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Sky Harbor Intl

$67+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Jul 30 — Aug 61
Wed 7/30
Wed 8/6
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 July 25, 2025.

Round-trip from

$223
(FlightHub)

One-way from

$67
(FlightHub)

Popular in

March

Cheapest in

August

Average price

$371

Good round-trip deal

$289 or less

Good one-way deal

$172 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. 9% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 25, 2025.

This FlightHub deal was found by Cheapflights users on 7/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1112:05 pmSTL - PHX
1 stop11h 59mMultiple Airlines
Sat 9/138:00 amPHX - STL
1 stop6h 03mMultiple Airlines
Deal found 7/23$223
This American Airlines deal was found by Cheapflights users on 7/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/263:45 pmSGF - PHX
1 stop8h 26mAmerican Airlines
Sat 8/3011:59 pmPHX - SGF
1 stop8h 21mAmerican Airlines
Deal found 7/24$225
This Priceline deal was found by Cheapflights users on 7/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/63:55 pmMCI - PHX
Nonstop2h 54mFrontier
Mon 11/1012:59 pmPHX - MCI
1 stop5h 03mFrontier
Deal found 7/22$248
This FlightHub deal was found by Cheapflights users on 7/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:52 pmSTL - PHX
1 stop23h 28mFrontier
Mon 10/208:00 amPHX - STL
Nonstop2h 59mFrontier
Deal found 7/24$248
This Delta deal was found by Cheapflights users on 7/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/275:30 pmSGF - PHX
1 stop7h 19mDelta
Sat 8/306:05 amPHX - SGF
1 stop7h 04mDelta
Deal found 7/23$253
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/152:51 pmMCI - PHX
Nonstop2h 45mAmerican Airlines
Mon 8/187:21 pmPHX - MCI
Nonstop2h 38mAmerican Airlines
Deal found 7/22$257
This Southwest deal was found by Cheapflights users on 7/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/203:00 pmMCI - PHX
Nonstop2h 45mSouthwest
Sat 8/236:00 amPHX - MCI
1 stop5h 10mSouthwest
Deal found 7/21$267
This Delta deal was found by Cheapflights users on 7/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/152:30 pmMCI - PHX
1 stop5h 40mDelta
Sat 8/161:42 pmPHX - MCI
1 stop7h 21mDelta
Deal found 7/23$277
This American Airlines deal was found by Cheapflights users on 7/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:29 pmSTL - PHX
Nonstop3h 36mAmerican Airlines
Wed 11/2612:45 amPHX - STL
1 stop12h 41mAmerican Airlines
Deal found 7/24$278
This Booking.com deal was found by Cheapflights users on 7/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/142:30 pmSTL - PHX
1 stop9h 07mSpirit Airlines
Sun 8/1710:42 pmPHX - STL
1 stop12h 50mSpirit Airlines
Deal found 7/23$279
This United Airlines deal was found by Cheapflights users on 7/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/86:24 pmJLN - PHX
1 stop5h 36mUnited Airlines
Tue 8/1212:35 pmPHX - JLN
1 stop9h 05mUnited Airlines
Deal found 7/23$284
This FlightHub deal was found by Cheapflights users on 7/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/710:30 amMCI - PHX
1 stop14h 04mMultiple Airlines
Mon 8/119:32 amPHX - MCI
1 stop7h 32mMultiple Airlines
Deal found 7/22$301

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 July 25, 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

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 9/11

12:05 pm-10:04 pm

1 stop11h 59m

Phoenix Sky Harbor Intl

Sat 9/13

8:00 am-4:03 pm

1 stop6h 03m

$223

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Tue 8/26

3:45 pm-10:11 pm

1 stop8h 26m

Phoenix Sky Harbor Intl

Sat 8/30

11:59 pm-10:20 am

1 stop8h 21m

$225

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Thu 11/6

3:55 pm-5:49 pm

Nonstop2h 54m

Phoenix Sky Harbor Intl

Mon 11/10

12:59 pm-7:02 pm

1 stop5h 03m

$248

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 10/15

7:52 pm-5:20 pm

1 stop23h 28m

Phoenix Sky Harbor Intl

Mon 10/20

8:00 am-12:59 pm

Nonstop2h 59m

$248

SpringfieldPhoenix

SGF - PHX

SGFPHX

Springfield-Branson

Wed 8/27

5:30 pm-10:49 pm

1 stop7h 19m

Phoenix Sky Harbor Intl

Sat 8/30

6:05 am-3:09 pm

1 stop7h 04m

$253

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Fri 8/15

2:51 pm-3:36 pm

Nonstop2h 45m

Phoenix Sky Harbor Intl

Mon 8/18

7:21 pm-11:59 pm

Nonstop2h 38m

$257

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Wed 8/20

6:55 am-9:55 am

1 stop5h 00m

Phoenix Sky Harbor Intl

Wed 8/27

10:50 am-3:25 pm

Nonstop2h 35m

$267

Kansas CityPhoenix

MCI - PHX

MCIPHX

Kansas City

Fri 8/15

2:30 pm-6:10 pm

1 stop5h 40m

Phoenix Sky Harbor Intl

Sat 8/16

1:42 pm-11:03 pm

1 stop7h 21m

$277

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 8/26

1:24 pm-8:49 pm

1 stop9h 25m

Phoenix Sky Harbor Intl

Thu 9/4

8:30 am-8:32 pm

1 stop10h 02m

$278

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 8/14

2:30 pm-9:37 pm

1 stop9h 07m

Phoenix Sky Harbor Intl

Sun 8/17

10:42 pm-1:32 pm

1 stop12h 50m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 42 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, January is the cheapest month in which you can book a flight from Missouri to Phoenix Sky Harbor Intl Airport (average of $258). Flying from Missouri to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $337). 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 July 25, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Phoenix Sky Harbor Intl Airport as you normally would.

How much does it cost to fly round-trip from Missouri to Phoenix Sky Harbor Intl Airport?

Reviews of airlines servicing Sky Harbor Intl

Get insights into the airlines that provide service to Sky Harbor Intl. 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 Sky Harbor Intl. Reviews last updated July 25, 2025.
Read through reviews of airlines operating flights from Missouri to Phoenix Sky Harbor Intl Airport, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,235 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,967 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,876 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $67. Users have also found prices from $90 and $126 on Frontier and American Airlines, 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 (74%), Southwest (73%) and American Airlines (56%).

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

    Looking at all options, your cheapest flight can be booked for $92. While the most popular route (Lambert-St Louis - Phoenix Sky Harbor Intl) can be booked for $167 on average our data indicates $318 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, January is the cheapest month in which you can book a flight from Missouri to Phoenix Sky Harbor Intl Airport (average of $258). Flying from Missouri to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $337). 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
Chandler
Payson
Peoria
Glendale
Globe
Goodyear
Surprise
Buckeye
Camp Verde
Casa Grande
Paradise Valley
Avondale
Guadalupe

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Alternative routes for Missouri to Sky Harbor Intl

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$198FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$104Average$220FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$150Average$269FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$188Average$434FlexibilityNo cancel feeOn-time71%
DeltaCheapest$196Average$346FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$203Average$426FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$257Average$408FlexibilityNo cancel feeOn-time63%

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