$99+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STL
Sep 21 — Sep 281
Round-trip
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 August 22, 2026.
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 August 22, 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.
Wed 10/215:13 pm -
1 stop4h 38m
Thu 10/227:20 pm -
1 stop4h 22m
Deal found 8/19![Delta logo]()
$237
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 10/216:59 am -
1 stop4h 52m
Mon 10/266:24 pm -
1 stop3h 43m
Deal found 8/19![Delta logo]()
$237
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:20 am -
1 stop12h 02m
Mon 9/74:23 pm -
1 stop16h 44m
Deal found 8/17![Frontier logo]()
$238
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:00 am -
1 stop13h 17m
Mon 9/218:10 pm -
1 stop24h 49m
Deal found 8/19![Frontier logo]()
$238
This Frontier deal was found by Cheapflights users on 8/21. 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.
Sat 9/58:59 am -
1 stop9h 51m
Mon 9/142:29 pm -
1 stop8h 41m
Deal found 8/21![Frontier logo]()
$239
This Travelocity deal was found by Cheapflights users on 8/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 pm -
1 stop26h 17m
Mon 9/148:10 pm -
1 stop19h 49m
Deal found 8/21![Frontier logo]()
$239
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 10/298:40 am -
Nonstop2h 32m
Mon 11/27:30 am -
1 stop5h 05m
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.
Sat 10/36:55 am -
2 stops10h 10m
Sat 10/101:20 pm -
1 stop7h 10m
Deal found 8/19![Southwest logo]()
$242
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.
Fri 10/97:50 am -
1 stop10h 50m
Mon 10/126:35 pm -
1 stop21h 43m
Deal found 8/17![Frontier logo]()
$243
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 pm -
1 stop22h 24m
Fri 10/168:00 pm -
1 stop19h 56m
Deal found 8/20![Frontier logo]()
$243
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:59 am -
1 stop9h 51m
Mon 9/74:23 pm -
1 stop16h 44m
Deal found 8/18![Frontier logo]()
$245
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:20 am -
1 stop4h 37m
Thu 9/108:40 am -
Nonstop2h 14m
Deal found 8/18![United Airlines logo]()
$246
Best flights from Pennsylvania to MissouriDiscover carefully curated flight deals from Pennsylvania to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from Pennsylvania to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This Delta deal was found by Cheapflights users on 8/21. 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.
Sat 9/196:00 am -
1 stop4h 34m
Sat 9/261:40 pm -
1 stop5h 34m
Deal found 8/21![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/21. 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 10/126:05 am -
1 stop5h 55m
Fri 10/163:55 pm -
Nonstop2h 00m
Deal found 8/21![Southwest logo]()
$246
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/308:20 am -
Nonstop2h 21m
Fri 10/210:27 am -
1 stop4h 34m
Deal found 8/21![United Airlines logo]()
$265
This Delta deal was found by Cheapflights users on 8/21. 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 10/278:13 am -
1 stop6h 07m
Thu 10/296:00 am -
1 stop4h 32m
Deal found 8/21![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/21. 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 9/302:40 pm -
Nonstop2h 15m
Fri 10/26:10 pm -
1 stop4h 20m
Deal found 8/21![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 8/21. 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 10/2110:57 am -
1 stop3h 56m
Sat 10/2410:31 am -
1 stop4h 45m
Deal found 8/21![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/285:58 pm -
Nonstop2h 48m
Wed 9/306:00 am -
1 stop4h 55m
Deal found 8/21![United Airlines logo]()
$271
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:15 am -
Nonstop2h 20m
Fri 9/1110:10 am -
2 stops6h 50m
Deal found 8/20![Southwest logo]()
$251
This Delta deal was found by Cheapflights users on 8/21. 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 10/206:59 am -
1 stop4h 52m
Mon 10/266:24 pm -
1 stop3h 43m
Deal found 8/21![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.
Tue 9/156:15 am -
1 stop5h 10m
Wed 9/165:08 pm -
1 stop6h 36m
Deal found 8/19![United Airlines logo]()
$281
This Southwest deal was found by Cheapflights users on 8/21. 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 9/256:55 am -
1 stop4h 20m
Sat 9/261:15 pm -
2 stops7h 40m
Deal found 8/21![Southwest logo]()
$261
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:55 pm -
Nonstop3h 00m
Sun 11/156:40 pm -
1 stop4h 50m
Deal found 8/18![United Airlines logo]()
$304
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 11/36:00 am -
1 stop5h 31m
Thu 11/52:39 pm -
1 stop4h 35m
Deal found 8/18![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.
