Cheap flights from St. Louis (STL) to Sydney (SYD)

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How to find the cheapest flight from
St. Louis (STL) to Sydney (SYD)

All the information you need to plan the best STL to SYD flight in 2022: compare St. Louis to Sydney flight prices with the expected peak season, weather and rainfall in Sydney.
STL - SYD
Price
$1,126 - $1,810
SYD
Temperature
51.8 - 71.6 °F
SYD
Rainfall
2 - 5.1 inches

Popular in

December

High demand for flights, 23% potential price rise

Cheapest in

September

Best time to find cheap flights, 19% potential price drop

Average price

$1,264

Average for round-trip flights in May 2022

Round-trip from

$1,126

From Lambert-St Louis to Sydney Kingsford Smith

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from St. Louis to Sydney?

Flights from St. Louis to Sydney lean towards being more expensive in December. Prices are generally better when you fly from St. Louis to Sydney in September, with the cheapest ticket starting at $713.

How far in advance should I book a flight from St. Louis to Sydney?

Find a great deal and save up to 17% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Sydney within the next two weeks, with the cheapest ticket starting at $1,446.

When is the cheapest time to fly from St. Louis to Sydney (STL - SYD)?

It’s optimal to fly from St. Louis to Sydney at noon. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly round-trip from St. Louis to Sydney?

It’s generally more expensive to depart on a Thursday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

Cheap flights from St. Louis to Sydney in May, June 2022

The best prices found for STL to SYD flights for May, June
28 Jun - 12 Jul
$1,838pp
STL
Lambert-St Louis
United Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
United Airlines
   
2 STOPS
STL
Lambert-St Louis
27 May - 15 Oct
$2,090pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Japan Airlines
   
2 STOPS
STL
Lambert-St Louis
1 Jun - 20 Jul
$2,217pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to Sydney 2022 flight deals

Cheap flights to Sydney from St. Louis found for this year
6 Nov - 15 Nov
$1,149pp
STL
Lambert-St Louis
Air Canada
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Air Canada
   
2 STOPS
STL
Lambert-St Louis
24 Oct - 7 Nov
$1,291pp
STL
Lambert-St Louis
Air New Zealand
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Air New Zealand
   
2 STOPS
STL
Lambert-St Louis
2 Nov - 12 Nov
$1,293pp
STL
Lambert-St Louis
Air Canada
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Air Canada
   
2 STOPS
STL
Lambert-St Louis

Last minute flights from St. Louis to Sydney

Late deals on round-trip flights to Sydney from St. Louis, departing today and this week
1 Jun - 20 Jul
$2,217pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
1 Jun - 20 Jul
$2,300pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Air Canada
   
2 STOPS
STL
Lambert-St Louis
1 Jun - 20 Jul
$2,471pp
STL
Lambert-St Louis
United Airlines
     
3 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
United Airlines
   
2 STOPS
STL
Lambert-St Louis

One-way flights to Kingsford Smith from St. Louis

The cheapest one-way flights from St. Louis to Sydney
1:45 am - 2:45 am
Delta
2 Stops
34h 00m
STL - SYD
Delta
$1,529
Delta
3:21 pm - 2:35 am
Qantas Airways
1 Stop
20h 14m
STL - SYD
Qantas Airways
2:00 am - 5:05 am
Multiple Airlines
2 Stops
34h 05m
STL - SYD
Multiple Airlines
$3,918
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Sydney</span> flights.

Flight FAQs

From St. Louis to Sydney

Which airlines flying from Lambert-St Louis to Sydney Kingsford Smith have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Lambert-St Louis to Sydney Kingsford Smith that may be offering flexible cancellation policies are Qantas Airways, United Airlines, and Delta. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from St. Louis to Sydney for under $1,200 on Cheapflights?

Yes, there are multiple flights from St. Louis to Sydney for under $1,200. The cheapest flight booked recently is on Air Canada for just $1,149, but on average you can expect to pay $1,344.

Are there last-minute flights available from St. Louis to Sydney for under $2,300?

There are currently 5+ open flights from St. Louis to Sydney within the next 7 days for less than $2,300.

What are the cheapest airlines flying from St. Louis to Sydney round-trip?

According to our current data, Air Canada ($1,149), Air New Zealand ($1,291), and United Airlines ($1,299) offers the cheapest pricing from St. Louis to Sydney. Air Canada is priced at 17% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from St. Louis to Sydney one-way?

To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $1,529. Qantas Airways flights start at $1,996 while deals on Japan Airlines start at $3,772 one-way.

What are the cheapest flights from St. Louis to Sydney?

On average you can expect to pay $3,786 for a flight from St. Louis to Sydney. The cheapest flight overall is $587 while the most popular route, (Lambert-St Louis - Sydney Kingsford Smith) is currently priced at $1,291.

What are the most popular airlines that fly from St. Louis to Sydney?

Consider American Airlines, Air Canada or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to Sydney.

COVID Restrictions

View COVID Travel Restrictions for Sydney, Australia

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

Information is based on travel restrictions from Lambert-St Louis to Sydney Kingsford Smith

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Sydney Kingsford Smith.

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Sydney Kingsford Smith.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Sydney Kingsford Smith.

Documents
Travel Authorization Form - Travelers who are not in an exempt category may request an individual exemption to Australia's travel restrictions using this form.

Digital Passenger Declaration - You can start a DPD seven days before your flight to Australia, but you can only submit a DPD within 72 hours before your departure.


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

Returning to Lambert-St Louis from Sydney Kingsford Smith

COVID-19 testing requirements
Visitors from Sydney Kingsford Smith must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Sydney Kingsford Smith are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Sydney, Australia

Destination information for Sydney

Things to know before you go - useful duration and weather info for your trip from St. Louis to Sydney.
Today's exchange rate
$1 = $1.42
Average temperature for May in Sydney
57.2 °F
Avg rainfall for May in Sydney
4.1 ″

Airports servicing St. Louis

Airports servicing Sydney

Top 5 airlines flying from Lambert-St Louis to Sydney Kingsford Smith

The chart below displays the airlines Cheapflights users traveling from St. Louis to Sydney choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Delta
$268 $1,821 No cancel fee N/A
United Airlines
$1,253 $1,914 No cancel fee 69%
Fiji Airways
$1,510 $1,596 No cancel fee 74%
Qantas Airways
$1,597 $2,168 No cancel fee 74%
American Airlines
$1,615 $2,360 No cancel fee 71%