$66+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHL
Sep 19 — Sep 261
Round-trip
1 adult, Economy
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Find cheap flights from Missouri to Pennsylvania with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 August 20, 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 August 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 11/910:35 am -
1 stop20h 01m
Wed 11/115:28 pm -
1 stop17h 12m
Deal found 8/18![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/266:35 pm -
1 stop11h 46m
Mon 11/212:35 pm -
1 stop6h 05m
Deal found 8/19![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/142:29 pm -
1 stop26h 45m
Mon 9/218:41 am -
1 stop5h 29m
Deal found 8/17![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/252:29 pm -
1 stop15h 47m
Mon 9/288:41 am -
1 stop5h 29m
Deal found 8/19![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/282:29 pm -
1 stop15h 47m
Tue 10/65:32 pm -
1 stop20h 38m
Deal found 8/19![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/282:29 pm -
1 stop15h 47m
Wed 9/308:41 am -
1 stop5h 29m
Deal found 8/18![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/252:29 pm -
1 stop15h 47m
Mon 10/128:30 am -
1 stop10h 10m
Deal found 8/18![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/96:35 pm -
1 stop22h 40m
Mon 10/128:30 am -
1 stop10h 10m
Deal found 8/16![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/252:29 pm -
1 stop15h 47m
Tue 9/2912:40 pm -
1 stop25h 30m
Deal found 8/16![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 10/96:35 pm -
1 stop22h 40m
Thu 10/156:03 pm -
1 stop24h 37m
Deal found 8/18![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 10/22:29 pm -
1 stop15h 47m
Tue 10/65:32 pm -
1 stop20h 38m
Deal found 8/18![Frontier logo]()
$156
This Orbitz deal was found by Cheapflights users on 8/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop7h 33m
Mon 11/210:29 pm -
1 stop12h 11m
Deal found 8/15![Frontier logo]()
$198
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 August 20, 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 August 20, 2026.
This Delta deal was found by Cheapflights users on 8/19. 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 10/136:05 pm -
1 stop4h 11m
Mon 10/197:45 pm -
1 stop5h 09m
Deal found 8/19![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Mon 10/267:30 am -
1 stop5h 05m
Thu 10/298:40 am -
Nonstop2h 32m
Deal found 8/19![United Airlines logo]()
$240
This Southwest deal was found by Cheapflights users on 8/19. 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 10/93:55 pm -
Nonstop2h 00m
Mon 10/126:05 am -
1 stop5h 55m
Deal found 8/19![Southwest logo]()
$246
This Southwest deal was found by Cheapflights users on 8/17. 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 10/101:45 pm -
1 stop4h 15m
Mon 10/128:05 pm -
1 stop5h 30m
Deal found 8/17![Southwest logo]()
$256
This Delta deal was found by Cheapflights users on 8/19. 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 9/256:54 pm -
1 stop4h 47m
Mon 9/287:17 pm -
1 stop5h 25m
Deal found 8/19![Delta logo]()
$256
This United Airlines deal was found by Cheapflights users on 8/16. 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 11/148:00 am -
Nonstop2h 10m
Thu 11/198:40 am -
Nonstop2h 32m
Deal found 8/16![United Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 8/17. 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 10/165:50 pm -
1 stop4h 10m
Mon 10/197:55 am -
1 stop5h 20m
Deal found 8/17![Southwest logo]()
$256
This United Airlines deal was found by Cheapflights users on 8/15. 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 10/79:30 am -
Nonstop2h 38m
Wed 10/147:29 pm -
Nonstop2h 40m
Deal found 8/15![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 8/19. 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 9/286:42 pm -
1 stop4h 59m
Thu 10/112:26 pm -
1 stop6h 11m
Deal found 8/19![Delta logo]()
$281
This Southwest deal was found by Cheapflights users on 8/19. 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 10/276:40 pm -
Nonstop2h 05m
Wed 10/286:25 am -
Nonstop2h 20m
Deal found 8/19![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 8/18. 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 10/2112:35 pm -
1 stop6h 39m
Sat 10/243:03 pm -
1 stop7h 14m
Deal found 8/18![Delta logo]()
$281
This Southwest deal was found by Cheapflights users on 8/19. 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.
