$57+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STL
Mar 10 — Mar 171
1 adult, Economy
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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 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 February 8, 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 February 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Tue 2/246:00 pm
EWR
- STL
1 stop13h 51m
Multiple Airlines
Sat 2/288:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sun 2/225:59 am
EWR
- STL
1 stop25h 52m
Multiple Airlines
Sat 2/288:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sun 2/225:59 am
EWR
- STL
1 stop25h 52m
Multiple Airlines
Wed 2/258:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 2/5. 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.
Thu 2/265:55 am
EWR
- STL
1 stop25h 56m
Multiple Airlines
Mon 3/28:22 pm
STL
- EWR
1 stop10h 43m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$137
This Expedia deal was found by Cheapflights users on 2/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:18 pm
PHL
- STL
1 stop6h 41m
Frontier
Tue 3/33:49 pm
STL
- PHL
1 stop21h 51m
Frontier
Deal found 2/6![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Tue 2/246:00 pm
EWR
- STL
1 stop13h 51m
Multiple Airlines
Fri 2/278:22 pm
STL
- EWR
1 stop26h 07m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Fri 2/205:50 am
EWR
- STL
1 stop26h 01m
Multiple Airlines
Sat 2/288:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Fri 2/205:50 am
EWR
- STL
1 stop26h 01m
Multiple Airlines
Wed 2/258:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Thu 2/265:15 am
EWR
- STL
1 stop26h 36m
Multiple Airlines
Sat 2/288:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sun 3/110:30 pm
EWR
- STL
1 stop9h 21m
Frontier
Fri 3/61:09 pm
STL
- EWR
1 stop10h 59m
Frontier
Deal found 2/6![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Mon 3/3010:18 pm
EWR
- STL
1 stop13h 14m
Multiple Airlines
Fri 5/18:13 pm
STL
- EWR
1 stop10h 57m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1910:30 pm
EWR
- STL
1 stop16h 04m
Frontier
Mon 3/2312:16 pm
STL
- EWR
1 stop8h 14m
Frontier
Deal found 2/8![Frontier logo]()
$149
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 February 8, 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 February 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1910:30 pm
EWR
- STL
1 stop16h 04m
Frontier
Mon 3/2312:16 pm
STL
- EWR
1 stop8h 14m
Frontier
Deal found 2/8![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Thu 3/56:54 pm
PHL
- STL
1 stop17h 55m
Multiple Airlines
Tue 3/104:51 pm
STL
- PHL
2 stops18h 22m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$192
This United Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:59 pm
EWR
- STL
Nonstop2h 58m
United Airlines
Sat 5/96:15 am
STL
- EWR
Nonstop2h 34m
United Airlines
Deal found 2/8![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:00 am
DCA
- STL
1 stop7h 30m
Southwest
Sat 4/2510:55 am
STL
- DCA
2 stops7h 00m
Southwest
Deal found 2/7![Southwest logo]()
$268
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/37:40 pm
LGA
- STL
Nonstop2h 56m
American Airlines
Wed 4/811:25 am
STL
- LGA
Nonstop2h 35m
American Airlines
Deal found 2/8![American Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 2/6. 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.
