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Cheap flights from Pennsylvania to Missouri 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 Pennsylvania to Missouri departing on 3/3. 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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0 bags

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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.
Multiple Airlines Logo
5:15 am - 6:51 am
EWR
-
STL
26h 36m
1 stop
Multiple Airlines Logo
8:22 pm - 11:29 pm
STL
-
EWR
26h 07m
1 stop
$123Multiple Airlines
Fri, Feb 20 - Mon, Feb 23
Multiple Airlines Logo
3:00 pm - 10:27 pm
EWR
-
STL
8h 27m
1 stop
Multiple Airlines Logo
8:22 pm - 8:05 am
STL
-
EWR
10h 43m
1 stop
$124Multiple Airlines
Tue, Feb 24 - Mon, Mar 2
American Airlines Logo
7:59 pm - 9:25 pm
DCA
-
STL
2h 26mnonstop
American Airlines Logo
3:43 pm - 6:58 pm
STL
-
DCA
2h 15mnonstop
$254American Airlines
Sat, Apr 11 - Fri, Apr 17
American Airlines Logo
7:51 pm - 9:37 pm
DCA
-
STL
2h 46mnonstop
American Airlines Logo
6:06 am - 9:12 am
STL
-
DCA
2h 06mnonstop
$264American Airlines
Wed, Mar 4 - Sat, Mar 7
Southwest Logo
8:00 am - 9:20 am
DCA
-
STL
2h 20mnonstop
Southwest Logo
3:45 pm - 6:45 pm
STL
-
DCA
2h 00mnonstop
$265Southwest
Sat, May 16 - Mon, May 18
United Airlines Logo
6:45 pm - 8:23 pm
IAD
-
STL
2h 38mnonstop
United Airlines Logo
11:25 am - 5:30 pm
STL
-
IAD
5h 05m
1 stop
$266United Airlines
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
5:55 pm - 8:06 pm
IAD
-
MCI
3h 11mnonstop
United Airlines Logo
12:37 pm - 4:07 pm
MCI
-
IAD
2h 30mnonstop
$267United Airlines
Sat, Feb 28 - Tue, Mar 3
Southwest Logo
6:00 am - 11:30 am
LGA
-
STL
6h 30m
1 stop
Southwest Logo
6:00 am - 9:20 am
STL
-
LGA
2h 20mnonstop
$269Southwest
Tue, Apr 21 - Sat, Apr 25
Delta Logo
10:20 am - 12:23 pm
LGA
-
STL
3h 03mnonstop
Delta Logo
5:15 pm - 8:35 pm
STL
-
LGA
2h 20mnonstop
$278Delta
Fri, Mar 6 - Tue, Mar 10
Delta Logo
7:00 am - 11:51 am
DCA
-
MCI
5h 51m
1 stop
Delta Logo
5:47 pm - 10:57 pm
MCI
-
DCA
4h 10m
1 stop
$287Delta
Sat, Feb 28 - Tue, Mar 3

Southwest flights from Pennsylvania to Missouri

Our best Southwest deals on Pennsylvania to Missouri flight tickets
Southwest
May 16
DCA8:00 amWashington, D.C. Reagan-National
2h 20m
STL9:20 amLambert-St Louis
May 18
STL3:45 pmLambert-St Louis
2h 00m
DCA6:45 pmWashington, D.C. Reagan-National
$265
Southwest
Apr 21
LGA6:00 amNew York LaGuardia
6h 30m
1 stop
STL11:30 amLambert-St Louis
Apr 25
STL6:00 amLambert-St Louis
2h 20m
LGA9:20 amNew York LaGuardia
$269
Southwest
Apr 18
DCA7:15 amWashington, D.C. Reagan-National
2h 45m
MCI9:00 amKansas City
Apr 21
MCI8:00 amKansas City
2h 20m
DCA11:20 amWashington, D.C. Reagan-National
$274

