$89+ Cheap flights from Pennsylvania to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Dec 4 — Dec 111
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 November 4, 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 November 4, 2026.
This Justfly.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:34 am -
1 stop11h 29m
Mon 12/79:29 pm -
Nonstop2h 15m
Deal found 11/3![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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.
Thu 12/36:45 pm -
Nonstop2h 44m
Sun 12/69:34 pm -
Nonstop2h 15m
Deal found 10/30![Frontier logo]()
$176
This CheapOair deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:38 pm -
1 stop5h 56m
Mon 12/79:29 pm -
Nonstop2h 15m
Deal found 11/1![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/76:31 pm -
1 stop20h 59m
Wed 12/94:00 pm -
1 stop6h 11m
Deal found 10/30![Frontier logo]()
$178
This Super.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/305:01 am -
1 stop21h 07m
Mon 1/43:30 pm -
Nonstop2h 15m
Deal found 11/2![Frontier logo]()
$179
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Wed 12/22:51 pm -
1 stop24h 09m
Wed 12/98:30 am -
1 stop11h 37m
Deal found 11/3![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:31 pm -
Nonstop2h 44m
Fri 11/279:20 pm -
Nonstop2h 10m
Deal found 10/30![Frontier logo]()
$181
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Thu 12/37:34 am -
1 stop9h 33m
Sat 12/512:28 pm -
1 stop9h 43m
Deal found 11/3![Frontier logo]()
$181
This Cheapflightsfares deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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.
Wed 11/256:31 pm -
Nonstop2h 44m
Mon 11/305:40 am -
1 stop18h 13m
Deal found 11/1![Frontier logo]()
$183
This Expedia deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/108:40 am -
1 stop8h 26m
Sat 12/1212:28 pm -
1 stop9h 43m
Deal found 11/3![Frontier logo]()
$183
This Expedia deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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.
Wed 11/256:27 am -
1 stop18h 07m
Fri 11/279:20 pm -
Nonstop2h 10m
Deal found 11/1![Frontier logo]()
$184
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/1812:36 pm -
1 stop6h 54m
Mon 11/239:20 pm -
Nonstop2h 10m
Deal found 11/3![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 November 4, 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 November 4, 2026.
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/210:25 am -
1 stop4h 58m
Wed 12/910:40 am -
Nonstop2h 15m
Deal found 11/2![United Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 1/236:00 am -
2 stops11h 50m
Tue 1/268:15 am -
1 stop4h 15m
Deal found 11/1![Southwest logo]()
$224
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/88:01 am -
1 stop5h 23m
Sat 1/27:00 am -
1 stop4h 07m
Deal found 10/31![Delta logo]()
$274
This JetBlue deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 2/267:10 am -
1 stop7h 49m
Sun 2/282:55 pm -
1 stop6h 45m
Deal found 11/1![JetBlue logo]()
$301
This American Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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.
Sat 11/1410:40 am -
1 stop6h 43m
Sun 11/156:00 am -
1 stop4h 41m
Deal found 11/1![American Airlines logo]()
$373
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/16:00 am -
1 stop4h 37m
Tue 12/82:45 pm -
Nonstop2h 12m
Deal found 11/2![United Airlines logo]()
$238
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/1411:45 am -
Nonstop2h 15m
Thu 1/75:30 pm -
Nonstop2h 00m
Deal found 11/2![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/116:00 am -
1 stop4h 37m
Mon 1/46:40 pm -
1 stop3h 34m
Deal found 10/31![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/259:50 am -
Nonstop2h 36m
Fri 12/256:26 pm -
Nonstop2h 15m
Deal found 10/30![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/54:35 pm -
Nonstop1h 30m
Mon 12/71:40 pm -
Nonstop1h 25m
Deal found 11/3![Southwest logo]()
$277
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/184:58 pm -
Nonstop2h 36m
Tue 12/229:20 pm -
Nonstop2h 14m
Deal found 11/2![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/176:10 am -
1 stop4h 27m
Mon 12/216:15 pm -
1 stop3h 44m
Deal found 10/31![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 1/85:50 pm -
Nonstop1h 35m
Mon 1/115:40 pm -
Nonstop1h 25m
Deal found 11/2![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/36:10 am -
1 stop4h 27m
Mon 12/75:30 pm -
1 stop4h 48m
Deal found 11/2![Delta logo]()
$298
This JetBlue deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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.
