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$28+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Dec 15 — Dec 221
Mon 12/15
Mon 12/22
1 adult, Economy
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Cheap flight deals from Missouri to Phoenix

Keep the following information in mind while searching for Missouri to Phoenix flight deals. Data was last updated November 15, 2025.

Round-trip from

$129
(Priceline)

One-way from

$28
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$321
From Missouri to Phoenix
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One-way flight from Missouri to Phoenix
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Highest demand for flights based on searches. 10% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 15, 2025.

This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1411:58 amMCI - PHX
Nonstop3h 02mFrontier
Sun 12/219:31 amPHX - MCI
1 stop9h 20mFrontier
Deal found 11/12$129
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.
Thu 12/118:09 pmMCI - PHX
1 stop5h 35mFrontier
Sun 12/1410:26 pmPHX - MCI
1 stop20h 24mFrontier
Deal found 11/12$130
This CheapOair deal was found by Cheapflights users on 11/13. 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.
Sun 12/214:32 pmMCI - PHX
Nonstop3h 02mFrontier
Thu 12/257:20 amPHX - MCI
Nonstop2h 38mFrontier
Deal found 11/13$131
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:48 pmMCI - PHX
1 stop18h 18mFrontier
Sun 12/1410:26 pmPHX - MCI
1 stop20h 24mFrontier
Deal found 11/12$138
This Southwest deal was found by Cheapflights users on 11/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:05 pmMCI - PHX
Nonstop2h 55mSouthwest
Wed 12/244:25 pmPHX - MCI
Nonstop2h 30mSouthwest
Deal found 11/13$139
This Expedia deal was found by Cheapflights users on 11/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:43 pmSTL - PHX
1 stop6h 01mFrontier
Sun 1/410:31 pmPHX - STL
1 stop10h 31mFrontier
Deal found 11/13$141
This CheapOair deal was found by Cheapflights users on 11/14. 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.
Fri 12/52:48 pmMCI - PHX
1 stop18h 18mFrontier
Thu 12/119:16 amPHX - MCI
1 stop8h 58mFrontier
Deal found 11/14$142
This CheapOair deal was found by Cheapflights users on 11/14. 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.
Fri 11/283:53 pmSTL - PHX
Nonstop3h 33mFrontier
Fri 12/510:26 pmPHX - STL
1 stop10h 48mFrontier
Deal found 11/14$143
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:45 pmMCI - PHX
1 stop4h 44mFrontier
Fri 12/267:00 amPHX - MCI
1 stop11h 50mFrontier
Deal found 11/12$144
This CheapOair deal was found by Cheapflights users on 11/13. 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.
Fri 12/197:43 pmSTL - PHX
1 stop19h 50mFrontier
Sat 12/277:00 amPHX - STL
1 stop13h 25mFrontier
Deal found 11/13$144
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/227:43 pmSTL - PHX
1 stop14h 12mFrontier
Sun 11/2310:43 pmPHX - STL
1 stop21h 26mFrontier
Deal found 11/12$145
This Super.com 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 Super.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 12/193:50 pmPHX - STL
Nonstop2h 57mFrontier
Deal found 11/12$147

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 November 15, 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

Wed 2/11

7:43 pm-8:06 am

1 stop13h 23m

Phoenix Sky Harbor Intl

Sun 2/15

3:44 pm-7:41 pm

Nonstop2h 57m

$217

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 12/4

6:22 pm-12:46 am

1 stop7h 24m

Phoenix Sky Harbor Intl

Wed 12/10

12:59 am-10:00 am

1 stop8h 01m

$239

ColumbiaPhoenix

COU - PHX

COUPHX

Columbia Regional

Tue 4/14

8:00 am-2:53 pm

1 stop8h 53m

Phoenix Sky Harbor Intl

Tue 4/21

12:36 pm-9:10 pm

1 stop6h 34m

$248

JoplinPhoenix

JLN - PHX

JLNPHX

Joplin

Fri 2/27

6:19 pm-10:50 pm

1 stop5h 31m

Phoenix Sky Harbor Intl

Fri 3/6

5:30 pm-11:36 pm

1 stop5h 06m

$254

ColumbiaPhoenix

COU - PHX

COUPHX

Columbia Regional

Sat 2/21

9:00 am-1:39 pm

1 stop5h 39m

Phoenix Sky Harbor Intl

Sat 2/28

8:30 am-9:33 pm

2 stops12h 03m

$254

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Fri 1/9

5:03 pm-9:54 pm

1 stop5h 51m

Phoenix Sky Harbor Intl

Sun 1/11

9:30 am-4:27 pm

1 stop5h 57m

$259

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 1/21

5:00 pm-11:08 am

2 stops19h 08m

Phoenix Sky Harbor Intl

Tue 1/27

6:20 am-9:38 pm

2 stops14h 18m

$274

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 2/10

7:00 am-5:35 pm

2 stops11h 35m

Phoenix Sky Harbor Intl

Sat 2/21

6:05 am-8:45 pm

2 stops13h 40m

$274

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 1/21

3:31 pm-11:08 am

2 stops20h 37m

Phoenix Sky Harbor Intl

Mon 1/26

6:20 am-9:38 pm

2 stops14h 18m

$274

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Tue 2/3

10:00 am-12:00 pm

Nonstop3h 00m

Phoenix Sky Harbor Intl

Fri 2/6

2:15 pm-5:40 pm

Nonstop2h 25m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 53 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 $101). Flying from Missouri to Phoenix in March is currently the most expensive (average of $187). 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 November 15, 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. Saturday afternoons 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 November 15, 2025.

The most flights from USMO to PH1 are scheduled on a Friday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 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 7h 24m. Your travel time can differ by up to 5h 59m. Airlines will cover a distance of 1040 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 ($55), Southwest ($70), and United Airlines ($109).

  • 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 SkyWest Airlines (100%), Alaska Airlines (83%) or American Airlines (82%) 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 $409, our data shows the cheapest flight currently is $69. When looking at the most popular route, (Kansas City - Phoenix Sky Harbor Intl), you can expect to pay $107 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 $101). Flying from Missouri to Phoenix in March is currently the most expensive (average of $187). 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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Alternative routes for Missouri to Phoenix

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$205FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$139Average$232FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$140Average$236FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$216Average$397FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$223Average$438FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$224Average$428FlexibilityNo cancel feeOn-time71%
DeltaCheapest$234Average$342FlexibilityNo cancel feeOn-timeN/A

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