydney flight?
Return flights from St. Louis to Sydney range from $1,847 to $2,387, with an average of $2,037 over the past 12 months. Anything below $1,847 counts as a good deal.
How are flight prices from St. Louis to Sydney looking right now?
One-way fares from St. Louis to Sydney are currently lower than usual. Average one-way flight prices are about $1,254, which is 10% below the typical average for this route.
Which car hire options are available at Sydney Kingsford Smith Airport (SYD)?
Sydney Kingsford Smith Airport (SYD) hosts 5 major car hire companies, with daily rates starting from around $15 for economy cars. Top options include:

• East Coast Car Rentals
• Bargain Car Rentals
• YESDRIVE CAR RENTAL
• No Birds
• EverythingFleet
Which airports can I use when flying from St. Louis to Sydney?
Flights from St. Louis to Sydney usually depart from Lambert-St Louis (STL) and arrive at Sydney Kingsford Smith (SYD).
Which airports do connecting flights from St. Louis to Sydney pass through?
One-stop flights from St. Louis to Sydney most commonly connect through:

• Dallas/Fort Worth (DFW) – 70% of one-stop connections
• San Francisco (SFO) – 25% of one-stop connections
• Houston George Bush Intcntl (IAH) – 4% of one-stop connections
• Los Angeles (LAX) – 1% of one-stop connections
Can I save money by using flexible dates for flights from St. Louis to Sydney?
Yes. Flexible dates can save you up to 25% on flights from St. Louis to Sydney. Tuesday is the cheapest departure day at $1,820 return on average, while Saturday is the most expensive at $2,398, a difference of $578.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.
How much time can I save by choosing a different stopover airport from St. Louis to Sydney?
Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time of 20h 58m, compared to 21h 35m via Houston George Bush Intcntl (IAH) and 22h 12m via San Francisco (SFO).
What is the time difference between St. Louis and Sydney?
Sydney is 16 hours ahead of St. Louis (Eastern Australia Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Sydney?
Some of the most popular sights in Sydney are Sydney Opera House, Star Casino, and Capitol Theatre. These are among the most viewed places in Sydney on KAYAK.

If your dates are flexible, aim for a Tuesday departure and avoid flying on Saturday. On this route, Tuesday flights average $1,820, about $578 less than Saturday fares (24% savings) based on the last 12 months.
If you can choose when to travel, plan your St. Louis to Sydney trip for July. Fares historically average $1,649 return in that month – typically $894 less than the most expensive month, which is December (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Sydney Kingsford Smith Airport.

• ibis budget Sydney Airport
• Rydges Sydney Airport Hotel
• Travelodge Hotel Sydney Airport

More options for your flight from St. Louis to Sydney

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STL - SYD

$997 Find Cheap Flights from St. Louis to Sydney – Compare and Save

Everything you should know

Cheap Flights from St. Louis to Sydney (STL-SYD)

Recent return flight deals from St. Louis to Sydney

Recent one-way flight deals from St. Louis to Sydney

Recent last minute flight deals from St. Louis to Sydney

Price, demand, and travel trends for St. Louis to Sydney flights

What's the cheapest day of the week to fly from St. Louis to Sydney?

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

Which airline is the cheapest to fly from St. Louis to Sydney?

What is the most popular stopover airport when flying from St. Louis to Sydney?

What is the cheapest stopover airport when flying from St. Louis to Sydney?

When flying from St. Louis to Sydney, which airport offers the shortest stopover?

Key details for St. Louis to Sydney flights

Low season

High season

Cheapest flight

When to book flights from St. Louis to Sydney

Your St. Louis to Sydney flight questions, answered

Your guide to booking St. Louis to Sydney flights

More options for your flight from St. Louis to Sydney

Complete your trip to Sydney with a hotel stay or car hire

Information on your arrival and departure airports

Cabin class types available on flights from St. Louis to Sydney

Find direct flights to and from St. Louis and Sydney

Flights from domestic origins to Sydney

Flights to other popular destinations

Find deals for your return flight