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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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Dec 9 — Dec 161
Tue 12/9
Tue 12/16
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 9, 2025.

Round-trip from

$134
(Kiwi.com)

One-way from

$28
(Kiwi.com)

Popular in

March

Cheapest in

November

Average price

$328
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. 9% potential increase in price ($39 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 9, 2025.

This CheapOair deal was found by Cheapflights users on 11/9. 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 stop10h 56mFrontier
Sun 12/77:00 amPHX - MCI
1 stop11h 50mFrontier
Deal found 11/9$138
This Frontier deal was found by Cheapflights users on 11/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/238:28 pmMCI - PHX
1 stop5h 04mFrontier
Thu 11/276:00 amPHX - MCI
Nonstop2h 31mFrontier
Deal found 11/8$140
This Frontier deal was found by Cheapflights users on 11/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/18:28 pmMCI - PHX
1 stop5h 04mFrontier
Sun 12/79:16 amPHX - MCI
1 stop9h 34mFrontier
Deal found 11/7$141
This Expedia deal was found by Cheapflights users on 11/7. 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 11/218:28 pmMCI - PHX
1 stop25h 36mFrontier
Tue 11/257:00 amPHX - MCI
1 stop11h 34mFrontier
Deal found 11/7$144
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Sun 12/218:45 pmMCI - PHX
1 stop28h 44mFrontier
Thu 12/257:20 amPHX - MCI
Nonstop2h 38mFrontier
Deal found 11/7$145
This Mytrip deal was found by Cheapflights users on 11/7. 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.
Fri 12/52:48 pmMCI - PHX
1 stop10h 56mFrontier
Fri 12/127:00 amPHX - MCI
1 stop5h 53mFrontier
Deal found 11/7$148
This CheapOair deal was found by Cheapflights users on 11/7. 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.
Tue 11/186:49 pmMCI - PHX
1 stop15h 42mFrontier
Sun 11/232:30 pmPHX - MCI
Nonstop2h 31mFrontier
Deal found 11/7$154
This CheapOair deal was found by Cheapflights users on 11/9. 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 12/48:09 pmMCI - PHX
1 stop5h 35mFrontier
Thu 12/119:16 amPHX - MCI
1 stop8h 58mFrontier
Deal found 11/9$160
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Tue 12/163:30 pmSTL - PHX
2 stops28h 01mFrontier
Mon 1/54:10 pmPHX - STL
Nonstop2h 57mFrontier
Deal found 11/8$160
This CheapOair deal was found by Cheapflights users on 11/7. 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 12/111:16 pmSTL - PHX
1 stop20h 32mFrontier
Mon 12/157:25 amPHX - STL
Nonstop2h 57mFrontier
Deal found 11/7$161
This Mytrip deal was found by Cheapflights users on 11/8. 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.
Fri 11/1412:09 pmSTL - PHX
Nonstop3h 22mFrontier
Mon 11/177:25 amPHX - STL
Nonstop2h 59mFrontier
Deal found 11/8$163
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 11/218:28 pmMCI - PHX
1 stop29h 04mFrontier
Sun 11/232:30 pmPHX - MCI
Nonstop2h 31mFrontier
Deal found 11/8$164

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 9, 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

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Wed 2/18

3:25 pm-9:05 pm

1 stop6h 40m

Phoenix Sky Harbor Intl

Tue 2/24

7:10 am-10:35 am

Nonstop2h 25m

$218

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 12/5

5:34 pm-12:04 am

1 stop7h 30m

Phoenix Sky Harbor Intl

Mon 12/8

12:59 am-9:10 am

1 stop7h 11m

$233

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

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 12/4

10:15 am-2:20 pm

1 stop5h 05m

Phoenix Sky Harbor Intl

Sat 12/6

6:20 pm-10:10 pm

Nonstop2h 50m

$239

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Sat 12/13

7:15 am-9:15 am

Nonstop3h 00m

Phoenix Sky Harbor Intl

Thu 12/18

10:30 am-2:00 pm

Nonstop2h 30m

$243

ColumbiaPhoenix

COU - PHX

COUPHX

Columbia Regional

Fri 12/12

9:00 am-3:26 pm

1 stop7h 26m

Phoenix Sky Harbor Intl

Tue 12/16

12:57 pm-8:29 pm

1 stop6h 32m

$248

ColumbiaPhoenix

COU - PHX

COUPHX

Columbia Regional

Tue 12/9

3:05 pm-10:57 pm

1 stop8h 52m

Phoenix Sky Harbor Intl

Tue 12/16

2:51 pm-8:29 pm

1 stop4h 38m

$248

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Sat 12/6

6:16 pm-10:40 pm

1 stop5h 24m

Phoenix Sky Harbor Intl

Sat 12/13

6:10 am-1:32 pm

1 stop6h 22m

$251

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 2/6

8:36 pm-11:07 pm

Nonstop3h 31m

Phoenix Sky Harbor Intl

Mon 2/9

9:23 am-4:49 pm

1 stop6h 26m

$251

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Sat 12/6

4:08 pm-12:16 am

1 stop9h 08m

Phoenix Sky Harbor Intl

Sat 12/13

6:00 am-3:23 pm

1 stop8h 23m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 55 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, October is the cheapest month in which you can book a flight from Missouri to Phoenix (average of $122). 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 9, 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 9, 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).

How much does it cost to fly round-trip from Missouri to Phoenix?

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?

    Southwest, Delta, and United Airlines can get you from Missouri to Phoenix in just under 6h 40m. Your travel time can differ by up to 50m. 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 ($48), Southwest ($70), and American Airlines ($126).

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

    Most travelers choose Lambert-St Louis - Phoenix Sky Harbor Intl, Kansas City - 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, (Lambert-St Louis - Phoenix Sky Harbor Intl), you can expect to pay $139 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, October is the cheapest month in which you can book a flight from Missouri to Phoenix (average of $122). 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 9, 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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