Sat 10/36:00 am -
1 stop8h 40m
Tue 10/61:25 pm -
2 stops8h 00m
Deal found 8/18![Southwest logo]()
$302
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:10 am -
1 stop4h 19m
Fri 9/186:54 pm -
1 stop4h 47m
Deal found 8/18![Delta logo]()
$285
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.
Sat 9/55:44 pm -
Nonstop2h 48m
Sat 9/125:39 pm -
Nonstop2h 39m
Deal found 8/17![United Airlines logo]()
$319
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.
Sat 11/219:00 am -
Nonstop3h 05m
Mon 11/235:35 pm -
Nonstop2h 20m
Deal found 8/19![Southwest logo]()
$305
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:25 am -
Nonstop2h 14m
Fri 9/188:00 am -
1 stop4h 55m
Deal found 8/20![United Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 8/21. 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 10/276:00 am -
1 stop6h 30m
Fri 10/305:39 pm -
1 stop4h 37m
Deal found 8/21![Delta logo]()
$294
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:30 am -
1 stop7h 45m
Fri 9/183:35 pm -
Nonstop2h 20m
Deal found 8/20![Southwest logo]()
$315
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 11/45:30 pm -
1 stop5h 29m
Sat 11/72:25 pm -
1 stop7h 08m
Deal found 8/19![Delta logo]()
$297
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.
Wed 9/91:00 pm -
Nonstop2h 50m
Mon 9/1411:10 am -
Nonstop2h 30m
Deal found 8/17![United Airlines logo]()
$341
This Southwest deal was found by Cheapflights users on 8/21. 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 9/95:45 pm -
Nonstop2h 50m
Sat 9/1210:10 am -
Nonstop2h 20m
Deal found 8/21![Southwest logo]()
$323
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:35 am -
1 stop4h 57m
Sat 9/123:54 pm -
1 stop5h 08m
Deal found 8/20![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/194:55 pm -
1 stop5h 52m
Sat 9/265:46 pm -
1 stop5h 13m
Deal found 8/21![United Airlines logo]()
$351
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.
Thu 9/171:00 pm -
1 stop5h 10m
Tue 9/226:40 am -
1 stop4h 20m
Deal found 8/19![Delta logo]()
$297
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 9/116:50 pm -
Nonstop2h 10m
Sun 9/137:50 pm -
Nonstop2h 00m
Deal found 8/17![Southwest logo]()
$334
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.
Thu 10/157:29 pm -
Nonstop2h 40m
Mon 10/199:30 am -
Nonstop2h 38m
Deal found 8/17![United Airlines logo]()
$357
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.
Thu 9/106:00 am -
1 stop7h 32m
Mon 9/146:54 pm -
1 stop5h 05m
Deal found 8/18![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.
Thu 10/296:05 am -
Nonstop2h 40m
Sun 11/15:35 pm -
Nonstop2h 20m
Deal found 8/19![Southwest logo]()
$338
Last-minute flights from Pennsylvania to MissouriDiscover last-minute flight deals from Pennsylvania to Missouri. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Missouri. Data last updated August 22, 2026 and is based on user searches.
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:20 am -
1 stop12h 02m
Mon 9/74:23 pm -
1 stop16h 44m
Deal found 8/17![Frontier logo]()
$238
This Frontier deal was found by Cheapflights users on 8/21. 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.
Sat 9/58:59 am -
1 stop9h 51m
Mon 9/142:29 pm -
1 stop8h 41m
Deal found 8/21![Frontier logo]()
$239
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:59 am -
1 stop9h 51m
Mon 9/74:23 pm -
1 stop16h 44m
Deal found 8/18![Frontier logo]()
$245
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:20 am -
1 stop4h 37m
Thu 9/108:40 am -
Nonstop2h 14m
Deal found 8/18![United Airlines logo]()
$246
This CheapOair deal was found by Cheapflights users on 8/22. 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.
