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Cheap flights from Missouri to Sydney from $879

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Sydney departing on 14/3. 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

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Qantas Airways Logo
17:59 - 20:50STL-SYD
34h 51m2 stops
Qantas Airways Logo
18:45 - 23:09SYD-STL
20h 24m1 stop
$1,646Qantas Airways
Find Deal
Thu, 19 Mar - Thu, 2 Apr
Qantas Airways Logo
07:04 - 09:00STL-SYD
32h 56m1 stop
Qantas Airways Logo
17:50 - 15:04SYD-STL
38h 14m2 stops
$1,651Qantas Airways
Find Deal
Thu, 29 Jan - Wed, 18 Feb
Air Canada Logo
13:47 - 09:35MCI-SYD
26h 48m2 stops
Air Canada Logo
11:20 - 10:41SYD-MCI
40h 21m2 stops
$1,858Air Canada
Find Deal
Wed, 19 Nov - Wed, 26 Nov
Delta Logo
15:50 - 08:30MCI-SYD
23h 40m1 stop
Delta Logo
10:40 - 15:00SYD-MCI
21h 20m1 stop
$1,873Delta
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Fri, 28 Nov - Fri, 5 Dec
Delta Logo
06:30 - 06:50MCI-SYD
31h 20m2 stops
Delta Logo
10:40 - 14:49SYD-MCI
21h 09m1 stop
$1,879Delta
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Thu, 15 Jan - Sat, 24 Jan
American Airlines Logo
07:00 - 06:55STL-SYD
30h 55m1 stop
American Airlines Logo
14:05 - 22:34SYD-STL
25h 29m1 stop
$1,900American Airlines
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Wed, 12 Nov - Sun, 23 Nov
Air Canada Logo
16:43 - 09:35STL-SYD
23h 52m2 stops
Air Canada Logo
11:20 - 16:28SYD-STL
46h 08m2 stops
$1,902Air Canada
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Wed, 26 Nov - Wed, 3 Dec
American Airlines Logo
13:20 - 09:00STL-SYD
26h 40m2 stops
American Airlines Logo
11:20 - 16:32SYD-STL
22h 12m2 stops
$1,905American Airlines
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Wed, 12 Nov - Sun, 23 Nov
United Airlines Logo
11:20 - 07:00STL-SYD
26h 40m1 stop
United Airlines Logo
12:10 - 17:03SYD-STL
21h 53m2 stops
$1,916United Airlines
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Mon, 1 Dec - Wed, 17 Dec
United Airlines Logo
16:35 - 07:00MCI-SYD
21h 25m1 stop
United Airlines Logo
12:10 - 16:37SYD-MCI
21h 27m1 stop
$1,923United Airlines
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Wed, 19 Nov - Wed, 26 Nov

Qantas Airways flights from Missouri to Sydney

Our best Qantas Airways deals on Missouri to Sydney flight tickets
Qantas Airways
19 Mar
STL17:59Lambert-St Louis
34h 51m
2 stops
SYD20:50Sydney Kingsford Smith
2 Apr
SYD18:45Sydney Kingsford Smith
20h 24m
1 stop
STL23:09Lambert-St Louis
$1,646
Find similar
Qantas Airways
29 Jan
STL07:04Lambert-St Louis
32h 56m
1 stop
SYD09:00Sydney Kingsford Smith
18 Feb
SYD17:50Sydney Kingsford Smith
38h 14m
2 stops
STL15:04Lambert-St Louis
$1,651
Find similar
Qantas Airways
12 Nov
STL07:00Lambert-St Louis
33h 50m
2 stops
SYD09:50Sydney Kingsford Smith
23 Nov
SYD14:05Sydney Kingsford Smith
19h 27m
1 stop
STL16:32Lambert-St Louis
$1,891
Find similar

