$58+ Cheap flights from Pennsylvania to Illinois
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 — ORD
Mar 10 — Mar 171
1 adult, Economy
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Cheapest flights from Pennsylvania to IllinoisExplore the most affordable flight options available from Pennsylvania to Illinois. 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 Illinois. 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 2/8. 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 4/2411:04 am
JFK
- ORD
Nonstop2h 56m
Frontier
Sun 4/266:31 am
ORD
- JFK
Nonstop2h 29m
Frontier
Deal found 2/8![Frontier logo]()
$86
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:40 am
LGA
- ORD
Nonstop2h 42m
Spirit Airlines
Wed 3/45:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$86
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:03 am
JFK
- ORD
Nonstop3h 00m
Frontier
Mon 2/236:40 am
ORD
- JFK
Nonstop2h 24m
Frontier
Deal found 2/5![Frontier logo]()
$87
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:40 am
LGA
- ORD
Nonstop2h 42m
Spirit Airlines
Wed 2/255:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$87
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2211:03 am
JFK
- ORD
Nonstop3h 00m
Frontier
Mon 2/236:40 am
ORD
- JFK
Nonstop2h 24m
Frontier
Deal found 2/5![Frontier logo]()
$88
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/179:05 pm
EWR
- ORD
Nonstop2h 38m
Spirit Airlines
Wed 4/224:47 pm
ORD
- EWR
Nonstop2h 08m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$88
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:55 am
LGA
- ORD
1 stop10h 52m
Spirit Airlines
Sat 2/285:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$88
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/144:29 pm
JFK
- ORD
Nonstop3h 00m
Frontier
Wed 3/1812:05 pm
ORD
- JFK
Nonstop2h 24m
Frontier
Deal found 2/6![Frontier logo]()
$89
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.
Sun 4/2611:30 am
EWR
- MDW
Nonstop2h 30m
Frontier
Tue 4/287:30 am
MDW
- EWR
Nonstop2h 08m
Frontier
Deal found 2/7![Frontier logo]()
$89
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.
Wed 4/110:54 pm
EWR
- ORD
Nonstop2h 28m
Spirit Airlines
Wed 4/154:47 pm
ORD
- EWR
Nonstop2h 08m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$89
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:59 pm
LGA
- ORD
1 stop7h 12m
Spirit Airlines
Tue 3/105:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$89
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:04 am
JFK
- ORD
Nonstop2h 56m
Frontier
Thu 4/236:31 am
ORD
- JFK
Nonstop2h 29m
Frontier
Deal found 2/7![Frontier logo]()
$90
Best flights from Pennsylvania to IllinoisDiscover carefully curated flight deals from Pennsylvania to Illinois 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 Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 8, 2026.
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.
Thu 3/57:40 am
LGA
- ORD
Nonstop2h 42m
Spirit Airlines
Fri 3/65:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$111
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.
Sat 3/73:20 pm
LGA
- ORD
Nonstop2h 45m
United Airlines
Sun 3/86:00 am
ORD
- LGA
Nonstop2h 12m
United Airlines
Deal found 2/8![United Airlines logo]()
$126
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:24 pm
JFK
- ORD
Nonstop3h 17m
Delta
Wed 4/2211:08 am
ORD
- JFK
Nonstop2h 26m
Delta
Deal found 2/5![Delta logo]()
$137
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.
Thu 4/307:25 am
LGA
- MDW
Nonstop2h 25m
Southwest
Sun 5/35:20 am
MDW
- LGA
Nonstop2h 00m
Southwest
Deal found 2/7![Southwest logo]()
$137
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/148:09 am
IAD
- MDW
1 stop24h 55m
Frontier
Sun 5/179:14 am
MDW
- IAD
1 stop21h 13m
Frontier
Deal found 2/7![Frontier logo]()
$160
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.
Wed 2/1811:34 am
PHL
- ORD
1 stop6h 18m
Multiple Airlines
Tue 3/107:00 am
ORD
- PHL
1 stop11h 52m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$178
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:00 am
DCA
- ORD
1 stop6h 25m
JetBlue
Wed 4/810:00 am
ORD
- DCA
1 stop7h 55m
JetBlue
Deal found 2/7![JetBlue logo]()
$207
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.
Thu 4/3012:59 pm
LGA
- ORD
Nonstop2h 42m
Spirit Airlines
Sun 5/39:04 am
ORD
- LGA
Nonstop2h 00m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$121
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.
Sun 4/198:19 am
JFK
- ORD
Nonstop3h 09m
Delta
Tue 4/216:21 pm
ORD
- JFK
Nonstop2h 36m
Delta
Deal found 2/7![Delta logo]()
$137
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.
