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$448+ Cheap flights from Missouri to Australia

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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Cheap flight deals from Missouri to Australia

Keep the following information in mind while searching for Missouri to Australia flight deals. Data was last updated March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,248
(Air Canada)

One-way from

$448
(Jetabroad)

Popular in

December

Cheapest in

November

Average price

$1,441
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 Australia
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One-way flight from Missouri to Australia
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Highest demand for flights based on searches. 9% potential increase in price ($160 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Missouri to Australia

Cheapest flights from Missouri to Australia
Explore the most affordable flight options available from Missouri to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This Jetabroad deal was found by Cheapflights users on 3/31. 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 11/12:55 pmSTL - SYD
2 stops32h 40mMultiple Airlines
Sat 11/156:00 amSYD - STL
2 stops33h 29mMultiple Airlines
Deal found 3/31$1,161
This StudentUniverse deal was found by Cheapflights users on 3/31. 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.
Tue 4/15:37 pmSTL - SYD
2 stops36h 33mFiji Airways
Tue 4/86:15 amSYD - STL
2 stops31h 13mFiji Airways
Deal found 3/31$1,199
This Air Canada deal was found by Cheapflights users on 3/31. 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 5/281:30 pmSTL - SYD
2 stops50h 50mAir Canada
Mon 6/169:20 amSYD - STL
2 stops42h 16mAir Canada
Deal found 3/31$1,248
This Air Canada deal was found by Cheapflights users on 3/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/91:30 pmSTL - BNE
2 stops26h 35mAir Canada
Mon 9/2210:00 amBNE - STL
2 stops44h 16mAir Canada
Deal found 3/30$1,290
This United deal was found by Cheapflights users on 3/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/226:00 amMCI - BNE
2 stops33h 30mUnited Airlines
Fri 12/2611:40 amBNE - MCI
2 stops42h 46mUnited Airlines
Deal found 3/30$1,334
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/226:15 amSTL - BNE
2 stops33h 15mUnited Airlines
Fri 12/2611:40 amBNE - STL
2 stops43h 41mUnited Airlines
Deal found 3/31$1,334
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/39:17 amMCI - SYD
2 stops31h 03mAir Canada
Wed 9/179:20 amSYD - MCI
2 stops29h 08mAir Canada
Deal found 3/30$1,347
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1011:22 amSTL - MEL
2 stops29h 53mUnited Airlines
Tue 6/2410:55 amMEL - STL
2 stops38h 44mUnited Airlines
Deal found 3/31$1,444
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Wed 7/21:21 pmSTL - SYD
2 stops26h 44mAmerican Airlines
Mon 7/149:10 amSYD - STL
1 stop29h 10mAmerican Airlines
Deal found 3/31$1,446
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/296:05 pmMCI - MEL
1 stop23h 10mUnited Airlines
Tue 8/2610:55 amMEL - MCI
1 stop21h 33mUnited Airlines
Deal found 3/31$1,450
This Gurufare deal was found by Cheapflights users on 3/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/34:26 pmMCI - SYD
1 stop23h 29mQantas Airways
Wed 9/1712:10 pmSYD - MCI
1 stop23h 06mQantas Airways
Deal found 3/30$1,451
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Mon 6/235:20 pmMCI - SYD
2 stops22h 40mUnited Airlines
Wed 7/29:30 amSYD - MCI
2 stops28h 44mUnited Airlines
Deal found 3/30$1,461

Cheapflights Fare Finder

Customize your flight search to find flights from Missouri to Australia 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 March 31, 2025.
Use the filters below to find and compare flights from Missouri to Australia that are best for you.