United Airlines flights from Pennsylvania to Missouri

Our best United Airlines deals on Pennsylvania to Missouri flight tickets
United Airlines
Mar 4
IAD6:45 pmWashington, D.C. Dulles Intl
2h 38m
STL8:23 pmLambert-St Louis
Mar 11
STL8:17 amLambert-St Louis
6h 52m
1 stop
IAD4:09 pmWashington, D.C. Dulles Intl
$266
United Airlines
Feb 28
IAD1:00 pmWashington, D.C. Dulles Intl
3h 04m
MCI3:04 pmKansas City
Mar 3
MCI12:37 pmKansas City
2h 30m
IAD4:07 pmWashington, D.C. Dulles Intl
$267
United Airlines
Mar 4
IAD8:40 amWashington, D.C. Dulles Intl
2h 33m
STL10:13 amLambert-St Louis
Mar 7
STL7:00 pmLambert-St Louis
3h 59m
1 stop
IAD11:59 pmWashington, D.C. Dulles Intl
$274

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 February 4, 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

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 2/20

5:15 am-6:51 am

1 stop26h 36m

Lambert-St Louis

Mon 2/23

8:22 pm-11:29 pm

1 stop26h 07m

$123

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Tue 2/24

3:00 pm-10:27 pm

1 stop8h 27m

Lambert-St Louis

Mon 3/2

8:22 pm-8:05 am

1 stop10h 43m

$124

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 4/11

7:59 pm-9:25 pm

Nonstop2h 26m

Lambert-St Louis

Fri 4/17

3:43 pm-6:58 pm

Nonstop2h 15m

$254

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Wed 3/4

7:51 pm-9:37 pm

Nonstop2h 46m

Lambert-St Louis

Sat 3/7

6:06 am-9:12 am

Nonstop2h 06m

$264

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 5/16

8:00 am-9:20 am

Nonstop2h 20m

Lambert-St Louis

Mon 5/18

3:45 pm-6:45 pm

Nonstop2h 00m

$265

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 3/3

6:45 pm-8:23 pm

Nonstop2h 38m

Lambert-St Louis

Tue 3/10

11:25 am-5:30 pm

1 stop5h 05m

$266

Washington, D.C.Kansas City

IAD - MCI

IADMCI

Washington, D.C. Dulles Intl

Sat 2/28

5:55 pm-8:06 pm

Nonstop3h 11m

Kansas City

Tue 3/3

12:37 pm-4:07 pm

Nonstop2h 30m

$267

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 4/21

6:00 am-11:30 am

1 stop6h 30m

Lambert-St Louis

Sat 4/25

6:00 am-9:20 am

Nonstop2h 20m

$269

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 3/6

10:20 am-12:23 pm

Nonstop3h 03m

Lambert-St Louis

Tue 3/10

5:15 pm-8:35 pm

Nonstop2h 20m

$278

Washington, D.C.Kansas City

DCA - MCI

DCAMCI

Washington, D.C. Reagan-National

Sat 2/28

7:00 am-11:51 am

1 stop5h 51m

Kansas City

Tue 3/3

5:47 pm-10:57 pm

1 stop4h 10m

$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 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, August 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 $320. If you aren’t able to travel to Missouri during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $320.

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 $385. Flights from Pennsylvania to Missouri on a Sunday will generally be more expensive and average around $466. 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 $382. 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 at noon, with an average ticket price of $439. Departure times at noon 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 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 $404 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 $314 on momondo.

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

There are 2 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?

No. A direct flight is the cheapest option for a flight between Pennsylvania to Missouri.

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

$171

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 $171. The best round-trip flight deal from Pennsylvania to Missouri found on momondo in the last 72 hours is $343.
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

  • 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 $95Free CancellationRating
6.3
8,407 reviews
Search Spirit Airlines flights
FrontierPriceFrom $127Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
American AirlinesPriceFrom $170Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights
DeltaPriceFrom $219Free CancellationRating
7.9
8,138 reviews
Search Delta flights
SouthwestPriceFrom $241Free CancellationRating
8.0
4,272 reviews
Search Southwest flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,236 reviews
Search United Airlines 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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