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Sky Harbor Intl

$49+ Cheap flights from Missouri to Sky Harbor Intl (PHX)

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Nov 6 — Nov 131
Thu 11/6
Thu 11/13
1 adult, Economy
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Cheap flight deals from Missouri to Sky Harbor Intl

Keep the following information in mind while searching for Missouri to Sky Harbor Intl flight deals. Data was last updated October 7, 2025.

Round-trip from

$145
(Kiwi.com)

One-way from

$49
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$332

Good round-trip deal

$256 or less

Good one-way deal

$158 or less
From Missouri to Phoenix Sky Harbor Intl
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One-way flight from Missouri to Phoenix Sky Harbor Intl
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Highest demand for flights based on searches. 8% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Missouri to Phoenix Sky Harbor Intl.
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Price to beat on a one-way flight from Missouri to Phoenix Sky Harbor Intl.
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Find flight deals from Missouri to Sky Harbor Intl

Cheapest flights from Missouri to Sky Harbor Intl
Explore the most affordable flight options available from Missouri to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 7, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/6. 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 12/58:33 pmMCI - PHX
1 stop13h 31mFrontier
Mon 12/810:11 amPHX - MCI
1 stop8h 21mFrontier
Deal found 10/6$145
This Frontier deal was found by Cheapflights users on 10/6. 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.
Thu 12/113:55 pmMCI - PHX
Nonstop2h 54mFrontier
Sun 12/1410:34 amPHX - MCI
Nonstop2h 36mFrontier
Deal found 10/6$147
This Southwest deal was found by Cheapflights users on 10/4. 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.
Sat 11/16:05 amMCI - PHX
Nonstop2h 50mSouthwest
Sat 11/88:55 amPHX - MCI
Nonstop2h 30mSouthwest
Deal found 10/4$149
This Mytrip deal was found by Cheapflights users on 10/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:28 pmMCI - PHX
1 stop14h 34mFrontier
Thu 11/138:43 pmPHX - MCI
1 stop21h 50mFrontier
Deal found 10/6$150
This Priceline deal was found by Cheapflights users on 10/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:26 amMCI - PHX
Nonstop3h 03mFrontier
Sun 11/232:30 pmPHX - MCI
Nonstop2h 31mFrontier
Deal found 10/5$151
This Gotogate deal was found by Cheapflights users on 10/6. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/279:59 pmSTL - PHX
1 stop22h 51mFrontier
Mon 11/310:53 pmPHX - STL
1 stop9h 14mFrontier
Deal found 10/6$151
This Booking.com deal was found by Cheapflights users on 10/5. 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.
Fri 10/318:28 pmMCI - PHX
1 stop25h 19mFrontier
Mon 11/38:43 pmPHX - MCI
1 stop19h 36mFrontier
Deal found 10/5$152
This Booking.com deal was found by Cheapflights users on 10/6. 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.
Fri 10/249:59 pmSTL - PHX
1 stop27h 42mFrontier
Mon 10/279:59 pmPHX - STL
1 stop9h 08mFrontier
Deal found 10/6$152
This Cheapflightsfares deal was found by Cheapflights users on 10/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:09 pmSTL - PHX
Nonstop3h 22mFrontier
Fri 11/2111:14 amPHX - STL
Nonstop2h 54mFrontier
Deal found 10/6$155
This Frontier deal was found by Cheapflights users on 10/5. 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 11/283:53 pmSTL - PHX
Nonstop3h 33mFrontier
Fri 12/128:00 amPHX - STL
Nonstop2h 59mFrontier
Deal found 10/5$157
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 12/37:43 pmSTL - PHX
2 stops26h 49mFrontier
Mon 12/88:00 amPHX - STL
Nonstop2h 59mFrontier
Deal found 10/5$159
This Priceline deal was found by Cheapflights users on 10/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/184:51 pmSTL - PHX
1 stop8h 50mFrontier
Mon 10/209:27 amPHX - STL
1 stop9h 37mFrontier
Deal found 10/5$160

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Sky Harbor Intl 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 October 7, 2025.
Use the filters below to find and compare flights from Missouri to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Missouri

