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Cheap flights from St. Louis to Sydney from $2,083

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Sydney departing on 28/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Air Canada Logo
13:30 - 07:20STL-SYD
50h 50m3 stops
Air Canada Logo
09:20 - 12:36SYD-STL
42h 16m2 stops
$2,083Air Canada
Find Deal
Wed, 28 May - Tue, 3 Jun
Air Canada Logo
07:30 - 07:20STL-SYD
56h 50m2 stops
Air Canada Logo
09:20 - 19:43SYD-STL
49h 23m2 stops
$2,246Air Canada
Find Deal
Wed, 28 May - Tue, 3 Jun
American Airlines Logo
06:52 - 07:05STL-SYD
33h 13m1 stop
American Airlines Logo
09:10 - 22:57SYD-STL
28h 47m1 stop
$2,364American Airlines
Find Deal
Mon, 2 Jun - Wed, 13 Aug
American Airlines Logo
06:52 - 07:05STL-SYD
33h 13m1 stop
American Airlines Logo
09:10 - 16:08SYD-STL
21h 58m2 stops
$2,373American Airlines
Find Deal
Mon, 2 Jun - Wed, 13 Aug
Qantas Airways Logo
18:10 - 06:55STL-SYD
21h 45m1 stop
Qantas Airways Logo
09:10 - 22:57SYD-STL
28h 47m1 stop
$2,486Qantas Airways
Find Deal
Sat, 23 Aug - Mon, 1 Sep
Air New Zealand Logo
18:15 - 08:45STL-SYD
23h 30m2 stops
Air New Zealand Logo
09:55 - 22:15SYD-STL
27h 20m2 stops
$2,576Air New Zealand
Find Deal
Fri, 11 Jul - Sun, 20 Jul
Air New Zealand Logo
19:10 - 06:55STL-SYD
20h 45m1 stop
Air New Zealand Logo
18:20 - 20:49SYD-STL
41h 29m2 stops
$2,602Air New Zealand
Find Deal
Wed, 28 May - Tue, 3 Jun
United Airlines Logo
10:15 - 07:00STL-SYD
29h 45m2 stops
United Airlines Logo
10:20 - 16:45SYD-STL
21h 25m1 stop
$2,632United Airlines
Find Deal
Fri, 11 Jul - Sun, 20 Jul
Qantas Airways Logo
06:25 - 07:05STL-SYD
33h 40m1 stop
Qantas Airways Logo
10:25 - 17:06SYD-STL
21h 41m1 stop
$2,706Qantas Airways
Find Deal
Fri, 11 Jul - Sun, 20 Jul
United Airlines Logo
16:45 - 06:55STL-SYD
47h 10m2 stops
United Airlines Logo
09:30 - 18:53SYD-STL
24h 23m2 stops
$6,458United Airlines
Find Deal
Sat, 28 Jun - Sun, 27 Jul

American Airlines flights from St. Louis to Sydney

Our best American Airlines deals on St. Louis to Sydney flight tickets
American Airlines
2 June
STL06:52Lambert-St Louis
33h 13m
1 stop
SYD07:05Sydney Kingsford Smith
13 Aug
SYD09:10Sydney Kingsford Smith
28h 47m
1 stop
STL22:57Lambert-St Louis
American Airlines
2 June
STL06:52Lambert-St Louis
33h 13m
1 stop
SYD07:05Sydney Kingsford Smith
13 Aug
SYD09:10Sydney Kingsford Smith
21h 58m
2 stops
STL16:08Lambert-St Louis
American Airlines
28 May
STL15:58Lambert-St Louis
24h 07m
2 stops
SYD07:05Sydney Kingsford Smith
16 June
SYD09:10Sydney Kingsford Smith
28h 49m
1 stop
STL22:59Lambert-St Louis

Air Canada flights from St. Louis to Sydney

Our best Air Canada deals on St. Louis to Sydney flight tickets
Air Canada
28 May
STL13:30Lambert-St Louis
50h 50m
3 stops
SYD07:20Sydney Kingsford Smith
3 June
SYD09:20Sydney Kingsford Smith
42h 16m
2 stops
STL12:36Lambert-St Louis
Air Canada
28 May
STL07:30Lambert-St Louis
56h 50m
2 stops
SYD07:20Sydney Kingsford Smith
3 June
SYD09:20Sydney Kingsford Smith
49h 23m
2 stops
STL19:43Lambert-St Louis
Air Canada
2 June
STL13:30Lambert-St Louis
50h 50m
3 stops
SYD07:20Sydney Kingsford Smith
13 Aug
SYD09:20Sydney Kingsford Smith
45h 01m
2 stops
STL15:21Lambert-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 $2,311. 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 $2,336.

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 $2,935.

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 $2,935 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 $2,564 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 $2,075 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

$2,083

Fastest flight time

20h 45m

Direct flights

None

Airports in Sydney

1 airport
The best flight deal from St. Louis to Sydney found on momondo in the last 72 hours is $2,083
The fastest flight from St. Louis to Sydney takes 20h 45m
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 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
Katoomba
Terrigal
Lithgow
Penrith
Leura
Manly
Coogee
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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