Find flights
When to book
FAQs

Cheap flights from Missouri to Sydney from $867

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/8. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — SYD
12 Aug — 19 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Missouri to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Missouri to Sydney
Explore the most affordable flight options available from Missouri to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 July 2026.

Wed 12/806:00
STL
-
SYD
1 stop34h 05m
Qantas Airways
Sun 30/809:10
SYD
-
STL
1 stop28h 49m
Qantas Airways
Deal found 9/7$1,626
Mon 17/815:32
STL
-
SYD
1 stop24h 23m
Qantas Airways
Mon 24/812:00
SYD
-
STL
1 stop21h 05m
Qantas Airways
Deal found 10/7$1,681
Sun 26/719:23
STL
-
SYD
1 stop20h 32m
United Airlines
Sun 9/810:20
SYD
-
STL
1 stop22h 57m
United Airlines
Deal found 11/7$1,694
Thu 19/1114:54
MCI
-
SYD
1 stop23h 01m
Qantas Airways
Wed 25/1106:00
SYD
-
MCI
2 stops27h 43m
Qantas Airways
Deal found 12/7$1,696
Wed 5/806:01
STL
-
SYD
2 stops33h 54m
United Airlines
Wed 12/810:20
SYD
-
STL
1 stop23h 19m
United Airlines
Deal found 8/7$1,706
Wed 12/812:52
STL
-
SYD
2 stops26h 58m
Delta
Sun 30/809:15
SYD
-
STL
2 stops29h 43m
Delta
Deal found 8/7$1,713
Wed 12/817:11
STL
-
SYD
1 stop22h 44m
American Airlines
Sun 30/809:10
SYD
-
STL
2 stops23h 55m
American Airlines
Deal found 9/7$1,716
Sat 15/814:09
MCI
-
SYD
1 stop25h 46m
Qantas Airways
Mon 24/812:00
SYD
-
MCI
1 stop21h 34m
Qantas Airways
Deal found 11/7$1,723
Tue 13/1006:04
STL
-
SYD
1 stop34h 01m
Qantas Airways
Tue 27/1007:05
SYD
-
STL
2 stops25h 57m
Qantas Airways
Deal found 11/7$1,733
Sat 24/1019:10
STL
-
SYD
2 stops30h 30m
Qantas Airways
Tue 3/1111:20
SYD
-
STL
1 stop29h 22m
Qantas Airways
Deal found 11/7$1,760
Sat 18/716:26
MCI
-
SYD
1 stop23h 34m
United Airlines
Wed 29/710:20
SYD
-
MCI
2 stops28h 10m
United Airlines
Deal found 13/7$1,777
Sat 15/814:09
MCI
-
SYD
2 stops25h 56m
American Airlines
Mon 24/812:00
SYD
-
MCI
2 stops24h 45m
American Airlines
Deal found 11/7$1,779

Find flight deals from Missouri to Sydney

Keep the following information in mind while searching for Missouri to Sydney flight deals. Data was last updated 13 July 2026.

Round-trip from

$1,626

One-way from

$867

Popular in

December

Cheapest in

July

Average price

$1,670
Qantas Airways
  • Qantas Airways
  • 12/8-30/8
  • 2 total stops
  • 62h 54m total
  • Missouri to Sydney
Search Deals
Qantas Airways
  • Qantas Airways
  • 30/8
  • 1 total stop
  • 24h 20m total
  • Missouri to Sydney
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($217 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($46 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights 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, Cheapflights users made 647,157 searches. Data last updated 13 July 2026.
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

Cheapest return flight

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 7/8

16:48-06:55

2 stops23h 07m

Sydney Kingsford Smith

Fri 14/8

10:20-18:39

1 stop23h 19m

$1,849
Fastest return journey

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Thu 20/8

17:13-06:55

2 stops22h 42m

Sydney Kingsford Smith

Fri 28/8

10:20-16:11

2 stops20h 51m

$1,857

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Sat 22/8

09:14-07:00

2 stops30h 46m

Sydney Kingsford Smith

Sat 5/9

10:20-14:33

1 stop19h 13m

$1,857

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 23/9

16:40-07:00

2 stops23h 20m

Sydney Kingsford Smith

Wed 7/10

11:20-18:43

1 stop23h 23m

$1,878

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 13/10

10:02-07:50

2 stops29h 48m

Sydney Kingsford Smith

Tue 27/10

09:40-16:38

2 stops22h 58m

$1,885

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 1/10

15:11-06:55

2 stops24h 44m

Sydney Kingsford Smith

Mon 12/10

10:30-18:43

2 stops24h 13m

$1,957

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Thu 6/8

15:52-06:50

1 stop23h 58m

Sydney Kingsford Smith

Wed 12/8

09:15-00:13

2 stops29h 58m

$2,371

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 12/8

06:00-07:30

1 stop34h 30m

Sydney Kingsford Smith

Sun 16/8

09:10-22:59

1 stop28h 49m

$2,410

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 23/9

13:36-08:45

3 stops28h 09m

Sydney Kingsford Smith

Wed 7/10

09:55-22:59

3 stops29h 04m

$2,507

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 24/8

13:36-07:00

2 stops26h 24m

Sydney Kingsford Smith

Mon 31/8

10:20-12:40

2 stops41h 20m

$2,580

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 25 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Missouri to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Missouri with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Sydney

What is the cheapest month to book a flight from Missouri to Sydney?

Currently, May is the cheapest month in which you can book a flight from Missouri to Sydney (average of $446). Flying from Missouri to Sydney in June is currently the most expensive (average of $1,645). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Missouri to Sydney?

Related info for your journey

Find useful and relevant information for your journey from Missouri to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Missouri?

    If you book a flight to Sydney from Missouri, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 7.5 km from the centre of Sydney.

  • How long is the flight from Missouri to Sydney?

    Airlines like United Airlines, Delta, and Qantas Airways fly from Missouri to Sydney in about 23h 07m. The time it takes to get you to your destination can typically vary by up to 11h 23m. Airlines will cover a distance of 14571 km. This flight may include one or multiple stops.

  • Can I find deals for flights from Missouri to Sydney that include hotel bookings?

    Yes. In addition to deals on Missouri to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Sydney.

  • Can I find deals for business class flights from Missouri to Sydney?

    Yes. Cheapflights offers flight deals from Missouri to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to Sydney?

    Currently, May is the cheapest month in which you can book a flight from Missouri to Sydney (average of $446). Flying from Missouri to Sydney in June is currently the most expensive (average of $1,645). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Missouri to Sydney?

Deals for Missouri to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Missouri to Sydney?

Cheapflights simply makes it quick and affordable to book flights from Missouri to Sydney by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Missouri to Sydney with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Missouri to Sydney flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Missouri to Sydney become cheaper?

Of course! You can now track prices for flights from Missouri to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.