Air Canada flights from Missouri to Sydney

Our best Air Canada deals on Missouri to Sydney flight tickets
Air Canada
19 Nov
MCI13:47Kansas City
26h 48m
2 stops
SYD09:35Sydney Kingsford Smith
26 Nov
SYD11:20Sydney Kingsford Smith
40h 21m
2 stops
MCI10:41Kansas City
$1,858
Find similar
Air Canada
26 Nov
STL16:43Lambert-St Louis
23h 52m
2 stops
SYD09:35Sydney Kingsford Smith
3 Dec
SYD11:20Sydney Kingsford Smith
46h 08m
2 stops
STL16:28Lambert-St Louis
$1,902
Find similar
Air Canada
19 Apr
STL16:05Lambert-St Louis
48h 15m
2 stops
SYD07:20Sydney Kingsford Smith
25 Apr
SYD09:20Sydney Kingsford Smith
45h 04m
2 stops
STL15:24Lambert-St Louis
$1,925
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Missouri to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 31 October 2025.
Use the filters below to find and compare flights from Missouri to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 19/3

17:59-20:50

2 stops34h 51m

Sydney Kingsford Smith

Thu 2/4

18:45-23:09

1 stop20h 24m

$1,646

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 29/1

07:04-09:00

1 stop32h 56m

Sydney Kingsford Smith

Wed 18/2

17:50-15:04

2 stops38h 14m

$1,651

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 19/11

13:47-09:35

2 stops26h 48m

Sydney Kingsford Smith

Wed 26/11

11:20-10:41

2 stops40h 21m

$1,858

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Fri 28/11

15:50-08:30

1 stop23h 40m

Sydney Kingsford Smith

Fri 5/12

10:40-15:00

1 stop21h 20m

$1,873

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Thu 15/1

06:30-06:50

2 stops31h 20m

Sydney Kingsford Smith

Sat 24/1

10:40-14:49

1 stop21h 09m

$1,879

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 12/11

07:00-06:55

1 stop30h 55m

Sydney Kingsford Smith

Sun 23/11

14:05-22:34

1 stop25h 29m

$1,900

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 26/11

16:43-09:35

2 stops23h 52m

Sydney Kingsford Smith

Wed 3/12

11:20-16:28

2 stops46h 08m

$1,902

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 12/11

13:20-09:00

2 stops26h 40m

Sydney Kingsford Smith

Sun 23/11

11:20-16:32

2 stops22h 12m

$1,905

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 1/12

11:20-07:00

1 stop26h 40m

Sydney Kingsford Smith

Wed 17/12

12:10-17:03

2 stops21h 53m

$1,916

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 19/11

16:35-07:00

1 stop21h 25m

Sydney Kingsford Smith

Wed 26/11

12:10-16:37

1 stop21h 27m

$1,923

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Missouri 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 to Sydney?

The month of March is, on average, the cheapest month to fly to Sydney from Missouri, with most prices found around $1,951. If you aren’t able to travel to Sydney during the month of March, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $1,955.

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

Our data shows that Wednesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $2,170. The most expensive day to fly to Sydney is Monday, with ticket prices averaging around $2,279.

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 Missouri to Sydney in the afternoon for as low as $2,200. 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 $2,768 on average. Flights to Sydney from Missouri 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 Missouri 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 Missouri for as low as $1,855 on momondo.

Can stopping save me money on Missouri to Sydney flights?

You could potentially save up to 7% on your flight if you consider stops on a Missouri to Sydney flight.

Cheap Missouri to Sydney flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Sydney

Direct flights

None
There are no direct flights from Missouri to Sydney. There are no popular flight routes from Missouri to Sydney.
Search flight deals

  • When did momondo last update prices for flights from Missouri to Sydney Kingsford Smith Airport?

    Prices for flights from Missouri to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Missouri to Sydney Kingsford Smith Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Missouri to Sydney Kingsford Smith Airport.

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

    The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Sydney?

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

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Sydney?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Missouri to Sydney . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Missouri to Sydney with flexible booking policies on momondo?

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

How can momondo help me find flights from Missouri 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 Missouri to Sydney.

I’m not ready to book a flight from Missouri 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 Missouri and alert you when they change.

An easier way to manage your Sydney trip

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