$63+ Cheap flights from Missouri to Pennsylvania
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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHL
Jun 6 — Jun 131
Round-trip
1 adult, Economy
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Cheapest flights from Missouri to PennsylvaniaExplore the most affordable flight options available from Missouri to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.
Explore the most affordable flight options available from Missouri to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 6/26:33 pm
STL
- EWR
1 stop5h 45m
Frontier
Wed 6/310:29 pm
EWR
- STL
1 stop20h 04m
Frontier
Deal found 5/4![Frontier logo]()
$124
This Priceline deal was found by Cheapflights users on 5/2. 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.
Sat 5/236:30 pm
STL
- PHL
1 stop10h 51m
Frontier
Tue 5/266:10 pm
PHL
- STL
1 stop6h 47m
Frontier
Deal found 5/2![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Thu 6/410:29 pm
EWR
- STL
1 stop11h 26m
Frontier
Deal found 5/6![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Tue 6/95:58 am
EWR
- STL
1 stop12h 32m
Frontier
Deal found 5/6![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Wed 6/1010:29 pm
EWR
- STL
1 stop20h 01m
Frontier
Deal found 5/6![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Tue 8/186:33 pm
STL
- EWR
1 stop5h 32m
Frontier
Sat 8/2210:29 pm
EWR
- STL
1 stop20h 01m
Frontier
Deal found 5/5![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/294:52 pm
STL
- EWR
1 stop7h 11m
Frontier
Tue 8/410:29 pm
EWR
- STL
1 stop11h 28m
Frontier
Deal found 5/6![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:33 pm
STL
- EWR
1 stop5h 45m
Frontier
Thu 6/45:55 am
EWR
- STL
1 stop28h 00m
Frontier
Deal found 5/2![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Wed 6/35:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Wed 6/1010:29 pm
EWR
- STL
1 stop20h 01m
Frontier
Deal found 5/5![Frontier logo]()
$168
This Expedia deal was found by Cheapflights users on 5/4. 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.
Thu 5/286:33 pm
STL
- PHL
1 stop11h 39m
Frontier
Mon 6/15:21 am
PHL
- STL
1 stop19h 36m
Frontier
Deal found 5/4![Frontier logo]()
$180
This Booking.com deal was found by Cheapflights users on 5/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:30 pm
STL
- PHL
1 stop10h 51m
Frontier
Fri 5/2910:40 am
PHL
- STL
1 stop10h 31m
Frontier
Deal found 5/3![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Thu 5/286:33 pm
STL
- EWR
1 stop5h 45m
Frontier
Mon 6/110:29 pm
EWR
- STL
1 stop20h 04m
Frontier
Deal found 5/4![Frontier logo]()
$181
Best flights from Missouri to PennsylvaniaDiscover carefully curated flight deals from Missouri to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 7, 2026.
Discover carefully curated flight deals from Missouri to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 7, 2026.
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:50 pm
STL
- PHL
Nonstop2h 10m
Southwest
Wed 6/107:25 am
PHL
- STL
1 stop6h 10m
Southwest
Deal found 5/6![Southwest logo]()
$287
This Delta deal was found by Cheapflights users on 5/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:59 pm
STL
- JFK
1 stop7h 17m
Delta
Wed 6/246:00 am
JFK
- STL
1 stop4h 46m
Delta
Deal found 5/2![Delta logo]()
$293
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Thu 7/21:13 pm
STL
- IAD
1 stop4h 49m
United Airlines
Tue 7/75:42 pm
IAD
- STL
1 stop4h 44m
United Airlines
Deal found 5/5![United Airlines logo]()
$306
This KAYAK deal was found by Cheapflights users on 5/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:25 pm
STL
- IAD
1 stop6h 30m
American Airlines
Wed 8/266:10 am
IAD
- STL
1 stop4h 22m
American Airlines
Deal found 5/2![American Airlines logo]()
$331
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:15 am
MCI
- DCA
1 stop4h 00m
Southwest
Mon 6/88:30 pm
DCA
- MCI
Nonstop2h 55m
Southwest
Deal found 5/6![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 5/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/271:05 pm
STL
- LGA
Nonstop2h 33m
Delta
Thu 5/2810:35 am
LGA
- STL
Nonstop2h 48m
Delta
Deal found 5/2![Delta logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 5/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:55 pm
MCI
- JFK
1 stop10h 21m
Alaska Airlines
Wed 6/34:15 pm
JFK
- MCI
1 stop32h 34m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$603
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Tue 7/146:01 am
STL
- EWR
Nonstop2h 29m
United Airlines
Sat 7/1810:17 pm
EWR
- STL
Nonstop2h 27m
United Airlines
Deal found 5/5![United Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 5/5. 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.
