SYD - STL

$1,101 Find Cheap Flights from Sydney to St. Louis – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 17% 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.

Everything you should know

Cheapest return flight
$1,426
Typical prices: $1,569-$2,073
Air Canada
Fri 12/10Mon 5/11
SYD - STL • 2 stops
Cheapest one-way flight
$1,101
Typical prices: $865-$1,187
American Airlines
Wed 17/10
SYD - STL • 2 stops
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
September
Cheapest • 17% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Dallas/Fort Worth (DFW)
Cheapest • Avg $1,762 (return)
Houston George Bush Intcntl (IAH)
Shortest trip • 21h 11m (one-way)
Insights
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 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, 12 Oct - Thu, 5 Nov
Air Canada Logo
10:20 - 20:20SYD  Sydney Kingsford Smith-STL Lambert-St Louis
26h 00m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
13:40 - 09:35STL  Lambert-St Louis-SYD Sydney Kingsford Smith
26h 55m2 stops Denver Intl Vancouver Intl
$1,426Air Canada
Mon, 12 Oct - Thu, 5 Nov
Multiple Airlines Logo
10:20 - 18:41SYD  Sydney Kingsford Smith-STL Lambert-St Louis
48h 21m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
13:40 - 09:35STL  Lambert-St Louis-SYD Sydney Kingsford Smith
26h 55m2 stops Denver Intl Vancouver Intl
$1,490Multiple Airlines
Wed, 20 Jan - Sat, 13 Feb
Air Canada Logo
11:20 - 15:26SYD  Sydney Kingsford Smith-STL Lambert-St Louis
45h 06m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
16:05 - 09:35STL  Lambert-St Louis-SYD Sydney Kingsford Smith
48h 30m2 stops Toronto Pearson Intl Vancouver Intl
$1,501Air Canada
Wed, 20 Jan - Sat, 13 Feb
United Airlines Logo
11:20 - 18:08SYD  Sydney Kingsford Smith-STL Lambert-St Louis
23h 48m2 stops Los Angeles Chicago O'Hare Intl
United Airlines Logo
19:06 - 06:20STL  Lambert-St Louis-SYD Sydney Kingsford Smith
42h 14m1 stop San Francisco
$1,562United Airlines
Wed, 20 Jan - Sat, 13 Feb
United Airlines Logo
13:20 - 17:54SYD  Sydney Kingsford Smith-STL Lambert-St Louis
21h 34m1 stop San Francisco
United Airlines Logo
19:06 - 06:20STL  Lambert-St Louis-SYD Sydney Kingsford Smith
42h 14m1 stop San Francisco
$1,562United Airlines
Wed, 21 Oct - Sat, 24 Oct
American Airlines Logo
10:10 - 23:46SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 36m1 stop Los Angeles
American Airlines Logo
19:10 - 11:45STL  Lambert-St Louis-SYD Sydney Kingsford Smith
24h 35m2 stops Dallas/Fort Worth Brisbane
$1,578American Airlines
Tue, 20 Oct - Tue, 27 Oct
Qantas Airways Logo
10:10 - 23:46SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 36m1 stop Los Angeles
Qantas Airways Logo
12:47 - 11:45STL  Lambert-St Louis-SYD Sydney Kingsford Smith
30h 58m2 stops Dallas/Fort Worth Brisbane
$1,598Qantas Airways
Tue, 20 Oct - Tue, 27 Oct
Qantas Airways Logo
13:00 - 19:48SYD  Sydney Kingsford Smith-STL Lambert-St Louis
22h 48m1 stop Dallas/Fort Worth
Qantas Airways Logo
06:04 - 09:00STL  Lambert-St Louis-SYD Sydney Kingsford Smith
34h 56m1 stop Los Angeles
$1,602Qantas Airways
Mon, 12 Oct - Thu, 5 Nov
American Airlines Logo
10:10 - 23:46SYD  Sydney Kingsford Smith-STL Lambert-St Louis
29h 36m1 stop Los Angeles
American Airlines Logo
12:58 - 06:55STL  Lambert-St Louis-SYD Sydney Kingsford Smith
24h 57m1 stop Dallas/Fort Worth
$1,614American Airlines
Tue, 20 Oct - Tue, 27 Oct
United Airlines Logo
10:30 - 17:01SYD  Sydney Kingsford Smith-STL Lambert-St Louis
22h 31m2 stops Los Angeles Chicago O'Hare Intl
United Airlines Logo
13:08 - 08:05STL  Lambert-St Louis-SYD Sydney Kingsford Smith
26h 57m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Los Angeles
$1,739United Airlines
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 from Sydney to St. Louis with more confidence.

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

Return flights from Sydney to St. Louis start at $1,426. Prices are below average for this route right now, with typical return fares ranging from $1,569 to $2,073. The lowest price found in the past 5 days was $1,426 on Air Canada.

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

Saturday is the cheapest day of the week to fly from Sydney to St. Louis and is 15% cheaper than the average day. Sunday is the most expensive day with flight prices 6% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • September is the cheapest month to fly from Sydney to St. Louis at $1,438 return.
  • April ($2,252) and December ($1,992) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 56% 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

June

Cheapest flight

$1,101
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (15% more expensive on average)
Flights 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 route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • 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 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

  • 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) – 63% of one-stop connections
    • San Francisco (SFO) – 27% of one-stop connections
    • Houston George Bush Intcntl (IAH) – 5% of one-stop connections
    • Los Angeles (LAX) – 5% of one-stop connections

    Dallas/Fort Worth (DFW) handles the largest share of one-stop connections on this route.

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

    On the Sydney to St. Louis route, being flexible with your departure day can save you up to 21%. Saturday is the cheapest day at $1,473 return on average, while Sunday is the most expensive at $1,850 – a $377 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • 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.

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

    A direct flight from Sydney to St. Louis takes 0h 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 are flight prices from Sydney to St. Louis looking right now?

    One-way fares from Sydney to St. Louis are currently higher than usual. Average one-way flight prices are about $1,208, which is 19% above the typical average for this route.

  • 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 49m, compared to 21h 11m via Houston George Bush Intcntl (IAH) and 21h 30m via San Francisco (SFO).

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

    St. Louis is 15 hours behind Sydney (Central Time vs Eastern Australia Time). Plan for the time shift when scheduling connections or first-day activities.

  • 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 $42 for economy cars. Top options include:
    · Hertz
    · Budget
    · Alamo
    · Enterprise Rent-A-Car
    · Payless

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

    Return flights from Sydney to St. Louis range from $1,569 to $2,073, with an average of $1,729 over the past 12 months. Anything below $1,569 counts as a good deal.

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 instead of Sunday. On this route, Saturday flights average $1,473 – about $377 less than Sunday (20% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Sydney to St. Louis trip for September. Fares historically average $1,438 return in that month – typically $814 less than the most expensive month, which is April (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.
    - Drury Inn & Suites St. Louis Airport
    - Renaissance St. Louis Airport Hotel
    - 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