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).

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

Four cabin classes are available on flights from St. Louis to Sydney: • Economy Class • Premium Economy Class • Business Class • First Class Prices vary by airline.

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 29% on flights from St. Louis to Sydney. Tuesday is the cheapest departure day at $1,202 round-trip on average, while Saturday is the most expensive at $1,688, a difference of $486. KAYAK's flexible dates feature shows options up to 3 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, Chinatown Night Market and The Rocks Markets. These are among the most viewed places in Sydney on KAYAK.

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

A nonstop flight from St. Louis to Sydney takes 00m, covering 9,054 miles.

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 higher than usual. Average one-way flight prices are about $3,413, which is 250% above the typical average for this route.

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

Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 20h 58m, compared with 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 17 hours ahead of St. Louis (Eastern Australia Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Sydney Kingsford Smith Airport (SYD)?

Sydney Kingsford Smith Airport (SYD) hosts 5 major car rental companies, with daily rates averaging $40 for economy cars. Top options include: • East Coast Car Rentals • YESDRIVE CAR RENTAL • Bargain Car Rentals • No Birds • EverythingFleet

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

Round-trip flights from St. Louis to Sydney range from $1,278 to $1,680, with an average of $1,397 over the past 12 months. Anything below $1,278 counts as a good deal.

How much is a round-trip flight from St. Louis to Sydney?

Round-trip flights from St. Louis to Sydney typically range from $1,278 to $1,680. The lowest price found in the past 5 days was $1,072, on Qantas Airways.

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 14% cheaper than the average day, while Saturday is the most expensive, with prices 20% higher.

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

•March is the cheapest month to fly from St. Louis to Sydney at $1,219 round-trip. •December ($1,790) and October ($1,656) are the most expensive months. •The price difference between flying in the cheapest and most expensive months is 46% 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?

Qantas Airways ($1,072) and United Airlines ($1,498) are the cheapest airlines to fly round-trip from St. Louis to Sydney according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from St. Louis to Sydney?

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

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

Flights via Los Angeles (LAX) offer the most affordable fares, with an average round-trip price of $1,253. Based on KAYAK data over the past 3 months.

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

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

$720 CHEAP FLIGHTS from St. Louis to Sydney (STL - SYD)

Save 25% 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 round-trip

$1,072

Typical prices: $1,278-$1,680

Qantas Airways

Thu 3/8Tue 3/20

STL - SYD • 2 stops

Cheapest one-way

$720

Typical prices: $844-$1,082

Qantas Airways

Thu 3/8

STL - SYD • 1 stop

Nonstop 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

March

Cheapest • 13% price drop

December

Most popular

Good to know

Top layover airports

Los Angeles (LAX)

Cheapest • Avg $1,253 (round-trip)

Dallas/Fort Worth (DFW)

Shortest trip • 20h 58m (one-way)

Insights

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We hope you love 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.

Round-trip

One-way

Last minute

Recent round-trip flight deals from St. Louis to Sydney

Mon, Mar 8 - Sat, Mar 20

2:23 pm - 2:50 pmSTL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 27m2 stops Dallas/Fort Worth Auckland Intl

11:20 am - 11:59 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

28h 39m1 stop Los Angeles

$1,072Qantas Airways

Mon, Mar 8 - Sat, Mar 20

2:23 pm - 2:50 pmSTL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 27m2 stops Dallas/Fort Worth Auckland Intl

11:20 am - 11:59 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

28h 39m1 stop Los Angeles

$1,209Qantas Airways

Wed, Feb 3 - Fri, Feb 26

5:00 pm - 6:55 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

20h 55m1 stop Dallas/Fort Worth

6:55 am - 1:41 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 46m2 stops Brisbane Dallas/Fort Worth

$1,238Multiple Airlines

Wed, Feb 3 - Fri, Feb 26

5:00 pm - 6:55 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

20h 55m1 stop Dallas/Fort Worth

11:05 am - 7:32 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

25h 27m3 stops Brisbane Los Angeles Chicago O'Hare Intl

$1,239Multiple Airlines

Wed, Feb 3 - Fri, Feb 26

11:53 am - 6:25 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

25h 32m2 stops Chicago O'Hare Intl Los Angeles

11:05 am - 7:32 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

25h 27m3 stops Brisbane Los Angeles Chicago O'Hare Intl

$1,239Multiple Airlines

Fri, Jan 29 - Sat, May 15

3:45 pm - 11:05 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

26h 20m2 stops Dallas/Fort Worth Brisbane

12:00 pm - 5:21 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

20h 21m1 stop Dallas/Fort Worth

$1,254Qantas Airways

Mon, Jan 18 - Tue, Feb 2

8:30 am - 6:20 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

28h 50m1 stop San Francisco

11:50 am - 6:17 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 27m1 stop San Francisco

$1,498United Airlines

Sat, Nov 28 - Sat, Dec 5

6:15 am - 7:00 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 45m1 stop Houston George Bush Intcntl

9:10 am - 6:41 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

26h 31m1 stop Houston George Bush Intcntl

$1,598United Airlines

Sat, Jan 16 - Sat, Jan 23

3:05 pm - 9:00 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 55m2 stops Dallas/Fort Worth Los Angeles

6:05 am - 2:15 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

25h 10m2 stops Brisbane Dallas/Fort Worth

$1,724American Airlines

Sat, Jan 16 - Sat, Jan 23

3:05 pm - 9:00 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 55m2 stops Dallas/Fort Worth Los Angeles

