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$990+ Cheap flights from Missouri to Perth (PER)

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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PER
Dec 14 — Dec 211
Sun 12/14
Sun 12/21
1 adult, Economy
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Find flight deals from Missouri to Perth

Cheapest flights from Missouri to Perth
Explore the most affordable flight options available from Missouri to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 14, 2025.

This Qantas Airways deal was found by Cheapflights users on 11/12. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:00 amSTL - PER
2 stops45h 15mQantas Airways
Mon 11/175:45 pmPER - STL
2 stops36h 42mQantas Airways
Deal found 11/12$1,970
This Cathay Pacific deal was found by Cheapflights users on 11/12. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:00 amSTL - PER
2 stops33h 55mCathay Pacific
Sun 11/1612:25 amPER - STL
2 stops36h 33mCathay Pacific
Deal found 11/12$2,012
This oojo deal was found by Cheapflights users on 11/12. 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 12/286:20 amSTL - PER
2 stops44h 25mQantas Airways
Sun 1/410:40 pmPER - STL
2 stops39h 11mQantas Airways
Deal found 11/12$3,179
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2811:51 amSTL - PER
3 stops34h 34mMultiple Airlines
Sun 1/410:55 pmPER - STL
3 stops31h 28mMultiple Airlines
Deal found 11/12$3,340

Cheap flight deals from Missouri to Perth

Keep the following information in mind while searching for Missouri to Perth flight deals. Data was last updated November 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,369
(oojo)

One-way from

$990
(United Airlines)
Provider with most accurate pricing for Lambert-St Louis-Perth flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Perth flights.
Search Deals
From Missouri to Perth
Search Deals
One-way flight from Missouri to Perth
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Perth 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 November 14, 2025.
Use the filters below to find and compare flights from Missouri to Perth that are best for you.

Fly from

Missouri

Fly to

Perth

Route

Depart

Return

Price

Kansas CityPerth

MCI - PER

MCIPER

Kansas City

Mon 3/16

2:49 pm-11:55 pm

2 stops44h 06m

Perth

Mon 3/23

6:40 am-11:41 pm

2 stops54h 01m

$1,586

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 2/26

7:00 am-6:45 pm

2 stops45h 45m

Perth

Fri 3/27

10:45 pm-11:55 pm

2 stops38h 10m

$1,591

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 2/24

7:00 am-11:55 am

2 stops38h 55m

Perth

Thu 3/26

10:45 pm-11:55 pm

2 stops38h 10m

$1,591

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sun 2/22

7:00 am-12:20 pm

2 stops39h 20m

Perth

Tue 3/24

4:35 pm-11:55 pm

2 stops44h 20m

$1,591

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Tue 2/24

7:00 am-11:55 am

2 stops38h 55m

Perth

Fri 3/27

10:45 pm-11:55 pm

2 stops38h 10m

$1,591

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Wed 2/25

7:00 am-6:45 pm

2 stops45h 45m

Perth

Fri 3/27

10:45 pm-11:55 pm

2 stops38h 10m

$1,591

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 2/26

7:00 am-11:55 am

2 stops38h 55m

Perth

Thu 3/26

10:45 pm-11:55 pm

2 stops38h 10m

$1,591

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sun 2/22

7:00 am-6:45 pm

2 stops45h 45m

Perth

Fri 3/27

10:45 pm-11:55 pm

2 stops38h 10m

$1,591

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Fri 2/27

7:00 am-6:45 pm

2 stops45h 45m

Perth

Thu 3/26

10:45 pm-11:55 pm

2 stops38h 10m

$1,631

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 2/23

10:03 am-6:55 am

2 stops30h 52m

Perth

Sun 3/22

12:25 am-10:24 pm

2 stops34h 59m

$1,645

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 31 results
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Best time to book a flight from Missouri to Perth

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

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

Find hourly flight availability from Missouri to Perth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 14, 2025.

It’s typically best to fly out from Missouri to Perth in the morning. Doing so could potentially save you 34% on the flight price compared to flying in the evening, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Perth. 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 Perth from Missouri?

    For a flight from Missouri to Perth, you will be flying into Perth. Perth (PER) is just 6.3 mi from the center of the city.

  • How long is the flight from Missouri to Perth?

    For as low as $2,093, Qatar Airways can have you in Perth from Missouri in 37h 50m. The distance between Missouri and Perth is about 10642 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $990. However, be on the lookout for offers from Qantas Airways and Cathay Pacific, as they are both options that can get you from Missouri to Perth for a low price.

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

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

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

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

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

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

See more FAQs

Traveling to a place near Perth?

Book flights to Perth if you plan to visit one of these locations
Fremantle
Rottnest Island
Scarborough

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