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Cheap flights from Pennsylvania to Missouri from $111

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to Missouri departing on 6/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Pennsylvania to Missouri

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:30 am - 5:30 pm
PHL
-
STL
10h 00m
1 stop
Frontier Logo
7:03 pm - 6:00 am
STL
-
PHL
9h 57m
1 stop
$230Frontier
ث, يونيو 30 - ر, يوليو 8
Frontier Logo
10:29 pm - 8:52 am
EWR
-
STL
11h 23m
1 stop
Frontier Logo
4:57 pm - 1:03 am
STL
-
EWR
7h 06m
1 stop
$240Frontier
ج, يوليو 3 - ر, يوليو 8
United Airlines Logo
10:31 am - 3:46 pm
IAD
-
STL
6h 15m
1 stop
United Airlines Logo
8:43 am - 11:55 am
STL
-
IAD
2h 12mnonstop
$267United Airlines
ث, يوليو 7 - ث, يوليو 14
Delta Logo
6:05 am - 9:31 am
LGA
-
STL
4h 26m
1 stop
Delta Logo
6:09 pm - 11:40 pm
STL
-
LGA
4h 31m
1 stop
$313Delta
ر, يوليو 15 - ر, يوليو 22
American Airlines Logo
8:00 pm - 9:50 pm
DCA
-
MCI
2h 50mnonstop
American Airlines Logo
7:15 am - 11:00 am
MCI
-
DCA
2h 45mnonstop
$314American Airlines
ج, يوليو 3 - ث, يوليو 7
Delta Logo
6:00 am - 11:46 am
JFK
-
STL
6h 46m
1 stop
Delta Logo
6:00 am - 1:15 pm
STL
-
JFK
6h 15m
1 stop
$314Delta
ر, أغسطس 12 - خ, أغسطس 13
American Airlines Logo
6:09 am - 10:04 am
DCA
-
MCI
4h 55m
1 stop
American Airlines Logo
4:24 pm - 10:16 pm
MCI
-
DCA
4h 52m
1 stop
$315American Airlines
س, أكتوبر 3 - ن, أكتوبر 5
Southwest Logo
8:15 am - 9:55 am
LGA
-
STL
2h 40mnonstop
Southwest Logo
10:20 am - 1:45 pm
STL
-
LGA
2h 25mnonstop
$319Southwest
س, يونيو 20 - س, يوليو 4
Southwest Logo
6:00 am - 7:40 am
DCA
-
MCI
2h 40mnonstop
Southwest Logo
8:05 am - 11:30 am
MCI
-
DCA
2h 25mnonstop
$321Southwest
خ, أغسطس 6 - س, أغسطس 8
United Airlines Logo
6:10 am - 10:29 am
IAD
-
MCI
5h 19m
1 stop
United Airlines Logo
5:45 pm - 9:26 pm
MCI
-
IAD
2h 41mnonstop
$324United Airlines
ر, يونيو 24 - س, يونيو 27

American Airlines flights from Pennsylvania to Missouri

Our best American Airlines deals on Pennsylvania to Missouri flight tickets
American Airlines
Jun 17
IAD6:20 amWashington, D.C. Dulles Intl
6h 39m
1 stop
STL11:59 amLambert-St Louis
Jun 20
STL6:12 pmLambert-St Louis
5h 01m
1 stop
IAD12:13 amWashington, D.C. Dulles Intl
$286
American Airlines
Aug 6
PHL3:28 pmPhiladelphia
2h 33m
STL5:01 pmLambert-St Louis
Aug 12
STL5:42 pmLambert-St Louis
2h 21m
PHL9:03 pmPhiladelphia
$301
American Airlines
Jun 25
IAD8:22 pmWashington, D.C. Dulles Intl
4h 22m
1 stop
STL11:44 pmLambert-St Louis
Jun 29
STL6:13 pmLambert-St Louis
5h 00m
1 stop
IAD12:13 amWashington, D.C. Dulles Intl
$305

Southwest flights from Pennsylvania to Missouri

Our best Southwest deals on Pennsylvania to Missouri flight tickets
Southwest
Aug 18
PHL6:25 amPhiladelphia
2h 15m
STL7:40 amLambert-St Louis
Aug 25
STL10:55 amLambert-St Louis
2h 10m
PHL2:05 pmPhiladelphia
$277
Southwest
Aug 18
PHL7:55 amPhiladelphia
4h 25m
1 stop
STL11:20 amLambert-St Louis
Aug 25
STL10:55 amLambert-St Louis
2h 10m
PHL2:05 pmPhiladelphia
$287
Southwest
Aug 18
PHL2:45 pmPhiladelphia
2h 20m
STL4:05 pmLambert-St Louis
Aug 20
STL7:05 pmLambert-St Louis
2h 10m
PHL10:15 pmPhiladelphia
$298

momondo Fare Finder

 
Customize your flight search to find flights from Pennsylvania to Missouri 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 مايو 30, 2026.
Use the filters below to find and compare flights from Pennsylvania to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

