$89+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Find cheap flights from Pennsylvania to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from 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 August 10, 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 August 10, 2026.
This Super.com deal was found by Cheapflights users on 8/5. 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.
Sat 9/123:30 pm -
1 stop8h 29m
Mon 9/147:25 am -
Nonstop2h 24m
Deal found 8/5![Frontier logo]()
$174
This Frontier deal was found by Cheapflights users on 8/7. 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.
Wed 9/1612:40 pm -
1 stop6h 43m
Mon 9/217:25 am -
Nonstop2h 24m
Deal found 8/7![Frontier logo]()
$175
This Frontier deal was found by Cheapflights users on 8/7. 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.
Thu 10/111:54 am -
Nonstop2h 36m
Fri 10/27:25 am -
Nonstop2h 24m
Deal found 8/7![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:35 am -
2 stops12h 33m
Thu 9/107:25 am -
Nonstop2h 24m
Deal found 8/6![Frontier logo]()
$177
This Super.com deal was found by Cheapflights users on 8/7. 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 10/111:54 am -
Nonstop2h 36m
Mon 10/57:25 am -
Nonstop2h 24m
Deal found 8/7![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 10/224:47 pm -
Nonstop2h 37m
Tue 11/32:03 pm -
1 stop8h 08m
Deal found 8/9![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/2411:54 am -
Nonstop2h 36m
Mon 9/287:28 pm -
1 stop10h 48m
Deal found 8/8![Frontier logo]()
$180
This Expedia deal was found by Cheapflights users on 8/7. 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.
Fri 9/1811:54 am -
Nonstop2h 36m
Mon 9/217:28 pm -
1 stop10h 48m
Deal found 8/7![Frontier logo]()
$181
This Frontier deal was found by Cheapflights users on 8/7. 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.
Fri 8/286:00 am -
Nonstop2h 29m
Mon 8/317:05 am -
1 stop12h 23m
Deal found 8/7![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/1112:40 pm -
1 stop6h 43m
Sun 9/137:25 am -
Nonstop2h 24m
Deal found 8/8![Frontier logo]()
$183
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/116:30 am -
Nonstop2h 28m
Mon 9/146:55 am -
Nonstop2h 04m
Deal found 8/10![American Airlines logo]()
$185
This Frontier deal was found by Cheapflights users on 8/7. 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.
Thu 9/1011:54 am -
Nonstop2h 36m
Mon 9/147:25 am -
Nonstop2h 24m
Deal found 8/7![Frontier logo]()
$185
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 August 10, 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 August 10, 2026.
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/56:30 pm -
1 stop6h 27m
Sun 9/66:40 am -
1 stop5h 05m
Deal found 8/10![Delta logo]()
$197
This Trip.com deal was found by Cheapflights users on 8/5. 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.
Thu 9/247:50 am -
1 stop10h 56m
Sat 9/266:25 am -
1 stop9h 53m
Deal found 8/5![Frontier logo]()
$223
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:29 pm -
Nonstop2h 44m
Sat 9/197:10 am -
Nonstop2h 17m
Deal found 8/6![United Airlines logo]()
$237
This JetBlue deal was found by Cheapflights users on 8/7. 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.
Sat 9/56:55 am -
Nonstop2h 48m
Sat 9/1210:59 am -
Nonstop2h 21m
Deal found 8/7![JetBlue logo]()
$242
This Southwest deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/113:25 pm -
Nonstop2h 30m
Sun 9/135:25 am -
Nonstop2h 00m
Deal found 8/9![Southwest logo]()
$247
This KAYAK deal was found by Cheapflights users on 8/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:23 am -
Nonstop2h 50m
Thu 9/176:29 am -
1 stop5h 11m
Deal found 8/7![American Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/610:10 am -
1 stop5h 10m
Fri 9/115:10 pm -
1 stop4h 52m
Deal found 8/10![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:55 pm -
1 stop4h 42m
Sat 9/57:45 pm -
Nonstop2h 25m
Deal found 8/7![United Airlines logo]()
$237
This JetBlue deal was found by Cheapflights users on 8/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:29 pm -
Nonstop2h 48m
Tue 9/16:30 pm -
Nonstop2h 36m
Deal found 8/6![JetBlue logo]()
$242
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:40 pm -
Nonstop2h 30m
Tue 10/67:40 am -
1 stop7h 35m
Deal found 8/5![Southwest logo]()
$247
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/53:00 pm -
Nonstop3h 06m
Mon 9/146:00 am -
Nonstop2h 21m
Deal found 8/10![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/6. 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 9/187:29 pm -
Nonstop2h 44m
Tue 9/225:03 pm -
Nonstop2h 22m
Deal found 8/6![United Airlines logo]()
$242
This Southwest deal was found by Cheapflights users on 8/7. 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 9/176:00 am -
Nonstop2h 15m
Tue 9/222:40 pm -
Nonstop2h 05m
Deal found 8/7![Southwest logo]()
$247
This JetBlue deal was found by Cheapflights users on 8/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:09 am -
Nonstop2h 43m
Thu 9/32:35 pm -
1 stop9h 43m
Deal found 8/6![JetBlue logo]()
$250
This Delta deal was found by Cheapflights users on 8/5. 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.