Tue 6/165:55 pm
STL
- LGA
1 stop4h 00m
Southwest
Tue 6/236:30 am
LGA
- STL
Nonstop2h 35m
Southwest
Deal found 5/5![Southwest logo]()
$299
This Delta deal was found by Cheapflights users on 5/4. 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.
Tue 9/295:00 pm
STL
- LGA
Nonstop2h 33m
Delta
Sat 10/311:00 am
LGA
- STL
1 stop5h 57m
Delta
Deal found 5/4![Delta logo]()
$306
This United Airlines deal was found by Cheapflights users on 5/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/51:13 pm
STL
- IAD
1 stop4h 49m
United Airlines
Sat 6/65:55 pm
IAD
- STL
Nonstop2h 31m
United Airlines
Deal found 5/6![United Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 5/4. 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.
Tue 6/235:55 pm
STL
- LGA
1 stop4h 00m
Southwest
Wed 7/156:30 am
LGA
- STL
Nonstop2h 35m
Southwest
Deal found 5/4![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 5/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
STL
- LGA
1 stop5h 23m
United Airlines
Wed 6/105:25 pm
LGA
- STL
1 stop4h 56m
United Airlines
Deal found 5/6![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 5/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:42 pm
STL
- JFK
1 stop6h 27m
Delta
Mon 9/213:10 pm
JFK
- STL
Nonstop2h 45m
Delta
Deal found 5/6![Delta logo]()
$324
This Southwest deal was found by Cheapflights users on 5/5. 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.
Wed 6/32:10 pm
MCI
- DCA
2 stops7h 05m
Southwest
Mon 6/86:55 pm
DCA
- MCI
1 stop5h 20m
Southwest
Deal found 5/5![Southwest logo]()
$309
This United Airlines deal was found by Cheapflights users on 5/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:00 am
STL
- EWR
1 stop5h 57m
United Airlines
Wed 8/199:59 pm
EWR
- STL
Nonstop2h 38m
United Airlines
Deal found 5/6![United Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 5/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:13 pm
STL
- JFK
Nonstop2h 39m
Delta
Wed 10/143:10 pm
JFK
- STL
Nonstop2h 56m
Delta
Deal found 5/6![Delta logo]()
$341
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:40 am
STL
- LGA
Nonstop2h 20m
Southwest
Wed 8/191:25 pm
LGA
- STL
1 stop5h 30m
Southwest
Deal found 5/6![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 5/2. 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.
Sat 5/306:00 am
STL
- EWR
Nonstop2h 29m
United Airlines
Sat 6/610:07 pm
EWR
- STL
Nonstop2h 28m
United Airlines
Deal found 5/2![United Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 5/4. 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.
Fri 10/24:13 pm
STL
- JFK
Nonstop2h 28m
Delta
Wed 10/73:10 pm
JFK
- STL
Nonstop2h 56m
Delta
Deal found 5/4![Delta logo]()
$344
This Southwest deal was found by Cheapflights users on 5/5. 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.
