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$50+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHL
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap 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 July 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/246:17 pm
STL
-
PHL
1 stop11h 58m
Frontier
Mon 8/318:30 am
PHL
-
STL
1 stop9h 52m
Frontier
Deal found 7/27$161
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/112:29 pm
STL
-
PHL
1 stop7h 49m
Frontier
Mon 9/148:41 am
PHL
-
STL
1 stop5h 29m
Frontier
Deal found 7/27$166
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 10/22:29 pm
STL
-
PHL
1 stop7h 49m
Frontier
Tue 10/65:32 pm
PHL
-
STL
1 stop20h 38m
Frontier
Deal found 7/27$167
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/112:29 pm
STL
-
PHL
1 stop7h 49m
Frontier
Wed 9/168:41 am
PHL
-
STL
1 stop5h 29m
Frontier
Deal found 7/27$168
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Mon 9/142:29 pm
STL
-
PHL
1 stop7h 49m
Frontier
Sat 9/197:59 pm
PHL
-
STL
2 stops42h 11m
Frontier
Deal found 7/28$187
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/252:29 pm
STL
-
PHL
2 stops19h 33m
Frontier
Tue 9/295:32 pm
PHL
-
STL
1 stop20h 38m
Frontier
Deal found 7/27$199
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/216:17 pm
STL
-
PHL
1 stop11h 58m
Frontier
Sun 8/238:30 am
PHL
-
STL
1 stop9h 52m
Frontier
Deal found 7/27$206
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:26 am
MCI
-
PHL
1 stop10h 07m
Frontier
Tue 9/88:37 pm
PHL
-
MCI
1 stop17h 45m
Frontier
Deal found 7/24$252
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/146:17 pm
MCI
-
PHL
1 stop13h 22m
Frontier
Sun 8/164:30 pm
PHL
-
MCI
1 stop25h 40m
Frontier
Deal found 7/25$253
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:26 am
MCI
-
PHL
1 stop10h 07m
Multiple Airlines
Sun 9/136:10 pm
PHL
-
MCI
2 stops44h 12m
Multiple Airlines
Deal found 7/24$254
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/134:32 pm
MCI
-
PHL
1 stop12h 28m
Frontier
Mon 8/178:30 am
PHL
-
MCI
1 stop9h 40m
Frontier
Deal found 7/26$255
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/274:47 pm
MCI
-
PHL
1 stop12h 43m
Frontier
Sun 8/308:35 am
PHL
-
MCI
2 stops27h 06m
Frontier
Deal found 7/25$256

Find flight deals from Missouri to Philadelphia

Keep the following information in mind while searching for Missouri to Philadelphia flight deals. Data was last updated July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$161
(Kiwi.com)

One-way from

$50
(Trip.com)

Popular in

November

Cheapest in

September

Average price

$489

Good round-trip deal

$359 or less

Good one-way deal

$272 or less
Provider with most accurate pricing for Lambert-St Louis-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Philadelphia flights.
Search Deals
From Missouri to Philadelphia
Search Deals
One-way flight from Missouri to Philadelphia
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Missouri to Philadelphia.
Search Deals
Price to beat on a one-way flight from Missouri to Philadelphia.
Search Deals

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 July 28, 2026.
Use the filters below to find and compare flights from Missouri to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 9/11

10:20 am-1:30 pm

Nonstop2h 10m

Philadelphia

Wed 9/16

6:25 am-7:40 am

Nonstop2h 15m

$282

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Thu 9/10

10:40 am-4:13 pm

1 stop4h 33m

Philadelphia

Mon 9/14

7:20 pm-11:42 pm

1 stop5h 22m

$297

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Sat 9/19

5:45 am-1:30 pm

2 stops6h 45m

Philadelphia

Mon 9/21

12:45 pm-7:10 pm

2 stops7h 25m

$307

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 10/30

2:30 pm-9:50 pm

2 stops6h 20m

Philadelphia

Sat 10/31

11:30 am-5:35 pm

1 stop7h 05m

$307

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 9/25

7:05 pm-10:20 pm

Nonstop2h 15m

Philadelphia

Tue 9/29

6:25 am-7:40 am

Nonstop2h 15m

$307

ColumbiaPhiladelphia

COU - PHL

COUPHL

Columbia Regional

Wed 12/2

6:24 pm-12:11 am

1 stop4h 47m

Philadelphia

Mon 12/7

5:43 am-9:58 am

1 stop5h 15m

$318

ColumbiaPhiladelphia

COU - PHL

COUPHL

Columbia Regional

Thu 12/3

5:00 am-12:25 pm

1 stop6h 25m

Philadelphia

Mon 12/7

11:39 am-5:23 pm

1 stop6h 44m

$318

ColumbiaPhiladelphia

COU - PHL

COUPHL

Columbia Regional

Tue 12/15

6:24 pm-12:11 am

1 stop4h 47m

Philadelphia

Tue 1/12

3:01 pm-8:55 pm

2 stops6h 54m

$324

JoplinPhiladelphia

JLN - PHL

JLNPHL

Joplin

Wed 10/28

1:33 pm-11:39 pm

1 stop9h 06m

Philadelphia

Wed 11/11

6:15 am-12:37 pm

1 stop7h 22m

$324

SpringfieldPhiladelphia

SGF - PHL

SGFPHL

Springfield-Branson

Mon 10/5

6:08 am-1:15 pm

1 stop6h 07m

Philadelphia

Mon 10/12

6:35 am-10:53 am

1 stop5h 18m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 58 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Missouri to Philadelphia (average of $373). Flying from Missouri to Philadelphia in March is currently the most expensive (average of $495). 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 July 28, 2026.

When flying from Missouri to Philadelphia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 70% versus a flight at noon.

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 July 28, 2026.

The most flights from USMO to PHL are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

How much does it cost to fly round-trip from Missouri to Philadelphia?

Airfare is below average for this route at the moment.
Missouri to Philadelphia flights typically cost between $277 and $471 in August.
The cheapest round-trip price found within the last 5 days was $161 on Frontier (Aug 24-Aug 31).

How far ahead should I book a flight from Missouri to Philadelphia?

To ensure you get the cheapest price possible for a flight from Missouri to Philadelphia, you should look to book at least 88 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Use this chart to determine the cheapest time to fly round-trip from Missouri to Philadelphia. Price data was last updated on July 25, 2026.

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

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 22 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 2h 10m. Southwest provides one of the quickest options available for as low as $282. The distance between Missouri and Philadelphia is about 811 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 $72 on Frontier. Other airlines that offer cheap prices include American Airlines from $125 and Southwest from $144 one-way.

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

    Most travelers choose Lambert-St Louis - Philadelphia, Kansas City - 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 Iberia (89%), Aer Lingus (87%) or British Airways (85%) 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 $764, our data shows the cheapest flight currently is $214. When looking at the most popular route, (Lambert-St Louis - Philadelphia), you can expect to pay $259 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, September is the cheapest month in which you can book a flight from Missouri to Philadelphia (average of $373). Flying from Missouri to Philadelphia in March is currently the most expensive (average of $495). 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
Wildwood
Reading
King of Prussia
Camden
Ocean City
Cherry Hill
Lewes
Plymouth Meeting
Wyomissing
Wildwood Crest
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Vineland

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Alternative routes for Missouri to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Missouri to Philadelphia

Discover the top 5 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 July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$119Average$235FlexibilityNo cancel feeOn-time62%
DeltaCheapest$210Average$393FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$250Average$431FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$250Average$474FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$287Average$466FlexibilityNo cancel feeOn-time63%

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