Thu 4/99:00 am
EWR
- ORD
Nonstop2h 44m
United Airlines
Sat 4/187:41 pm
ORD
- EWR
Nonstop2h 24m
United Airlines
Deal found 2/6![United Airlines logo]()
$137
This Spirit 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:00 am
EWR
- ORD
1 stop13h 46m
Spirit Airlines
Sun 3/86:51 pm
ORD
- EWR
Nonstop2h 09m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$131
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.
Thu 3/59:55 pm
LGA
- MDW
Nonstop2h 25m
Southwest
Mon 3/96:40 pm
MDW
- LGA
Nonstop2h 05m
Southwest
Deal found 2/8![Southwest logo]()
$147
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.
Tue 4/143:24 pm
JFK
- ORD
Nonstop3h 17m
Delta
Sat 4/186:04 am
ORD
- JFK
Nonstop2h 25m
Delta
Deal found 2/6![Delta logo]()
$137
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.
Fri 5/19:50 pm
EWR
- ORD
Nonstop2h 47m
United Airlines
Sun 5/36:00 am
ORD
- EWR
Nonstop2h 12m
United Airlines
Deal found 2/6![United Airlines logo]()
$137
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:05 am
LGA
- MDW
Nonstop2h 40m
Southwest
Sun 3/16:00 am
MDW
- LGA
Nonstop2h 05m
Southwest
Deal found 2/5![Southwest logo]()
$147
This Spirit 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/211:05 pm
EWR
- ORD
Nonstop2h 35m
Spirit Airlines
Sun 3/88:16 pm
ORD
- EWR
1 stop13h 41m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$136
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.
Tue 4/283:24 pm
JFK
- ORD
Nonstop3h 17m
Delta
Sun 5/246:41 am
ORD
- JFK
Nonstop2h 19m
Delta
Deal found 2/7![Delta logo]()
$137
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 5/57:30 am
EWR
- ORD
Nonstop2h 44m
United Airlines
Thu 5/287:15 am
ORD
- EWR
Nonstop2h 20m
United Airlines
Deal found 2/5![United Airlines logo]()
$137
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/275:37 pm
IAD
- MDW
1 stop6h 00m
Frontier
Sun 3/17:30 am
MDW
- IAD
1 stop22h 50m
Frontier
Deal found 2/8![Frontier logo]()
$167
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 3/106:50 am
LGA
- MDW
Nonstop2h 30m
Southwest
Tue 3/106:45 pm
MDW
- LGA
Nonstop2h 05m
Southwest
Deal found 2/7![Southwest logo]()
$147
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 5/510:24 am
JFK
- ORD
Nonstop3h 02m
Delta
Tue 5/1210:40 am
ORD
- JFK
Nonstop2h 18m
Delta
Deal found 2/8![Delta logo]()
$137
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.
Thu 4/169:00 am
EWR
- ORD
Nonstop2h 44m
United Airlines
Sun 4/196:00 am
ORD
- EWR
Nonstop2h 10m
United Airlines
Deal found 2/6![United Airlines logo]()
$137
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.
Mon 2/237:35 am
PHL
- ORD
Nonstop2h 36m
Frontier
Tue 3/107:41 pm
ORD
- PHL
1 stop14h 18m
Frontier
Deal found 2/7![Frontier logo]()
$169
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.
Thu 4/309:05 pm
EWR
- ORD
Nonstop2h 38m
Spirit Airlines
Sun 5/35:30 am
ORD
- EWR
1 stop6h 20m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$143
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/279:05 am
LGA
- MDW
Nonstop2h 40m
Southwest
Sun 3/18:20 am
MDW
- LGA
Nonstop2h 10m
Southwest
Deal found 2/5![Southwest logo]()
$147
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:35 pm
JFK
- ORD
Nonstop3h 21m
Delta
Mon 4/206:04 am
ORD
- JFK
Nonstop2h 25m
Delta
Deal found 2/5![Delta logo]()
$137
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.
Thu 4/238:05 am
LGA
- ORD
Nonstop2h 39m
United Airlines
Sun 4/266:00 am
ORD
- LGA
Nonstop2h 13m
United Airlines
Deal found 2/6![United Airlines logo]()
$137
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:00 am
DCA
- ORD
1 stop7h 04m
JetBlue
Wed 3/1110:00 am
ORD
- DCA
1 stop6h 49m
JetBlue
Deal found 2/8![JetBlue logo]()
$207
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 5/19:05 pm
EWR
- ORD
Nonstop2h 38m
Spirit Airlines
Sun 5/34:47 pm
ORD
- EWR
Nonstop2h 08m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$148
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 5/68:19 am
JFK
- ORD
Nonstop3h 09m
Delta
Sat 5/96:15 pm
ORD
- JFK
Nonstop2h 28m
Delta
Deal found 2/7![Delta logo]()
$137
Last-minute flights from Pennsylvania to IllinoisDiscover last-minute flight deals from Pennsylvania to Illinois. Data last updated February 8, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Illinois. Data last updated February 8, 2026 and is based on user searches.