Fri 5/295:50 am
STL
- LGA
Nonstop2h 20m
Southwest
Mon 6/18:55 am
LGA
- STL
Nonstop2h 50m
Southwest
Deal found 5/5![Southwest logo]()
$317
This United Airlines deal was found by Cheapflights users on 5/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/412:30 pm
MCI
- IAD
Nonstop2h 33m
United Airlines
Mon 6/85:43 pm
IAD
- MCI
1 stop6h 30m
United Airlines
Deal found 5/3![United Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 5/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:30 am
STL
- EWR
1 stop4h 29m
Delta
Sun 7/56:00 am
EWR
- STL
1 stop4h 32m
Delta
Deal found 5/2![Delta logo]()
$351
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/208:35 am
MCI
- DCA
Nonstop2h 20m
Southwest
Wed 6/247:55 pm
DCA
- MCI
1 stop4h 30m
Southwest
Deal found 5/3![Southwest logo]()
$324
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Sat 8/16:00 am
STL
- EWR
1 stop5h 06m
United Airlines
Sat 8/110:17 pm
EWR
- STL
Nonstop2h 27m
United Airlines
Deal found 5/4![United Airlines logo]()
$338
This Delta deal was found by Cheapflights users on 5/5. 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.
Mon 6/154:04 pm
MCI
- DCA
1 stop6h 22m
Delta
Wed 6/1712:17 pm
DCA
- MCI
1 stop5h 18m
Delta
Deal found 5/5![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:30 am
STL
- LGA
1 stop7h 20m
Southwest
Sat 5/306:00 am
LGA
- STL
Nonstop2h 45m
Southwest
Deal found 5/6![Southwest logo]()
$325
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Tue 6/165:45 pm
MCI
- EWR
1 stop5h 14m
United Airlines
Tue 6/239:43 pm
EWR
- MCI
Nonstop3h 16m
United Airlines
Deal found 5/4![United Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 5/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1510:21 am
MCI
- IAD
1 stop7h 21m
Delta
Wed 6/176:05 am
IAD
- MCI
1 stop4h 43m
Delta
Deal found 5/6![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:25 am
MCI
- DCA
Nonstop2h 25m
Southwest
Tue 9/155:40 pm
DCA
- MCI
1 stop5h 50m
Southwest
Deal found 5/3![Southwest logo]()
$335
Last-minute flights from Missouri to PennsylvaniaDiscover last-minute flight deals from Missouri to Pennsylvania. Data last updated May 7, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Pennsylvania. Data last updated May 7, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 5/2. 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.
Sat 5/236:30 pm
STL
- PHL
1 stop10h 51m
Frontier
Tue 5/266:10 pm
PHL
- STL
1 stop6h 47m
Frontier
Deal found 5/2![Frontier logo]()
$140
This Booking.com deal was found by Cheapflights users on 5/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:30 pm
STL
- PHL
1 stop10h 51m
Frontier
Fri 5/2910:40 am
PHL
- STL
1 stop10h 31m
Frontier
Deal found 5/3![Frontier logo]()
$181
This Expedia deal was found by Cheapflights users on 5/4. 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.
Thu 5/286:33 pm
STL
- PHL
1 stop11h 39m
Frontier
Sun 5/315:21 am
PHL
- STL
1 stop19h 36m
Frontier
Deal found 5/4![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Thu 5/286:33 pm
STL
- EWR
1 stop5h 45m
Frontier
Mon 6/110:29 pm
EWR
- STL
1 stop20h 04m
Frontier
Deal found 5/4![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 6/26:33 pm
STL
- EWR
1 stop5h 45m
Frontier
Wed 6/310:29 pm
EWR
- STL
1 stop20h 04m
Frontier
Deal found 5/4![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:33 pm
STL
- EWR
1 stop5h 45m
Frontier
Thu 6/45:55 am
EWR
- STL
1 stop28h 00m
Frontier
Deal found 5/2![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Thu 6/410:29 pm
EWR
- STL
1 stop11h 26m
Frontier
Deal found 5/6![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Wed 6/35:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Wed 6/1010:29 pm
EWR
- STL
1 stop20h 01m
Frontier
Deal found 5/5![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Wed 6/35:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Sat 6/610:29 pm
EWR
- STL
1 stop20h 04m
Frontier
Deal found 5/5![Frontier logo]()
$184
This Priceline deal was found by Cheapflights users on 5/4. 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.
