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$38+ Cheap flights from Missouri to Phoenix

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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Jan 12 — Jan 191
Mon 1/12
Mon 1/19
1 adult, Economy
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Cheap flight deals from Missouri to Phoenix

Cheapest flights from Missouri to Phoenix
Explore the most affordable flight options available from Missouri to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 13, 2025.

This Travelocity deal was found by Cheapflights users on 12/12. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:53 amMCI - PHX
Nonstop3h 02mFrontier
Fri 12/2610:31 pmPHX - MCI
1 stop20h 20mFrontier
Deal found 12/12$121
This Super.com deal was found by Cheapflights users on 12/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1811:53 amMCI - PHX
Nonstop3h 02mFrontier
Thu 12/257:20 amPHX - MCI
Nonstop2h 38mFrontier
Deal found 12/11$131
This CheapOair deal was found by Cheapflights users on 12/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:45 pmMCI - PHX
1 stop12h 36mFrontier
Thu 1/17:20 amPHX - MCI
Nonstop2h 38mFrontier
Deal found 12/13$142
This Travelocity deal was found by Cheapflights users on 12/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:53 amMCI - PHX
Nonstop3h 02mFrontier
Mon 1/59:31 amPHX - MCI
1 stop9h 19mFrontier
Deal found 12/11$151
This Super.com deal was found by Cheapflights users on 12/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:53 amMCI - PHX
Nonstop3h 02mFrontier
Sun 12/2811:59 amPHX - MCI
Nonstop2h 38mFrontier
Deal found 12/11$157
This CheapOair deal was found by Cheapflights users on 12/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:53 amMCI - PHX
Nonstop3h 02mFrontier
Thu 1/110:31 pmPHX - MCI
1 stop20h 19mFrontier
Deal found 12/11$162
This deal was found by Cheapflights users on 12/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:42 pmSTL - PHX
Nonstop3h 31mFrontier
Mon 1/194:15 pmPHX - STL
Nonstop2h 53mFrontier
Deal found 12/10$164
This Expedia deal was found by Cheapflights users on 12/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:45 pmMCI - PHX
1 stop12h 36mFrontier
Wed 12/317:00 amPHX - MCI
1 stop11h 50mFrontier
Deal found 12/12$173
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Thu 12/2511:53 amMCI - PHX
Nonstop3h 02mMultiple Airlines
Mon 1/512:58 pmPHX - MCI
2 stops48h 54mMultiple Airlines
Deal found 12/11$176
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Fri 12/1212:07 pmSTL - PHX
Nonstop3h 31mFrontier
Fri 1/164:15 pmPHX - STL
Nonstop2h 53mFrontier
Deal found 12/11$177
This CheapOair deal was found by Cheapflights users on 12/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:53 amMCI - PHX
Nonstop3h 02mFrontier
Mon 12/2910:31 pmPHX - MCI
1 stop20h 19mFrontier
Deal found 12/12$182
This Priceline deal was found by Cheapflights users on 12/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:53 amMCI - PHX
Nonstop3h 02mFrontier
Tue 12/309:31 amPHX - MCI
1 stop9h 19mFrontier
Deal found 12/11$187

Find flight deals from Missouri to Phoenix

Keep the following information in mind while searching for Missouri to Phoenix flight deals. Data was last updated December 13, 2025.

Round-trip from

$112
(Super.com)

One-way from

$38
(Kiwi.com)

Popular in

March

Cheapest in

November

Average price

$317
From Missouri to Phoenix
Search Deals
One-way flight from Missouri to Phoenix
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Phoenix 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 December 13, 2025.
Use the filters below to find and compare flights from Missouri to Phoenix that are best for you.

