Cheap flights from St. Louis to Sydney from $1,707

Return
1 adult
Economy
0 bags
From?
To?
Wed 17/8
Wed 24/8

Flight information for St. Louis to Sydney
(STL to SYD)

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Sydney

Best price found

$1,707

Fastest flight time

30h 38m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from St. Louis in the past 72 hours is $1,707. The best return flight deal from St. Louis to Sydney found on momondo in the last 72 hours is $2,895.
The fastest flight from St. Louis to Sydney takes 30h 38m
There are no direct flights from St. Louis to Sydney. Popular non-direct route for this connection is Lambert-St Louis Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

How to get the cheapest flight ticket from St. Louis to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

August

The cheapest time of year to fly to Sydney from St. Louis is August. The most expensive is January.

What is the cheapest St. Louis to Sydney flight route?

Lambert-St Louis - Sydney Kingsford Smith

Fly from Lambert-St Louis to Sydney Kingsford Smith for the best St. Louis - Sydney flight prices

When travelling from St. Louis to Sydney, the most popular airport to fly into is Sydney Kingsford Smith Airport. The majority of travellers flying into Sydney Kingsford Smith Airport from St. Louis are departing from Lambert-St Louis Airport. The cheapest route from St. Louis to Sydney is STL — SYD with an average price of $1,836 RT during the month of August.

Lambert-St Louis Airport (STL) to Sydney Kingsford Smith Airport (SYD)$1,836
Search Flight Deals

Easily compare return flights from St. Louis to Sydney

Below you can see the best fares for your return flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to Sydney by changing tabs
Multiple Airlines
1 Nov.
STL02:00Lambert-St Louis
35h 50m
2 stops
SYD13:50Sydney Kingsford Smith
13 Nov.
SYD17:10Sydney Kingsford Smith
57h 52m
2 stops
STL03:02Lambert-St Louis
ANA
31 Oct.
STL02:10Lambert-St Louis
35h 45m
2 stops
SYD13:55Sydney Kingsford Smith
7 Nov.
SYD16:35Sydney Kingsford Smith
29h 50m
2 stops
STL22:25Lambert-St Louis
Qantas Airways
2 Nov.
STL15:24Lambert-St Louis
21h 36m
1 stop
SYD13:00Sydney Kingsford Smith
16 Nov.
SYD06:15Sydney Kingsford Smith
29h 38m
1 stop
STL11:53Lambert-St Louis
United Airlines
2 Nov.
STL09:00Lambert-St Louis
26h 00m
1 stop
SYD11:00Sydney Kingsford Smith
16 Nov.
SYD06:30Sydney Kingsford Smith
27h 15m
2 stops
STL09:45Lambert-St Louis
American Airlines
18 Nov.
STL14:29Lambert-St Louis
20h 31m
1 stop
SYD11:00Sydney Kingsford Smith
28 Nov.
SYD06:15Sydney Kingsford Smith
27h 28m
2 stops
STL09:43Lambert-St Louis
Delta
7 Sep.
STL02:20Lambert-St Louis
33h 25m
2 stops
SYD11:45Sydney Kingsford Smith
14 Sep.
SYD07:45Sydney Kingsford Smith
36h 08m
2 stops
STL19:53Lambert-St Louis

Find the cheapest one-way flights from St. Louis to Sydney

If you're looking for one-way flights from St. Louis to Sydney, view some of our deals below provided by ANA, Air New Zealand and American Airlines
ANA
28 Dec.
STL08:27Lambert-St Louis
27h 28m
2 stops
SYD11:55Sydney Kingsford Smith
Air New Zealand
1 Sep.
STL02:20Lambert-St Louis
35h 20m
2 stops
SYD13:40Sydney Kingsford Smith
Qantas Airways
1 Sep.
STL15:27Lambert-St Louis
20h 28m
1 stop
SYD11:55Sydney Kingsford Smith