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1711:05 pm
EWR
- ORD
Nonstop2h 35m
Spirit Airlines
Wed 2/186:51 pm
ORD
- EWR
Nonstop2h 09m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$89
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:03 am
JFK
- ORD
Nonstop3h 00m
Frontier
Mon 2/236:40 am
ORD
- JFK
Nonstop2h 24m
Frontier
Deal found 2/7![Frontier logo]()
$87
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2211:03 am
JFK
- ORD
Nonstop3h 00m
Frontier
Mon 2/236:40 am
ORD
- JFK
Nonstop2h 24m
Frontier
Deal found 2/5![Frontier logo]()
$88
This Spirit 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2211:05 pm
EWR
- ORD
Nonstop2h 35m
Spirit Airlines
Sun 3/16:51 pm
ORD
- EWR
Nonstop2h 09m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$90
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:40 am
LGA
- ORD
Nonstop2h 42m
Spirit Airlines
Wed 2/255:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$87
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:55 am
LGA
- ORD
1 stop10h 52m
Spirit Airlines
Sat 2/285:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$88
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:40 am
LGA
- ORD
Nonstop2h 42m
Spirit Airlines
Wed 3/45:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$86
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:40 am
LGA
- ORD
Nonstop2h 42m
Spirit Airlines
Tue 3/312:44 pm
ORD
- LGA
1 stop9h 37m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$89
This Spirit 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/611:05 pm
EWR
- ORD
Nonstop2h 35m
Spirit Airlines
Sun 3/86:51 pm
ORD
- EWR
Nonstop2h 09m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$88
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/144:29 pm
JFK
- ORD
Nonstop3h 00m
Frontier
Wed 3/1812:05 pm
ORD
- JFK
Nonstop2h 24m
Frontier
Deal found 2/6![Frontier logo]()
$89
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/154:29 pm
JFK
- ORD
Nonstop3h 00m
Frontier
Wed 3/1812:05 pm
ORD
- JFK
Nonstop2h 24m
Frontier
Deal found 2/7![Frontier logo]()
$86
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1911:30 am
EWR
- MDW
Nonstop2h 32m
Frontier
Tue 3/247:30 am
MDW
- EWR
Nonstop2h 00m
Frontier
Deal found 2/7![Frontier logo]()
$90
One-way flights from Pennsylvania to IllinoisSearch for one-way flight options from Pennsylvania to Illinois. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
Search for one-way flight options from Pennsylvania to Illinois. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:59 pm
LGA
- ORD
1 stop9h 14m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$58
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:03 am
JFK
- ORD
Nonstop3h 00m
Frontier
Deal found 2/8![Frontier logo]()
$59
This Spirit 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:30 am
LGA
- ORD
Nonstop2h 31m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$59
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.
Sat 3/710:00 am
JFK
- ORD
1 stop13h 39m
Frontier
Deal found 2/5![Frontier logo]()
$60
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.
Sat 3/73:14 pm
LGA
- ORD
1 stop8h 25m
Frontier
Deal found 2/5![Frontier logo]()
$60
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 3/96:00 am
JFK
- ORD
1 stop27h 23m
Frontier
Deal found 2/8![Frontier logo]()
$61
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 3/96:00 am
LGA
- ORD
1 stop27h 23m
Frontier
Deal found 2/6![Frontier logo]()
$61
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/511:04 am
JFK
- ORD
Nonstop2h 56m
Frontier
Deal found 2/7![Frontier logo]()
$62
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:54 pm
LGA
- ORD
1 stop7h 47m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$62
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.
Sat 4/256:30 am
LGA
- MDW
1 stop10h 43m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$62
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 3/35:15 am
EWR
- MDW
1 stop14h 52m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$63
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/254:29 pm
JFK
- ORD
Nonstop3h 00m
Frontier
Deal found 2/8![Frontier logo]()
$63
Find flight deals from Pennsylvania to Illinois
Keep the following information in mind while searching for Pennsylvania to Illinois flight deals. Data was last updated February 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $86 (Kiwi.com) |
One-way from | $58 (Cheapflightsfares) |
Popular in | February |
Cheapest in | January |
Average price | $322 |
Good round-trip deal | $304 or less |
Good one-way deal | $127 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Pennsylvania to Illinois 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 Illinois that are best for you.