Wed 6/34:19 pm
STL
- PHL
1 stop6h 10m
Frontier
Wed 6/105:10 pm
PHL
- STL
1 stop7h 39m
Frontier
Deal found 5/4![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Tue 6/95:58 am
EWR
- STL
1 stop12h 32m
Frontier
Deal found 5/6![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Wed 6/1010:29 pm
EWR
- STL
1 stop20h 01m
Frontier
Deal found 5/6![Frontier logo]()
$151
One-way flights from Missouri to PennsylvaniaSearch for one-way flight options from Missouri to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
Search for one-way flight options from Missouri to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Thu 6/46:33 pm
STL
- IAD
1 stop14h 39m
Frontier
Deal found 5/4![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 6/26:33 pm
STL
- EWR
1 stop5h 45m
Frontier
Deal found 5/4![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Wed 5/275:27 pm
STL
- IAD
1 stop21h 54m
Frontier
Deal found 5/4![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Mon 6/15:27 pm
STL
- EWR
1 stop27h 02m
Frontier
Deal found 5/4![Frontier logo]()
$65
This WAYA deal was found by Cheapflights users on 5/5. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:27 pm
STL
- IAD
1 stop4h 42m
Frontier
Deal found 5/5![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Tue 5/266:33 pm
STL
- IAD
1 stop27h 36m
Frontier
Deal found 5/5![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Sat 5/305:27 pm
STL
- IAD
1 stop15h 45m
Frontier
Deal found 5/4![Frontier logo]()
$71
This Kissandfly.com deal was found by Cheapflights users on 5/3. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:33 pm
STL
- EWR
1 stop5h 45m
Frontier
Deal found 5/3![Frontier logo]()
$72
This Frontier deal was found by Cheapflights users on 5/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:33 pm
STL
- PHL
1 stop11h 39m
Frontier
Deal found 5/2![Frontier logo]()
$76
This Trip.com deal was found by Cheapflights users on 5/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/195:06 pm
STL
- EWR
1 stop6h 59m
Frontier
Deal found 5/2![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:06 pm
STL
- EWR
1 stop27h 23m
Frontier
Deal found 5/3![Frontier logo]()
$79
This Trip.com deal was found by Cheapflights users on 5/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:27 pm
STL
- EWR
1 stop6h 51m
Frontier
Deal found 5/4![Frontier logo]()
$80
Find flight deals from Missouri to Pennsylvania
Keep the following information in mind while searching for Missouri to Pennsylvania flight deals. Data was last updated May 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $124 (Kiwi.com) |
One-way from | $63 (Kiwi.com) |
Popular in | November |
Cheapest in | August |
Average price | $395 |
Good round-trip deal | $306 or less |
Good one-way deal | $138 or less |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 7, 2026.
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
Cheapest round-trip
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Wed 6/3
6:50 pm-10:00 pm
Nonstop2h 10m
Philadelphia
Wed 6/10
7:25 am-12:35 pm
1 stop6h 10m
$287
St. LouisNew York
STL - JFK
STLJFK
Lambert-St Louis
Wed 6/17
1:59 pm-10:16 pm
1 stop7h 17m
New York John F Kennedy Intl
Wed 6/24
6:00 am-9:46 am
1 stop4h 46m
$293
Kansas CityWashington, D.C.
