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$745+ 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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,223
(United Airlines)

One-way from

$745
(Delta)

Popular in

December

Cheapest in

August

Average price

$1,416
Provider with most accurate pricing for Kansas City-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Kansas City-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. 10% potential increase in price ($182 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 30, 2025.

This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:59 pmMCI - SYD
1 stop21h 56mUnited Airlines
Wed 9/1710:20 amSYD - MCI
1 stop21h 58mUnited Airlines
Deal found 4/30$1,223
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/183:42 pmMCI - SYD
1 stop23h 53mDelta
Sun 7/69:25 amSYD - MCI
1 stop20h 19mDelta
Deal found 4/30$1,236
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/246:28 amSTL - SYD
1 stop33h 37mQantas Airways
Tue 7/89:10 amSYD - STL
1 stop29h 11mQantas Airways
Deal found 4/29$1,279
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/19:07 pmMCI - SYD
1 stop43h 23mMultiple Airlines
Sun 6/85:45 pmSYD - MCI
1 stop41h 27mMultiple Airlines
Deal found 4/29$1,302
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:50 amSTL - SYD
2 stops30h 55mAir New Zealand
Sat 12/137:55 amSYD - STL
2 stops29h 26mAir New Zealand
Deal found 4/30$1,305
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/241:21 pmSTL - SYD
2 stops25h 44mAmerican Airlines
Tue 7/85:45 pmSYD - STL
1 stop20h 36mAmerican Airlines
Deal found 4/29$1,328
This Jetabroad deal was found by Cheapflights users on 4/30. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/163:24 pmSTL - SYD
2 stops32h 16mMultiple Airlines
Sat 8/301:45 pmSYD - STL
2 stops24h 29mMultiple Airlines
Deal found 4/30$1,343
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:15 amMCI - SYD
2 stops34h 20mAir New Zealand
Wed 10/2912:10 pmSYD - MCI
1 stop27h 59mAir New Zealand
Deal found 4/30$1,369
This oojo deal was found by Cheapflights users on 4/30. 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.
Thu 8/145:32 pmSTL - SYD
2 stops27h 43mFiji Airways
Mon 8/181:15 pmSYD - STL
2 stops24h 42mFiji Airways
Deal found 4/30$1,370
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/31:30 pmSTL - SYD
2 stops26h 05mDelta
Fri 10/1710:25 amSYD - STL
2 stops29h 14mDelta
Deal found 4/30$1,372
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/234:40 pmSTL - SYD
2 stops47h 20mUnited Airlines
Mon 9/19:30 amSYD - STL
2 stops24h 28mUnited Airlines
Deal found 4/30$1,479
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:30 amSTL - SYD
2 stops46h 15mAlaska Airlines
Thu 5/89:40 pmSYD - STL
2 stops55h 28mAlaska Airlines
Deal found 4/30$1,625

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 April 30, 2025.
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

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 9/3

5:59 pm-6:55 am

1 stop21h 56m

Sydney Kingsford Smith

Wed 9/17

10:20 am-5:18 pm

1 stop21h 58m

$1,223

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 6/18

3:42 pm-6:35 am

1 stop23h 53m

Sydney Kingsford Smith

Sun 7/6

9:25 am-2:44 pm

1 stop20h 19m

$1,236

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 6/24

6:28 am-7:05 am

1 stop33h 37m

Sydney Kingsford Smith

Tue 7/8

9:10 am-11:21 pm

1 stop29h 11m

$1,279

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Sun 6/1

9:07 pm-7:30 am

1 stop43h 23m

Sydney Kingsford Smith

Sun 6/8

5:45 pm-8:12 pm

1 stop41h 27m

$1,302

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 6/24

1:21 pm-6:05 am

2 stops25h 44m

Sydney Kingsford Smith

Tue 7/8

5:45 pm-11:21 pm

1 stop20h 36m

$1,328

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 8/16

3:24 pm-2:40 pm

2 stops32h 16m

Sydney Kingsford Smith

Sat 8/30

1:45 pm-11:14 pm

2 stops24h 29m

$1,343

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Thu 10/16

8:15 am-10:35 am

2 stops34h 20m

Sydney Kingsford Smith

Wed 10/29

12:10 pm-12:09 am

1 stop27h 59m

$1,369

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 8/14

5:32 pm-12:15 pm

2 stops27h 43m

Sydney Kingsford Smith

Mon 8/18

1:15 pm-10:57 pm

2 stops24h 42m

$1,370

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 10/3

1:30 pm-6:35 am

2 stops26h 05m

Sydney Kingsford Smith

Fri 10/17

10:25 am-11:39 pm

2 stops29h 14m

$1,372

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 10/3

5:43 pm-6:55 am

1 stop22h 12m

Sydney Kingsford Smith

Fri 10/17

9:55 am-7:04 pm

2 stops25h 09m

$1,413

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 22 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, March is the cheapest month in which you can book a flight from Missouri to Sydney (average of $1,043). Flying from Missouri to Sydney in December is currently the most expensive (average of $1,643). 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.

What is the cheapest time of day to fly from MO to SYD?

Find hourly flight availability from Missouri to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

When flying from Missouri to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated April 30, 2025.
To help decide which airline to fly from Missouri to Sydney, see what other customers have to say about ANA, Fiji Airways and Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
852 reviews

Entertainment

7.9

Food

7.6

Comfort

8.1

Crew

8.7

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
ANA
8.3
Very good
852 reviews
ANA
8.3
Very good
852 reviews

Entertainment

7.9

Food

7.6

Comfort

8.1

Crew

8.7

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Fiji Airways
8.1
Very good
190 reviews
ANA
8.3
Very good
852 reviews

Entertainment

7.9

Food

7.6

Comfort

8.1

Crew

8.7

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Alaska Airlines
8.0
Very good
9,968 reviews
ANA
8.3
Very good
852 reviews

Entertainment

7.9

Food

7.6

Comfort

8.1

Crew

8.7

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Delta
8.0
Very good
7,936 reviews
ANA
8.3
Very good
852 reviews

Entertainment

7.9

Food

7.6

Comfort

8.1

Crew

8.7

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Air New Zealand
8.0
Very good
472 reviews
ANA
8.3
Very good
852 reviews

Entertainment

7.9

Food

7.6

Comfort

8.1

Crew

8.7

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.

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.

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

    The most popular route from Missouri to Sydney is Kansas City - Sydney Kingsford Smith. You may also consider Lambert-St Louis - 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, March is the cheapest month in which you can book a flight from Missouri to Sydney (average of $1,043). Flying from Missouri to Sydney in December is currently the most expensive (average of $1,643). 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 Missouri?

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

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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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$848Average$1,463FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$962Average$1,329FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,173Average$1,855FlexibilityNo cancel feeOn-time78%
Qantas AirwaysCheapest$1,185Average$1,754FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,193Average$1,767FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,211Average$1,454FlexibilityNo cancel feeOn-timeN/A

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