Mon 10/267:50 pm -
Nonstop2h 20m
Mon 11/27:25 pm -
Nonstop2h 35m
Deal found 8/19![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/1912:20 pm -
Nonstop2h 30m
Mon 9/215:15 pm -
1 stop5h 32m
Deal found 8/19![United Airlines logo]()
$284
This Alaska Airlines deal was found by Cheapflights users on 8/16. 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.
Fri 10/94:42 pm -
2 stops22h 02m
Mon 10/128:25 pm -
1 stop28h 34m
Deal found 8/16![Alaska Airlines logo]()
$698
This Delta deal was found by Cheapflights users on 8/19. 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 9/95:30 pm -
1 stop6h 11m
Wed 9/168:08 am -
1 stop7h 58m
Deal found 8/19![Delta logo]()
$281
This Southwest deal was found by Cheapflights users on 8/18. 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 9/86:40 pm -
Nonstop2h 15m
Thu 9/106:20 am -
Nonstop2h 15m
Deal found 8/18![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/246:00 am -
1 stop6h 59m
Tue 9/295:55 pm -
Nonstop2h 26m
Deal found 8/19![United Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 8/18. 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 10/161:02 pm -
Nonstop2h 28m
Thu 10/226:25 pm -
Nonstop2h 49m
Deal found 8/18![Delta logo]()
$291
This Southwest deal was found by Cheapflights users on 8/18. 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 10/712:15 pm -
1 stop4h 45m
Fri 10/96:25 am -
Nonstop2h 20m
Deal found 8/18![Southwest logo]()
$278
This United Airlines deal was found by Cheapflights users on 8/16. 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 10/158:00 am -
1 stop6h 42m
Mon 10/193:30 pm -
1 stop6h 51m
Deal found 8/16![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 8/16. 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 11/186:00 am -
1 stop5h 13m
Mon 11/236:00 am -
1 stop6h 15m
Deal found 8/16![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 8/19. 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.
Mon 10/57:50 pm -
Nonstop2h 20m
Fri 10/95:10 pm -
1 stop6h 35m
Deal found 8/19![Southwest logo]()
$278
This United Airlines deal was found by Cheapflights users on 8/15. 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 11/141:00 pm -
Nonstop2h 09m
Mon 11/166:11 am -
1 stop6h 59m
Deal found 8/15![United Airlines logo]()
$326
This Delta deal was found by Cheapflights users on 8/18. 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 9/155:59 pm -
1 stop4h 16m
Tue 9/221:26 pm -
1 stop5h 14m
Deal found 8/18![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 8/18. 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 10/38:25 am -
1 stop6h 30m
Wed 10/78:45 am -
Nonstop2h 40m
Deal found 8/18![Southwest logo]()
$287
This United Airlines deal was found by Cheapflights users on 8/16. 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 12/48:00 am -
1 stop5h 03m
Tue 12/85:45 pm -
Nonstop2h 47m
Deal found 8/16![United Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 8/18. 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 9/910:00 am -
Nonstop2h 27m
Fri 9/116:00 pm -
1 stop6h 42m
Deal found 8/18![Delta logo]()
$301
This Southwest deal was found by Cheapflights users on 8/16. 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 9/1110:10 am -
2 stops6h 50m
Mon 9/146:40 pm -
1 stop4h 30m
Deal found 8/16![Southwest logo]()
$295
This Delta deal was found by Cheapflights users on 8/15. 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 9/291:01 pm -
Nonstop2h 29m
Wed 10/146:00 am -
1 stop4h 44m
Deal found 8/15![Delta logo]()
$301
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Mon 9/216:00 am -
1 stop4h 49m
Wed 9/235:45 pm -
Nonstop2h 29m
Deal found 8/17![United Airlines logo]()
$333
Last-minute flights from Missouri to PennsylvaniaDiscover last-minute flight deals from Missouri to Pennsylvania. Data last updated August 20, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Pennsylvania. Data last updated August 20, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/112:29 pm -
1 stop15h 47m
Wed 9/168:41 am -
1 stop5h 29m
Deal found 8/18![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/112:29 pm -
1 stop26h 45m
Tue 9/155:32 pm -
1 stop20h 38m
Deal found 8/18![Frontier logo]()
$167
This CheapOair deal was found by Cheapflights users on 8/18. 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.