2:05 pm - 4:25 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

19h 20m1 stop Dallas/Fort Worth

$1,799American Airlines

Recent last minute flight deals from St. Louis to Sydney

Tue, Nov 10 - Mon, Nov 16

8:10 am - 6:25 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

29h 15m1 stop Los Angeles

9:50 pm - 8:42 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

39h 52m2 stops Brisbane Los Angeles

$1,293Qantas Airways

Tue, Nov 10 - Mon, Nov 16

6:00 am - 1:00 pmSTL Lambert-St Louis-SYD Sydney Kingsford Smith

38h 00m2 stops Chicago O'Hare Intl Hong Kong Intl

8:45 am - 9:59 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

30h 14m2 stops Hong Kong Intl Dallas/Fort Worth

$1,523Multiple Airlines

Tue, Nov 10 - Mon, Nov 16

2:54 pm - 6:55 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

23h 01m1 stop Dallas/Fort Worth

2:05 pm - 6:16 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

21h 11m1 stop Dallas/Fort Worth

$1,772Qantas Airways

Mon, Nov 9 - Thu, Nov 12

8:10 am - 9:00 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 50m1 stop Los Angeles

2:05 pm - 6:16 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

21h 11m1 stop Dallas/Fort Worth

$1,875Qantas Airways

Tue, Nov 10 - Mon, Nov 16

10:21 am - 6:25 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

27h 04m3 stops Dallas/Fort Worth Phoenix Sky Harbor Intl Los Angeles

7:20 am - 12:28 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

22h 08m2 stops Brisbane Dallas/Fort Worth

$1,941Multiple Airlines

Mon, Nov 9 - Thu, Nov 12

8:10 am - 9:00 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

31h 50m1 stop Los Angeles

11:05 am - 8:42 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

26h 37m2 stops Brisbane Los Angeles

$1,979Qantas Airways

Mon, Nov 9 - Thu, Nov 12

7:30 am - 7:25 pmSTL Lambert-St Louis-SYD Sydney Kingsford Smith

66h 55m3 stops Chicago O'Hare Intl Istanbul Singapore Changi

9:35 pm - 9:40 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

65h 05m3 stops Singapore Changi Istanbul Chicago O'Hare Intl

$2,015Turkish Airlines

Mon, Nov 9 - Thu, Nov 12

11:00 am - 7:00 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

27h 00m1 stop Houston George Bush Intcntl

11:20 am - 6:05 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 45m2 stops Los Angeles San Francisco

$2,399United Airlines

Mon, Nov 9 - Thu, Nov 12

11:00 am - 7:00 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

27h 00m1 stop Houston George Bush Intcntl

11:50 am - 6:05 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 15m1 stop San Francisco

$2,399United Airlines

Mon, Nov 9 - Thu, Nov 12

3:15 pm - 9:05 amSTL Lambert-St Louis-SYD Sydney Kingsford Smith

24h 50m2 stops Chicago O'Hare Intl Los Angeles

11:20 am - 6:05 pmSYD Sydney Kingsford Smith-STL Lambert-St Louis

23h 45m2 stops Los Angeles San Francisco

$2,404United Airlines

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

Layovers

How much is a round-trip flight from St. Louis to Sydney? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Sydney departing in march.
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 14% cheaper than the average day, while Saturday is the most expensive, with prices 20% higher.
What’s 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 round-trip 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.: •March is the cheapest month to fly from St. Louis to Sydney at $1,219 round-trip.
•December ($1,790) and October ($1,656) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 46% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Low season	June
High season	December
Cheapest flight	$720

Beat the crowds with an average 33% drop in travelers.

The most popular month to fly with an average 49% increase in travelers.

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 round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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.

What cabin classes can I book on flights from St. Louis to Sydney?
Four cabin classes are available on flights from St. Louis to Sydney:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.
How long is a flight from St. Louis to Sydney?
A nonstop flight from St. Louis to Sydney takes 00m, covering 9,054 miles.
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?
Round-trip flights from St. Louis to Sydney range from $1,278 to $1,680, with an average of $1,397 over the past 12 months. Anything below $1,278 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 higher than usual. Average one-way flight prices are about $3,413, which is 250% above the typical average for this route.
What car rental options are available at Sydney Kingsford Smith Airport (SYD)?
Sydney Kingsford Smith Airport (SYD) hosts 5 major car rental companies, with daily rates averaging $40 for economy cars. Top options include:

• East Coast Car Rentals
• YESDRIVE CAR RENTAL
• Bargain Car Rentals
• 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 29% on flights from St. Louis to Sydney. Tuesday is the cheapest departure day at $1,202 round-trip on average, while Saturday is the most expensive at $1,688, a difference of $486.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How much time can I save by choosing a different layover airport from St. Louis to Sydney?
Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 20h 58m, compared with 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 17 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, Chinatown Night Market and The Rocks Markets. 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 $1,202, about $486 less than Saturday fares (29% savings) based on the last 12 months.
If you can choose when to travel, plan your St. Louis to Sydney trip for March. Fares historically average $1,219 round-trip in that month - typically $571 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
• Travelodge Hotel Sydney Airport
• Rydges Sydney Airport Hotel

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STL - SYD

$720 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 round-trip 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

How much is a round-trip flight from St. Louis to Sydney?

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

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

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

What’s the most popular layover airport when flying from St. Louis to Sydney?

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

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

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 rental

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