Fly from
Pennsylvania
Fly to
Illinois
Route
Depart
Return
Price
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Thu 3/5
7:40 am-9:22 am
Nonstop2h 42m
Chicago O'Hare Intl
Fri 3/6
5:58 pm-8:59 pm
Nonstop2h 01m
$111
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Thu 4/30
12:59 pm-2:41 pm
Nonstop2h 42m
Chicago O'Hare Intl
Sun 5/3
9:04 am-12:04 pm
Nonstop2h 00m
$121
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Sat 3/7
3:20 pm-5:05 pm
Nonstop2h 45m
Chicago O'Hare Intl
Sun 3/8
6:00 am-9:12 am
Nonstop2h 12m
$126
NewarkChicago
EWR - ORD
EWRORD
Newark
Thu 3/5
5:00 am-5:46 pm
1 stop13h 46m
Chicago O'Hare Intl
Sun 3/8
6:51 pm-10:00 pm
Nonstop2h 09m
$131
NewarkChicago
EWR - ORD
EWRORD
Newark
Mon 3/2
11:05 pm-12:40 am
Nonstop2h 35m
Chicago O'Hare Intl
Sun 3/8
8:16 pm-10:57 am
1 stop13h 41m
$136
New YorkChicago
JFK - ORD
JFKORD
New York John F Kennedy Intl
Mon 4/20
3:24 pm-5:41 pm
Nonstop3h 17m
Chicago O'Hare Intl
Wed 4/22
11:08 am-2:34 pm
Nonstop2h 26m
$137
New YorkChicago
LGA - MDW
LGAMDW
New York LaGuardia
Thu 4/30
7:25 am-8:50 am
Nonstop2h 25m
Chicago Midway
Sun 5/3
5:20 am-8:20 am
Nonstop2h 00m
$137
New YorkChicago
JFK - ORD
JFKORD
New York John F Kennedy Intl
Sun 4/19
8:19 am-10:28 am
Nonstop3h 09m
Chicago O'Hare Intl
Tue 4/21
6:21 pm-9:57 pm
Nonstop2h 36m
$137
NewarkChicago
EWR - ORD
EWRORD
Newark
Thu 4/9
9:00 am-10:44 am
Nonstop2h 44m
Chicago O'Hare Intl
Sat 4/18
7:41 pm-11:05 pm
Nonstop2h 24m
$137
New YorkChicago
JFK - ORD
JFKORD
New York John F Kennedy Intl
Tue 4/14
3:24 pm-5:41 pm
Nonstop3h 17m
Chicago O'Hare Intl
Sat 4/18
6:04 am-9:29 am
Nonstop2h 25m
$137
Showing 1-10 of 60 results
Best time to book a flight from Pennsylvania to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Pennsylvania with our price prediction graph.
JFK-ORD
LGA-ORD
EWR-ORD
EWR-MDW
LGA-MDW
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 Illinois
USPA-USIL
JFK-ORD
LGA-ORD
EWR-ORD
EWR-MDW
What is the cheapest month to book a flight from Pennsylvania to Illinois?
Currently, January is the cheapest month in which you can book a flight from Pennsylvania to Illinois (average of $74). Flying from Pennsylvania to Illinois in February is currently the most expensive (average of $148). 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 IL?
Find hourly flight availability from Pennsylvania to Illinois. 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.
When flying from Pennsylvania to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 17% versus a flight in the evening.
What is the cheapest day to fly from Pennsylvania to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Pennsylvania to Illinois. Price data was last updated on February 7, 2026.
Travelers seeking maximum savings on their Pennsylvania to Illinois flight should consider departing on Friday 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.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated February 8, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Pennsylvania to Illinois by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
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 Illinois. 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 Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Pennsylvania to Illinois by cabin class
Find flights from Pennsylvania to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Pennsylvania and Illinois flights
Browse other Pennsylvania and Illinois 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 Illinois
Find the right flight back to Pennsylvania after your stay in Illinois
Pennsylvania to Illinois flights
Consider these flights traveling from Pennsylvania to Illinois.
Top 5 airlines flying from Pennsylvania to Illinois
Discover the top 5 airlines that operate flights from Pennsylvania to Illinois. 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$74 | Average$173 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$91 | Average$365 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$316 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$98 | Average$430 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$107 | Average$391 | FlexibilityNo cancel fee | On-time69% |