Missouri

$60+ Cheap flights from Pennsylvania 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STL
Jan 22 — Jan 291
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Cheap flight deals from Pennsylvania to Missouri

Cheapest flights from Pennsylvania to Missouri
Explore the most affordable flight options available from Pennsylvania to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Booking.com deal was found by Cheapflights users on 12/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:30 pmEWR - STL
1 stop12h 10mFrontier
Sun 1/410:57 amSTL - EWR
1 stop9h 38mFrontier
Deal found 12/22$231
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amPHL - STL
2 stops28h 40mMultiple Airlines
Mon 1/125:11 pmSTL - PHL
1 stop27h 52mMultiple Airlines
Deal found 12/21$241
This Frontier deal was found by Cheapflights users on 12/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:30 pmEWR - MCI
1 stop12h 38mFrontier
Mon 1/511:38 amMCI - EWR
1 stop8h 57mFrontier
Deal found 12/22$242
This Trip.com deal was found by Cheapflights users on 12/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:00 amDCA - STL
1 stop27h 02mFrontier
Mon 1/57:43 pmSTL - DCA
1 stop16h 19mFrontier
Deal found 12/21$269
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:35 amIAD - STL
Nonstop2h 33mUnited Airlines
Wed 12/316:35 pmSTL - IAD
1 stop4h 40mUnited Airlines
Deal found 12/21$272
This Southwest deal was found by Cheapflights users on 12/21. 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 12/316:10 pmDCA - STL
Nonstop2h 25mSouthwest
Thu 1/18:25 amSTL - DCA
1 stop5h 15mSouthwest
Deal found 12/21$272
This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Wed 12/316:20 amJFK - STL
1 stop28h 20mFrontier
Sun 1/410:57 amSTL - JFK
1 stop21h 04mFrontier
Deal found 12/22$274
This Expedia deal was found by Cheapflights users on 12/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:00 pmLGA - STL
1 stop11h 33mFrontier
Sun 1/410:57 amSTL - LGA
1 stop11h 17mFrontier
Deal found 12/21$277
This Frontier deal was found by Cheapflights users on 12/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:10 amPHL - STL
1 stop10h 14mFrontier
Mon 1/128:50 amSTL - PHL
1 stop10h 19mFrontier
Deal found 12/21$282
This Frontier deal was found by Cheapflights users on 12/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:58 pmIAD - STL
1 stop12h 47mFrontier
Thu 1/110:42 amSTL - IAD
1 stop6h 34mFrontier
Deal found 12/21$283
This United Airlines deal was found by Cheapflights users on 12/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:30 amEWR - STL
Nonstop3h 07mUnited Airlines
Thu 1/17:00 amSTL - EWR
Nonstop2h 34mUnited Airlines
Deal found 12/22$283
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amPHL - STL
2 stops28h 40mFrontier
Sun 1/115:11 pmSTL - PHL
1 stop14h 26mFrontier
Deal found 12/21$285

Find flight deals from Pennsylvania to Missouri

Keep the following information in mind while searching for Pennsylvania to Missouri flight deals. Data was last updated December 23, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$131
(Kiwi.com)

One-way from

$60
(Kiwi.com)

Popular in

May

Cheapest in

August

Average price

$465

Good round-trip deal

$358 or less

Good one-way deal

$202 or less
Provider with most accurate pricing for Philadelphia-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Lambert-St Louis flights.
From Pennsylvania to Missouri
One-way flight from Pennsylvania to Missouri
Highest demand for flights based on searches. 7% potential increase in price ($34 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Pennsylvania to Missouri.
Price to beat on a one-way flight from Pennsylvania to Missouri.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pennsylvania 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 December 23, 2025.
Use the filters below to find and compare flights from Pennsylvania to Missouri that are best for you.