Tue 9/2910:40 am -
Nonstop2h 45m
Tue 10/61:50 pm -
Nonstop2h 30m
Deal found 8/5![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/297:23 am -
Nonstop2h 37m
Sun 10/48:00 am -
Nonstop2h 17m
Deal found 8/5![United Airlines logo]()
$242
This Southwest deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/1610:55 am -
Nonstop2h 20m
Sat 9/1912:10 pm -
Nonstop2h 10m
Deal found 8/9![Southwest logo]()
$247
This JetBlue deal was found by Cheapflights users on 8/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:45 pm -
1 stop8h 23m
Sat 9/126:00 am -
1 stop7h 07m
Deal found 8/6![JetBlue logo]()
$253
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:35 am -
Nonstop2h 52m
Tue 9/151:29 pm -
Nonstop2h 31m
Deal found 8/9![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:00 am -
Nonstop2h 39m
Wed 9/302:00 pm -
Nonstop2h 25m
Deal found 8/7![United Airlines logo]()
$247
This JetBlue deal was found by Cheapflights users on 8/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:00 am -
1 stop8h 45m
Thu 9/106:00 am -
1 stop7h 58m
Deal found 8/6![JetBlue logo]()
$253
This Southwest deal was found by Cheapflights users on 8/7. 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.
Sat 8/298:20 am -
1 stop6h 45m
Sun 8/305:25 am -
Nonstop2h 00m
Deal found 8/7![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 8/8. 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.
Thu 8/277:33 am -
Nonstop2h 54m
Sat 8/296:00 pm -
Nonstop2h 37m
Deal found 8/8![Delta logo]()
$247
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/188:27 pm -
Nonstop2h 44m
Sun 9/207:00 am -
Nonstop2h 17m
Deal found 8/9![United Airlines logo]()
$247
This JetBlue deal was found by Cheapflights users on 8/8. 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.
Tue 9/16:00 am -
1 stop8h 39m
Sat 9/53:20 pm -
1 stop7h 13m
Deal found 8/8![JetBlue logo]()
$253
This Southwest deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:35 pm -
1 stop5h 05m
Sun 11/85:00 am -
Nonstop2h 05m
Deal found 8/6![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 8/8. 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 12/117:30 am -
Nonstop2h 57m
Sun 12/136:05 am -
Nonstop2h 24m
Deal found 8/8![Delta logo]()
$247
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Thu 10/158:10 am -
Nonstop2h 37m
Fri 10/163:00 pm -
Nonstop2h 25m
Deal found 8/8![United Airlines logo]()
$247
This JetBlue deal was found by Cheapflights users on 8/7. 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.
Wed 9/164:00 pm -
1 stop8h 08m
Sun 9/203:00 pm -
1 stop7h 09m
Deal found 8/7![JetBlue logo]()
$253
This Southwest deal was found by Cheapflights users on 8/7. 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.
Sat 10/38:00 am -
1 stop8h 15m
Wed 10/75:10 pm -
Nonstop2h 05m
Deal found 8/7![Southwest logo]()
$257
Last-minute flights from Pennsylvania to IllinoisDiscover last-minute flight deals from Pennsylvania to Illinois. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Illinois. Data last updated August 10, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/7. 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.