Fri 9/115:19 pm -
1 stop6h 42m
Thu 9/175:55 am -
1 stop11h 29m
Deal found 8/18![Frontier logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/142:29 pm -
1 stop26h 45m
Mon 9/218:41 am -
1 stop5h 29m
Deal found 8/17![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/162:29 pm -
1 stop7h 49m
Wed 9/238:41 am -
1 stop5h 29m
Deal found 8/19![Frontier logo]()
$157
This Frontier deal was found by Cheapflights users on 8/16. 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.
Thu 9/175:19 pm -
1 stop5h 50m
Mon 9/218:41 am -
1 stop5h 29m
Deal found 8/16![Frontier logo]()
$178
This Frontier deal was found by Cheapflights users on 8/17. 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.
Thu 9/175:19 pm -
1 stop6h 42m
Thu 9/245:55 am -
1 stop12h 59m
Deal found 8/17![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/252:29 pm -
1 stop15h 47m
Mon 9/288:41 am -
1 stop5h 29m
Deal found 8/19![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/252:29 pm -
1 stop15h 47m
Mon 10/128:30 am -
1 stop10h 10m
Deal found 8/18![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/252:29 pm -
1 stop15h 47m
Tue 9/2912:40 pm -
1 stop25h 30m
Deal found 8/16![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/282:29 pm -
1 stop15h 47m
Tue 10/65:32 pm -
1 stop20h 38m
Deal found 8/19![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/282:29 pm -
1 stop15h 47m
Wed 9/308:41 am -
1 stop5h 29m
Deal found 8/18![Frontier logo]()
$147
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 August 20, 2026.
Search for one-way flight options from Missouri to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/212:29 pm -
1 stop15h 47m
Deal found 8/19![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/126:35 pm -
1 stop11h 46m
Deal found 8/19![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 11/510:35 am -
1 stop6h 01m
Deal found 8/19![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 11/1610:35 am -
1 stop20h 01m
Deal found 8/16![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/142:29 pm -
1 stop15h 47m
Deal found 8/16![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/282:29 pm -
1 stop25h 49m
Deal found 8/16![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/166:35 pm -
1 stop11h 46m
Deal found 8/19![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 9/182:29 pm -
1 stop15h 47m
Deal found 8/20![Frontier logo]()
$74
This Trip.com deal was found by Cheapflights users on 8/15. 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.
Thu 11/510:35 am -
1 stop6h 40m
Deal found 8/15![Frontier logo]()
$78
This Trip.com deal was found by Cheapflights users on 8/17. 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.
Tue 11/1710:35 am -
1 stop6h 40m
Deal found 8/17![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 11/1210:35 am -
1 stop20h 01m
Deal found 8/16![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/232:29 pm -
1 stop8h 41m
Deal found 8/17![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 August 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $135 (Kiwi.com) |
One-way from | $66 (Kiwi.com) |
Popular in | March |
Cheapest in | February |
Average price | $419 |
Good round-trip deal | $309 or less |
Good one-way deal | $191 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 7,457,451 searches. Data last updated August 20, 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. LouisWashington, D.C.
STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl
STLIAD
Lambert-St Louis
Tue 10/13
6:05 pm-11:16 pm
1 stop4h 11m
Washington, D.C. Dulles Intl
Mon 10/19
7:45 pm-11:54 pm
1 stop5h 09m
$237
St. LouisWashington, D.C.
STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl
STLIAD
Lambert-St Louis
Mon 10/26
7:30 am-1:35 pm
1 stop5h 05m
Washington, D.C. Dulles Intl
Thu 10/29
8:40 am-10:12 am
Nonstop2h 32m
$240
St. LouisWashington, D.C.
