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$27+ Cheap flights from Sky Harbor Intl (PHX) to Missouri

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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Cheap flight deals from Sky Harbor Intl to Missouri

Keep the following information in mind while searching for Sky Harbor Intl to Missouri flight deals. Data was last updated November 6, 2025.

Round-trip from

$129
(Frontier)

One-way from

$27
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$337

Good round-trip deal

$209 or less

Good one-way deal

$108 or less
From Phoenix Sky Harbor Intl to Missouri
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One-way flight from Phoenix Sky Harbor Intl to Missouri
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Highest demand for flights based on searches. 8% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Missouri.
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Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Missouri.
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Find flight deals from Sky Harbor Intl to Missouri

Cheapest flights from Sky Harbor Intl to Missouri
Explore the most affordable flight options available from Sky Harbor Intl to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This Frontier deal was found by Cheapflights users on 11/5. 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.
Thu 11/206:00 amPHX - MCI
Nonstop2h 31mFrontier
Mon 12/18:28 pmMCI - PHX
1 stop5h 04mFrontier
Deal found 11/5$129
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 12/317:00 amPHX - MCI
1 stop11h 50mFrontier
Thu 1/111:53 amMCI - PHX
Nonstop3h 02mFrontier
Deal found 11/5$133
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Sun 11/232:30 pmPHX - MCI
Nonstop2h 31mFrontier
Mon 12/18:28 pmMCI - PHX
1 stop28h 21mFrontier
Deal found 11/6$142
This Frontier deal was found by Cheapflights users on 11/6. 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.
Tue 11/2510:05 amPHX - MCI
1 stop8h 29mFrontier
Fri 11/288:28 pmMCI - PHX
1 stop5h 04mFrontier
Deal found 11/6$144
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Sat 12/2710:31 pmPHX - MCI
1 stop20h 20mFrontier
Thu 1/111:53 amMCI - PHX
Nonstop3h 02mFrontier
Deal found 11/5$145
This CheapOair deal was found by Cheapflights users on 11/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:32 pmPHX - STL
1 stop16h 42mFrontier
Thu 12/41:16 pmSTL - PHX
1 stop20h 32mFrontier
Deal found 11/6$145
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Fri 12/263:50 pmPHX - STL
Nonstop2h 57mFrontier
Mon 12/298:52 pmSTL - PHX
Nonstop3h 31mFrontier
Deal found 11/5$146
This Priceline deal was found by Cheapflights users on 11/3. 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.
Mon 11/177:25 amPHX - STL
Nonstop2h 59mFrontier
Sat 11/227:43 pmSTL - PHX
1 stop5h 49mFrontier
Deal found 11/3$147
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Thu 11/2010:43 pmPHX - MCI
2 stops19h 50mFrontier
Thu 11/2710:26 amMCI - PHX
Nonstop3h 03mFrontier
Deal found 11/5$148
This Southwest deal was found by Cheapflights users on 11/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:30 pmPHX - MCI
Nonstop2h 30mSouthwest
Thu 1/15:25 pmMCI - PHX
1 stop6h 00mSouthwest
Deal found 11/6$149
This Southwest deal was found by Cheapflights users on 11/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:25 amPHX - STL
Nonstop2h 55mSouthwest
Wed 12/108:50 amSTL - PHX
Nonstop3h 30mSouthwest
Deal found 11/5$149
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Tue 12/307:00 amPHX - MCI
1 stop11h 50mFrontier
Thu 1/111:53 amMCI - PHX
Nonstop3h 02mFrontier
Deal found 11/5$150

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Missouri 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 November 6, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Missouri that are best for you.

