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$78+ Cheap flights from Missouri to Philadelphia (PHL)

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Missouri to Philadelphia

Keep the following information in mind while searching for Missouri to Philadelphia flight deals. Data was last updated September 15, 2025.

Round-trip from

$143
(Priceline)

One-way from

$78
(CheapOair)

Popular in

November

Cheapest in

August

Average price

$419

Good round-trip deal

$397 or less

Good one-way deal

$211 or less
From Missouri to Philadelphia
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One-way flight from Missouri to Philadelphia
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Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Missouri to Philadelphia.
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Price to beat on a one-way flight from Missouri to Philadelphia.
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Find flight deals from Missouri to Philadelphia

Cheapest flights from Missouri to Philadelphia
Explore the most affordable flight options available from Missouri to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Priceline deal was found by Cheapflights users on 9/15. 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.
Mon 10/64:00 pmSTL - PHL
1 stop7h 59mFrontier
Thu 10/95:20 amPHL - STL
1 stop6h 17mFrontier
Deal found 9/15$143
This Priceline deal was found by Cheapflights users on 9/14. 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 11/67:45 pmSTL - PHL
1 stop8h 04mFrontier
Sun 11/95:50 amPHL - STL
1 stop5h 22mFrontier
Deal found 9/14$153
This Frontier deal was found by Cheapflights users on 9/14. 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 9/254:00 pmSTL - PHL
1 stop7h 57mFrontier
Sun 9/285:15 amPHL - STL
1 stop10h 49mFrontier
Deal found 9/14$161
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:22 pmSTL - PHL
1 stop21h 04mFrontier
Thu 11/67:10 amPHL - STL
1 stop11h 17mFrontier
Deal found 9/15$162
This CheapOair deal was found by Cheapflights users on 9/14. 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.
Mon 10/139:06 pmSTL - PHL
1 stop18h 19mFrontier
Wed 10/155:53 pmPHL - STL
1 stop17h 44mFrontier
Deal found 9/14$163
This Frontier deal was found by Cheapflights users on 9/13. 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 11/167:45 pmSTL - PHL
1 stop8h 04mFrontier
Wed 11/195:35 pmPHL - STL
1 stop6h 26mFrontier
Deal found 9/13$166
This CheapOair deal was found by Cheapflights users on 9/13. 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.
Mon 9/224:00 pmSTL - PHL
1 stop7h 57mFrontier
Sat 9/276:37 pmPHL - STL
1 stop21h 27mFrontier
Deal found 9/13$171
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Sat 10/117:15 pmSTL - PHL
1 stop13h 17mSpirit Airlines
Sat 10/185:33 amPHL - STL
1 stop13h 37mSpirit Airlines
Deal found 9/13$177
This CheapOair deal was found by Cheapflights users on 9/13. 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.
Sun 9/2810:39 amSTL - PHL
1 stop28h 53mFrontier
Thu 10/26:45 amPHL - STL
1 stop27h 21mFrontier
Deal found 9/13$180
This Frontier deal was found by Cheapflights users on 9/14. 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.
Mon 9/224:00 pmSTL - PHL
1 stop7h 57mFrontier
Thu 9/255:15 amPHL - STL
1 stop10h 49mFrontier
Deal found 9/14$182
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/39:32 pmSTL - PHL
1 stop22h 24mFrontier
Sun 10/55:15 amPHL - STL
1 stop10h 49mFrontier
Deal found 9/15$185
This Orbitz deal was found by Cheapflights users on 9/13. 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.
Tue 9/305:15 amMCI - PHL
1 stop6h 47mMultiple Airlines
Mon 10/65:15 amPHL - MCI
1 stop12h 05mMultiple Airlines
Deal found 9/13$211

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Philadelphia 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 September 15, 2025.
Use the filters below to find and compare flights from Missouri to Philadelphia that are best for you.

