SYD - STL

$970 Find Cheap Flights from Sydney to St. Louis – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
$1,487
Typical prices: $1,668-$2,256
American Airlines
Fri 16/11Sun 2/12
SYD - STL • 1 stop
Cheapest one-way flight
$970
Typical prices: $967-$1,261
American Airlines
Tue 13/11
SYD - STL • 1 stop
Direct flights
Not available
There are currently no direct flights between Sydney and St. Louis. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
July
Cheapest • 19% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Dallas/Fort Worth (DFW)
Cheapest • Avg $1,867 (return)
San Francisco (SFO)
Shortest trip • 21h 31m (one-way)
Insights
Insights
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We hope you enjoy your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

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

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

Recent return flight deals from Sydney to St. Louis

Mon, 16 Nov - Wed, 2 Dec
American Airlines Logo
14:05 - 18:16SYD  Sydney Kingsford Smith-STL Lambert-St Louis
21h 11m1 stop Dallas/Fort Worth
American Airlines Logo
07:00 - 09:00STL  Lambert-St Louis-SYD Sydney Kingsford Smith
33h 00m1 stop Los Angeles
$1,487American Airlines
2 days ago
Mon, 16 Nov - Wed, 2 Dec
American Airlines Logo
07:20 - 14:04SYD  Sydney Kingsford Smith-STL Lambert-St Louis
23h 44m2 stops Brisbane Dallas/Fort Worth
American Airlines Logo
07:00 - 09:00STL  Lambert-St Louis-SYD Sydney Kingsford Smith
33h 00m1 stop Los Angeles
$1,525American Airlines
2 days ago
Sat, 21 Nov - Sat, 28 Nov
American Airlines Logo
11:10 - 23:58SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 48m1 stop Los Angeles
American Airlines Logo
10:21 - 06:55STL  Lambert-St Louis-SYD Sydney Kingsford Smith
27h 34m1 stop Dallas/Fort Worth
$1,615American Airlines
3+ days ago
Mon, 16 Nov - Wed, 2 Dec
Qantas Airways Logo
11:10 - 20:42SYD  Sydney Kingsford Smith-STL Lambert-St Louis
26h 32m1 stop Los Angeles
Qantas Airways Logo
07:00 - 09:00STL  Lambert-St Louis-SYD Sydney Kingsford Smith
33h 00m1 stop Los Angeles
$1,720Qantas Airways
1 day ago
Sat, 21 Nov - Sat, 28 Nov
Qantas Airways Logo
11:15 - 23:58SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 43m1 stop Los Angeles
Qantas Airways Logo
07:41 - 06:55STL  Lambert-St Louis-SYD Sydney Kingsford Smith
30h 14m1 stop Dallas/Fort Worth
$1,730Qantas Airways
3+ days ago
Mon, 16 Nov - Wed, 2 Dec
United Airlines Logo
11:20 - 16:57SYD  Sydney Kingsford Smith-STL Lambert-St Louis
22h 37m2 stops Los Angeles Denver Intl
United Airlines Logo
13:18 - 09:05STL  Lambert-St Louis-SYD Sydney Kingsford Smith
26h 47m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Los Angeles
$1,733United Airlines
2 days ago
Mon, 16 Nov - Wed, 2 Dec
Qantas Airways Logo
14:05 - 18:16SYD  Sydney Kingsford Smith-STL Lambert-St Louis
21h 11m1 stop Dallas/Fort Worth
Qantas Airways Logo
07:00 - 06:25STL  Lambert-St Louis-SYD Sydney Kingsford Smith
30h 25m1 stop Los Angeles
$1,743Qantas Airways
2 days ago
Sat, 21 Nov - Sat, 28 Nov
United Airlines Logo
11:20 - 23:24SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 04m2 stops Los Angeles Chicago O'Hare Intl
United Airlines Logo
13:08 - 09:05STL  Lambert-St Louis-SYD Sydney Kingsford Smith
26h 57m2 stops Chicago O'Hare Intl Los Angeles
$1,870United Airlines
3+ days ago
Thu, 4 Mar - Sun, 28 Mar
Air New Zealand Logo
09:55 - 22:12SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 17m2 stops Auckland Intl Houston George Bush Intcntl
Air New Zealand Logo
06:15 - 08:45STL  Lambert-St Louis-SYD Sydney Kingsford Smith
34h 30m2 stops Houston George Bush Intcntl Auckland Intl
$1,880Air New Zealand
2 days ago
Thu, 4 Mar - Sun, 28 Mar
Multiple Airlines Logo
11:50 - 22:12SYD  Sydney Kingsford Smith-STL Lambert-St Louis
27h 22m2 stops Auckland Intl Houston George Bush Intcntl
Multiple Airlines Logo
08:00 - 08:45STL  Lambert-St Louis-SYD Sydney Kingsford Smith
32h 45m3 stops Chicago O'Hare Intl San Francisco Auckland Intl
$1,971Multiple Airlines
2 days ago
Booking Insights