Fly from

Missouri

Fly to

Phoenix

Route

Depart

Return

Price

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 1/16

7:27 pm-12:57 pm

1 stop18h 30m

Phoenix Sky Harbor Intl

Mon 1/19

6:21 pm-11:33 pm

2 stops28h 12m

$237

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Sat 1/31

1:00 pm-7:13 pm

1 stop7h 13m

Phoenix Sky Harbor Intl

Tue 2/3

6:00 am-4:15 pm

1 stop9h 15m

$251

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 12/23

10:10 pm-9:16 pm

1 stop24h 06m

Phoenix Sky Harbor Intl

Mon 12/29

10:26 pm-9:25 pm

1 stop21h 59m

$254

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Fri 1/30

5:00 pm-11:44 pm

1 stop7h 44m

Phoenix Sky Harbor Intl

Tue 2/3

6:00 am-4:15 pm

1 stop9h 15m

$265

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Fri 1/30

5:00 pm-11:44 pm

1 stop7h 44m

Phoenix Sky Harbor Intl

Mon 2/2

1:55 pm-9:46 pm

1 stop6h 51m

$279

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 1/22

7:00 am-1:50 pm

1 stop7h 50m

Phoenix Sky Harbor Intl

Mon 1/26

12:05 pm-11:23 pm

1 stop10h 18m

$285

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 1/20

4:35 pm-10:14 pm

1 stop6h 39m

Phoenix Sky Harbor Intl

Tue 1/27

6:45 am-1:16 pm

1 stop5h 31m

$297

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 2/21

5:25 pm-7:55 pm

Nonstop3h 30m

Phoenix Sky Harbor Intl

Tue 2/24

6:30 pm-10:20 pm

Nonstop2h 50m

$297

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 1/29

12:55 pm-6:35 pm

1 stop6h 40m

Phoenix Sky Harbor Intl

Sat 2/14

2:05 pm-5:30 pm

Nonstop2h 25m

$309

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 1/20

2:50 pm-11:59 pm

1 stop10h 09m

Phoenix Sky Harbor Intl

Fri 1/30

11:00 am-10:46 pm

1 stop10h 46m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 59 results
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Best time to book a flight from Missouri to Phoenix

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

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

Currently, December is the cheapest month in which you can book a flight from Missouri to Phoenix (average of $99). Flying from Missouri to Phoenix in March is currently the most expensive (average of $182). 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 PHX?

Find hourly flight availability from Missouri to Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 13, 2025.

When flying from Missouri to Phoenix, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 44% versus a flight at noon.

What is the cheapest day to fly from Missouri to Phoenix?

Use this chart to determine the cheapest time to fly round-trip from Missouri to Phoenix. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Missouri to Phoenix flight should consider departing on Friday evenings when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Missouri to Phoenix

Explore weekly flight availability from Missouri to Phoenix. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 13, 2025.

The most flights from USMO to PH1 are scheduled on a Friday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Related info for your journey

Find useful and relevant information for your journey from Missouri to Phoenix. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Missouri to Phoenix?

    Frontier, Delta, and United Airlines can get you from Missouri to Phoenix in just under 6h 39m. Your travel time can differ by up to 11h 51m. Airlines will cover a distance of 1258 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 Phoenix one-way?

    The cheapest airlines for a one-way flight from Missouri to Phoenix are Frontier ($54), Allegiant Air ($73), and Spirit Airlines ($84).

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

    Most travelers choose Kansas City - Phoenix Sky Harbor Intl, Lambert-St Louis - Phoenix Sky Harbor Intl or Springfield-Branson - Phoenix Sky Harbor Intl when deciding on the best route from Missouri to Phoenix.

  • What are the most reliable airlines from Missouri to Phoenix?

    No one likes to see their flight delayed. When booking a flight from Missouri to Phoenix consider choosing Frontier (86%), American Airlines (70%) or Alaska Airlines (70%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Missouri to Phoenix?

    While on average a flight from Missouri to Phoenix is generally $415, our data shows the cheapest flight currently is $67. When looking at the most popular route, (Kansas City - Phoenix Sky Harbor Intl), you can expect to pay $132 for that flight.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Missouri to Phoenix (average of $99). Flying from Missouri to Phoenix in March is currently the most expensive (average of $182). 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 7 airlines flying from Missouri to Phoenix

Discover the top 7 airlines that operate flights from Missouri to Phoenix. 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 December 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$91Average$244FlexibilityNo cancel feeOn-time65%
FrontierCheapest$94Average$200FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$140Average$196FlexibilityNo cancel feeOn-time88%
DeltaCheapest$168Average$342FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$207Average$391FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$210Average$438FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$213Average$426FlexibilityNo cancel feeOn-time71%

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