Pennsylvania

$57+ Cheap flights from Missouri to Pennsylvania

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — PHL
Jan 16 — Jan 231
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Cheap flight deals from Missouri to Pennsylvania

Cheapest flights from Missouri to Pennsylvania
Explore the most affordable flight options available from Missouri to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This Frontier deal was found by Cheapflights users on 12/16. 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 12/2510:42 amSTL - EWR
1 stop9h 53mFrontier
Wed 12/3110:30 pmEWR - STL
1 stop12h 10mFrontier
Deal found 12/16$188
This Priceline deal was found by Cheapflights users on 12/15. 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.
Tue 12/3010:48 amSTL - IAD
1 stop4h 49mFrontier
Sun 1/45:35 amIAD - STL
1 stop5h 05mFrontier
Deal found 12/15$214
This Booking.com deal was found by Cheapflights users on 12/15. 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 12/247:43 pmSTL - DCA
1 stop16h 18mFrontier
Tue 12/308:00 amDCA - STL
1 stop27h 02mFrontier
Deal found 12/15$226
This American Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 12/256:02 amSTL - DCA
Nonstop2h 08mAmerican Airlines
Wed 12/312:55 pmDCA - STL
Nonstop2h 31mAmerican Airlines
Deal found 12/15$227
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 12/258:15 amSTL - IAD
Nonstop2h 09mUnited Airlines
Wed 12/315:50 pmIAD - STL
Nonstop2h 32mUnited Airlines
Deal found 12/15$227
This Trip.com deal was found by Cheapflights users on 12/15. 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.
Tue 12/2310:48 amSTL - IAD
1 stop4h 49mFrontier
Tue 12/309:58 pmIAD - STL
1 stop25h 35mFrontier
Deal found 12/15$231
This Frontier deal was found by Cheapflights users on 12/16. 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 12/315:19 pmSTL - PHL
1 stop11h 21mFrontier
Sun 1/45:10 amPHL - STL
1 stop5h 30mFrontier
Deal found 12/16$233
This Southwest deal was found by Cheapflights users on 12/15. 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.
Thu 12/251:10 pmSTL - DCA
Nonstop2h 00mSouthwest
Wed 12/313:20 pmDCA - STL
1 stop4h 10mSouthwest
Deal found 12/15$237
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/246:35 pmSTL - IAD
1 stop4h 40mUnited Airlines
Wed 12/318:35 amIAD - STL
Nonstop2h 33mUnited Airlines
Deal found 12/16$237
This Orbitz deal was found by Cheapflights users on 12/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:10 pmSTL - PHL
1 stop30h 30mFrontier
Thu 1/11:46 pmPHL - STL
1 stop9h 47mFrontier
Deal found 12/15$238
This Frontier deal was found by Cheapflights users on 12/15. 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 12/2310:48 amSTL - IAD
1 stop4h 49mFrontier
Thu 1/15:35 amIAD - STL
1 stop5h 05mFrontier
Deal found 12/15$243
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 12/258:05 amSTL - DCA
1 stop5h 12mUnited Airlines
Wed 12/311:00 pmDCA - STL
1 stop5h 54mUnited Airlines
Deal found 12/15$247

Find flight deals from Missouri to Pennsylvania

Keep the following information in mind while searching for Missouri to Pennsylvania flight deals. Data was last updated December 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$130
(Kiwi.com)

One-way from

$57
(Priceline)

Popular in

November

Cheapest in

August

Average price

$463

Good round-trip deal

$537 or less

Good one-way deal

$324 or less
Provider with most accurate pricing for Lambert-St Louis-Philadelphia flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Philadelphia flights.
From Missouri to Pennsylvania
One-way flight from Missouri to Pennsylvania
Highest demand for flights based on searches. 9% potential increase in price ($43 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Missouri to Pennsylvania.
Price to beat on a one-way flight from Missouri to Pennsylvania.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Pennsylvania 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 17, 2025.
Use the filters below to find and compare flights from Missouri to Pennsylvania that are best for you.

Fly from

Missouri

Fly to

Pennsylvania

Route

Depart

Return

Price

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Mon 1/12

5:11 pm-5:43 pm

1 stop23h 32m

Philadelphia

Thu 1/15

8:43 pm-7:54 am

1 stop12h 11m

$137

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 1/7

5:11 pm-8:37 am

1 stop14h 26m

Philadelphia

Wed 1/14

4:08 pm-10:34 pm

1 stop7h 26m

$139

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Mon 1/5

4:27 pm-2:38 pm

1 stop21h 11m

Philadelphia

Thu 1/8

3:56 pm-10:33 pm

1 stop7h 37m

$168

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Thu 1/22

5:42 pm-9:59 am

1 stop15h 17m

Philadelphia

Mon 1/26

3:54 pm-11:33 pm

1 stop8h 39m

$169

Kansas CityPhiladelphia

MCI - PHL

MCIPHL

Kansas City

Fri 1/9

11:26 am-8:47 am

1 stop20h 21m

Philadelphia

Thu 1/15

7:12 pm-10:26 am

1 stop16h 14m

$172

Kansas CityPhiladelphia

MCI - PHL

MCIPHL

Kansas City

Thu 1/8

11:26 am-8:01 pm

1 stop7h 35m

Philadelphia

Thu 1/15

7:12 pm-10:26 am

1 stop16h 14m

$172

Kansas CityPhiladelphia

MCI - PHL

MCIPHL

Kansas City

Thu 1/29

11:26 am-8:01 pm

1 stop7h 35m

Philadelphia

Sun 2/1

6:11 pm-10:31 am

1 stop17h 20m

$174

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 1/14

8:32 pm-11:14 am

1 stop13h 42m

Philadelphia

Mon 1/19

8:43 pm-11:33 pm

1 stop27h 50m

$188

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 1/23

11:18 am-10:32 pm

1 stop10h 14m

Philadelphia

Mon 1/26

3:54 pm-11:33 pm

1 stop8h 39m

$197

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 1/23

11:18 am-7:57 pm

1 stop7h 39m

Philadelphia

Sat 1/24

3:54 pm-11:33 pm

1 stop8h 39m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

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

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

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

Currently, August is the cheapest month in which you can book a flight from Missouri to Pennsylvania (average of $119). Flying from Missouri to Pennsylvania 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 MO to PA?

Find hourly flight availability from Missouri to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 17, 2025.

It’s optimal to fly from Missouri to Pennsylvania in the evening. By choosing this option you can save up to 44% on the cost of your flight, compared to a flight in the morning.

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

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

Travelers seeking maximum savings on their Missouri to Pennsylvania flight should consider departing on Thursday at noon 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.

Reviews of airlines servicing Pennsylvania

Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated December 17, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Missouri to Pennsylvania have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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 Missouri to Pennsylvania. 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 Missouri to Pennsylvania flight route?

  • How long is the flight from Missouri to Pennsylvania?

    Departing from Missouri to Pennsylvania will take you 2h 11m. There are 717 mi between Missouri and Pennsylvania. 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 Missouri to Pennsylvania that include hotel bookings?

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Missouri to Pennsylvania (average of $119). Flying from Missouri to Pennsylvania 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Missouri to Pennsylvania

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

Top 6 airlines flying from Missouri to Pennsylvania

Discover the top 6 airlines that operate flights from Missouri to Pennsylvania. 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$119Average$235FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$132Average$222FlexibilityNo cancel feeOn-time65%
DeltaCheapest$172Average$368FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$198Average$427FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$208Average$430FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$241Average$404FlexibilityNo cancel feeOn-time63%

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