Fly from

Missouri

Fly to

Australia

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 5/28

1:30 pm-7:20 am

2 stops50h 50m

Sydney Kingsford Smith

Mon 6/16

9:20 am-12:36 pm

2 stops42h 16m

$1,248

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Tue 9/9

1:30 pm-7:05 am

2 stops26h 35m

Brisbane

Mon 9/22

10:00 am-3:16 pm

2 stops44h 16m

$1,290

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 6/3

7:19 pm-11:45 am

2 stops25h 26m

Sydney Kingsford Smith

Thu 6/12

1:15 pm-8:59 pm

2 stops22h 44m

$1,308

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 9/3

9:17 am-7:20 am

2 stops31h 03m

Sydney Kingsford Smith

Wed 9/17

9:20 am-11:28 pm

2 stops29h 08m

$1,347

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 6/10

11:22 am-8:15 am

2 stops29h 53m

Melbourne

Tue 6/24

10:55 am-10:39 am

2 stops38h 44m

$1,444

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 7/2

1:21 pm-7:05 am

2 stops26h 44m

Sydney Kingsford Smith

Mon 7/14

9:10 am-11:20 pm

1 stop29h 10m

$1,446

Kansas CityMelbourne

MCI - MEL

MCIMEL

Kansas City

Tue 7/29

6:05 pm-8:15 am

1 stop23h 10m

Melbourne

Tue 8/26

10:55 am-5:28 pm

1 stop21h 33m

$1,450

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 9/3

4:26 pm-6:55 am

1 stop23h 29m

Sydney Kingsford Smith

Wed 9/17

12:10 pm-8:16 pm

1 stop23h 06m

$1,451

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Mon 6/23

6:12 pm-6:55 am

1 stop21h 43m

Sydney Kingsford Smith

Tue 7/1

9:30 am-11:31 pm

2 stops29h 01m

$1,461

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/1

3:40 pm-7:00 am

2 stops24h 20m

Sydney Kingsford Smith

Mon 6/16

9:30 am-8:48 pm

2 stops26h 18m

$1,461

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 40 results
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Best time to book a flight from Missouri to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

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

Currently, February is the cheapest month in which you can book a flight from Missouri to Australia (average of $1,046). Flying from Missouri to Australia 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 AU?

Find hourly flight availability from Missouri to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Australia as you normally would.

Rainfall in Australia by month

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

In terms of precipitation, rainfall in Australia 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 Australia when rainfall is around 2.0 in.

Temperature in Australia by month

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

If weather is an important factor for your trip to Australia, 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 Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated March 31, 2025.
Peruse reviews from past customers who have flown with ANA, Fiji Airways and Emirates from Missouri to Australia to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
831 reviews

Entertainment

7.9

Comfort

8.2

Food

7.6

Boarding

8.5

Crew

8.7

Overall

8.3

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
831 reviews
ANA
8.3
Very good
831 reviews

Entertainment

7.9

Comfort

8.2

Food

7.6

Boarding

8.5

Crew

8.7

Overall

8.3

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
8.0
Very good
180 reviews
ANA
8.3
Very good
831 reviews

Entertainment

7.9

Comfort

8.2

Food

7.6

Boarding

8.5

Crew

8.7

Overall

8.3

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.
Emirates
8.0
Very good
3,192 reviews
ANA
8.3
Very good
831 reviews

Entertainment

7.9

Comfort

8.2

Food

7.6

Boarding

8.5

Crew

8.7

Overall

8.3

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
7,899 reviews
ANA
8.3
Very good
831 reviews

Entertainment

7.9

Comfort

8.2

Food

7.6

Boarding

8.5

Crew

8.7

Overall

8.3

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
9,818 reviews
ANA
8.3
Very good
831 reviews

Entertainment

7.9

Comfort

8.2

Food

7.6

Boarding

8.5

Crew

8.7

Overall

8.3

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 Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Missouri to Australia one-way?

    The cheapest airlines for a one-way flight from Missouri to Australia are Air Canada ($780), ANA ($818), and Delta ($839).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missouri to Australia 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 Australia?

    Currently, February is the cheapest month in which you can book a flight from Missouri to Australia (average of $1,046). Flying from Missouri to Australia 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

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Top 6 airlines flying from Missouri to Australia

Discover the top 6 airlines that operate flights from Missouri to Australia. 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$687Average$1,980FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$848Average$1,608FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$962Average$1,337FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,025Average$1,772FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,164Average$1,716FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,211Average$1,489FlexibilityNo cancel feeOn-timeN/A
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