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Cheap flights from St. Louis to Sydney from $669

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Sydney departing on 16/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap return flights

Qantas Airways Logo
16:07 - 10:55STL-SYD
25h 48m2 stops
Qantas Airways Logo
14:20 - 16:07SYD-STL
18h 47m1 stop
$1,536Qantas Airways
Find Deal
Fri, 28 Nov - Sun, 14 Dec
Qantas Airways Logo
16:07 - 10:55STL-SYD
25h 48m2 stops
Qantas Airways Logo
14:20 - 18:15SYD-STL
20h 55m1 stop
$1,565Qantas Airways
Find Deal
Fri, 28 Nov - Sun, 14 Dec
Qantas Airways Logo
16:07 - 06:55STL-SYD
21h 48m1 stop
Qantas Airways Logo
06:00 - 14:01SYD-STL
25h 01m2 stops
$1,642Qantas Airways
Find Deal
Sat, 15 Nov - Sat, 22 Nov
Air Canada Logo
13:30 - 07:20STL-SYD
26h 50m2 stops
Air Canada Logo
09:20 - 19:57SYD-STL
25h 37m2 stops
$1,727Air Canada
Find Deal
Sun, 14 Sep - Thu, 25 Sep
Air Canada Logo
13:30 - 07:20STL-SYD
26h 50m2 stops
Air Canada Logo
09:20 - 19:57SYD-STL
49h 37m3 stops
$1,736Air Canada
Find Deal
Sun, 14 Sep - Thu, 25 Sep
 Logo
13:30 - 07:20STL-SYD
50h 50m2 stops
 Logo
09:20 - 16:32SYD-STL
22h 12m2 stops
$1,743
Find Deal
Sun, 14 Sep - Sat, 27 Sep
Air New Zealand Logo
16:32 - 08:45STL-SYD
25h 13m2 stops
Air New Zealand Logo
11:50 - 22:08SYD-STL
25h 18m2 stops
$1,744Air New Zealand
Find Deal
Thu, 21 Aug - Thu, 4 Sep
 Logo
13:30 - 07:20STL-SYD
50h 50m3 stops
 Logo
09:20 - 16:32SYD-STL
22h 12m2 stops
$1,752
Find Deal
Sun, 14 Sep - Sat, 27 Sep
American Airlines Logo
13:53 - 07:05STL-SYD
26h 12m2 stops
American Airlines Logo
09:10 - 18:00SYD-STL
23h 50m2 stops
$1,778American Airlines
Find Deal
Sun, 14 Sep - Sat, 27 Sep
American Airlines Logo
19:42 - 06:55STL-SYD
20h 13m1 stop
American Airlines Logo
09:10 - 18:00SYD-STL
23h 50m2 stops
$1,779American Airlines
Find Deal
Sun, 14 Sep - Sat, 27 Sep

Qantas Airways flights from St. Louis to Sydney

Our best Qantas Airways deals on St. Louis to Sydney flight tickets
Qantas Airways
28 Nov
STL16:07Lambert-St Louis
25h 48m
2 stops
SYD10:55Sydney Kingsford Smith
14 Dec
SYD14:20Sydney Kingsford Smith
18h 47m
1 stop
STL16:07Lambert-St Louis
Qantas Airways
28 Nov
STL16:07Lambert-St Louis
25h 48m
2 stops
SYD10:55Sydney Kingsford Smith
14 Dec
SYD14:20Sydney Kingsford Smith
20h 55m
1 stop
STL18:15Lambert-St Louis
Qantas Airways
15 Nov
STL16:07Lambert-St Louis
21h 48m
1 stop
SYD06:55Sydney Kingsford Smith
22 Nov
SYD06:00Sydney Kingsford Smith
25h 01m
2 stops
STL14:01Lambert-St Louis

Fiji Airways flights from St. Louis to Sydney

Our best Fiji Airways deals on St. Louis to Sydney flight tickets
Fiji Airways
15 Nov
STL17:57Lambert-St Louis
25h 33m
2 stops
SYD12:30Sydney Kingsford Smith
22 Nov
SYD14:30Sydney Kingsford Smith
24h 59m
2 stops
STL22:29Lambert-St Louis
Fiji Airways
2 Dec
STL17:57Lambert-St Louis
34h 53m
2 stops
SYD21:50Sydney Kingsford Smith
9 Dec
SYD14:10Sydney Kingsford Smith
27h 02m
2 stops
STL00:12Lambert-St Louis
Fiji Airways
3 July
STL19:47Lambert-St Louis
25h 28m
2 stops
SYD12:15Sydney Kingsford Smith
5 July
SYD16:20Sydney Kingsford Smith
47h 09m
2 stops
STL00:29Lambert-St Louis

See travel insights to Sydney from

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 typical price of a round-trip flight between St. Louis and Sydney?

What is the cheapest month to fly to Sydney?

The month of August is, on average, the cheapest month to fly to Sydney from St. Louis, with most prices found around $1,914. If you aren’t able to travel to Sydney during the month of August, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $2,103.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from St. Louis to Sydney in the afternoon for as low as $1,906. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $2,682 on average. Flights to Sydney from St. Louis in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Sydney from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,238 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from St. Louis for as low as $1,934 on momondo.

When to book flights from St. Louis to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap St. Louis to Sydney (STL to SYD) flight deals and tips

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

Best price found

$669

Fastest flight time

20h 13m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from St. Louis in the past 72 hours is $669. The best return flight deal from St. Louis to Sydney found on momondo in the last 72 hours is $1,536.
The fastest flight from St. Louis to Sydney takes 20h 13m
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 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 13m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Lambert-St Louis Airport to Sydney Kingsford Smith Airport refresh daily.

  • How old do you have to be to fly from Lambert-St Louis Airport to Sydney Kingsford Smith Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Terrigal
Lithgow
Katoomba
Penrith
Leura
Manly
Coogee
Bondi Beach
Cronulla
Randwick
Charlestown
Newport
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Sydney?

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.

Can I find flights from St. Louis to Sydney with flexible booking policies on momondo?

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.

How can momondo help me find flights from St. Louis to Sydney?

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.

I’m not ready to book a flight from St. Louis to Sydney right now. Can momondo alert me if prices change?

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.


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