Wed 9/91:00 pm -
1 stop7h 17m
Mon 9/148:10 pm -
1 stop24h 49m
Deal found 8/22![Frontier logo]()
$240
This Travelocity deal was found by Cheapflights users on 8/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 pm -
1 stop26h 17m
Mon 9/148:10 pm -
1 stop19h 49m
Deal found 8/21![Frontier logo]()
$239
This Kissandfly.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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:26 pm -
2 stops23h 51m
Mon 9/142:29 pm -
1 stop8h 41m
Deal found 8/17![Frontier logo]()
$241
This Delta deal was found by Cheapflights users on 8/21. 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.
Sat 9/126:07 pm -
1 stop6h 35m
Mon 9/146:54 pm -
1 stop4h 47m
Deal found 8/21![Delta logo]()
$237
This Delta deal was found by Cheapflights users on 8/21. 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.
Sat 9/1212:32 pm -
1 stop3h 42m
Tue 9/1510:00 am -
1 stop7h 31m
Deal found 8/21![Delta logo]()
$237
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:00 am -
1 stop13h 17m
Mon 9/218:10 pm -
1 stop24h 49m
Deal found 8/19![Frontier logo]()
$238
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:24 pm -
1 stop5h 03m
Mon 9/216:00 am -
Nonstop2h 19m
Deal found 8/18![American Airlines logo]()
$246
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 9/196:30 am -
2 stops7h 45m
Sat 9/193:00 pm -
1 stop4h 05m
Deal found 8/18![Southwest logo]()
$242
One-way flights from Pennsylvania to MissouriSearch for one-way flight options from Pennsylvania to Missouri. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Pennsylvania to Missouri. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:30 am -
1 stop9h 09m
Deal found 8/18![Frontier logo]()
$99
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:35 am -
1 stop7h 05m
Deal found 8/19![Frontier logo]()
$100
This Trip.com deal was found by Cheapflights users on 8/21. 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 10/611:35 am -
1 stop26h 35m
Deal found 8/21![Frontier logo]()
$103
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:55 am -
1 stop11h 29m
Deal found 8/18![Frontier logo]()
$104
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:55 am -
1 stop12h 59m
Deal found 8/17![Frontier logo]()
$105
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.
Wed 11/410:29 pm -
1 stop12h 11m
Deal found 8/17![Frontier logo]()
$108
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:55 am -
1 stop18h 18m
Deal found 8/19![Frontier logo]()
$110
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:35 am -
1 stop7h 05m
Deal found 8/20![Frontier logo]()
$113
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:35 am -
1 stop7h 05m
Deal found 8/19![Frontier logo]()
$114
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:55 am -
1 stop11h 39m
Deal found 8/17![Frontier logo]()
$119
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 9/147:50 am -
2 stops28h 42m
Deal found 8/19![Frontier logo]()
$126
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:59 pm -
Nonstop2h 25m
Deal found 8/19![American Airlines logo]()
$128
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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $237 (Delta) |
One-way from | $99 (Frontier) |
Popular in | June |
Cheapest in | February |
Average price | $476 |
Good round-trip deal | $347 or less |
Good one-way deal | $168 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 7,457,451 searches. Data last updated August 22, 2026.
