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

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The best prices from St Louis to Sydney are usually found in September or June, booked 60 days in advance, depart on a Monday or Tuesday and return on a Monday

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

STL - SYD
Price
$1,126 - $1,810
SYD
Temperature
32 - 75.2 °F
SYD
Rainfall
3.3 - 6.3 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

$1,310

Average for round-trip flights in March 2021

Round-trip from

$1,126

From St Louis to Sydney

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

Sunday is generally a great day to depart. Flying on this day could help you save up to 25%.

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

To save on the cost of your flight from St Louis to Sydney, book at least 61 days before your planned departure. Booking around this time can save you about 14% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $1,179 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,248.

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 July, with the cheapest ticket starting at $635.

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

When flying from St Louis to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 12% versus a flight in the evening.

Cheap flights from St Louis to Sydney in March, April 2021

30 Apr - 19 May
$2,411pp
STL
Lambert-St Louis
Multiple Airlines
     
3 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
30 Apr - 13 May
$2,425pp
STL
Lambert-St Louis
Multiple Airlines
     
3 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
30 Apr - 15 May
$2,469pp
STL
Lambert-St Louis
Multiple Airlines
     
3 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis

St Louis to Sydney 2021 flight deals

4 Oct - 3 Nov
$1,454pp
STL
Lambert-St Louis
Qatar Airways
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Qatar Airways
   
2 STOPS
STL
Lambert-St Louis
16 Nov - 23 Nov
$1,462pp
STL
Lambert-St Louis
Qatar Airways
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Qatar Airways
   
2 STOPS
STL
Lambert-St Louis
4 Oct - 3 Nov
$1,480pp
STL
Lambert-St Louis
Qatar Airways
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Qatar Airways
   
2 STOPS
STL
Lambert-St Louis

One-way flights to Sydney from St Louis

3:05 am - 4:05 am
American Airlines
2 Stops
33h 00m
STL - SYD
American Airlines
10:40 am - 4:05 am
Multiple Airlines
2 Stops
49h 25m
STL - SYD
Multiple Airlines
$8,841
Ovago
2:20 am - 4:05 am
American Airlines
3 Stops
33h 45m
STL - SYD
American Airlines

Related info for your journey

Flight FAQs

From St Louis to Sydney

Are flight prices decreasing from St Louis to Sydney due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St Louis and Sydney for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Lambert-St Louis to Sydney Kingsford Smith to control the spread of COVID-19?

New policies can now be found on Delta to help keep travelers safe while flying. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially distanced seating (for a limited time) will work towards keeping travelers safer while flying from Lambert-St Louis to Sydney Kingsford Smith. Policies will vary by airline.

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 United Airlines, Qantas Airways, and American Airlines. 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 $1,900 on Cheapflights?

Yes, there are multiple flights from St Louis to Sydney for under $1,900. The cheapest flight booked recently is on Multiple Airlines for just $1,898, but on average you can expect to pay $2,512.

Are there nonstop flights from St Louis to Sydney for under $1,900 on Cheapflights?

There are no nonstop flights from St Louis to Sydney, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Does it rain more in St Louis or Sydney?

The rainfall in St Louis is generally same as the rainfall in Sydney. This will continue over the next 15 days.

Is St Louis weather warmer or cooler than Sydney?

Expect the weather to be around 90 °F on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Sydney is generally colder than in St Louis.

How long is the flight from St Louis to Sydney?

Departing from St Louis to Sydney will take you 36h 20m.

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

Flying on Qatar Airways is currently your cheapest option to Sydney, with prices starting at $3,045.

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

To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $2,162.

Related searches

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Destination information for Sydney

Today's exchange rate
$1 = $1.30
Average temperature for March in Sydney
37.4 °F
Avg rainfall for March in Sydney
5.4 ″

Airports servicing St. Louis

Airports servicing Sydney

Top 6 airlines flying from St Louis to Sydney

Airline Cheapest Average Flexibility On-time COVID-19 safety
Qantas Airways
$713 $1,178 No cancel fee 74%
Air New Zealand
$966 $1,220 No cancel fee 78%
Delta
$738 $1,380 No cancel fee N/A
United Airlines
$686 $1,431 No cancel fee 69%
American Airlines
$801 $1,506 No cancel fee 71%
Air Canada
$1,138 $1,554 No cancel fee 67%
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