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$79+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
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 March 24, 2026.

This CheapOair deal was found by Cheapflights users on 3/24. 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 5/52:34 pm
MCI
-
PHX
1 stop10h 57m
Frontier
Mon 5/118:40 am
PHX
-
MCI
1 stop27h 09m
Frontier
Deal found 3/24$191
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 5/72:34 pm
MCI
-
PHX
1 stop10h 57m
Frontier
Tue 5/124:29 pm
PHX
-
MCI
1 stop19h 20m
Frontier
Deal found 3/23$198
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 5/162:34 pm
MCI
-
PHX
1 stop10h 57m
Frontier
Tue 5/196:53 pm
PHX
-
MCI
1 stop16h 56m
Frontier
Deal found 3/19$199
This Expedia deal was found by Cheapflights users on 3/23. 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.
Mon 4/68:43 pm
MCI
-
PHX
1 stop5h 14m
Frontier
Thu 4/98:41 am
PHX
-
MCI
1 stop9h 20m
Frontier
Deal found 3/23$200
This Frontier deal was found by Cheapflights users on 3/23. 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.
Fri 4/1711:19 am
MCI
-
PHX
1 stop12h 05m
Frontier
Sun 4/1910:29 pm
PHX
-
MCI
1 stop9h 59m
Frontier
Deal found 3/23$201
This Booking.com deal was found by Cheapflights users on 3/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/112:34 pm
MCI
-
PHX
1 stop10h 57m
Frontier
Tue 5/196:53 pm
PHX
-
MCI
1 stop16h 56m
Frontier
Deal found 3/22$202
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Wed 5/62:34 pm
MCI
-
PHX
1 stop10h 57m
Frontier
Mon 5/1111:30 pm
PHX
-
MCI
2 stops36h 19m
Frontier
Deal found 3/23$206
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Mon 4/2011:13 am
MCI
-
PHX
1 stop12h 11m
Frontier
Thu 4/2310:29 pm
PHX
-
MCI
1 stop10h 05m
Frontier
Deal found 3/21$207
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 4/1711:19 am
MCI
-
PHX
1 stop12h 05m
Frontier
Mon 4/206:50 am
PHX
-
MCI
1 stop4h 40m
Frontier
Deal found 3/23$208
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Wed 4/154:59 pm
STL
-
PHX
1 stop8h 04m
Frontier
Sat 4/188:00 am
PHX
-
STL
1 stop5h 21m
Frontier
Deal found 3/19$208
This Frontier deal was found by Cheapflights users on 3/20. 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.
Wed 5/136:51 pm
STL
-
PHX
1 stop6h 33m
Frontier
Mon 5/189:42 am
PHX
-
STL
1 stop8h 41m
Frontier
Deal found 3/20$210
This CheapOair deal was found by Cheapflights users on 3/20. 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 5/132:34 pm
MCI
-
PHX
1 stop10h 57m
Frontier
Tue 5/194:29 pm
PHX
-
MCI
1 stop19h 20m
Frontier
Deal found 3/20$211

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 March 24, 2026.

Round-trip from

$191
(CheapOair)

One-way from

$79
(Super.com)

Popular in

March

Cheapest in

November

Average price

$390
From Missouri to Phoenix
Search Deals
One-way flight from Missouri to Phoenix
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 24, 2026.
Use the filters below to find and compare flights from Missouri to Phoenix that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Wed 5/6

7:25 am-10:35 am

1 stop5h 10m

Phoenix Sky Harbor Intl

Tue 5/12

5:55 pm-10:25 pm

Nonstop2h 30m

$231

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 5/7

8:20 pm-9:10 pm

Nonstop2h 50m

Phoenix Sky Harbor Intl

Tue 5/12

7:05 am-2:10 pm

1 stop5h 05m

$282

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 5/7

4:17 pm-9:32 pm

1 stop7h 15m

Phoenix Sky Harbor Intl

Tue 5/12

1:50 pm-8:41 pm

1 stop4h 51m

$292

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 5/6

5:30 am-6:55 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

Sun 5/10

8:25 pm-1:15 am

Nonstop2h 50m

$326

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Thu 4/9

5:47 pm-9:46 pm

1 stop5h 59m

Phoenix Sky Harbor Intl

Mon 4/13

11:59 pm-9:51 am

1 stop7h 52m

$334

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Tue 6/2

4:40 pm-5:35 pm

Nonstop2h 55m

Phoenix Sky Harbor Intl

Tue 6/9

6:35 pm-11:10 pm

Nonstop2h 35m

$339

ColumbiaPhoenix

COU - PHX

COUPHX

Columbia Regional

Fri 4/10

7:43 pm-11:33 pm

1 stop5h 50m

Phoenix Sky Harbor Intl

Mon 4/13

11:59 pm-9:46 am

1 stop7h 47m

$343

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Mon 5/4

5:35 pm-6:30 pm

Nonstop2h 55m

Phoenix Sky Harbor Intl

Fri 5/8

3:35 pm-10:05 pm

1 stop4h 30m

$362

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Fri 4/3

1:33 pm-6:45 pm

1 stop7h 12m

Phoenix Sky Harbor Intl

Sat 4/4

6:05 am-2:17 pm

1 stop6h 12m

$369
Quickest round-trip

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 4/23

8:20 pm-9:10 pm

Nonstop2h 50m

Phoenix Sky Harbor Intl

Mon 4/27

8:25 pm-12:50 am

Nonstop2h 25m

$369

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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, February is the cheapest month in which you can book a flight from Missouri to Phoenix (average of $97). Flying from Missouri to Phoenix in May is currently the most expensive (average of $162). 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 March 24, 2026.

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 afternoon, which can drop the price by up to 14% versus a flight in the morning.

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 March 23, 2026.

Travelers seeking maximum savings on their Missouri to Phoenix flight should consider departing on Saturday at noon when fares are most often at their lowest. Tuesday mornings 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 March 24, 2026.

The most flights from USMO to PH1 are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, 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, United Airlines, and American Airlines can get you from Missouri to Phoenix in just under 5h 10m. Your travel time can differ by up to 2h 05m. 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 ($47), Allegiant Air ($73), and Southwest ($105).

  • 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 American Airlines (86%), Alaska Airlines (86%) or Southwest (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 $342, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl), you can expect to pay $209 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, February is the cheapest month in which you can book a flight from Missouri to Phoenix (average of $97). Flying from Missouri to Phoenix in May is currently the most expensive (average of $162). 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

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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 March 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$218FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$300FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$121Average$200FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$137Average$208FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$148Average$375FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$195Average$434FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$198Average$384FlexibilityNo cancel feeOn-time63%

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