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$65+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
May 21 — May 281
Thu 5/21
Thu 5/28
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 April 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/18. 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 6/16:24 pm
MCI
-
PHX
2 stops22h 59m
Frontier
Sat 6/65:15 am
PHX
-
MCI
1 stop6h 34m
Frontier
Deal found 4/18$229
This CheapOair deal was found by Cheapflights users on 4/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/292:34 pm
MCI
-
PHX
1 stop10h 55m
Frontier
Mon 6/14:17 pm
PHX
-
MCI
1 stop19h 32m
Frontier
Deal found 4/19$231
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:45 am
MCI
-
PHX
Nonstop2h 55m
Southwest
Wed 6/32:35 pm
PHX
-
MCI
1 stop6h 00m
Southwest
Deal found 4/20$232
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:00 am
MCI
-
PHX
Nonstop2h 55m
Southwest
Tue 5/191:00 pm
PHX
-
MCI
Nonstop2h 30m
Southwest
Deal found 4/20$233
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 6/12:34 pm
MCI
-
PHX
1 stop8h 36m
Frontier
Mon 6/86:51 pm
PHX
-
MCI
1 stop16h 09m
Frontier
Deal found 4/18$234
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 6/16:24 pm
MCI
-
PHX
2 stops28h 56m
Frontier
Fri 6/56:51 pm
PHX
-
MCI
1 stop16h 58m
Frontier
Deal found 4/17$235
This CheapOair deal was found by Cheapflights users on 4/17. 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 55m
Frontier
Wed 5/2011:00 am
PHX
-
MCI
1 stop24h 49m
Frontier
Deal found 4/17$236
This United Airlines deal was found by Cheapflights users on 4/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:40 am
SGF
-
PHX
1 stop6h 53m
United Airlines
Tue 8/188:30 am
PHX
-
SGF
1 stop5h 51m
United Airlines
Deal found 4/19$237
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/82:34 pm
MCI
-
PHX
1 stop10h 55m
Frontier
Sun 5/1011:26 am
PHX
-
MCI
2 stops48h 23m
Frontier
Deal found 4/17$237
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 stop19h 10m
Frontier
Tue 5/266:51 pm
PHX
-
MCI
1 stop16h 58m
Frontier
Deal found 4/19$238
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/302:15 pm
MCI
-
PHX
1 stop5h 32m
Frontier
Sun 5/36:50 am
PHX
-
MCI
1 stop4h 40m
Frontier
Deal found 4/20$239
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
Sat 5/162:34 pm
MCI
-
PHX
1 stop10h 55m
Frontier
Wed 5/206:51 pm
PHX
-
MCI
1 stop16h 58m
Frontier
Deal found 4/21$240

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 April 21, 2026.

Round-trip from

$229
(Kiwi.com)

One-way from

$65
(Kiwi.com)

Popular in

April

Cheapest in

November

Average price

$394
From Missouri to Phoenix
Search Deals
One-way flight from Missouri to Phoenix
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($34 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 April 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 April 21, 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

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 5/21

8:08 pm-7:44 am

1 stop13h 36m

Phoenix Sky Harbor Intl

Thu 5/28

8:40 am-7:23 pm

1 stop8h 43m

$283

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Fri 5/29

7:39 pm-12:14 am

1 stop6h 35m

Phoenix Sky Harbor Intl

Sun 5/31

12:35 am-10:30 am

1 stop7h 55m

$300

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Tue 5/5

8:50 am-2:53 pm

1 stop8h 03m

Phoenix Sky Harbor Intl

Tue 5/12

12:48 pm-10:02 pm

1 stop7h 14m

$337

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Fri 5/15

4:50 pm-9:05 pm

1 stop6h 15m

Phoenix Sky Harbor Intl

Tue 5/19

12:48 pm-10:02 pm

1 stop7h 14m

$346

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 5/7

6:20 am-7:15 am

Nonstop2h 55m

Phoenix Sky Harbor Intl

Tue 5/12

5:55 pm-10:25 pm

Nonstop2h 30m

$347

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Fri 5/8

6:20 am-7:15 am

Nonstop2h 55m

Phoenix Sky Harbor Intl

Tue 5/12

4:25 pm-8:50 pm

Nonstop2h 25m

$347

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 5/27

5:35 am-9:20 am

1 stop5h 45m

Phoenix Sky Harbor Intl

Thu 6/18

3:50 pm-11:55 pm

2 stops6h 05m

$351

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 5/19

8:45 pm-10:10 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Thu 5/21

5:00 am-12:50 pm

1 stop5h 50m

$360

ColumbiaPhoenix

COU - PHX

COUPHX

Columbia Regional

Tue 8/25

11:30 am-10:51 pm

2 stops13h 21m

Phoenix Sky Harbor Intl

Sat 8/29

11:15 am-8:30 pm

1 stop7h 15m

$366

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 5/21

9:40 pm-11:05 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Thu 5/28

7:40 pm-12:30 am

Nonstop2h 50m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/19

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, December is the cheapest month in which you can book a flight from Missouri to Phoenix (average of $40). Flying from Missouri to Phoenix in January is currently the most expensive (average of $762). 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 April 21, 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 13% 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 April 18, 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 April 21, 2026.

The most flights from USMO to PH1 are scheduled on a Monday (11 on average). You will have fewer flight options on Sunday, 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?

    Frontier, American Airlines, and United Airlines can get you from Missouri to Phoenix in just under 6h 35m. Your travel time can differ by up to 7h 01m. Airlines will cover a distance of 1079 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), Allegiant Air ($73), and American Airlines ($104).

  • 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 Envoy Air (100%), American Airlines (90%) or Alaska Airlines (89%) 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 $404, our data shows the cheapest flight currently is $170. When looking at the most popular route, (Kansas City - Phoenix Sky Harbor Intl), you can expect to pay $213 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 $40). Flying from Missouri to Phoenix in January is currently the most expensive (average of $762). 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 April 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$219FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$121Average$199FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$134Average$210FlexibilityNo cancel feeOn-time88%
DeltaCheapest$138Average$300FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$148Average$393FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$195Average$426FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$387FlexibilityNo cancel feeOn-time63%

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