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

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

How much is a return flight from Sydney to St. Louis?

Return flights from Sydney to St. Louis typically range from $1,668 to $2,256. The lowest price found in the past 5 days was $1,487 on American Airlines.

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

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from Sydney to St. Louis. It's 16% cheaper than the average day, while Sunday is the most expensive, with prices 24% higher.

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

•July is the cheapest month to fly from Sydney to St. Louis at $1,508 return.
•January ($3,132) and April ($2,315) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 107% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Sydney to St. Louis flights

Low season

February

Cheapest flight

$970
Beat the crowds with an average 60% drop in travellers.
The most popular month to fly with an average 115% increase in travellers.
One-way flight from Sydney to St. Louis

When to book flights from Sydney to St. Louis

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

Your Sydney to St. Louis flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

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

    Two cabin classes are available on flights from Sydney to St. Louis:

    • Economy class
    • Premium Economy Class

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

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

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

    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 Sydney to St. Louis flight?

    Return flights from Sydney to St. Louis range from $1,668 to $2,256, with an average of $1,858 over the past 12 months. Anything below $1,668 counts as a good deal.

  • Have flight prices from Sydney to St. Louis changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about $1,487 to $13,003. That means the highest observed fare was about 9x higher than the lowest one.

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

    One-way fares from Sydney to St. Louis are currently in line with typical prices for this route. Average one-way fares are about $1,090.

  • Which car hire options are available at Lambert-St Louis Airport (STL)?

    Lambert-St Louis Airport (STL) hosts 5 major car hire companies, with daily rates starting from around $44 for economy cars. Top options include:

    • Hertz
    • Budget
    • Alamo
    • Enterprise Rent-A-Car
    • Payless

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

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

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

    One-stop flights from Sydney to St. Louis most commonly connect through:

    • Dallas/Fort Worth (DFW) – 60% of one-stop connections
    • San Francisco (SFO) – 36% of one-stop connections
    • Los Angeles (LAX) – 4% of one-stop connections

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

    Yes. Flexible dates can save you up to 32% on flights from Sydney to St. Louis. Saturday is the cheapest departure day at $1,575 return on average, while Sunday is the most expensive at $2,312, a difference of $737.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time of 20h 47m, compared to 21h 31m via San Francisco (SFO) and 29h 05m via Los Angeles (LAX).

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

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

  • What popular places can I visit in St. Louis?

    America's Center Convention Complex is one of the most viewed places in St. Louis on KAYAK.

Your guide to booking Sydney to St. Louis flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Saturday departure and avoid flying on Sunday. On this route, Saturday flights average $1,575, about $737 less than Sunday fares (32% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Sydney to St. Louis trip for July. Fares historically average $1,508 return in that month – typically $1,624 less than the most expensive month, which is January (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.

    • Renaissance St. Louis Airport Hotel
    • Drury Inn & Suites St. Louis Airport
    • DoubleTree by Hilton St. Louis Airport

More options for your flight from Sydney to St. Louis

Complete your trip to St. Louis with a hotel stay or car hire

Car hire in St. Louis
Hotels in St. Louis