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Pennsylvania

$54+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHL
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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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 January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Tue 2/243:49 pm
STL
-
EWR
1 stop16h 11m
Multiple Airlines
Wed 2/253:00 pm
EWR
-
STL
1 stop8h 27m
Multiple Airlines
Deal found 1/28$118
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Wed 2/118:17 pm
STL
-
EWR
1 stop10h 48m
Multiple Airlines
Tue 2/1710:31 pm
EWR
-
STL
1 stop9h 20m
Multiple Airlines
Deal found 1/28$125
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/238:22 pm
STL
-
EWR
1 stop10h 43m
Multiple Airlines
Wed 2/253:00 pm
EWR
-
STL
1 stop8h 27m
Multiple Airlines
Deal found 1/27$127
This Expedia deal was found by Cheapflights users on 1/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:49 pm
STL
-
PHL
1 stop19h 33m
Frontier
Tue 3/311:03 am
PHL
-
STL
1 stop12h 24m
Frontier
Deal found 1/27$128
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Sat 2/148:17 pm
STL
-
EWR
1 stop10h 48m
Multiple Airlines
Tue 2/1710:31 pm
EWR
-
STL
1 stop9h 20m
Multiple Airlines
Deal found 1/27$128
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Wed 2/258:17 pm
STL
-
EWR
1 stop10h 48m
Multiple Airlines
Wed 3/43:00 pm
EWR
-
STL
1 stop8h 27m
Multiple Airlines
Deal found 1/28$130
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Wed 2/188:17 pm
STL
-
EWR
1 stop10h 48m
Multiple Airlines
Thu 2/1910:45 pm
EWR
-
STL
1 stop9h 06m
Multiple Airlines
Deal found 1/28$131
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/238:22 pm
STL
-
EWR
1 stop10h 43m
Multiple Airlines
Thu 2/2610:31 pm
EWR
-
STL
1 stop9h 20m
Multiple Airlines
Deal found 1/27$133
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Wed 2/188:17 pm
STL
-
EWR
1 stop10h 48m
Multiple Airlines
Thu 2/2610:31 pm
EWR
-
STL
1 stop9h 20m
Multiple Airlines
Deal found 1/27$134
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/168:22 pm
STL
-
EWR
1 stop10h 43m
Multiple Airlines
Thu 2/1910:45 pm
EWR
-
STL
1 stop9h 06m
Multiple Airlines
Deal found 1/27$135
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Wed 2/253:49 pm
STL
-
PHL
1 stop18h 52m
Frontier
Mon 3/28:23 pm
PHL
-
STL
1 stop27h 04m
Frontier
Deal found 1/27$136
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 3/28:22 pm
STL
-
EWR
1 stop10h 43m
Multiple Airlines
Thu 3/55:59 pm
EWR
-
STL
1 stop14h 03m
Multiple Airlines
Deal found 1/27$139

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$118
(Kiwi.com)

One-way from

$54
(Trip.com)

Popular in

November

Cheapest in

August

Average price

$422

Good round-trip deal

$369 or less

Good one-way deal

$304 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 Pennsylvania
Search Deals
One-way flight from Missouri to Pennsylvania
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($31 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 January 2026
Search Deals
Price to beat on a round-trip flight from Missouri to Pennsylvania.
Search Deals
Price to beat on a one-way flight from Missouri to Pennsylvania.
Search Deals

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 January 29, 2026.
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

Tue 2/24

3:49 pm-12:22 pm

1 stop19h 33m

Philadelphia

Tue 3/10

7:00 pm-10:37 am

1 stop16h 37m

$146

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 2/27

3:49 pm-9:06 am

1 stop16h 17m

Philadelphia

Fri 3/6

8:25 pm-9:49 am

1 stop14h 24m

$165

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Tue 2/24

3:49 pm-6:15 am

2 stops13h 26m

Philadelphia

Sun 3/1

5:30 am-6:51 am

1 stop26h 21m

$180

Kansas CityNewark

MCI - EWR

MCIEWR

Kansas City

Wed 2/25

4:24 pm-8:05 am

2 stops14h 41m

Newark

Thu 2/26

10:31 pm-9:56 am

1 stop12h 25m

$193

Kansas CityNewark

MCI - EWR

MCIEWR

Kansas City

Thu 2/26

11:26 am-11:29 pm

2 stops11h 03m

Newark

Thu 3/5

10:05 am-10:30 am

2 stops25h 25m

$221

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Tue 3/31

11:27 am-10:08 pm

1 stop9h 41m

Philadelphia

Sun 4/5

5:01 am-10:30 am

1 stop6h 29m

$226

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 2/13

8:20 pm-11:18 am

1 stop13h 58m

Philadelphia

Wed 2/18

3:45 pm-10:27 pm

1 stop7h 42m

$232

Kansas CityNewark

MCI - EWR

MCIEWR

Kansas City

Thu 2/19

11:26 am-11:29 pm

2 stops11h 03m

Newark

Mon 2/23

10:14 pm-3:29 pm

2 stops18h 15m

$250

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Tue 4/21

5:45 pm-9:20 pm

Nonstop2h 35m

Washington, D.C. Dulles Intl

Wed 4/22

5:50 pm-7:48 pm

Nonstop2h 58m

$267

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Wed 3/4

6:00 am-1:25 pm

1 stop6h 25m

New York LaGuardia

Sat 3/14

6:50 am-8:45 am

Nonstop2h 55m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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 January 29, 2026.

It’s optimal to fly from Missouri to Pennsylvania in the evening. By choosing this option you can save up to 60% on the cost of your flight, compared to a flight at noon.

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 January 24, 2026.

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

Weekly flight availability from Missouri to Pennsylvania

Explore weekly flight availability from Missouri to Pennsylvania. 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 January 29, 2026.

The most flights from USMO to USPA are scheduled on a Thursday (6 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (4 on average).

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 January 29, 2026.
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.
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

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
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

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
Delta
7.9
Good
8,128 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

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
United Airlines
7.4
Good
9,215 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

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
American Airlines
7.2
Good
11,205 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

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
Frontier
5.7
Fair
3,056 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

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?

    Flights from Missouri to Pennsylvania have been viewed 20 times in the past calendar month.

  • How long is the flight from Missouri to Pennsylvania?

    Departing from Missouri to Pennsylvania will take you 2h 35m. There are 924 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

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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.
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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$82Average$215FlexibilityNo cancel feeOn-time65%
DeltaCheapest$108Average$357FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$119Average$232FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$208Average$425FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$430FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$241Average$404FlexibilityNo cancel feeOn-time63%

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