MCI - DCA
MCIDCA
Kansas City
Thu 6/4
6:15 am-11:15 am
1 stop4h 00m
Washington, D.C. Reagan-National
Mon 6/8
8:30 pm-10:25 pm
Nonstop2h 55m
$293
St. LouisNew York
STL - LGA
STLLGA
Lambert-St Louis
Wed 5/27
1:05 pm-4:38 pm
Nonstop2h 33m
New York LaGuardia
Thu 5/28
10:35 am-12:23 pm
Nonstop2h 48m
$294
St. LouisNew York
STL - LGA
STLLGA
Lambert-St Louis
Tue 6/16
5:55 pm-10:55 pm
1 stop4h 00m
New York LaGuardia
Tue 6/23
6:30 am-8:05 am
Nonstop2h 35m
$299
St. LouisNew York
STL - LGA
STLLGA
Lambert-St Louis
Tue 6/23
5:55 pm-10:55 pm
1 stop4h 00m
New York LaGuardia
Wed 7/15
6:30 am-8:05 am
Nonstop2h 35m
$302
St. LouisWashington, D.C.
STL - IAD
STLIAD
Lambert-St Louis
Thu 7/2
1:13 pm-7:02 pm
1 stop4h 49m
Washington, D.C. Dulles Intl
Tue 7/7
5:42 pm-9:26 pm
1 stop4h 44m
$306
Quickest round-trip
St. LouisNewark
STL - EWR
STLEWR
Lambert-St Louis
Tue 7/14
6:01 am-9:30 am
Nonstop2h 29m
Newark
Sat 7/18
10:17 pm-11:44 pm
Nonstop2h 27m
$306
St. LouisNew York
STL - LGA
STLLGA
Lambert-St Louis
Tue 9/29
5:00 pm-8:33 pm
Nonstop2h 33m
New York LaGuardia
Sat 10/3
11:00 am-3:57 pm
1 stop5h 57m
$306
Kansas CityWashington, D.C.
MCI - DCA
MCIDCA
Kansas City
Wed 6/3
2:10 pm-10:15 pm
2 stops7h 05m
Washington, D.C. Reagan-National
Mon 6/8
6:55 pm-11:15 pm
1 stop5h 20m
$309
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Missouri to Pennsylvania
Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Missouri with our price prediction graph.
STL-PHL
STL-JFK
STL-IAD
MCI-DCA
STL-LGA
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 Missouri to Pennsylvania
USMO-USPA
STL-PHL
STL-JFK
STL-IAD
MCI-DCA
How far ahead should I book a flight from Missouri to Pennsylvania?
To ensure you get the cheapest price possible for a flight from Missouri to Pennsylvania, you should look to book at least 64 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Missouri to Pennsylvania?
Currently, October is the cheapest month in which you can book a flight from Missouri to Pennsylvania (average of $76). Flying from Missouri to Pennsylvania in June is currently the most expensive (average of $196). 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 MO to PA?
Find hourly flight availability from Missouri to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 7, 2026.
It’s optimal to fly from Missouri to Pennsylvania in the evening. By choosing this option you can save up to 58% on the cost of your flight, compared to a flight at noon.
What is the cheapest day to fly from Missouri to Pennsylvania?
Use this chart to determine the cheapest time to fly round-trip from Missouri to Pennsylvania. Price data was last updated on May 2, 2026.
Travelers seeking maximum savings on their Missouri to Pennsylvania flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Missouri to Pennsylvania
Explore weekly flight availability from Missouri to Pennsylvania. 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 May 7, 2026.
The most flights from USMO to USPA are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Missouri to Pennsylvania?
Reviews of airlines servicing Pennsylvania
Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated May 7, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Missouri to Pennsylvania have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Missouri to Pennsylvania. 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 Missouri to Pennsylvania
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Pennsylvania by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Missouri to Pennsylvania by cabin class
Find flights from Missouri to Pennsylvania, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Missouri and Pennsylvania flights
Browse other Missouri and Pennsylvania flight options. Last updated on May 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Pennsylvania
Find the right flight back to Missouri after your stay in Pennsylvania
Missouri to Pennsylvania flights
Consider these flights traveling from Missouri to Pennsylvania.
Top 6 airlines flying from Missouri to Pennsylvania
Discover the top 6 airlines that operate flights from Missouri to Pennsylvania. 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 May 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$82 | Average$213 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$119 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$204 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$205 | Average$404 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$208 | Average$419 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$235 | Average$425 | FlexibilityNo cancel fee | On-time63% |