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$512+ Cheap flights from Missouri to Sydney (SYD)

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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Missouri to Sydney

Keep the following information in mind while searching for Missouri to Sydney flight deals. Data was last updated January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$962
(oojo)

One-way from

$512
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,460
Provider with most accurate pricing for Lambert-St Louis-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Sydney Kingsford Smith flights.
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From Missouri to Sydney Kingsford Smith
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One-way flight from Missouri to Sydney Kingsford Smith
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Highest demand for flights based on searches. 2% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Missouri to Sydney

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 January 8, 2026.

This oojo deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/156:38 amSTL - SYD
1 stop34h 22mQantas Airways
Tue 3/245:50 pmSYD - STL
2 stops37h 38mQantas Airways
Deal found 1/7$962
This FlightHub deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/74:13 pmSTL - SYD
2 stops46h 22mQantas Airways
Sat 3/1411:20 amSYD - STL
1 stop28h 39mQantas Airways
Deal found 1/7$1,021
This oojo deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/214:42 pmSTL - SYD
2 stops36h 08mQantas Airways
Fri 4/36:50 pmSYD - STL
1 stop21h 09mQantas Airways
Deal found 1/6$1,119
This Air Canada deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/42:45 pmSTL - SYD
2 stops25h 50mMultiple Airlines
Tue 3/1010:20 amSYD - STL
2 stops45h 09mMultiple Airlines
Deal found 1/7$1,144
This Air Canada deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/214:05 pmSTL - SYD
2 stops48h 30mAir Canada
Wed 2/2511:20 amSYD - STL
2 stops45h 09mAir Canada
Deal found 1/6$1,151
This oojo deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:36 amSTL - SYD
2 stops39h 39mQantas Airways
Mon 6/1512:00 pmSYD - STL
1 stop21h 30mQantas Airways
Deal found 1/8$1,181
This Air Canada deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:05 pmSTL - SYD
2 stops48h 15mAir Canada
Sat 4/119:20 amSYD - STL
2 stops45h 04mAir Canada
Deal found 1/6$1,193
This oojo deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:44 pmSTL - SYD
2 stops26h 56mAir New Zealand
Mon 5/1811:55 amSYD - STL
2 stops25h 31mAir New Zealand
Deal found 1/6$1,212
This oojo deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/65:49 pmMCI - SYD
2 stops45h 26mQantas Airways
Fri 2/1310:00 pmSYD - MCI
2 stops37h 50mQantas Airways
Deal found 1/7$1,222
This oojo deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 amMCI - SYD
2 stops34h 45mAir New Zealand
Wed 5/2011:55 amSYD - MCI
2 stops25h 32mAir New Zealand
Deal found 1/6$1,225
This oojo deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 amMCI - SYD
2 stops34h 45mAir New Zealand
Wed 9/3010:55 amSYD - MCI
2 stops26h 12mAir New Zealand
Deal found 1/6$1,226
This oojo deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/91:58 pmMCI - SYD
2 stops26h 02mQantas Airways
Sun 3/1510:00 pmSYD - MCI
2 stops37h 03mQantas Airways
Deal found 1/7$1,227

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Missouri to Sydney that are best for you.

Fly from

Missouri

Fly to

Sydney

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 2/21

6:38 am-9:10 am

2 stops57h 32m

Sydney Kingsford Smith

Sat 2/28

11:20 am-11:59 pm

1 stop29h 39m

$962

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 2/21

6:38 am-9:00 am

1 stop33h 22m

Sydney Kingsford Smith

Wed 2/25

5:50 pm-3:28 pm

2 stops38h 38m

$962

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 3/15

6:38 am-9:00 am

1 stop34h 22m

Sydney Kingsford Smith

Tue 3/24

5:50 pm-3:28 pm

2 stops37h 38m

$962

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 2/21

4:05 pm-9:35 am

2 stops48h 30m

Sydney Kingsford Smith

Wed 2/25

11:20 am-3:29 pm

2 stops45h 09m

$1,151

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 6/1

6:36 am-1:15 pm

2 stops39h 39m

Sydney Kingsford Smith

Mon 6/15

12:00 pm-6:30 pm

1 stop21h 30m

$1,181

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 4/6

4:05 pm-7:20 am

2 stops48h 15m

Sydney Kingsford Smith

Sat 4/11

9:20 am-3:24 pm

2 stops45h 04m

$1,193

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 4/12

4:05 pm-7:20 am

2 stops48h 15m

Sydney Kingsford Smith

Sat 4/18

9:20 am-3:24 pm

2 stops45h 04m

$1,193

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/4

4:44 pm-8:45 am

2 stops25h 01m

Sydney Kingsford Smith

Mon 5/18

9:55 am-10:26 pm

2 stops27h 31m

$1,217

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Fri 2/6

5:49 pm-8:15 am

2 stops45h 26m

Sydney Kingsford Smith

Fri 2/13

10:00 pm-6:50 pm

2 stops37h 50m

$1,222

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Mon 3/9

1:58 pm-8:00 am

2 stops26h 02m

Sydney Kingsford Smith

Sun 3/15

10:00 pm-7:03 pm

2 stops37h 03m

$1,227

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 36 results
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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 round-trip 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, October is the cheapest month in which you can book a flight from Missouri to Sydney (average of $611). Flying from Missouri to Sydney in July is currently the most expensive (average of $1,238). 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.

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?

    Sydney Kingsford Smith (SYD) is the airport you will fly into if you book a flight from Missouri to Sydney. It is only a 4.6 mi journey from Kingsford Smith (SYD) to Sydney’s city center.

  • How long is the flight from Missouri to Sydney?

    For as low as $1,293, Qantas Airways can have you in Sydney from Missouri in 37h 24m. The distance from Missouri to Sydney is about 8839 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Missouri to Sydney?

    The most popular route from Missouri to Sydney is Lambert-St Louis - Sydney Kingsford Smith. You may also consider Kansas City - Sydney Kingsford Smith or Columbia Regional - Sydney Kingsford Smith.

  • 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 vacation 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, October is the cheapest month in which you can book a flight from Missouri to Sydney (average of $611). Flying from Missouri to Sydney in July is currently the most expensive (average of $1,238). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

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Top 6 airlines flying from Missouri to Sydney

Discover the top 6 airlines that operate flights from Missouri to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$822Average$1,286FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$897Average$1,191FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$1,044Average$1,486FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,130Average$1,446FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$1,132Average$1,222FlexibilityNo cancel feeOn-time74%
DeltaCheapest$1,160Average$1,457FlexibilityNo cancel feeOn-timeN/A

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