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Cheap flights from St. Louis to Sydney from $1,132

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 4/6. 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

KAYAK's recommended return flight deals from the most popular airlines that fly from St. Louis to Sydney.
Fiji Airways Logo
19:59 - 12:15STL-SYD
25h 16m2 stops
Fiji Airways Logo
13:15 - 22:27SYD-STL
24h 12m2 stops
$1,939Fiji Airways
Find Deal
Thu, 11 Sep - Tue, 30 Sep
Air New Zealand Logo
08:27 - 08:45STL-SYD
32h 18m2 stops
Air New Zealand Logo
09:55 - 19:04SYD-STL
25h 09m2 stops
$2,103Air New Zealand
Find Deal
Tue, 14 Oct - Fri, 24 Oct
 Logo
13:39 - 10:35STL-SYD
29h 56m3 stops
 Logo
10:50 - 23:58SYD-STL
28h 08m3 stops
$2,284
Find Deal
Thu, 11 Sep - Tue, 30 Sep
United Airlines Logo
16:40 - 07:00STL-SYD
47h 20m2 stops
United Airlines Logo
09:30 - 22:08SYD-STL
27h 38m2 stops
$2,312United Airlines
Find Deal
Sat, 23 Aug - Mon, 1 Sep
American Airlines Logo
07:00 - 08:05STL-SYD
33h 05m1 stop
American Airlines Logo
10:10 - 22:53SYD-STL
28h 43m1 stop
$2,331American Airlines
Find Deal
Tue, 14 Oct - Fri, 24 Oct
Qantas Airways Logo
18:10 - 06:55STL-SYD
21h 45m1 stop
Qantas Airways Logo
09:10 - 22:57SYD-STL
28h 47m1 stop
$2,340Qantas Airways
Find Deal
Sat, 23 Aug - Mon, 1 Sep
American Airlines Logo
12:27 - 07:05STL-SYD
27h 38m2 stops
American Airlines Logo
09:10 - 18:33SYD-STL
24h 23m2 stops
$2,419American Airlines
Find Deal
Sat, 5 Jul - Sat, 12 Jul
 Logo
10:10 - 11:45STL-SYD
34h 35m3 stops
 Logo
14:40 - 10:33SYD-STL
34h 53m3 stops
$2,484
Find Deal
Sun, 8 Jun - Sun, 15 Jun
Qantas Airways Logo
06:44 - 07:05STL-SYD
33h 21m1 stop
Qantas Airways Logo
09:10 - 23:04SYD-STL
28h 54m1 stop
$2,656Qantas Airways
Find Deal
Sat, 24 May - Sat, 31 May
United Airlines Logo
13:41 - 06:55STL-SYD
26h 14m2 stops
United Airlines Logo
10:20 - 17:07SYD-STL
21h 47m1 stop
$3,375United Airlines
Find Deal
Thu, 8 May - Sun, 11 May

Air New Zealand flights from St. Louis to Sydney

Our best Air New Zealand deals on St. Louis to Sydney flight tickets
Air New Zealand
14 Oct
STL08:27Lambert-St Louis
32h 18m
2 stops
SYD08:45Sydney Kingsford Smith
24 Oct
SYD09:55Sydney Kingsford Smith
25h 09m
2 stops
STL19:04Lambert-St Louis
Air New Zealand
2 Oct
STL17:43Lambert-St Louis
22h 12m
1 stop
SYD06:55Sydney Kingsford Smith
12 Oct
SYD08:45Sydney Kingsford Smith
26h 19m
2 stops
STL19:04Lambert-St Louis
Air New Zealand
11 Sept
STL08:20Lambert-St Louis
33h 25m
2 stops
SYD08:45Sydney Kingsford Smith
30 Sept
SYD10:20Sydney Kingsford Smith
21h 22m
1 stop
STL16:42Lambert-St Louis

Fiji Airways flights from St. Louis to Sydney

Our best Fiji Airways deals on St. Louis to Sydney flight tickets
Fiji Airways
11 Sept
STL19:59Lambert-St Louis
25h 16m
2 stops
SYD12:15Sydney Kingsford Smith
30 Sept
SYD13:15Sydney Kingsford Smith
24h 12m
2 stops
STL22:27Lambert-St Louis
Fiji Airways
2 Oct
STL19:59Lambert-St Louis
25h 16m
2 stops
SYD12:15Sydney Kingsford Smith
12 Oct
SYD14:15Sydney Kingsford Smith
24h 38m
2 stops
STL22:53Lambert-St Louis
Fiji Airways
24 May
STL19:19Lambert-St Louis
25h 26m
2 stops
SYD11:45Sydney Kingsford Smith
31 May
SYD13:45Sydney Kingsford Smith
24h 19m
2 stops
STL23:04Lambert-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 November is, on average, the cheapest month to fly to Sydney from St. Louis, with most prices found around $2,172. If you aren’t able to travel to Sydney during the month of November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $2,195.

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

Our data shows that Monday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $0. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $2,757.

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 at midday. momondo users have found flights departing from St. Louis to Sydney at midday for as low as $0. 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 $2,757 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 26 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,389 when searching 26 weeks out.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 $1,950 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

$1,132

Fastest flight time

20h 17m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from St. Louis in the past 72 hours is $1,132. The best return flight deal from St. Louis to Sydney found on momondo in the last 72 hours is $1,939.
The fastest flight from St. Louis to Sydney takes 20h 17m
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 21h 45m.

  • 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
Katoomba
Lithgow
Penrith
Leura
Coogee
Manly
Cronulla
Bondi Beach
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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