Fly from

Pennsylvania

Fly to

Missouri

Route

Depart

Return

Price

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Tue 1/20

6:20 pm-6:51 am

1 stop13h 31m

Lambert-St Louis

Tue 1/27

5:42 pm-10:37 am

1 stop15h 55m

$131

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Tue 1/20

2:36 pm-6:51 am

1 stop17h 15m

Lambert-St Louis

Tue 1/27

5:42 pm-3:40 pm

2 stops20h 58m

$158

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Sun 2/1

10:45 pm-9:21 am

1 stop11h 36m

Lambert-St Louis

Wed 2/4

8:22 pm-4:49 pm

2 stops19h 27m

$160

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Thu 1/22

11:09 am-11:33 pm

1 stop13h 24m

Lambert-St Louis

Mon 1/26

10:16 am-5:14 pm

1 stop5h 58m

$162

NewarkKansas City

EWR - MCI

EWRMCI

Newark

Wed 1/7

5:51 am-5:10 pm

1 stop12h 19m

Kansas City

Mon 1/12

11:26 am-11:42 am

1 stop23h 16m

$185

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Thu 1/8

3:56 pm-10:33 pm

1 stop7h 37m

Lambert-St Louis

Fri 1/9

8:35 am-6:10 pm

1 stop8h 35m

$197

NewarkKansas City

EWR - MCI

EWRMCI

Newark

Wed 2/25

5:00 am-3:29 pm

1 stop11h 29m

Kansas City

Sun 3/1

11:26 am-11:58 pm

1 stop11h 32m

$200

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Mon 1/12

6:00 pm-10:34 pm

1 stop29h 34m

Lambert-St Louis

Fri 1/16

8:32 pm-11:42 am

2 stops14h 10m

$207

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Tue 1/6

6:59 pm-10:33 pm

1 stop28h 34m

Lambert-St Louis

Sun 1/11

5:11 pm-8:37 am

1 stop14h 26m

$210

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Thu 2/5

11:09 am-11:33 pm

1 stop13h 24m

Lambert-St Louis

Mon 2/9

10:16 am-10:32 pm

1 stop11h 16m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 60 results
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Best time to book a flight from Pennsylvania to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Pennsylvania 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 Pennsylvania to Missouri

What is the cheapest month to book a flight from Pennsylvania to Missouri?

Currently, February is the cheapest month in which you can book a flight from Pennsylvania to Missouri (average of $128). Flying from Pennsylvania to Missouri in June is currently the most expensive (average of $229). 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 PA to MO?

Find hourly flight availability from Pennsylvania 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 December 23, 2025.

It’s optimal to fly from Pennsylvania to Missouri in the evening. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Pennsylvania to Missouri?

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

Travelers seeking maximum savings on their Pennsylvania to Missouri flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 23, 2025.
Read through reviews of airlines operating flights from Pennsylvania to Missouri, such as Southwest, Delta, and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Pennsylvania to Missouri flight route?

  • How long is the flight from Pennsylvania to Missouri?

    A quick flight from Pennsylvania to Missouri can take about 5h 54m. Frontier provides one of the quickest options available for as low as $261. There are 869 mi between Pennsylvania and Missouri. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Pennsylvania to Missouri that include hotel bookings?

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

  • How can I find direct flights from Pennsylvania to Missouri?

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

  • Can I find deals for business class flights from Pennsylvania to Missouri?

    Yes. Cheapflights offers flight deals from Pennsylvania 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 Pennsylvania to Missouri?

    Currently, February is the cheapest month in which you can book a flight from Pennsylvania to Missouri (average of $128). Flying from Pennsylvania to Missouri in June is currently the most expensive (average of $229). 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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Alternative routes for Pennsylvania to Missouri

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Pennsylvania to Missouri

Discover the top 6 airlines that operate flights from Pennsylvania 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$95Average$297FlexibilityNo cancel feeOn-time65%
FrontierCheapest$130Average$242FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$171Average$409FlexibilityNo cancel feeOn-time71%
DeltaCheapest$214Average$363FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$241Average$410FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$248Average$411FlexibilityNo cancel feeOn-time69%

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