Fri 8/286:00 am -
Nonstop2h 29m
Mon 8/317:05 am -
1 stop12h 23m
Deal found 8/7![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 8/316:09 pm -
1 stop19h 41m
Thu 9/107:28 pm -
1 stop20h 50m
Deal found 8/9![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:35 am -
2 stops12h 33m
Thu 9/107:25 am -
Nonstop2h 24m
Deal found 8/6![Frontier logo]()
$177
This Frontier deal was found by Cheapflights users on 8/8. 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.
Thu 9/1011:54 am -
Nonstop2h 36m
Mon 9/147:25 am -
Nonstop2h 24m
Deal found 8/8![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 9/1112:40 pm -
1 stop6h 43m
Sun 9/137:25 am -
Nonstop2h 24m
Deal found 8/7![Frontier logo]()
$178
This Super.com deal was found by Cheapflights users on 8/5. 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.
Sat 9/123:30 pm -
1 stop8h 29m
Mon 9/147:25 am -
Nonstop2h 24m
Deal found 8/5![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/1511:12 am -
1 stop12h 47m
Thu 9/177:11 am -
1 stop11h 58m
Deal found 8/10![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 8/7. 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.
Wed 9/1612:40 pm -
1 stop6h 43m
Mon 9/217:25 am -
Nonstop2h 24m
Deal found 8/7![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/1711:54 am -
Nonstop2h 36m
Mon 9/287:28 pm -
1 stop10h 48m
Deal found 8/9![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/1711:54 am -
Nonstop2h 36m
Sun 9/207:28 pm -
1 stop10h 48m
Deal found 8/7![Frontier logo]()
$184
This Expedia deal was found by Cheapflights users on 8/7. 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.
Fri 9/1811:54 am -
Nonstop2h 36m
Mon 9/217:28 pm -
1 stop10h 48m
Deal found 8/7![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/2411:54 am -
Nonstop2h 36m
Mon 9/287:28 pm -
1 stop10h 48m
Deal found 8/8![Frontier logo]()
$180
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 August 10, 2026.
Search for one-way flight options from Pennsylvania to Illinois. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Mytrip deal was found by Cheapflights users on 8/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:30 pm -
1 stop8h 05m
Deal found 8/5![Frontier logo]()
$89
This Mytrip deal was found by Cheapflights users on 8/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:20 am -
1 stop5h 35m
Deal found 8/5![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:13 pm -
1 stop22h 07m
Deal found 8/5![Frontier logo]()
$91
This Trip.com deal was found by Cheapflights users on 8/5. 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.
Tue 9/16:20 am -
1 stop5h 35m
Deal found 8/5![Frontier logo]()
$91
This Trip.com deal was found by Cheapflights users on 8/6. 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.
Mon 8/317:00 am -
1 stop7h 36m
Deal found 8/6![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 8/7. 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.
Sat 8/298:39 pm -
1 stop12h 14m
Deal found 8/7![Frontier logo]()
$92
This CheapOair deal was found by Cheapflights users on 8/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:20 am -
1 stop5h 35m
Deal found 8/7![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/141:06 pm -
1 stop12h 17m
Deal found 8/7![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 8/5. 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.
Wed 9/211:05 am -
1 stop13h 03m
Deal found 8/5![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 8/7. 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.
Tue 9/227:50 am -
1 stop10h 56m
Deal found 8/7![Frontier logo]()
$93
This Booking.com deal was found by Cheapflights users on 8/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:59 pm -
1 stop24h 37m
Deal found 8/7![Frontier logo]()
$94
This Booking.com deal was found by Cheapflights users on 8/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:50 am -
1 stop10h 56m
Deal found 8/7![Frontier logo]()
$94
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 August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $174 (Super.com) |
One-way from | $89 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $264 |
Good round-trip deal | $274 or less |
Good one-way deal | $170 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 August 10, 2026.
