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$506+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$830
(United Airlines)

One-way from

$506
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,418
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. 10% potential increase in price ($176 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 30, 2025.

This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/149:01 amCOU - SYD
2 stops30h 59mUnited Airlines
Tue 10/2111:20 amSYD - COU
2 stops25h 05mUnited Airlines
Deal found 6/29$830
This Ovago deal was found by Cheapflights users on 6/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:26 pmMCI - SYD
1 stop21h 29mQantas Airways
Wed 9/1712:10 pmSYD - MCI
1 stop20h 15mQantas Airways
Deal found 6/28$994
This Gurufare deal was found by Cheapflights users on 6/29. 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.
Thu 12/111:55 pmSTL - BNE
1 stop24h 35mQantas Airways
Fri 12/269:45 amBNE - STL
1 stop22h 26mQantas Airways
Deal found 6/29$996
This oojo deal was found by Cheapflights users on 6/30. 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.
Fri 11/284:07 pmSTL - SYD
2 stops25h 48mQantas Airways
Sun 12/142:20 pmSYD - STL
1 stop18h 47mQantas Airways
Deal found 6/30$1,010
This Orbitz deal was found by Cheapflights users on 6/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:00 amMCI - SYD
2 stops34h 20mAir Canada
Thu 10/29:20 amSYD - MCI
2 stops29h 10mAir Canada
Deal found 6/27$1,039
This Air Canada deal was found by Cheapflights users on 6/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:45 pmMCI - SYD
2 stops26h 35mMultiple Airlines
Wed 9/179:20 amSYD - MCI
2 stops26h 22mMultiple Airlines
Deal found 6/29$1,048
This FlightHub deal was found by Cheapflights users on 6/28. 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.
Mon 11/101:35 pmSTL - BNE
2 stops27h 10mAir Canada
Thu 11/1310:45 amBNE - STL
2 stops44h 44mAir Canada
Deal found 6/28$1,062
This American Airlines deal was found by Cheapflights users on 6/28. 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 9/31:03 pmMCI - SYD
2 stops27h 02mAmerican Airlines
Wed 9/179:10 amSYD - MCI
2 stops22h 58mAmerican Airlines
Deal found 6/28$1,063
This Delta deal was found by Cheapflights users on 6/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:51 amSTL - BNE
2 stops27h 54mDelta
Fri 12/2610:45 amBNE - STL
2 stops38h 43mDelta
Deal found 6/29$1,071
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Tue 8/126:05 pmMCI - SYD
1 stop21h 50mUnited Airlines
Thu 10/29:30 amSYD - MCI
2 stops27h 15mUnited Airlines
Deal found 6/27$1,074
This Delta deal was found by Cheapflights users on 6/30. 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 9/55:45 amMCI - SYD
2 stops33h 50mDelta
Sat 9/209:25 amSYD - MCI
1 stop20h 18mDelta
Deal found 6/30$1,080
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:45 pmSTL - BNE
2 stops44h 45mUnited Airlines
Mon 12/2911:40 amBNE - STL
2 stops23h 45mUnited Airlines
Deal found 6/29$1,087

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 June 30, 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

ColumbiaSydney

COU - SYD

COUSYD

Columbia Regional

Tue 10/14

9:01 am-8:00 am

2 stops30h 59m

Sydney Kingsford Smith

Tue 10/21

11:20 am-8:25 pm

2 stops25h 05m

$830

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 9/3

6:26 pm-6:55 am

1 stop21h 29m

Sydney Kingsford Smith

Wed 9/17

12:10 pm-5:25 pm

1 stop20h 15m

$994

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Thu 12/11

1:55 pm-6:30 am

1 stop24h 35m

Brisbane

Fri 12/26

9:45 am-4:11 pm

1 stop22h 26m

$996

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Tue 8/12

6:00 am-7:20 am

2 stops34h 20m

Sydney Kingsford Smith

Thu 10/2

9:20 am-11:30 pm

2 stops29h 10m

$1,039

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 9/3

1:45 pm-7:20 am

2 stops26h 35m

Sydney Kingsford Smith

Wed 9/17

9:20 am-8:42 pm

2 stops26h 22m

$1,048

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 11/10

1:35 pm-8:45 am

2 stops27h 10m

Brisbane

Thu 11/13

10:45 am-3:29 pm

2 stops44h 44m

$1,062

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Wed 9/3

1:03 pm-7:05 am

2 stops27h 02m

Sydney Kingsford Smith

Wed 9/17

9:10 am-5:08 pm

2 stops22h 58m

$1,063

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Wed 12/10

11:51 am-7:45 am

2 stops27h 54m

Brisbane

Fri 12/26

10:45 am-9:28 am

2 stops38h 43m

$1,071

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Tue 8/12

6:05 pm-6:55 am

1 stop21h 50m

Sydney Kingsford Smith

Thu 10/2

9:30 am-9:45 pm

2 stops27h 15m

$1,074

Kansas CitySydney

MCI - SYD

MCISYD

Kansas City

Fri 9/5

5:45 am-6:35 am

2 stops33h 50m

Sydney Kingsford Smith

Sat 9/20

9:25 am-2:43 pm

1 stop20h 18m

$1,080

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 39 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, March is the cheapest month in which you can book a flight from Missouri to Australia (average of $1,039). Flying from Missouri to Australia in December is currently the most expensive (average of $1,636). 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 June 30, 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.

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 June 30, 2025.
Get a feel of what it's like to fly with Emirates, Alaska Airlines, and Fiji Airways from Missouri to Australia by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,285 reviews

Food

7.8

Entertainment

8.2

Overall

8.1

Boarding

8.1

Crew

8.3

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,285 reviews
Emirates
8.1
Very good
3,285 reviews

Food

7.8

Entertainment

8.2

Overall

8.1

Boarding

8.1

Crew

8.3

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Alaska Airlines
8.0
Very good
10,000 reviews
Emirates
8.1
Very good
3,285 reviews

Food

7.8

Entertainment

8.2

Overall

8.1

Boarding

8.1

Crew

8.3

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Fiji Airways
8.0
Very good
202 reviews
Emirates
8.1
Very good
3,285 reviews

Food

7.8

Entertainment

8.2

Overall

8.1

Boarding

8.1

Crew

8.3

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Delta
8.0
Very good
7,969 reviews
Emirates
8.1
Very good
3,285 reviews

Food

7.8

Entertainment

8.2

Overall

8.1

Boarding

8.1

Crew

8.3

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Air New Zealand
8.0
Very good
486 reviews
Emirates
8.1
Very good
3,285 reviews

Food

7.8

Entertainment

8.2

Overall

8.1

Boarding

8.1

Crew

8.3

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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 United Airlines ($569), Air Canada ($571), and Qantas Airways ($625).

  • 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, March is the cheapest month in which you can book a flight from Missouri to Australia (average of $1,039). Flying from Missouri to Australia in December is currently the most expensive (average of $1,636). 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 8 airlines flying from Missouri to Australia

Discover the top 8 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$687Average$1,784FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$822Average$1,544FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$912Average$1,281FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$1,132Average$1,287FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,173Average$1,751FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$1,193Average$1,586FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,211Average$1,438FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,449Average$1,715FlexibilityNo cancel feeOn-time68%

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