ث 6/30

8:30 am-5:30 pm

1 stop10h 00m

Lambert-St Louis

ر 7/8

7:03 pm-6:00 am

1 stop9h 57m

$230

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

ج 7/3

10:29 pm-8:52 am

1 stop11h 23m

Lambert-St Louis

ر 7/8

4:57 pm-1:03 am

1 stop7h 06m

$240

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

ث 7/7

10:31 am-3:46 pm

1 stop6h 15m

Lambert-St Louis

ث 7/14

8:43 am-11:55 am

Nonstop2h 12m

$267

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

ر 7/15

6:05 am-9:31 am

1 stop4h 26m

Lambert-St Louis

ر 7/22

6:09 pm-11:40 pm

1 stop4h 31m

$313

Washington, D.C.Kansas City

DCA - MCI

DCAMCI

Washington, D.C. Reagan-National

ج 7/3

8:00 pm-9:50 pm

Nonstop2h 50m

Kansas City

ث 7/7

7:15 am-11:00 am

Nonstop2h 45m

$314

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

ر 8/12

6:00 am-11:46 am

1 stop6h 46m

Lambert-St Louis

خ 8/13

6:00 am-1:15 pm

1 stop6h 15m

$314

Washington, D.C.Kansas City

DCA - MCI

DCAMCI

Washington, D.C. Reagan-National

س 10/3

6:09 am-10:04 am

1 stop4h 55m

Kansas City

ن 10/5

4:24 pm-10:16 pm

1 stop4h 52m

$315
Quickest round-trip

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

س 6/20

8:15 am-9:55 am

Nonstop2h 40m

Lambert-St Louis

س 7/4

10:20 am-1:45 pm

Nonstop2h 25m

$319

Washington, D.C.Kansas City

DCA - MCI

DCAMCI

Washington, D.C. Reagan-National

خ 8/6

6:00 am-7:40 am

Nonstop2h 40m

Kansas City

س 8/8

8:05 am-11:30 am

Nonstop2h 25m

$321

Washington, D.C.Kansas City

IAD - MCI

IADMCI

Washington, D.C. Dulles Intl

ر 6/24

6:10 am-10:29 am

1 stop5h 19m

Kansas City

س 6/27

5:45 pm-9:26 pm

Nonstop2h 41m

$324

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 Missouri from

How to get the cheapest flight ticket from Pennsylvania to Missouri

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 Missouri?

In general, November is the cheapest month to fly from Pennsylvania to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $72. If you aren’t able to travel to Missouri during the month of November, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $95.

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

The cheapest day to depart from Pennsylvania to Missouri is on a Wednesday when prices can be found for as low as $383. Flights from Pennsylvania to Missouri on a Sunday will generally be more expensive and average around $474. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Missouri is in the afternoon. momondo users have found flights departing from Pennsylvania to Missouri in the afternoon for as low as $377. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Missouri are more costly in the morning, with an average ticket price of $434. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Pennsylvania to Missouri flight route?

Fly from Pittsburgh to Lambert-St Louis for the best Pennsylvania - Missouri flight prices

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

You are more likely to see cheaper flights to Missouri from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to Missouri for around $408 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missouri from Pennsylvania for as low as $305 on momondo.

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

There are 3 cabin classes available to choose from on Pennsylvania to Missouri 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 Pennsylvania to Missouri flights?

You could potentially save up to 18% on your flight if you consider stops on a Pennsylvania to Missouri flight.

Cheap Pennsylvania to Missouri flight deals and tips

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

Best Price Found

$191

Fastest flight time

1h 40m

Direct flights

Every day

Airports in Missouri

55 airports
The best one-way flight to Missouri from Pennsylvania in the past 72 hours is $191. The best round-trip flight deal from Pennsylvania to Missouri found on momondo in the last 72 hours is $400.
The fastest flight from Pennsylvania to Missouri takes 1h 40m
Direct flights go from Pennsylvania to Missouri every day.
There are 55 airports in Missouri. From Pennsylvania there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Pennsylvania to Missouri

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

    Prices for flights from Pennsylvania to Missouri refresh daily.

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

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

    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 Pennsylvania to Missouri.

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

    The travel and health documents required for your trip to Missouri can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Missouri. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Pennsylvania to Missouri

Compare and see reviews for airlines that fly from Pennsylvania to Missouri with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $93Free CancellationRating
6.2
Search Spirit Airlines flights
FrontierPriceFrom $128Free CancellationRating
5.6
2,929 reviews
Search Frontier flights
American AirlinesPriceFrom $170Free CancellationRating
7.1
11,639 reviews
Search American Airlines flights
United AirlinesPriceFrom $196Free CancellationRating
7.4
9,766 reviews
Search United Airlines flights
DeltaPriceFrom $219Free CancellationRating
7.9
8,417 reviews
Search Delta flights
SouthwestPriceFrom $235Free CancellationRating
8.0
4,265 reviews
Search Southwest flights
JetBluePriceFrom $358Free CancellationRating
7.1
2,985 reviews
Search JetBlue flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missouri from Pennsylvania.

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

Yes. momondo enables you to select and highlight flights to Missouri from Pennsylvania with this policy.

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

Once all potential Pennsylvania to Missouri 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 Pennsylvania to Missouri right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Pennsylvania to Missouri flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Missouri trip

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