Mon 11/166:00 am -
1 stop8h 42m
Fri 11/2011:00 am -
1 stop6h 26m
Deal found 11/1![JetBlue logo]()
$361
This Southwest deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 12/217:40 pm -
Nonstop1h 30m
Tue 1/121:40 pm -
Nonstop1h 20m
Deal found 11/1![Southwest logo]()
$277
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/116:00 pm -
Nonstop1h 48m
Mon 12/1410:45 am -
Nonstop1h 33m
Deal found 11/3![United Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/297:37 pm -
1 stop5h 24m
Fri 1/18:45 am -
1 stop4h 28m
Deal found 10/30![United Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 12/48:25 am -
Nonstop1h 35m
Mon 12/76:00 am -
1 stop4h 45m
Deal found 11/1![Southwest logo]()
$287
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/136:37 pm -
1 stop6h 30m
Sun 11/156:00 am -
2 stops7h 55m
Deal found 10/30![American Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 4/137:29 pm -
1 stop5h 21m
Sat 4/1711:10 am -
1 stop6h 09m
Deal found 10/30![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/118:00 pm -
Nonstop1h 30m
Mon 12/143:50 pm -
1 stop4h 05m
Deal found 11/3![Southwest logo]()
$287
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 1/222:41 pm -
Nonstop2h 29m
Wed 1/279:20 pm -
Nonstop2h 06m
Deal found 10/31![United Airlines logo]()
$291
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 1/289:20 am -
Nonstop2h 29m
Mon 2/19:20 pm -
Nonstop2h 06m
Deal found 11/1![United Airlines logo]()
$291
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/312:20 pm -
2 stops8h 25m
Mon 12/78:15 am -
Nonstop1h 25m
Deal found 11/2![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/1012:24 pm -
1 stop4h 53m
Sun 12/135:30 am -
1 stop5h 13m
Deal found 11/2![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/259:20 am -
Nonstop2h 29m
Thu 1/287:50 am -
Nonstop2h 06m
Deal found 10/30![United Airlines logo]()
$291
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 1/94:30 pm -
Nonstop1h 35m
Mon 1/1110:00 am -
2 stops10h 30m
Deal found 11/2![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/812:24 pm -
1 stop4h 53m
Sat 12/125:02 pm -
1 stop5h 08m
Deal found 11/3![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:50 pm -
Nonstop2h 28m
Thu 12/109:20 pm -
Nonstop2h 06m
Deal found 11/1![United Airlines logo]()
$291
Last-minute flights from Pennsylvania to IllinoisDiscover last-minute flight deals from Pennsylvania to Illinois. Data last updated November 4, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Illinois. Data last updated November 4, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/1812:36 pm -
1 stop6h 54m
Wed 11/259:20 pm -
Nonstop2h 10m
Deal found 11/3![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:31 pm -
Nonstop2h 44m
Fri 11/279:20 pm -
Nonstop2h 10m
Deal found 10/30![Frontier logo]()
$181
This Cheapflightsfares deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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.
Wed 11/256:31 pm -
Nonstop2h 44m
Mon 11/305:40 am -
1 stop18h 13m
Deal found 11/1![Frontier logo]()
$183
This Expedia deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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.
Wed 11/256:27 am -
1 stop18h 07m
Fri 11/279:20 pm -
Nonstop2h 10m
Deal found 11/1![Frontier logo]()
$184
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Wed 12/22:51 pm -
1 stop24h 09m
Wed 12/98:30 am -
1 stop11h 37m
Deal found 11/3![Frontier logo]()
$180
This Cheapflightsfares deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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.