Sat 4/113:50 pm
LGA
- STL
Nonstop2h 57m
Delta
Mon 4/135:27 pm
STL
- LGA
Nonstop2h 33m
Delta
Deal found 2/6![Delta logo]()
$278
This Spirit deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:00 pm
LGA
- MCI
1 stop6h 59m
Spirit Airlines
Sat 5/1612:12 pm
MCI
- LGA
1 stop10h 36m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 3/43:45 pm
PHL
- STL
1 stop7h 42m
Frontier
Sat 3/78:12 pm
STL
- PHL
2 stops33h 55m
Frontier
Deal found 2/4![Frontier logo]()
$165
This CheapOair deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:18 pm
PHL
- STL
1 stop6h 41m
Frontier
Wed 3/45:18 pm
STL
- PHL
1 stop22h 19m
Frontier
Deal found 2/6![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/210:05 am
EWR
- STL
1 stop14h 54m
Multiple Airlines
Wed 3/48:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:05 am
PHL
- STL
1 stop6h 25m
Frontier
Sun 4/1911:21 am
STL
- PHL
1 stop19h 49m
Frontier
Deal found 2/7![Frontier logo]()
$208
This United Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/178:32 am
IAD
- MCI
1 stop6h 48m
United Airlines
Wed 3/185:40 pm
MCI
- IAD
Nonstop2h 30m
United Airlines
Deal found 2/8![United Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/13:25 pm
DCA
- STL
Nonstop2h 35m
Southwest
Mon 4/64:45 pm
STL
- DCA
1 stop5h 45m
Southwest
Deal found 2/7![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:00 am
IAD
- MCI
1 stop4h 51m
Delta
Wed 3/186:07 am
MCI
- IAD
1 stop6h 25m
Delta
Deal found 2/8![Delta logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 2/5. 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 3/46:00 am
PHL
- STL
2 stops17h 27m
Multiple Airlines
Thu 3/53:49 pm
STL
- PHL
1 stop14h 43m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$256
This Southwest deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/206:00 am
LGA
- STL
Nonstop3h 00m
Southwest
Tue 3/246:00 am
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 2/8![Southwest logo]()
$278
This United Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/39:59 pm
EWR
- STL
Nonstop2h 58m
United Airlines
Tue 4/76:15 am
STL
- EWR
Nonstop2h 36m
United Airlines
Deal found 2/8![United Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2512:14 pm
IAD
- STL
1 stop5h 18m
Delta
Thu 3/266:00 am
STL
- IAD
1 stop4h 52m
Delta
Deal found 2/7![Delta logo]()
$283
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:30 am
JFK
- STL
1 stop5h 59m
American Airlines
Sun 4/510:39 am
STL
- JFK
1 stop5h 34m
American Airlines
Deal found 2/8![American Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:59 pm
LGA
- STL
1 stop12h 38m
Multiple Airlines
Sat 3/218:12 pm
STL
- LGA
2 stops34h 25m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$272
This Southwest deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:05 am
LGA
- STL
Nonstop2h 50m
Southwest
Tue 4/217:35 pm
STL
- LGA
Nonstop2h 25m
Southwest
Deal found 2/8![Southwest logo]()
$282
This United Airlines deal was found by Cheapflights users on 2/5. 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 5/59:59 pm
EWR
- STL
Nonstop2h 58m
United Airlines
Sat 5/96:15 am
STL
- EWR
Nonstop2h 34m
United Airlines
Deal found 2/5![United Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:00 am
EWR
- STL
1 stop6h 49m
Frontier
Sun 3/84:51 pm
STL
- EWR
2 stops31h 12m
Frontier
Deal found 2/8![Frontier logo]()
$261
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/65:30 pm
LGA
- STL
Nonstop2h 56m
Delta
Fri 6/195:30 pm
STL
- LGA
1 stop5h 20m
Delta
Deal found 2/8![Delta logo]()
$288
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/19:00 am
JFK
- STL
1 stop5h 39m
American Airlines
Thu 4/27:05 am
STL
- JFK
1 stop5h 19m
American Airlines
Deal found 2/8![American Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:45 am
PHL
- STL
2 stops14h 27m
Multiple Airlines
Sun 4/1911:21 am
STL
- PHL
1 stop19h 49m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$272
This Southwest deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:30 am
DCA
- STL
1 stop5h 10m
Southwest
Fri 3/207:35 pm
STL
- DCA
Nonstop1h 55m
Southwest
Deal found 2/7![Southwest logo]()
$286
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/132:00 pm
LGA
- STL
1 stop8h 06m
Delta
Tue 3/176:10 am
STL
- LGA
Nonstop2h 24m
Delta
Deal found 2/8![Delta logo]()
$288
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Tue 4/79:59 pm
EWR
- STL
Nonstop2h 58m
United Airlines
Thu 4/97:45 am
STL
- EWR
1 stop6h 15m
United Airlines
Deal found 2/6![United Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:20 am
IAD
- STL
2 stops25h 57m
Frontier