Use the filters below to find and compare flights from Pennsylvania to Missouri that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.St. Louis
IAD Washington, D.C. Dulles Intl - STL Lambert-St Louis
IADSTL
Washington, D.C. Dulles Intl
Sat 9/19
6:00 am-9:34 am
1 stop4h 34m
Lambert-St Louis
Sat 9/26
1:40 pm-8:14 pm
1 stop5h 34m
$237
Washington, D.C.St. Louis
IAD Washington, D.C. Dulles Intl - STL Lambert-St Louis
IADSTL
Washington, D.C. Dulles Intl
Tue 10/27
8:13 am-1:20 pm
1 stop6h 07m
Lambert-St Louis
Thu 10/29
6:00 am-11:32 am
1 stop4h 32m
$237
Washington, D.C.St. Louis
IAD Washington, D.C. Dulles Intl - STL Lambert-St Louis
IADSTL
Washington, D.C. Dulles Intl
Wed 10/21
10:57 am-1:53 pm
1 stop3h 56m
Lambert-St Louis
Sat 10/24
10:31 am-4:16 pm
1 stop4h 45m
$237
Washington, D.C.St. Louis
DCA Washington, D.C. Reagan-National - STL Lambert-St Louis
DCASTL
Washington, D.C. Reagan-National
Tue 10/20
6:59 am-10:51 am
1 stop4h 52m
Lambert-St Louis
Mon 10/26
6:24 pm-11:07 pm
1 stop3h 43m
$237
Washington, D.C.St. Louis
DCA Washington, D.C. Reagan-National - STL Lambert-St Louis
DCASTL
Washington, D.C. Reagan-National
Mon 10/12
6:05 am-11:00 am
1 stop5h 55m
Lambert-St Louis
Fri 10/16
3:55 pm-6:55 pm
Nonstop2h 00m
$246
Washington, D.C.St. Louis
DCA Washington, D.C. Reagan-National - STL Lambert-St Louis
DCASTL
Washington, D.C. Reagan-National
Wed 9/30
2:40 pm-3:55 pm
Nonstop2h 15m
Lambert-St Louis
Fri 10/2
6:10 pm-11:30 pm
1 stop4h 20m
$246
Washington, D.C.St. Louis
DCA Washington, D.C. Reagan-National - STL Lambert-St Louis
DCASTL
Washington, D.C. Reagan-National
Thu 9/10
8:15 am-9:35 am
Nonstop2h 20m
Lambert-St Louis
Fri 9/11
10:10 am-6:00 pm
2 stops6h 50m
$251
Washington, D.C.St. Louis
DCA Washington, D.C. Reagan-National - STL Lambert-St Louis
DCASTL
Washington, D.C. Reagan-National
Fri 9/25
6:55 am-10:15 am
1 stop4h 20m
Lambert-St Louis
Sat 9/26
1:15 pm-9:55 pm
2 stops7h 40m
$261
Washington, D.C.St. Louis
IAD Washington, D.C. Dulles Intl - STL Lambert-St Louis
IADSTL
Washington, D.C. Dulles Intl
Wed 9/30
8:20 am-9:41 am
Nonstop2h 21m
Lambert-St Louis
Fri 10/2
10:27 am-4:01 pm
1 stop4h 34m
$265
Washington, D.C.Kansas City
IAD Washington, D.C. Dulles Intl - MCI Kansas City
IADMCI
Washington, D.C. Dulles Intl
Mon 9/28
5:58 pm-7:46 pm
Nonstop2h 48m
Kansas City
Wed 9/30
6:00 am-11:55 am
1 stop4h 55m
$271
Showing 1-10 of 60 resultsSorted by cheapest first
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.
IAD-STL
DCA-STL
IAD-MCI
LGA-STL
JFK-STL
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
USPA-USMO
IAD-STL
DCA-STL
IAD-MCI
LGA-STL
What is the cheapest month to book a flight from Pennsylvania to Missouri?
Currently, January is the cheapest month in which you can book a flight from Pennsylvania to Missouri (average of $361). Flying from Pennsylvania to Missouri in June is currently the most expensive (average of $493). 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 August 22, 2026.
It’s optimal to fly from Pennsylvania to Missouri in the afternoon. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight in the morning.
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 August 22, 2026.
The most flights from USPA to USMO are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Pennsylvania to Missouri?
Airfare is below average for this route at the moment.
Pennsylvania to Missouri flights typically cost between $304 and $574 in September.The cheapest round-trip price found within the last 5 days was $141 on Frontier (Sep 14-Sep 21).
How far ahead should I book a flight from Pennsylvania to Missouri?
Booking 73 days in advance of your planned departure date is, on average, the best time to get cheap flights from Pennsylvania to Missouri. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 August 15, 2026.
Travelers seeking maximum savings on their Pennsylvania to Missouri flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 August 22, 2026.
Read through reviews of airlines operating flights from Pennsylvania to Missouri, such as Southwest,Delta, andUnited 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.
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
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.
Complete your trip
Complete your trip to Missouri by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Pennsylvania to Missouri by cabin class
Find flights from Pennsylvania to Missouri, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Pennsylvania and Missouri flights
Browse other Pennsylvania and Missouri flight options. Last updated on August 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Missouri
Find the right flight back to Pennsylvania after your stay in Missouri
Pennsylvania to Missouri flights
Consider these flights traveling from Pennsylvania to Missouri.
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 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$144 | Average$239 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$428 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$188 | Average$406 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$230 | Average$433 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$248 | Average$421 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$358 | Average$433 | FlexibilityNo cancel fee | On-time62% |