Use the filters below to find and compare flights from Pennsylvania to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Sat 9/5
6:30 pm-11:57 pm
1 stop6h 27m
Chicago O'Hare Intl
Sun 9/6
6:40 am-12:45 pm
1 stop5h 05m
$197
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Sun 9/6
10:10 am-2:20 pm
1 stop5h 10m
Chicago O'Hare Intl
Fri 9/11
5:10 pm-11:02 pm
1 stop4h 52m
$197
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - MDW Chicago Midway
IADMDW
Washington, D.C. Dulles Intl
Thu 9/24
7:50 am-5:46 pm
1 stop10h 56m
Chicago Midway
Sat 9/26
6:25 am-5:18 pm
1 stop9h 53m
$223
New YorkChicago
LGA New York LaGuardia - ORD Chicago O'Hare Intl
LGAORD
New York LaGuardia
Wed 9/16
7:29 pm-9:13 pm
Nonstop2h 44m
Chicago O'Hare Intl
Sat 9/19
7:10 am-10:27 am
Nonstop2h 17m
$237
New YorkChicago
LGA New York LaGuardia - ORD Chicago O'Hare Intl
LGAORD
New York LaGuardia
Sat 8/29
2:55 pm-6:37 pm
1 stop4h 42m
Chicago O'Hare Intl
Sat 9/5
7:45 pm-11:10 pm
Nonstop2h 25m
$237
New YorkChicago
JFK New York John F Kennedy Intl - ORD Chicago O'Hare Intl
JFKORD
New York John F Kennedy Intl
Sat 9/5
3:00 pm-5:06 pm
Nonstop3h 06m
Chicago O'Hare Intl
Mon 9/14
6:00 am-9:21 am
Nonstop2h 21m
$237
New YorkChicago
JFK New York John F Kennedy Intl - ORD Chicago O'Hare Intl
JFKORD
New York John F Kennedy Intl
Tue 9/29
10:40 am-12:25 pm
Nonstop2h 45m
Chicago O'Hare Intl
Tue 10/6
1:50 pm-5:20 pm
Nonstop2h 30m
$237
New YorkChicago
JFK New York John F Kennedy Intl - ORD Chicago O'Hare Intl
JFKORD
New York John F Kennedy Intl
Tue 9/8
7:35 am-9:27 am
Nonstop2h 52m
Chicago O'Hare Intl
Tue 9/15
1:29 pm-5:00 pm
Nonstop2h 31m
$237
New YorkChicago
JFK New York John F Kennedy Intl - ORD Chicago O'Hare Intl
JFKORD
New York John F Kennedy Intl
Sat 9/5
6:55 am-8:43 am
Nonstop2h 48m
Chicago O'Hare Intl
Sat 9/12
10:59 am-2:20 pm
Nonstop2h 21m
$242
New YorkChicago
JFK New York John F Kennedy Intl - ORD Chicago O'Hare Intl
JFKORD
New York John F Kennedy Intl
Thu 8/27
2:29 pm-4:17 pm
Nonstop2h 48m
Chicago O'Hare Intl
Tue 9/1
6:30 pm-10:06 pm
Nonstop2h 36m
$242
Showing 1-10 of 60 resultsSorted by cheapest first
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.
PHL-ORD
DCA-ORD
IAD-ORD
IAD-MDW
LGA-ORD
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
PHL-ORD
DCA-ORD
IAD-ORD
IAD-MDW
What is the cheapest month to book a flight from Pennsylvania to Illinois?
Currently, October is the cheapest month in which you can book a flight from Pennsylvania to Illinois (average of $268). Flying from Pennsylvania to Illinois in June is currently the most expensive (average of $368). 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 August 10, 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 at noon, which can drop the price by up to 22% versus a flight in the evening.
Weekly flight availability from Pennsylvania to Illinois
Explore weekly flight availability from Pennsylvania to Illinois. 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 10, 2026.
The most flights from USPA to USIL are scheduled on a Friday (53 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (20 on average).
How much does it cost to fly round-trip from Pennsylvania to Illinois?
Airfare is below average for this route at the moment.
Pennsylvania to Illinois flights typically cost between $214 and $369 in September.The cheapest round-trip price found within the last 5 days was $174 on Frontier (Sep 12-Sep 14).
How far ahead should I book a flight from Pennsylvania to Illinois?
To ensure you get the cheapest price possible for a flight from Pennsylvania to Illinois, you should look to book at least 64 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest 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 August 8, 2026.
Travelers seeking maximum savings on their Pennsylvania to Illinois flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday evenings 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 August 10, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited 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.
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
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 August 10, 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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$74 | Average$180 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$97 | Average$364 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$133 | Average$357 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$133 | Average$306 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$158 | Average$379 | FlexibilityNo cancel fee | On-time69% |