Search last-minute flights to Sydney from St. Louis

Find and compare return flight prices for your last-minute flight from St. Louis to Sydney
Qantas Airways
17 Aug.
STL15:35Lambert-St Louis
20h 00m
1 stop
SYD11:35Sydney Kingsford Smith
24 Aug.
SYD07:15Sydney Kingsford Smith
51h 27m
3 stops
STL10:42Lambert-St Louis
Air Canada
18 Aug.
STL02:00Lambert-St Louis
33h 50m
2 stops
SYD11:50Sydney Kingsford Smith
25 Aug.
SYD09:40Sydney Kingsford Smith
40h 51m
2 stops
STL02:31Lambert-St Louis
Multiple Airlines
18 Aug.
STL03:00Lambert-St Louis
48h 10m
3 stops
SYD03:10Sydney Kingsford Smith
25 Aug.
SYD09:40Sydney Kingsford Smith
40h 51m
2 stops
STL02:31Lambert-St Louis
Qantas Airways
17 Aug.
STL15:27Lambert-St Louis
20h 28m
1 stop
SYD11:55Sydney Kingsford Smith
24 Aug.
SYD11:40Sydney Kingsford Smith
20h 19m
1 stop
STL07:59Lambert-St Louis
Multiple Airlines
17 Aug.
STL09:35Lambert-St Louis
28h 10m
3 stops
SYD13:45Sydney Kingsford Smith
24 Aug.
SYD06:15Sydney Kingsford Smith
38h 40m
2 stops
STL20:55Lambert-St Louis
Qantas Airways
17 Aug.
STL15:27Lambert-St Louis
20h 28m
1 stop
SYD11:55Sydney Kingsford Smith
24 Aug.
SYD03:05Sydney Kingsford Smith
31h 37m
2 stops
STL10:42Lambert-St Louis

American Airlines flights from St. Louis to Sydney

Our best American Airlines deals on St. Louis to Sydney flight tickets
American Airlines
18 Nov.
STL14:29Lambert-St Louis
20h 31m
1 stop
SYD11:00Sydney Kingsford Smith
28 Nov.
SYD06:15Sydney Kingsford Smith
27h 28m
2 stops
STL09:43Lambert-St Louis
American Airlines
18 Nov.
STL14:29Lambert-St Louis
20h 31m
1 stop
SYD11:00Sydney Kingsford Smith
28 Nov.
SYD06:15Sydney Kingsford Smith
29h 38m
1 stop
STL11:53Lambert-St Louis
American Airlines
19 Nov.
STL09:46Lambert-St Louis
49h 14m
2 stops
SYD11:00Sydney Kingsford Smith
9 Dec.
SYD06:15Sydney Kingsford Smith
29h 26m
1 stop
STL11:41Lambert-St Louis

Qantas Airways flights from St. Louis to Sydney

Our best Qantas Airways deals on St. Louis to Sydney flight tickets
Qantas Airways
2 Nov.
STL15:24Lambert-St Louis
21h 36m
1 stop
SYD13:00Sydney Kingsford Smith
16 Nov.
SYD06:15Sydney Kingsford Smith
29h 38m
1 stop
STL11:53Lambert-St Louis
Qantas Airways
19 Nov.
STL10:01Lambert-St Louis
24h 59m
1 stop
SYD11:00Sydney Kingsford Smith
9 Dec.
SYD06:15Sydney Kingsford Smith
29h 26m
1 stop
STL11:41Lambert-St Louis
Qantas Airways
6 Feb.
STL01:47Lambert-St Louis
33h 13m
1 stop
SYD11:00Sydney Kingsford Smith
20 Feb.
SYD14:15Sydney Kingsford Smith
42h 22m
2 stops
STL08:37Lambert-St Louis

  • How far is Lambert-St Louis to Sydney Kingsford Smith by plane?

    A flight from Lambert-St Louis to Sydney Kingsford Smith will travel around 14576.1 km. In terms of flight time, this usually takes a little over 20h 31m.



Alternative routes for St. Louis to Sydney

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Kansas City to Sydney Flights
Fastest flight time25h 30m
Cheapest price$1,799

Similar St. Louis to Sydney flights

Flexible with your destination? Broaden your search and find flights similar to your St. Louis to Sydney route

Why use momondo?

It is quick and easy to find St. Louis to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

momondo does allow users to show only those flights to Sydney from St. Louis which offer a flexible booking policy as well as other useful filters and features.

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Sydney.

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from St. Louis and alert you when they change.


Here's why travellers choose to use momondo
Flexible Travel
momondo understands the need for flexibility and we have a filter specifically for flights with no change fees.
Expert Insights
Data driven insights designed to help you find a great flight deal. From the cheapest time to depart to how far in advance to book.
Price Alerts
Track the price of your preferred flight route and be notified when it changes.