STL Lambert-St Louis - DCA Washington, D.C. Reagan-National
STLDCA
Lambert-St Louis
Fri 10/9
3:55 pm-6:55 pm
Nonstop2h 00m
Washington, D.C. Reagan-National
Mon 10/12
6:05 am-11:00 am
1 stop5h 55m
$246
St. LouisWashington, D.C.
STL Lambert-St Louis - DCA Washington, D.C. Reagan-National
STLDCA
Lambert-St Louis
Sat 10/10
1:45 pm-7:00 pm
1 stop4h 15m
Washington, D.C. Reagan-National
Mon 10/12
8:05 pm-12:35 am
1 stop5h 30m
$256
St. LouisWashington, D.C.
STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl
STLIAD
Lambert-St Louis
Fri 9/25
6:54 pm-12:41 am
1 stop4h 47m
Washington, D.C. Dulles Intl
Mon 9/28
7:17 pm-11:42 pm
1 stop5h 25m
$256
St. LouisWashington, D.C.
STL Lambert-St Louis - DCA Washington, D.C. Reagan-National
STLDCA
Lambert-St Louis
Fri 10/16
5:50 pm-11:00 pm
1 stop4h 10m
Washington, D.C. Reagan-National
Mon 10/19
7:55 am-12:15 pm
1 stop5h 20m
$256
Quickest round-trip
St. LouisPhiladelphia
STL Lambert-St Louis - PHL Philadelphia
STLPHL
Lambert-St Louis
Tue 10/27
6:40 pm-9:45 pm
Nonstop2h 05m
Philadelphia
Wed 10/28
6:25 am-7:45 am
Nonstop2h 20m
$257
St. LouisPhiladelphia
STL Lambert-St Louis - PHL Philadelphia
STLPHL
Lambert-St Louis
Mon 10/26
7:50 pm-11:10 pm
Nonstop2h 20m
Philadelphia
Mon 11/2
7:25 pm-9:00 pm
Nonstop2h 35m
$257
St. LouisPhiladelphia
STL Lambert-St Louis - PHL Philadelphia
STLPHL
Lambert-St Louis
Tue 9/8
6:40 pm-9:55 pm
Nonstop2h 15m
Philadelphia
Thu 9/10
6:20 am-7:35 am
Nonstop2h 15m
$257
St. LouisWashington, D.C.
STL Lambert-St Louis - IAD Washington, D.C. Dulles Intl
STLIAD
Lambert-St Louis
Sat 11/14
8:00 am-11:10 am
Nonstop2h 10m
Washington, D.C. Dulles Intl
Thu 11/19
8:40 am-10:12 am
Nonstop2h 32m
$271
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-EWR
STL-IAD
STL-DCA
MCI-IAD
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-EWR
STL-IAD
STL-DCA
What is the cheapest month to book a flight from Missouri to Pennsylvania?
Currently, January is the cheapest month in which you can book a flight from Missouri to Pennsylvania (average of $374). Flying from Missouri to Pennsylvania in March is currently the most expensive (average of $464). 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 August 20, 2026.
It’s optimal to fly from Missouri to Pennsylvania in the evening. By choosing this option you can save up to 49% on the cost of your flight, compared to a flight at noon.
How much does it cost to fly round-trip from Missouri to Pennsylvania?
Airfare is below average for this route at the moment.
Missouri to Pennsylvania flights typically cost between $265 and $460 in November.The cheapest round-trip price found within the last 5 days was $135 on Frontier (Nov 9-Nov 11).
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 88 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 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 August 15, 2026.
Travelers seeking maximum savings on their Missouri to Pennsylvania flight should consider departing on Thursday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 August 20, 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.
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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 August 20, 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 5 airlines flying from Missouri to Pennsylvania
Discover the top 5 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 7,457,451 searches. Data last updated August 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$124 | Average$245 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$168 | Average$440 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$196 | Average$446 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$210 | Average$421 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$231 | Average$432 | FlexibilityNo cancel fee | On-time63% |