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$58+ 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
3月 21 — 3月 281
週六 3/21
週六 3/28
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 2月 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
週一 3/98:38 pm
MCI
-
PHX
1 stop17h 16m
Frontier
週一 3/168:50 am
PHX
-
MCI
Nonstop2h 34m
Frontier
Deal found 2/16$148
This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
週一 3/238:12 pm
STL
-
PHX
1 stop17h 42m
Frontier
週二 4/76:52 pm
PHX
-
STL
1 stop12h 56m
Frontier
Deal found 2/18$150
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
週二 4/78:43 pm
MCI
-
PHX
1 stop17h 02m
Frontier
週六 4/186:50 am
PHX
-
MCI
1 stop5h 16m
Frontier
Deal found 2/16$151
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
週二 4/78:43 pm
MCI
-
PHX
1 stop17h 02m
Frontier
週五 4/179:24 pm
PHX
-
MCI
1 stop14h 42m
Frontier
Deal found 2/16$156
This Super.com deal was found by Cheapflights users on 2/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週日 3/14:49 pm
MCI
-
PHX
Nonstop3h 16m
Frontier
週四 3/52:27 pm
PHX
-
MCI
Nonstop2h 32m
Frontier
Deal found 2/18$157
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
週一 4/68:43 pm
MCI
-
PHX
1 stop23h 04m
Frontier
週六 4/186:50 am
PHX
-
MCI
1 stop5h 16m
Frontier
Deal found 2/16$160
This Super.com deal was found by Cheapflights users on 2/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週六 4/41:06 pm
STL
-
PHX
Nonstop3h 35m
Frontier
週六 4/117:25 am
PHX
-
STL
Nonstop2h 56m
Frontier
Deal found 2/18$160
This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
週四 4/162:15 pm
MCI
-
PHX
1 stop19h 21m
Frontier
週六 4/186:50 am
PHX
-
MCI
1 stop5h 16m
Frontier
Deal found 2/18$162
This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
週六 4/182:51 pm
MCI
-
PHX
1 stop7h 19m
Frontier
週四 4/2310:30 pm
PHX
-
MCI
1 stop10h 04m
Frontier
Deal found 2/18$163
This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
週一 3/238:38 pm
MCI
-
PHX
1 stop23h 08m
Frontier
週四 3/265:30 am
PHX
-
MCI
Nonstop2h 32m
Frontier
Deal found 2/18$165
This Super.com deal was found by Cheapflights users on 2/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週四 3/56:54 pm
MCI
-
PHX
Nonstop3h 15m
Frontier
週五 3/69:48 am
PHX
-
MCI
Nonstop2h 36m
Frontier
Deal found 2/19$166
This Kiwi.com deal was found by Cheapflights users on 2/17. 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.
週日 3/810:47 pm
STL
-
PHX
Nonstop3h 41m
Frontier
週四 3/125:09 pm
PHX
-
STL
Nonstop2h 53m
Frontier
Deal found 2/17$166

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 2月 19, 2026.

Round-trip from

$148
(Kiwi.com)

One-way from

$58
(Kiwi.com)

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 ($27 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 2月 19, 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

週日 3/22

10:47 pm-12:28 am

Nonstop3h 41m

Phoenix Sky Harbor Intl

週四 3/26

5:09 pm-10:02 pm

Nonstop2h 53m

$193

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

週六 4/4

5:39 pm-11:46 pm

1 stop8h 07m

Phoenix Sky Harbor Intl

週六 4/11

7:05 am-2:54 pm

1 stop5h 49m

$197

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

週六 4/4

1:54 pm-4:54 pm

1 stop5h 00m

Phoenix Sky Harbor Intl

週六 4/11

6:05 am-2:19 pm

1 stop6h 14m

$215

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

週四 3/19

10:47 pm-12:28 am

Nonstop3h 41m

Phoenix Sky Harbor Intl

週三 3/25

3:11 pm-10:31 am

2 stops17h 20m

$219

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

週六 4/4

2:23 pm-3:22 pm

Nonstop2h 59m

Phoenix Sky Harbor Intl

週六 4/11

6:35 am-1:43 pm

1 stop5h 08m

$223

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

週四 3/12

10:47 pm-12:28 am

Nonstop3h 41m

Phoenix Sky Harbor Intl

週日 3/15

5:09 pm-10:02 pm

Nonstop2h 53m

$234

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

週三 3/18

8:11 pm-11:39 pm

1 stop5h 28m

Phoenix Sky Harbor Intl

週三 3/25

6:05 am-3:04 pm

1 stop6h 59m

$239

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

週一 3/23

8:12 pm-11:58 pm

1 stop5h 46m

Phoenix Sky Harbor Intl

週五 3/27

9:24 pm-9:49 am

1 stop10h 25m

$244

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

週六 4/4

8:16 pm-12:51 pm

2 stops18h 35m

Phoenix Sky Harbor Intl

週六 4/11

7:25 am-12:21 pm

Nonstop2h 56m

$250

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

週四 3/26

8:40 pm-11:51 pm

1 stop5h 11m

Phoenix Sky Harbor Intl

週日 3/29

5:30 am-10:02 am

Nonstop2h 32m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

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 2月 19, 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 15% 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 17, 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 2月 19, 2026.

The most flights from USMO to PH1 are scheduled on a Thursday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 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 3h 41m. Your travel time can differ by up to 4h 26m. Airlines will cover a distance of 1258 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 Columbia Regional - 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 Volaris (100%), Frontier (80%) or American Airlines (77%) 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 $892, 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 $189 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 2月 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$202FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$311FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$121Average$200FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$138Average$207FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$148Average$385FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$197Average$430FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$199Average$386FlexibilityNo cancel feeOn-time63%

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