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Cheap flights from Missouri to Pennsylvania from $57

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Pennsylvania departing on 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Missouri to Pennsylvania

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:22 pm - 11:14 am
STL
-
PHL
13h 52m1 stop
Frontier Logo
8:25 pm - 11:33 pm
PHL
-
STL
28h 08m1 stop
$130Frontier
Mon, Jan 26 - Tue, Jan 27
Multiple Airlines Logo
11:26 am - 9:14 pm
MCI
-
EWR
8h 48m1 stop
Multiple Airlines Logo
10:30 pm - 9:53 am
EWR
-
MCI
12h 23m1 stop
$130Multiple Airlines
Thu, Jan 15 - Sat, Jan 24
Southwest Logo
8:55 am - 11:50 am
STL
-
DCA
1h 55mnonstop
Southwest Logo
12:00 pm - 1:35 pm
DCA
-
STL
2h 35mnonstop
$227Southwest
Sat, Jan 17 - Sun, Jan 18
United Airlines Logo
8:15 am - 11:24 am
STL
-
IAD
2h 09mnonstop
United Airlines Logo
5:50 pm - 7:22 pm
IAD
-
STL
2h 32mnonstop
$227United Airlines
Thu, Dec 25 - Wed, Dec 31
Southwest Logo
8:20 am - 11:15 am
STL
-
DCA
1h 55mnonstop
Southwest Logo
12:00 pm - 1:35 pm
DCA
-
STL
2h 35mnonstop
$231Southwest
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
5:59 pm - 9:10 pm
STL
-
DCA
2h 11mnonstop
American Airlines Logo
7:40 am - 9:24 am
DCA
-
STL
2h 44mnonstop
$235American Airlines
Wed, Jan 7 - Sat, Jan 10
Delta Logo
12:00 pm - 6:01 pm
STL
-
JFK
5h 01m1 stop
Delta Logo
6:00 am - 11:05 am
JFK
-
STL
6h 05m1 stop
$261Delta
Sat, Jan 17 - Sun, Jan 18
United Airlines Logo
7:45 am - 3:18 pm
STL
-
LGA
6h 33m1 stop
United Airlines Logo
5:15 pm - 9:03 pm
LGA
-
STL
4h 48m1 stop
$261United Airlines
Wed, Apr 15 - Tue, Apr 21
Delta Logo
1:10 pm - 4:32 pm
STL
-
LGA
2h 22mnonstop
Delta Logo
6:55 am - 8:57 am
LGA
-
STL
3h 02mnonstop
$267Delta
Thu, Feb 12 - Tue, Feb 17
American Airlines Logo
7:00 am - 1:29 pm
STL
-
JFK
5h 29m1 stop
American Airlines Logo
2:29 pm - 6:57 pm
JFK
-
STL
5h 28m1 stop
$287American Airlines
Thu, Feb 12 - Tue, Feb 24

Delta flights from Missouri to Pennsylvania

Our best Delta deals on Missouri to Pennsylvania flight tickets
Delta
Dec 24
STL7:00 amLambert-St Louis
7h 14m
1 stop
IAD3:14 pmWashington, D.C. Dulles Intl
Dec 31
IAD10:57 amWashington, D.C. Dulles Intl
6h 31m
1 stop
STL4:28 pmLambert-St Louis
$247
Find similar
Delta
Jan 13
STL12:00 pmLambert-St Louis
4h 17m
1 stop
IAD5:17 pmWashington, D.C. Dulles Intl
Jan 20
IAD5:26 pmWashington, D.C. Dulles Intl
4h 17m
1 stop
STL8:43 pmLambert-St Louis
$251
Find similar
Delta
Jan 17
STL12:00 pmLambert-St Louis
5h 01m
1 stop
JFK6:01 pmNew York John F Kennedy Intl
Jan 18
JFK6:00 amNew York John F Kennedy Intl
6h 05m
1 stop
STL11:05 amLambert-St Louis
$261
Find similar

American Airlines flights from Missouri to Pennsylvania

Our best American Airlines deals on Missouri to Pennsylvania flight tickets
American Airlines
Dec 25
STL6:02 amLambert-St Louis
2h 08m
DCA9:10 amWashington, D.C. Reagan-National
Dec 31
DCA2:55 pmWashington, D.C. Reagan-National
2h 31m
STL4:26 pmLambert-St Louis
$227
Find similar
American Airlines
Jan 7
STL5:59 pmLambert-St Louis
2h 11m
DCA9:10 pmWashington, D.C. Reagan-National
Jan 10
DCA7:40 amWashington, D.C. Reagan-National
2h 44m
STL9:24 amLambert-St Louis
$235
Find similar
American Airlines
Jan 7
STL6:00 amLambert-St Louis
5h 44m
1 stop
DCA12:44 pmWashington, D.C. Reagan-National
Jan 10
DCA7:40 amWashington, D.C. Reagan-National
2h 44m
STL9:24 amLambert-St Louis
$245
Find similar

momondo 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, momondo users made 832,500 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