Fly from

Sky Harbor Intl

Fly to

Missouri

Route

Depart

Return

Price

PhoenixKansas City

PHX - MCI

PHXMCI

Phoenix Sky Harbor Intl

Fri 12/5

7:00 am-1:53 pm

1 stop5h 53m

Kansas City

Sun 12/7

11:58 am-2:00 pm

Nonstop3h 02m

$166

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Tue 12/9

1:30 pm-5:25 pm

Nonstop2h 55m

Lambert-St Louis

Fri 12/12

5:10 pm-7:35 pm

Nonstop3h 25m

$174

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Fri 12/5

6:30 pm-10:20 pm

Nonstop2h 50m

Lambert-St Louis

Sat 12/6

5:25 am-7:55 am

Nonstop3h 30m

$174

PhoenixKansas City

PHX - MCI

PHXMCI

Phoenix Sky Harbor Intl

Mon 11/24

6:27 pm-12:24 am

1 stop4h 57m

Kansas City

Thu 11/27

10:37 am-5:48 pm

1 stop8h 11m

$197

PhoenixKansas City

PHX - MCI

PHXMCI

Phoenix Sky Harbor Intl

Wed 12/31

7:18 am-2:49 pm

1 stop6h 31m

Kansas City

Thu 1/1

6:00 am-12:09 pm

1 stop7h 09m

$197

PhoenixKansas City

PHX - MCI

PHXMCI

Phoenix Sky Harbor Intl

Wed 2/18

7:10 am-10:35 am

Nonstop2h 25m

Kansas City

Wed 2/25

3:25 pm-8:15 pm

1 stop5h 50m

$218

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 12/4

12:59 am-9:10 am

1 stop7h 11m

Lambert-St Louis

Sat 12/6

1:00 pm-5:49 pm

1 stop5h 49m

$223

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Wed 12/3

12:05 pm-5:15 pm

1 stop4h 10m

Lambert-St Louis

Wed 12/10

8:50 am-11:20 am

Nonstop3h 30m

$225

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 12/4

12:59 am-9:10 am

1 stop7h 11m

Lambert-St Louis

Mon 12/8

6:00 am-11:54 am

1 stop6h 54m

$229

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Wed 11/19

6:30 pm-10:20 pm

Nonstop2h 50m

Lambert-St Louis

Thu 11/27

12:10 pm-2:30 pm

Nonstop3h 20m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 59 results
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Best time to book a flight from Sky Harbor Intl to Missouri

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

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

Currently, November is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Missouri (average of $106). Flying from Phoenix Sky Harbor Intl Airport to Missouri in June is currently the most expensive (average of $193). 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 PHX to MO?

Find hourly flight availability from Sky Harbor Intl to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 33% on flights from Phoenix Sky Harbor Intl Airport to Missouri by exploring options for tickets in the evening.

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

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

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Missouri flight should consider departing on Friday evenings 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.

Weekly flight availability from Phoenix Sky Harbor Intl Airport to Missouri

Explore weekly flight availability from Sky Harbor Intl to Missouri. 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 November 6, 2025.

The most flights from PHX to USMO are scheduled on a Thursday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missouri. Reviews last updated November 6, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Phoenix Sky Harbor Intl Airport to Missouri by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,001 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,007 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,040 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,115 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

    A quick flight from Phoenix Sky Harbor Intl Airport to Missouri can take about 2h 55m. Frontier provides one of the quickest options available for as low as $174. The distance from Phoenix Sky Harbor Intl Airport to Missouri is about 1258 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Missouri one-way?

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $80. Delta flights start at $99 while deals on United Airlines start at $109 one-way.

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

    The most popular route from Phoenix Sky Harbor Intl Airport to Missouri is Phoenix Sky Harbor Intl - Kansas City. You may also consider Phoenix Sky Harbor Intl - Lambert-St Louis or Phoenix Sky Harbor Intl - Springfield-Branson.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Phoenix Sky Harbor Intl Airport to Missouri on time: SkyWest Airlines (89%), Southwest (83%), Alaska Airlines (78%).

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

    While on average a flight from Phoenix Sky Harbor Intl Airport to Missouri is generally $262, our data shows the cheapest flight currently is $70. When looking at the most popular route, (Phoenix Sky Harbor Intl - Kansas City), you can expect to pay $148 for that flight.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Missouri (average of $106). Flying from Phoenix Sky Harbor Intl Airport to Missouri in June is currently the most expensive (average of $193). 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.

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Alternative routes for Sky Harbor Intl to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Sky Harbor Intl to Missouri

Discover the top 7 airlines that operate flights from Sky Harbor Intl to Missouri. 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$103Average$210FlexibilityNo cancel feeOn-time62%
DeltaCheapest$111Average$374FlexibilityNo cancel feeOn-timeN/A
Allegiant AirCheapest$147Average$217FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$196Average$391FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$198Average$418FlexibilityNo cancel feeOn-time69%
Spirit AirlinesCheapest$209Average$353FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$221Average$417FlexibilityNo cancel feeOn-time71%

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