$48+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STL
ene. 8 — ene. 151
1 adult, Economy
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Cheapest flights from Pennsylvania to MissouriExplore 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 diciembre 9, 2025.
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 diciembre 9, 2025.
This CheapOair deal was found by Cheapflights users on 12/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/168:00 amDCA - STL
1 stop27h 14mFrontier
vie. 12/197:43 pmSTL - DCA
1 stop25h 16mFrontier
Deal found 12/6![Frontier logo]()
$263
This Frontier deal was found by Cheapflights users on 12/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/139:20 pmIAD - STL
1 stop12h 39mFrontier
lun. 12/1510:47 amSTL - IAD
1 stop11h 18mFrontier
Deal found 12/9![Frontier logo]()
$264
This CheapOair deal was found by Cheapflights users on 12/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/116:00 pmDCA - STL
1 stop17h 14mFrontier
sáb. 12/137:43 pmSTL - DCA
1 stop16h 23mFrontier
Deal found 12/7![Frontier logo]()
$265
This Frontier deal was found by Cheapflights users on 12/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/255:35 amIAD - STL
1 stop5h 05mFrontier
lun. 12/2910:40 amSTL - IAD
1 stop9h 23mFrontier
Deal found 12/7![Frontier logo]()
$267
This Frontier deal was found by Cheapflights users on 12/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/145:45 amIAD - STL
1 stop5h 02mFrontier
lun. 12/1510:47 amSTL - IAD
1 stop5h 38mFrontier
Deal found 12/8![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 12/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/128:00 amDCA - STL
1 stop27h 14mFrontier
lun. 12/157:43 pmSTL - DCA
1 stop16h 23mFrontier
Deal found 12/7![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 12/8. 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.
lun. 12/1510:00 pmEWR - STL
2 stops25h 33mMultiple Airlines
jue. 12/184:27 pmSTL - EWR
1 stop7h 02mMultiple Airlines
Deal found 12/8![Multiple Airlines logo]()
$273
This Frontier deal was found by Cheapflights users on 12/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1810:30 pmEWR - MCI
1 stop12h 38mFrontier
lun. 12/2211:13 amMCI - EWR
1 stop9h 22mFrontier
Deal found 12/7![Frontier logo]()
$274
This Expedia deal was found by Cheapflights users on 12/8. 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.
mié. 12/1710:30 pmEWR - STL
1 stop12h 10mFrontier
jue. 12/1810:42 amSTL - EWR
1 stop9h 53mFrontier
Deal found 12/8![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 12/8. 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.
lun. 12/1511:05 amEWR - STL
1 stop12h 28mMultiple Airlines
mié. 12/173:30 pmSTL - EWR
2 stops8h 40mMultiple Airlines
Deal found 12/8![Multiple Airlines logo]()
$277
This Frontier deal was found by Cheapflights users on 12/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/125:45 amIAD - STL
1 stop5h 02mFrontier
lun. 12/1510:47 amSTL - IAD
1 stop11h 18mFrontier
Deal found 12/7![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 12/8. 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.
mié. 12/175:59 amEWR - STL
1 stop28h 41mMultiple Airlines
jue. 12/184:27 pmSTL - EWR
1 stop7h 02mMultiple Airlines
Deal found 12/8![Multiple Airlines logo]()
$283
Find flight deals from Pennsylvania to Missouri
Keep the following information in mind while searching for Pennsylvania to Missouri flight deals. Data was last updated diciembre 9, 2025.
Most accurate provider | Gotogate 3 stars |
|---|---|
Most trusted provider | Gotogate 3 stars |
Round-trip from | $128 (Priceline) |
One-way from | $48 (Trip.com) |
Popular in | May |
Cheapest in | August |
Average price | $452 |
Good round-trip deal | $348 or less |
Good one-way deal | $197 or less |
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 diciembre 9, 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
NewarkKansas City
EWR - MCI
EWRMCI
Newark
vie. 1/23
6:00 am-11:50 am
1 stop6h 50m
Kansas City
vie. 1/30
12:45 pm-1:08 am
1 stop11h 23m
$203
NewarkKansas City
EWR - MCI
EWRMCI
Newark
vie. 1/9
5:00 am-4:09 pm
1 stop12h 09m
Kansas City
mar. 1/13
5:04 pm-1:13 am
2 stops31h 09m
$229
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
sáb. 2/14
3:40 pm-11:35 pm
2 stops8h 55m
Lambert-St Louis
mar. 2/17
8:20 am-1:00 pm
1 stop3h 40m
$256
Washington, D.C.St. Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
jue. 1/22
8:40 am-10:13 am
Nonstop2h 33m
Lambert-St Louis
sáb. 1/24
12:44 pm-3:55 pm
Nonstop2h 11m
$265
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
sáb. 1/17
12:45 pm-8:10 pm
2 stops8h 25m
Lambert-St Louis
sáb. 1/24
10:30 am-7:30 pm
2 stops8h 00m
$265
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
lun. 1/12
6:45 pm-8:15 pm
Nonstop2h 30m
Lambert-St Louis
mar. 1/20
10:15 am-3:25 pm
1 stop4h 10m
$271
Washington, D.C.St. Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
sáb. 2/7
5:50 pm-7:27 pm
Nonstop2h 37m
Lambert-St Louis
lun. 2/9
9:57 am-4:00 pm
1 stop5h 03m
$275
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
jue. 1/15
12:00 pm-1:35 pm
Nonstop2h 35m
Lambert-St Louis
mié. 1/21
11:30 am-8:35 pm
1 stop8h 05m
$275
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
vie. 1/9
6:45 pm-8:15 pm
Nonstop2h 30m
Lambert-St Louis
mar. 1/13
1:05 pm-4:00 pm
Nonstop1h 55m
$276
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
mié. 1/21
7:45 am-12:29 pm
1 stop5h 44m
Lambert-St Louis
dom. 1/25
7:00 am-10:37 am
Nonstop2h 37m
$277
Showing 1-10 of 60 results
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, February is the cheapest month in which you can book a flight from Pennsylvania to Missouri (average of $128). Flying from Pennsylvania to Missouri 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 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 diciembre 9, 2025.
It’s optimal to fly from Pennsylvania to Missouri in the evening. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight at noon.
What is the cheapest day to fly from Pennsylvania to Missouri?
Use this chart to determine the cheapest time to fly round-trip from Pennsylvania to Missouri. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Pennsylvania to Missouri flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Pennsylvania to Missouri
Explore weekly flight availability from Pennsylvania to Missouri. 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 diciembre 9, 2025.
The most flights from USPA to USMO are scheduled on a Monday (10 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).
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 diciembre 9, 2025.
Read through reviews of airlines operating flights from Pennsylvania to Missouri, such as Southwest, Delta, and United Airlines. 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.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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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.
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 diciembre 9, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$95 | Average$303 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$130 | Average$246 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$171 | Average$406 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$219 | Average$365 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$241 | Average$408 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$248 | Average$423 | FlexibilityNo cancel fee | On-time69% |