Sun 3/2911:21 am
STL
- IAD
1 stop12h 10m
Frontier
Deal found 2/8![Frontier logo]()
$274
Last-minute flights from Pennsylvania to MissouriDiscover last-minute flight deals from Pennsylvania to Missouri. Data last updated February 8, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Missouri. Data last updated February 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Fri 2/205:50 am
EWR
- STL
1 stop26h 01m
Multiple Airlines
Sat 2/288:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Fri 2/205:50 am
EWR
- STL
1 stop26h 01m
Multiple Airlines
Wed 2/258:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sun 2/225:59 am
EWR
- STL
1 stop25h 52m
Multiple Airlines
Sat 2/288:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sun 2/225:59 am
EWR
- STL
1 stop25h 52m
Multiple Airlines
Wed 2/258:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Tue 2/246:00 pm
EWR
- STL
1 stop13h 51m
Multiple Airlines
Sat 2/288:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Tue 2/246:00 pm
EWR
- STL
1 stop13h 51m
Multiple Airlines
Fri 2/278:22 pm
STL
- EWR
1 stop26h 07m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 2/5. 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.
Thu 2/265:55 am
EWR
- STL
1 stop25h 56m
Multiple Airlines
Mon 3/28:22 pm
STL
- EWR
1 stop10h 43m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Thu 2/265:15 am
EWR
- STL
1 stop26h 36m
Multiple Airlines
Sat 2/288:17 pm
STL
- EWR
1 stop10h 48m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sun 3/110:30 pm
EWR
- STL
1 stop9h 21m
Frontier
Fri 3/61:09 pm
STL
- EWR
1 stop10h 59m
Frontier
Deal found 2/6![Frontier logo]()
$146
This Expedia deal was found by Cheapflights users on 2/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:18 pm
PHL
- STL
1 stop6h 41m
Frontier
Tue 3/33:49 pm
STL
- PHL
1 stop21h 51m
Frontier
Deal found 2/6![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1910:30 pm
EWR
- STL
1 stop16h 04m
Frontier
Mon 3/2312:16 pm
STL
- EWR
1 stop8h 14m
Frontier
Deal found 2/8![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Mon 3/3010:18 pm
EWR
- STL
1 stop13h 14m
Multiple Airlines
Fri 5/18:13 pm
STL
- EWR
1 stop10h 57m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$147
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 February 8, 2026.
Search for one-way flight options from Pennsylvania to Missouri. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
This Trip.com deal was found by Cheapflights users on 2/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:00 pm
EWR
- STL
1 stop13h 51m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$57
This Trip.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:20 am
IAD
- STL
1 stop8h 14m
Frontier
Deal found 2/7![Frontier logo]()
$62
This Trip.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/275:55 am
EWR
- STL
1 stop25h 56m
Frontier
Deal found 2/7![Frontier logo]()
$62
This Trip.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/43:00 pm
EWR
- STL
1 stop8h 27m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$63
This WAYA deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:50 am
EWR
- STL
1 stop5h 47m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$65
This WAYA deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:20 am
IAD
- STL
1 stop5h 17m
Frontier
Deal found 2/7![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 2/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2410:31 pm
EWR
- STL
1 stop9h 20m
Frontier
Deal found 2/6![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:30 pm
EWR
- STL
1 stop13h 07m
Frontier
Deal found 2/7![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:31 pm
EWR
- STL
1 stop14h 18m
Frontier
Deal found 2/8![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Mon 3/95:15 am
EWR
- STL
1 stop9h 04m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Tue 4/1410:29 pm
EWR
- STL
1 stop9h 21m
Frontier
Deal found 2/6![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:46 pm
PHL
- STL
1 stop27h 41m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$70
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 February 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $129 (Kiwi.com) |
One-way from | $57 (Trip.com) |
Popular in | May |
Cheapest in | August |
Average price | $432 |
Good round-trip deal | $343 or less |
Good one-way deal | $171 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Pennsylvania to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from Pennsylvania to Missouri that are best for you.
