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$53+ Cheap flights from Pennsylvania to Missouri

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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STL
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheap flight deals from Pennsylvania to Missouri

Keep the following information in mind while searching for Pennsylvania to Missouri flight deals. Data was last updated julio 3, 2025.

Round-trip from

$181
(FlightHub)

One-way from

$53
(Priceline)

Popular in

April

Cheapest in

August

Average price

$329

Good round-trip deal

$339 or less

Good one-way deal

$180 or less
From Pennsylvania to Missouri
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One-way flight from Pennsylvania to Missouri
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Highest demand for flights based on searches. 8% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Pennsylvania to Missouri.
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Price to beat on a one-way flight from Pennsylvania to Missouri.
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Find flight deals from Pennsylvania to Missouri

Cheapest flights from Pennsylvania to Missouri
Explore the most affordable flight options available from Pennsylvania to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/246:05 amEWR - STL
1 stop4h 47mSpirit Airlines
dom. 8/310:47 amSTL - EWR
1 stop8h 13mSpirit Airlines
Deal found 7/1$181
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/1611:04 amEWR - STL
1 stop27h 30mFrontier
sáb. 7/192:52 pmSTL - EWR
1 stop8h 52mFrontier
Deal found 7/2$191
This Priceline deal was found by Cheapflights users on 7/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/65:55 amEWR - STL
1 stop10h 08mMultiple Airlines
jue. 10/98:44 amSTL - EWR
1 stop9h 01mMultiple Airlines
Deal found 7/2$193
This United Airlines deal was found by Cheapflights users on 7/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/79:30 pmEWR - STL
Nonstop3h 05mUnited Airlines
mié. 8/136:00 amSTL - EWR
Nonstop2h 35mUnited Airlines
Deal found 7/2$197
This Priceline deal was found by Cheapflights users on 7/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/711:04 amIAD - STL
1 stop9h 19mFrontier
mar. 11/255:25 pmSTL - IAD
1 stop5h 28mFrontier
Deal found 7/2$201
This Southwest deal was found by Cheapflights users on 7/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/208:00 amDCA - STL
Nonstop2h 10mSouthwest
lun. 8/259:50 amSTL - DCA
1 stop4h 05mSouthwest
Deal found 7/2$203
This American Airlines deal was found by Cheapflights users on 7/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/297:51 pmDCA - STL
Nonstop2h 11mAmerican Airlines
dom. 8/316:02 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Deal found 7/2$204
This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/267:22 amIAD - STL
1 stop6h 09mDelta
mié. 8/277:00 amSTL - IAD
1 stop6h 31mDelta
Deal found 7/3$217
This United Airlines deal was found by Cheapflights users on 7/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/126:00 pmDCA - STL
1 stop5h 45mUnited Airlines
mar. 8/195:30 pmSTL - DCA
1 stop4h 13mUnited Airlines
Deal found 7/1$217
This United Airlines deal was found by Cheapflights users on 7/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/296:00 amIAD - STL
1 stop5h 52mUnited Airlines
vie. 10/318:25 amSTL - IAD
Nonstop2h 06mUnited Airlines
Deal found 7/2$223
This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/161:40 pmDCA - STL
1 stop6h 27mDelta
lun. 8/183:40 pmSTL - DCA
1 stop5h 08mDelta
Deal found 7/3$231
This Priceline deal was found by Cheapflights users on 7/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/106:30 amLGA - STL
1 stop8h 04mMultiple Airlines
lun. 7/1410:47 amSTL - LGA
1 stop7h 13mMultiple Airlines
Deal found 7/2$236

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated julio 3, 2025.
Use the filters below to find and compare flights from Pennsylvania to Missouri that are best for you.

Fly from

Pennsylvania

Fly to

Missouri

Route

Depart

Return

Price

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

jue. 7/24

6:05 am-9:52 am

1 stop4h 47m

Lambert-St Louis

dom. 8/3

10:47 am-8:00 pm

1 stop8h 13m

$181

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

mié. 7/16

11:04 am-1:34 pm

1 stop27h 30m

Lambert-St Louis

sáb. 7/19

2:52 pm-12:44 am

1 stop8h 52m

$191

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

lun. 10/6

5:55 am-3:03 pm

1 stop10h 08m

Lambert-St Louis

jue. 10/9

8:44 am-6:45 pm

1 stop9h 01m

$193

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

jue. 8/7

9:30 pm-11:35 pm

Nonstop3h 05m

Lambert-St Louis

mié. 8/13

6:00 am-9:35 am

Nonstop2h 35m

$197

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

jue. 8/7

11:04 am-7:23 pm

1 stop9h 19m

Lambert-St Louis

mar. 11/25

5:25 pm-11:53 pm

1 stop5h 28m

$201

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

mié. 8/20

8:00 am-9:10 am

Nonstop2h 10m

Lambert-St Louis

lun. 8/25

9:50 am-2:55 pm

1 stop4h 05m

$203

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

vie. 8/29

7:51 pm-9:02 pm

Nonstop2h 11m

Lambert-St Louis

dom. 8/31

6:02 am-9:03 am

Nonstop2h 01m

$204

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

mar. 8/26

7:22 am-12:31 pm

1 stop6h 09m

Lambert-St Louis

mié. 8/27

7:00 am-2:31 pm

1 stop6h 31m

$217

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

mar. 8/12

6:00 pm-10:45 pm

1 stop5h 45m

Lambert-St Louis

mar. 8/19

5:30 pm-10:43 pm

1 stop4h 13m

$217

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

mié. 10/29

6:00 am-10:52 am

1 stop5h 52m

Lambert-St Louis

vie. 10/31

8:25 am-11:31 am

Nonstop2h 06m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 60 results
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Best time to book a flight from Pennsylvania to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Pennsylvania 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 Pennsylvania to Missouri

What is the cheapest month to book a flight from Pennsylvania to Missouri?

Currently, August is the cheapest month in which you can book a flight from Pennsylvania to Missouri (average of $311). Flying from Pennsylvania to Missouri in March is currently the most expensive (average of $356). 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 PA to MO?

Find hourly flight availability from Pennsylvania to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to Missouri as you normally would.

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated julio 3, 2025.
Read through reviews of airlines operating flights from Pennsylvania to Missouri, such as Alaska Airlines, Southwest, and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania to Missouri. 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 Pennsylvania to Missouri flight route?

    Flights from Pennsylvania to Missouri have been viewed 32 times in the past calendar month.

  • What are the cheapest airlines to fly from Pennsylvania to Missouri one-way?

    One-way options have recently been found by users for as low as $53 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $63 and American Airlines from $98 one-way.

  • Can I find deals for flights from Pennsylvania to Missouri that include hotel bookings?

    Yes. In addition to deals on Pennsylvania to Missouri flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pennsylvania to Missouri?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pennsylvania to Missouri.

  • Can I find deals for business class flights from Pennsylvania to Missouri?

    Yes. Cheapflights offers flight deals from Pennsylvania to Missouri 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 Pennsylvania to Missouri?

    Currently, August is the cheapest month in which you can book a flight from Pennsylvania to Missouri (average of $311). Flying from Pennsylvania to Missouri in March is currently the most expensive (average of $356). 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.

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Alternative routes for Pennsylvania to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Pennsylvania to Missouri

Discover the top 6 airlines that operate flights from Pennsylvania to Missouri. 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$150FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$164Average$262FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$171Average$401FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$459FlexibilityNo cancel feeOn-time69%
DeltaCheapest$200Average$362FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$245Average$399FlexibilityNo cancel feeOn-time63%

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