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$64+ 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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Mar 18 — Mar 251
Wed 3/18
Wed 3/25
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 February 16, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Wed 3/258:12 pm
STL
-
PHX
1 stop13h 30m
Frontier
Tue 3/316:45 pm
PHX
-
STL
1 stop13h 03m
Frontier
Deal found 2/12$149
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 4/111:06 pm
STL
-
PHX
Nonstop3h 35m
Frontier
Fri 4/179:24 pm
PHX
-
STL
1 stop19h 48m
Frontier
Deal found 2/15$150
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 4/252:51 pm
MCI
-
PHX
1 stop7h 19m
Frontier
Wed 4/296:45 pm
PHX
-
MCI
1 stop16h 45m
Frontier
Deal found 2/12$151
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Wed 2/254:39 pm
MCI
-
PHX
1 stop8h 20m
Frontier
Wed 3/46:00 am
PHX
-
MCI
1 stop8h 44m
Frontier
Deal found 2/12$153
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:51 pm
MCI
-
PHX
1 stop7h 19m
Frontier
Wed 5/66:45 pm
PHX
-
MCI
1 stop16h 45m
Frontier
Deal found 2/14$155
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/78:43 pm
MCI
-
PHX
1 stop23h 04m
Frontier
Fri 5/19:24 pm
PHX
-
MCI
1 stop14h 42m
Frontier
Deal found 2/14$156
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/202:15 pm
MCI
-
PHX
1 stop7h 55m
Frontier
Wed 4/2912:54 pm
PHX
-
MCI
1 stop22h 36m
Frontier
Deal found 2/14$161
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 4/188:12 pm
STL
-
PHX
1 stop13h 24m
Frontier
Tue 4/216:50 am
PHX
-
STL
2 stops22h 00m
Frontier
Deal found 2/15$162
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/272:15 pm
MCI
-
PHX
1 stop23h 31m
Frontier
Wed 4/2912:54 pm
PHX
-
MCI
1 stop22h 36m
Frontier
Deal found 2/14$163
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Fri 4/178:12 pm
STL
-
PHX
1 stop17h 34m
Frontier
Mon 4/206:50 am
PHX
-
STL
1 stop10h 22m
Frontier
Deal found 2/12$165
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:51 pm
MCI
-
PHX
1 stop7h 19m
Frontier
Sun 5/39:24 pm
PHX
-
MCI
1 stop14h 06m
Frontier
Deal found 2/14$166
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Mon 4/68:16 pm
STL
-
PHX
1 stop23h 31m
Frontier
Tue 4/146:50 am
PHX
-
STL
2 stops22h 00m
Frontier
Deal found 2/12$167

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 February 16, 2026.

Round-trip from

$149
(Kiwi.com)

One-way from

$64
(American Airlines)

Popular in

March

Cheapest in

November

Average price

$346
From Missouri to Phoenix
Search Deals
One-way flight from Missouri to Phoenix
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 16, 2026.
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

Sat 3/21

8:12 pm-7:42 am

1 stop13h 30m

Phoenix Sky Harbor Intl

Sat 4/4

6:07 pm-9:48 am

2 stops37h 41m

$260

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 4/4

8:16 pm-7:36 am

1 stop13h 20m

Phoenix Sky Harbor Intl

Fri 4/10

9:24 pm-9:48 am

1 stop10h 24m

$268

JoplinPhoenix

JLN - PHX

JLNPHX

Joplin

Tue 3/31

1:58 pm-4:54 pm

1 stop4h 56m

Phoenix Sky Harbor Intl

Tue 4/7

4:34 pm-11:44 pm

1 stop5h 10m

$274

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Fri 4/17

6:15 am-11:09 am

1 stop6h 54m

Phoenix Sky Harbor Intl

Sun 4/19

6:05 am-4:27 pm

1 stop8h 22m

$279

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Tue 3/3

5:32 pm-11:42 pm

1 stop7h 10m

Phoenix Sky Harbor Intl

Wed 3/11

6:00 am-3:10 pm

1 stop7h 10m

$280

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Wed 3/4

5:32 pm-11:42 pm

1 stop7h 10m

Phoenix Sky Harbor Intl

Wed 3/11

6:00 am-3:10 pm

1 stop7h 10m

$280

JoplinPhoenix

JLN - PHX

JLNPHX

Joplin

Fri 5/8

9:06 am-7:02 pm

2 stops11h 56m

Phoenix Sky Harbor Intl

Sat 5/9

3:30 pm-11:44 pm

1 stop6h 14m

$280

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Mon 3/2

5:32 pm-11:42 pm

1 stop7h 10m

Phoenix Sky Harbor Intl

Wed 3/11

6:00 am-3:10 pm

1 stop7h 10m

$280

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Tue 3/24

6:40 am-12:35 pm

1 stop7h 55m

Phoenix Sky Harbor Intl

Tue 3/31

7:05 am-2:54 pm

1 stop5h 49m

$291

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Fri 3/27

3:56 pm-10:49 pm

1 stop8h 53m

Phoenix Sky Harbor Intl

Mon 3/30

11:55 pm-11:08 am

1 stop9h 13m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

Showing 1-10 of 60 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, 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 September is currently the most expensive (average of $160). 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 February 16, 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 evening, which can drop the price by up to 16% 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 February 7, 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 February 16, 2026.

The most flights from USMO to PH1 are scheduled on a Monday (15 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 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, United Airlines, and Delta can get you from Missouri to Phoenix in just under 4h 56m. Your travel time can differ by up to 11h 15m. Airlines will cover a distance of 1017 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 ($40), Allegiant Air ($73), and Southwest ($107).

  • 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 American Airlines (86%), Alaska Airlines (86%) or Frontier (80%) 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 $936, our data shows the cheapest flight currently is $116. When looking at the most popular route, (Kansas City - Phoenix Sky Harbor Intl), you can expect to pay $185 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 September is currently the most expensive (average of $160). 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 February 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$81Average$199FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$121Average$200FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$138Average$206FlexibilityNo cancel feeOn-time88%
DeltaCheapest$138Average$311FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$148Average$385FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$197Average$431FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$199Average$386FlexibilityNo cancel feeOn-time63%

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