Fly from
Pennsylvania
Fly to
Missouri
Route
Depart
Return
Price
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Thu 3/19
10:30 pm-1:34 pm
1 stop16h 04m
Lambert-St Louis
Mon 3/23
12:16 pm-9:30 pm
1 stop8h 14m
$149
PhiladelphiaSt. Louis
PHL - STL
PHLSTL
Philadelphia
Wed 3/4
3:45 pm-10:27 pm
1 stop7h 42m
Lambert-St Louis
Sat 3/7
8:12 pm-7:07 am
2 stops33h 55m
$165
PhiladelphiaSt. Louis
PHL - STL
PHLSTL
Philadelphia
Mon 3/2
6:18 pm-11:59 pm
1 stop6h 41m
Lambert-St Louis
Wed 3/4
5:18 pm-4:37 pm
1 stop22h 19m
$186
PhiladelphiaSt. Louis
PHL - STL
PHLSTL
Philadelphia
Thu 3/5
6:54 pm-11:49 am
1 stop17h 55m
Lambert-St Louis
Tue 3/10
4:51 pm-12:13 pm
2 stops18h 22m
$192
PhiladelphiaSt. Louis
PHL - STL
PHLSTL
Philadelphia
Thu 4/16
5:05 am-10:30 am
1 stop6h 25m
Lambert-St Louis
Sun 4/19
11:21 am-8:10 am
1 stop19h 49m
$208
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Mon 3/2
10:05 am-11:59 pm
1 stop14h 54m
Lambert-St Louis
Wed 3/4
8:17 pm-8:05 am
1 stop10h 48m
$226
PhiladelphiaSt. Louis
PHL - STL
PHLSTL
Philadelphia
Wed 3/4
6:00 am-10:27 pm
2 stops17h 27m
Lambert-St Louis
Thu 3/5
3:49 pm-7:32 am
1 stop14h 43m
$256
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Wed 5/6
9:59 pm-11:57 pm
Nonstop2h 58m
Lambert-St Louis
Sat 5/9
6:15 am-9:49 am
Nonstop2h 34m
$259
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Fri 3/6
6:00 am-11:49 am
1 stop6h 49m
Lambert-St Louis
Sun 3/8
4:51 pm-1:03 am
2 stops31h 12m
$261
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
Mon 4/20
6:00 am-12:30 pm
1 stop7h 30m
Lambert-St Louis
Sat 4/25
10:55 am-6:55 pm
2 stops7h 00m
$268
Showing 1-10 of 60 results
Best time to book a flight from Pennsylvania to Missouri
Have a flexible travel schedule? Discover the best time to fly to Missouri from Pennsylvania with our price prediction graph.
EWR-STL
EWR-MCI
IAD-STL
DCA-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
EWR-STL
EWR-MCI
IAD-STL
DCA-STL
What is the cheapest month to book a flight from Pennsylvania to Missouri?
Currently, February is the cheapest month in which you can book a flight from Pennsylvania to Missouri (average of $128). Flying from Pennsylvania to Missouri in June is currently the most expensive (average of $229). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PA to MO?
Find hourly flight availability from Pennsylvania to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 8, 2026.
It’s optimal to fly from Pennsylvania to Missouri in the afternoon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the morning.
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 January 31, 2026.
Travelers seeking maximum savings on their Pennsylvania to Missouri flight should consider departing on Monday evenings 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.
How much does it cost to fly round-trip from Pennsylvania to Missouri?
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 February 8, 2026.
Read through reviews of airlines operating flights from Pennsylvania to Missouri, such as Southwest, Delta, and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Pennsylvania to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Pennsylvania to Missouri
See prices for flight routes from nearby airports that may be better suited for you.
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 February 8, 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 2,558,603 searches. Data last updated February 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$95 | Average$178 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$127 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$170 | Average$403 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$219 | Average$360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$241 | Average$409 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$248 | Average$410 | FlexibilityNo cancel fee | On-time69% |