HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Phoenix

$63+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Mar 28 — Apr 41
Sat 3/28
Sat 4/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Missouri to Phoenix with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 26, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/24. 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 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 2/24$157
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/278:12 pm
STL
-
PHX
1 stop13h 30m
Frontier
Sat 4/47:25 am
PHX
-
STL
Nonstop2h 56m
Frontier
Deal found 2/23$158
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 5/88:12 pm
STL
-
PHX
1 stop14h 26m
Frontier
Sun 5/109:24 pm
PHX
-
STL
1 stop19h 48m
Frontier
Deal found 2/23$159
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2412:14 pm
STL
-
PHX
1 stop10h 04m
Frontier
Tue 3/316:45 pm
PHX
-
STL
1 stop13h 03m
Frontier
Deal found 2/22$160
This Super.com deal was found by Cheapflights users on 2/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/24:43 pm
MCI
-
PHX
Nonstop3h 09m
Frontier
Thu 4/912:30 pm
PHX
-
MCI
Nonstop2h 37m
Frontier
Deal found 2/22$161
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/238:38 pm
MCI
-
PHX
1 stop19h 23m
Frontier
Thu 3/265:30 am
PHX
-
MCI
Nonstop2h 32m
Frontier
Deal found 2/22$162
This Kiwi.com deal was found by Cheapflights users on 2/23. 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.
Sat 4/48:16 pm
STL
-
PHX
1 stop16h 33m
Frontier
Sat 4/117:25 am
PHX
-
STL
Nonstop2h 56m
Frontier
Deal found 2/23$162
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:55 pm
STL
-
PHX
1 stop8h 23m
Frontier
Sat 5/99:52 am
PHX
-
STL
1 stop7h 20m
Frontier
Deal found 2/24$163
This Super.com deal was found by Cheapflights users on 2/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:54 pm
MCI
-
PHX
Nonstop3h 15m
Frontier
Fri 3/69:48 am
PHX
-
MCI
Nonstop2h 36m
Frontier
Deal found 2/22$166
This Super.com deal was found by Cheapflights users on 2/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1910:47 pm
STL
-
PHX
Nonstop3h 41m
Frontier
Thu 3/265:09 pm
PHX
-
STL
Nonstop2h 53m
Frontier
Deal found 2/23$166
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 4/279:55 pm
STL
-
PHX
1 stop17h 00m
Frontier
Thu 4/306:50 am
PHX
-
STL
1 stop10h 31m
Frontier
Deal found 2/25$167
This Frontier deal was found by Cheapflights users on 2/23. 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.
Mon 3/92:09 pm
MCI
-
PHX
Nonstop3h 18m
Frontier
Fri 3/138:50 am
PHX
-
MCI
Nonstop2h 34m
Frontier
Deal found 2/23$168

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 26, 2026.

Round-trip from

$152
(Kiwi.com)

One-way from

$63
(Super.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 February 26, 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

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 3/31

8:40 am-12:05 pm

1 stop5h 25m

Phoenix Sky Harbor Intl

Tue 4/7

5:35 am-10:25 am

Nonstop2h 50m

$302

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 4/27

2:25 pm-3:50 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Sat 5/2

6:40 am-11:30 am

Nonstop2h 50m

$303

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Mon 3/23

3:45 pm-8:19 pm

1 stop6h 34m

Phoenix Sky Harbor Intl

Wed 3/25

6:00 am-1:38 pm

1 stop5h 38m

$314

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 4/10

6:00 pm-7:25 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Mon 4/13

5:00 am-12:50 pm

1 stop5h 50m

$316

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 5/20

7:59 pm-11:29 pm

1 stop5h 30m

Phoenix Sky Harbor Intl

Fri 5/22

12:57 am-10:32 am

1 stop7h 35m

$325

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 3/24

4:05 pm-8:10 pm

1 stop6h 05m

Phoenix Sky Harbor Intl

Tue 3/31

4:45 pm-9:35 pm

Nonstop2h 50m

$325

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 3/21

9:35 pm-11:00 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Wed 3/25

5:55 am-10:40 am

Nonstop2h 45m

$335

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Fri 4/10

6:20 am-7:15 am

Nonstop2h 55m

Phoenix Sky Harbor Intl

Mon 4/13

8:25 pm-12:50 am

Nonstop2h 25m

$342

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Wed 5/20

3:10 pm-7:35 pm

2 stops6h 25m

Phoenix Sky Harbor Intl

Sat 5/23

9:45 am-7:50 pm

2 stops8h 05m

$349

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 4/4

8:25 am-1:50 pm

2 stops7h 25m

Phoenix Sky Harbor Intl

Sat 4/11

9:45 am-6:05 pm

2 stops6h 20m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 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 26, 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 21, 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 26, 2026.

The most flights from USMO to PH1 are scheduled on a Thursday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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?

    United Airlines, Southwest, and Delta can get you from Missouri to Phoenix in just under 5h 25m. Your travel time can differ by up to 5h 24m. 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 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 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 $328, 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 $177 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Missouri to Phoenix

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
O'Hare Intl to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
Seattle to Las Vegas flights
O'Hare Intl to Sky Harbor Intl flights
Minneapolis to Sky Harbor Intl flights
Seattle to Sky Harbor Intl flights
San Francisco to Las Vegas flights
Newark to Sky Harbor Intl flights
John F Kennedy Intl to Sky Harbor Intl flights
Atlanta to Las Vegas flights
Dulles Intl to Las Vegas flights
Los Angeles to Las Vegas flights
Denver to Las Vegas flights
LaGuardia to Las Vegas flights
Boston to Las Vegas flights
Burbank to Las Vegas flights
Minneapolis to Las Vegas flights
Santa Ana to Las Vegas flights
Los Angeles to Sky Harbor Intl flights
Austin to Las Vegas flights
Baltimore to Las Vegas flights
Detroit to Sky Harbor Intl flights
Midway to Las Vegas flights
San Francisco to Sky Harbor Intl flights
Dulles Intl to Sky Harbor Intl flights
Cleveland to Las Vegas flights
Philadelphia to Las Vegas flights
Orlando to Las Vegas flights
Dallas/Fort Worth to Sky Harbor Intl flights
Reagan-National to Las Vegas flights
Hobby to Las Vegas flights
Boston to Sky Harbor Intl flights
Denver to Sky Harbor Intl flights
Detroit to Las Vegas flights
San Jose to Las Vegas flights
Portland to Las Vegas flights
Raleigh to Las Vegas flights
LaGuardia to Sky Harbor Intl flights
Cincinnati to Las Vegas flights
Portland to Sky Harbor Intl flights
George Bush Intcntl to Las Vegas flights
Sky Harbor Intl to Las Vegas flights
Sacramento to Las Vegas flights
Atlanta to Sky Harbor Intl flights
Midway to Sky Harbor Intl flights
San Diego to Las Vegas flights
Charlotte to Las Vegas flights
Tampa to Las Vegas flights

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 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$211FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$300FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$121Average$200FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$138Average$208FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$148Average$398FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$197Average$435FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$199Average$385FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.