Fly to

Sky Harbor Intl

Route

Depart

Return

Price

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Fri 11/7

8:28 pm-8:47 pm

1 stop25h 19m

Phoenix Sky Harbor Intl

Mon 11/10

8:43 pm-5:19 pm

1 stop19h 36m

$150

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Fri 10/31

8:28 pm-7:47 pm

1 stop25h 19m

Phoenix Sky Harbor Intl

Mon 11/3

8:43 pm-5:19 pm

1 stop19h 36m

$152

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 10/30

8:40 pm-7:50 am

1 stop13h 10m

Phoenix Sky Harbor Intl

Tue 11/4

9:05 pm-9:07 am

1 stop11h 02m

$173

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Fri 10/31

2:05 pm-2:55 pm

Nonstop2h 50m

Phoenix Sky Harbor Intl

Mon 11/3

6:30 pm-10:00 pm

Nonstop2h 30m

$184

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Mon 11/24

5:27 pm-11:59 pm

1 stop7h 32m

Phoenix Sky Harbor Intl

Thu 11/27

7:15 am-2:55 pm

1 stop6h 40m

$217

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 12/9

9:10 am-11:35 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

Sat 12/13

12:10 pm-8:00 pm

1 stop6h 50m

$219

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Sat 11/8

6:15 pm-10:43 pm

1 stop5h 28m

Phoenix Sky Harbor Intl

Fri 11/14

12:59 am-9:52 am

1 stop7h 53m

$237

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Wed 12/10

6:20 pm-12:46 am

1 stop7h 26m

Phoenix Sky Harbor Intl

Mon 12/15

6:30 pm-12:29 am

1 stop4h 59m

$243

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Fri 12/5

6:20 pm-12:46 am

1 stop7h 26m

Phoenix Sky Harbor Intl

Mon 12/8

10:55 am-5:25 pm

1 stop5h 30m

$249

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 11/13

8:28 pm-12:29 am

1 stop5h 01m

Phoenix Sky Harbor Intl

Sun 11/16

6:00 am-3:54 pm

2 stops8h 54m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/5

Showing 1-10 of 53 results
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Best time to book a flight from Missouri to Sky Harbor Intl

Have a flexible travel schedule? Discover the best time to fly to Sky Harbor Intl 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 Sky Harbor Intl Airport

What is the cheapest month to book a flight from Missouri to Phoenix Sky Harbor Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Missouri to Phoenix Sky Harbor Intl Airport (average of $111). Flying from Missouri to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $217). 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 Sky Harbor Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 7, 2025.

When flying from Missouri to Phoenix Sky Harbor Intl Airport, 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 20% versus a flight at noon.

What is the cheapest day to fly from Missouri to Phoenix Sky Harbor Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Missouri to Sky Harbor Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Missouri to Phoenix Sky Harbor Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Sky Harbor Intl. 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 Sky Harbor Intl Airport?

    Departing from Missouri to Phoenix Sky Harbor Intl Airport will take you 2h 50m. The distance from Missouri to Phoenix Sky Harbor Intl Airport is about 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 Sky Harbor Intl Airport one-way?

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $70. Users have also found prices from $85 and $109 on Frontier and Delta, respectively.

  • What are the most popular routes from Missouri to Phoenix Sky Harbor Intl Airport?

    While some choose either Kansas City - Phoenix Sky Harbor Intl or Springfield-Branson - Phoenix Sky Harbor Intl, Lambert-St Louis - Phoenix Sky Harbor Intl is the most popular route from Missouri to Phoenix Sky Harbor Intl Airport.

  • What are the most reliable airlines from Missouri to Phoenix Sky Harbor Intl Airport?

    The top 3 most reliable airlines when flying from Missouri to Phoenix Sky Harbor Intl Airport are SkyWest Airlines (100%), Alaska Airlines (92%) and American Airlines (91%).

  • What are the cheapest flights from Missouri to Phoenix Sky Harbor Intl Airport?

    Looking at all options, your cheapest flight can be booked for $104. While the most popular route (Lambert-St Louis - Phoenix Sky Harbor Intl) can be booked for $139 on average, our data indicates $305 when flying from Missouri to Phoenix Sky Harbor Intl Airport.

  • Can I find deals for flights from Missouri to Sky Harbor Intl that include hotel bookings?

    Yes. In addition to deals on Missouri to Sky Harbor Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Sky Harbor Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Sky Harbor Intl.

  • Can I find deals for business class flights from Missouri to Sky Harbor Intl?

    Yes. Cheapflights offers flight deals from Missouri to Sky Harbor Intl 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 Sky Harbor Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Missouri to Phoenix Sky Harbor Intl Airport (average of $111). Flying from Missouri to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $217). 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

Traveling to a place near Phoenix Sky Harbor Intl Airport?

Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locations
Payson
Chandler
Casa Grande
Globe
Goodyear
Camp Verde
Glendale
Buckeye
Peoria
Surprise
Paradise Valley
Avondale
Guadalupe

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Alternative routes for Missouri to Sky Harbor Intl

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Top 7 airlines flying from Missouri to Sky Harbor Intl

Discover the top 7 airlines that operate flights from Missouri to Sky Harbor Intl. 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 October 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$206FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$139Average$225FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$150Average$269FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$203Average$437FlexibilityNo cancel feeOn-time69%
DeltaCheapest$234Average$342FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$238Average$401FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$245Average$442FlexibilityNo cancel feeOn-time71%

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