Fly from

Missouri

Fly to

Philadelphia

Route

Depart

Return

Price

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 10/10

6:05 pm-1:07 am

1 stop6h 02m

Philadelphia

Sun 10/12

5:05 am-12:46 pm

1 stop8h 41m

$143

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Sat 10/11

7:15 pm-9:32 am

1 stop13h 17m

Philadelphia

Sat 10/18

5:33 am-6:10 pm

1 stop13h 37m

$177

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Mon 9/22

4:00 pm-12:57 am

1 stop7h 57m

Philadelphia

Sat 9/27

6:37 pm-3:04 pm

1 stop21h 27m

$179

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Thu 10/9

11:32 am-12:59 am

1 stop12h 27m

Philadelphia

Sun 10/12

5:05 am-12:46 pm

1 stop8h 41m

$195

Kansas CityPhiladelphia

MCI - PHL

MCIPHL

Kansas City

Fri 10/17

8:38 pm-5:19 am

1 stop7h 41m

Philadelphia

Tue 11/4

1:58 pm-9:04 am

1 stop20h 06m

$236

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Thu 11/13

12:20 pm-9:13 pm

1 stop7h 53m

Philadelphia

Mon 11/17

1:19 pm-9:07 am

2 stops44h 48m

$238

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Thu 9/25

10:49 am-12:57 am

2 stops13h 08m

Philadelphia

Wed 10/1

2:45 pm-3:04 pm

1 stop25h 19m

$243

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Sat 10/11

7:15 pm-11:52 am

1 stop15h 37m

Philadelphia

Mon 10/20

6:42 am-9:07 am

1 stop27h 25m

$244

SpringfieldPhiladelphia

SGF - PHL

SGFPHL

Springfield-Branson

Tue 10/14

6:30 pm-12:45 am

1 stop5h 15m

Philadelphia

Wed 10/15

6:30 am-10:50 am

1 stop5h 20m

$251

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 9/26

1:57 pm-12:57 am

2 stops10h 00m

Philadelphia

Sun 9/28

5:15 am-3:04 pm

1 stop10h 49m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

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

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

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

Currently, August is the cheapest month in which you can book a flight from Missouri to Philadelphia (average of $236). Flying from Missouri to Philadelphia in March is currently the most expensive (average of $295). 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 PHL?

Find hourly flight availability from Missouri to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

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

Weekly flight availability from Missouri to Philadelphia

Explore weekly flight availability from Missouri to Philadelphia. 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 September 15, 2025.

The most flights from USMO to PHL are scheduled on a Sunday (12 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

Related info for your journey

Find useful and relevant information for your journey from Missouri to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from Missouri?

    For a flight from Missouri to Philadelphia, you will be flying into Philadelphia. Philadelphia (PHL) is just 7.0 mi from the center of the city.

  • How popular is this Missouri to Philadelphia flight route?

    Flights from Missouri to Philadelphia have been viewed 16 times in the past calendar month.

  • How long is the flight from Missouri to Philadelphia?

    A quick flight from Missouri to Philadelphia can take about 5h 15m. Frontier provides one of the quickest options available for as low as $251. The distance between Missouri and Philadelphia is about 995 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 Missouri to Philadelphia one-way?

    One-way options have recently been found by users for as low as $78 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $93 and Southwest from $96 one-way.

  • What are the most popular routes from Missouri to Philadelphia?

    Most travelers choose Kansas City - Philadelphia, Lambert-St Louis - Philadelphia or Springfield-Branson - Philadelphia when deciding on the best route from Missouri to Philadelphia.

  • What are the most reliable airlines from Missouri to Philadelphia?

    No one likes to see their flight delayed. When booking a flight from Missouri to Philadelphia consider choosing Southwest (81%), Qatar Airways (69%) or British Airways (67%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Missouri to Philadelphia?

    While on average a flight from Missouri to Philadelphia is generally $1,502, our data shows the cheapest flight currently is $142. When looking at the most popular route, (Kansas City - Philadelphia), you can expect to pay $181 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Missouri to Philadelphia (average of $236). Flying from Missouri to Philadelphia in March is currently the most expensive (average of $295). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Pottstown
Reading
Dewey Beach
Ephrata
Camden
Ocean City
Cherry Hill
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

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Alternative routes for Missouri to Philadelphia

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Top 6 airlines flying from Missouri to Philadelphia

Discover the top 6 airlines that operate flights from Missouri to Philadelphia. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$106Average$227FlexibilityNo cancel feeOn-time65%
FrontierCheapest$119Average$218FlexibilityNo cancel feeOn-time62%
DeltaCheapest$220Average$452FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$243Average$481FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$277Average$460FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$284Average$423FlexibilityNo cancel feeOn-time63%

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