Fly to

Route

Depart

Return

Price

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Mon 1/26

8:22 pm-11:14 am

1 stop13h 52m

Philadelphia

Tue 1/27

8:25 pm-11:33 pm

1 stop28h 08m

$130

Kansas CityNewark

MCI - EWR

MCIEWR

Kansas City

Thu 1/15

11:26 am-9:14 pm

1 stop8h 48m

Newark

Sat 1/24

10:30 pm-9:53 am

1 stop12h 23m

$130

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 1/17

8:55 am-11:50 am

Nonstop1h 55m

Washington, D.C. Reagan-National

Sun 1/18

12:00 pm-1:35 pm

Nonstop2h 35m

$227

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Thu 12/25

8:15 am-11:24 am

Nonstop2h 09m

Washington, D.C. Dulles Intl

Wed 12/31

5:50 pm-7:22 pm

Nonstop2h 32m

$227

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Tue 1/13

8:20 am-11:15 am

Nonstop1h 55m

Washington, D.C. Reagan-National

Tue 1/20

12:00 pm-1:35 pm

Nonstop2h 35m

$231

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 1/7

5:59 pm-9:10 pm

Nonstop2h 11m

Washington, D.C. Reagan-National

Sat 1/10

7:40 am-9:24 am

Nonstop2h 44m

$235

St. LouisNew York

STL - JFK

STLJFK

Lambert-St Louis

Sat 1/17

12:00 pm-6:01 pm

1 stop5h 01m

New York John F Kennedy Intl

Sun 1/18

6:00 am-11:05 am

1 stop6h 05m

$261

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Wed 4/15

7:45 am-3:18 pm

1 stop6h 33m

New York LaGuardia

Tue 4/21

5:15 pm-9:03 pm

1 stop4h 48m

$261

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Thu 2/12

1:10 pm-4:32 pm

Nonstop2h 22m

New York LaGuardia

Tue 2/17

6:55 am-8:57 am

Nonstop3h 02m

$267

St. LouisNew York

STL - JFK

STLJFK

Lambert-St Louis

Thu 2/12

7:00 am-1:29 pm

1 stop5h 29m

New York John F Kennedy Intl

Tue 2/24

2:29 pm-6:57 pm

1 stop5h 28m

$287

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Pennsylvania from

How to get the cheapest flight ticket from Missouri to Pennsylvania

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Pennsylvania?

The month of August is, on average, the cheapest month to fly to Pennsylvania from Missouri, with most prices found around $277. If you don’t want to visit Pennsylvania in August, then you should wait until September to fly from Missouri, when ticket prices are also cheap, with an average price of $340.

What is the cheapest day to depart on your flight to Pennsylvania?

The cheapest day to depart on your flight to Pennsylvania is on a Thursday when prices can be found for as low as $837. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $1,086. These prices are subject to change though, so be sure to set up a Price Alert for flights to Pennsylvania.

What is the cheapest time of day to depart on your flight to Pennsylvania?

Our most recent data shows that the best time of day to fly to Pennsylvania is in the evening. Flights from Missouri to Pennsylvania during this time can be as low as $133. In contrast, the most expensive time of day to depart to Pennsylvania is at noon when prices are around $1,241.

What is the cheapest Missouri to Pennsylvania flight route?

Fly from Kansas City to Philadelphia for the best Missouri - Pennsylvania flight prices

How far in advance should I book a flight to Pennsylvania?

You are more likely to see cheaper flights to Pennsylvania from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Pennsylvania for around $404 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pennsylvania from Missouri for as low as $310 on momondo.

What cabin class options are available on Missouri to Pennsylvania flights?

There are 4 cabin classes available to choose from on Missouri to Pennsylvania flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Missouri to Pennsylvania flights?

You could potentially save up to 24% on your flight if you consider stops on a Missouri to Pennsylvania flight.

Cheap Missouri to Pennsylvania flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Pennsylvania

Best Price Found

$324

Fastest flight time

1h 35m

Direct flights

Every day

Airports in Pennsylvania

152 airports
The best one-way flight to Pennsylvania from Missouri in the past 72 hours is $324. The best round-trip flight deal from Missouri to Pennsylvania found on momondo in the last 72 hours is $537.
The fastest flight from Missouri to Pennsylvania takes 1h 35m
Direct flights go from Missouri to Pennsylvania every day.
There are 152 airports in Pennsylvania. From Missouri there are direct flights to Washington, D.C. Reagan-National (DCA), Philadelphia (PHL), Washington, D.C. Dulles Intl (IAD).
Search flight deals

  • When did momondo last update prices for flights from Missouri to Pennsylvania?

    Prices for flights from Missouri to Pennsylvania refresh daily.

  • How many operators does momondo search for flights from Missouri to Pennsylvania?

  • How old do you have to be to fly from Missouri to Pennsylvania?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Pennsylvania.

  • What documentation or ID do you need to fly to Pennsylvania?

    The required travel and health documents for your Pennsylvania trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Pennsylvania. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Missouri to Pennsylvania?

Best airlines flying from Missouri to Pennsylvania

Compare and see reviews for airlines that fly from Missouri to Pennsylvania with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $119Free CancellationRating
5.8
3,082 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $132Free CancellationRating
6.3
8,188 reviews
Search Spirit Airlines flights
DeltaPriceFrom $172Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $198Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
American AirlinesPriceFrom $208Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
SouthwestPriceFrom $241Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Pennsylvania?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Missouri to Pennsylvania for you.

Can I find flights from Missouri to Pennsylvania with flexible booking policies on momondo?

Yes. All flights to Pennsylvania from Missouri on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Missouri to Pennsylvania?

Once all potential Missouri to Pennsylvania flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Missouri to Pennsylvania right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Pennsylvania from Missouri. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Pennsylvania trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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