Thu 12/36:45 pm -
Nonstop2h 44m
Sun 12/69:34 pm -
Nonstop2h 15m
Deal found 10/30![Frontier logo]()
$176
This CheapOair deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:38 pm -
1 stop5h 56m
Mon 12/79:29 pm -
Nonstop2h 15m
Deal found 11/1![Frontier logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Thu 12/37:34 am -
1 stop9h 33m
Sat 12/512:28 pm -
1 stop9h 43m
Deal found 11/3![Frontier logo]()
$181
This Justfly.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:34 am -
1 stop11h 29m
Mon 12/79:29 pm -
Nonstop2h 15m
Deal found 11/3![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/76:31 pm -
1 stop20h 59m
Wed 12/94:00 pm -
1 stop6h 11m
Deal found 10/30![Frontier logo]()
$178
This Expedia deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/108:40 am -
1 stop8h 26m
Sat 12/1212:28 pm -
1 stop9h 43m
Deal found 11/3![Frontier logo]()
$183
This Super.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/305:01 am -
1 stop21h 07m
Mon 1/43:30 pm -
Nonstop2h 15m
Deal found 11/2![Frontier logo]()
$179
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 November 4, 2026.
Search for one-way flight options from Pennsylvania to Illinois. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 1/108:00 am -
Nonstop2h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 12/114:31 pm -
1 stop5h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 1/226:37 pm -
1 stop6h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/24:38 pm -
1 stop5h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/221:38 pm -
Nonstop2h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Frontier logo]()
$92
This Trip.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 1/126:37 pm -
1 stop6h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$94
This Booking.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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.
Mon 12/76:50 pm -
Nonstop2h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/1612:31 pm -
1 stop9h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 12/226:32 am -
1 stop6h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$98
This Super.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/245:05 am -
1 stop18h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$99
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:34 am -
1 stop9h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$99
This Frontier deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:18 pm -
1 stop7h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$100
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 November 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $175 (Justfly.com) |
One-way from | $89 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $300 |
Good round-trip deal | $299 or less |
Good one-way deal | $167 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 7,457,451 searches. Data last updated November 4, 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
PhiladelphiaChicago
PHL Philadelphia - ORD Chicago O'Hare Intl
PHLORD
Philadelphia
Tue 12/8
6:24 am-8:00 am
Nonstop2h 36m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$100
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Tue 1/5
7:30 am-8:50 am
Nonstop2h 20m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$100
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Tue 12/8
7:30 am-8:50 am
Nonstop2h 20m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$100
PhiladelphiaChicago
PHL Philadelphia - ORD Chicago O'Hare Intl
PHLORD
Philadelphia
Thu 12/10
6:31 pm-7:20 am
1 stop13h 49m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$102
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Wed 1/13
6:05 am-2:45 pm
2 stops9h 40m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$115
PhiladelphiaMoline
PHL Philadelphia - MLI Moline Quad-City
PHLMLI
Philadelphia
Fri 1/22
6:41 pm-11:51 am
1 stop18h 10m
Moline Quad-City
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$117
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Fri 12/11
11:40 am-12:50 pm
Nonstop2h 10m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Thu 11/26
1:25 pm-2:35 pm
Nonstop2h 10m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Fri 1/22
1:25 pm-2:35 pm
Nonstop2h 10m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
PittsburghChicago
PIT Pittsburgh - ORD Chicago O'Hare Intl
PITORD
Pittsburgh
Tue 12/29
8:45 am-9:45 am
Nonstop2h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$139
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
PHL-MDW
PIT-ORD
PHL-MLI
PIT-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
PHL-ORD
PHL-MDW
PIT-ORD
PHL-MLI
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 $300). Flying from Pennsylvania to Illinois in June is currently the most expensive (average of $366). 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 November 4, 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 24% 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 November 4, 2026.
The most flights from USPA to USIL are scheduled on a Monday (44 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 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 $228 and $430 in December.The cheapest round-trip price found within the last 5 days was $175 on Frontier (Dec 4-Dec 7).
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 77 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 October 31, 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 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 November 4, 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.
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
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 November 4, 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 7,457,451 searches. Data last updated November 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$68 | Average$199 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$300 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$383 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$152 | Average$389 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$178 | Average$403 | FlexibilityNo cancel fee | On-time69% |