$92+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Oct 8 — Oct 151
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 September 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 September 8, 2026.
This CheapOair deal was found by Cheapflights users on 9/3. 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 10/111:54 am -
Nonstop2h 36m
Mon 10/57:28 pm -
1 stop10h 48m
Deal found 9/3![Frontier logo]()
$167
This CheapOair deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:22 pm -
1 stop26h 09m
Thu 10/224:41 pm -
Nonstop2h 23m
Deal found 9/4![Frontier logo]()
$168
This CheapOair deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:40 pm -
1 stop6h 43m
Mon 10/57:25 am -
Nonstop2h 24m
Deal found 9/4![Frontier logo]()
$169
This CheapOair deal was found by Cheapflights users on 9/3. 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.
Sat 10/179:09 pm -
Nonstop2h 30m
Mon 10/197:44 pm -
1 stop10h 37m
Deal found 9/3![Frontier logo]()
$170
This Super.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Wed 10/147:44 pm -
1 stop10h 27m
Deal found 9/4![Frontier logo]()
$172
This Expedia deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/109:09 pm -
Nonstop2h 30m
Sat 10/178:04 am -
1 stop13h 08m
Deal found 9/4![Frontier logo]()
$173
This Orbitz deal was found by Cheapflights users on 9/3. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/69:09 pm -
Nonstop2h 34m
Mon 11/97:50 pm -
1 stop10h 31m
Deal found 9/3![Frontier logo]()
$174
This Expedia deal was found by Cheapflights users on 9/3. 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.
Tue 9/2912:40 pm -
1 stop6h 43m
Wed 9/306:20 am -
1 stop10h 54m
Deal found 9/3![Frontier logo]()
$175
This CheapOair deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:32 pm -
1 stop25h 51m
Sun 9/277:25 am -
Nonstop2h 24m
Deal found 9/4![Frontier logo]()
$176
This CheapOair deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:48 pm -
1 stop26h 28m
Sun 12/67:45 pm -
Nonstop2h 15m
Deal found 9/4![Frontier logo]()
$177
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:09 pm -
Nonstop2h 34m
Mon 11/94:42 pm -
Nonstop2h 16m
Deal found 9/4![Frontier logo]()
$178
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 am -
1 stop14h 07m
Mon 10/264:41 pm -
Nonstop2h 23m
Deal found 9/3![Frontier logo]()
$179
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 September 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 September 8, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 1/74:59 pm -
Nonstop2h 34m
Thu 1/149:00 am -
Nonstop2h 14m
Deal found 9/7![United Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 9/3. 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 9/256:00 am -
Nonstop2h 15m
Mon 9/285:10 pm -
Nonstop2h 05m
Deal found 9/3![Southwest logo]()
$243
This JetBlue deal was found by Cheapflights users on 9/7. 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 9/291:00 pm -
1 stop7h 01m
Sat 10/39:38 am -
1 stop6h 51m
Deal found 9/7![JetBlue logo]()
$255
This Delta deal was found by Cheapflights users on 9/7. 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.
Thu 1/76:35 am -
1 stop7h 45m
Thu 1/147:10 am -
1 stop6h 49m
Deal found 9/7![Delta logo]()
$257
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:33 am -
1 stop4h 41m
Thu 10/11:17 pm -
Nonstop2h 07m
Deal found 9/5![American Airlines logo]()
$449
This Southwest deal was found by Cheapflights users on 9/3. 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.
Thu 9/246:00 am -
Nonstop2h 15m
Mon 9/287:50 pm -
Nonstop2h 05m
Deal found 9/3![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/2810:54 am -
Nonstop2h 35m
Sat 10/311:30 pm -
1 stop4h 21m
Deal found 9/7![United Airlines logo]()
$247
This JetBlue deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:15 pm -
Nonstop2h 55m
Wed 10/219:38 am -
1 stop6h 51m
Deal found 9/4![JetBlue logo]()
$256
This Delta deal was found by Cheapflights users on 9/7. 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.
Thu 1/76:35 am -
1 stop7h 45m
Tue 1/129:30 am -
1 stop6h 45m
Deal found 9/7![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 9/3. 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.
Thu 10/158:55 am -
Nonstop2h 30m
Sun 10/185:05 am -
Nonstop2h 05m
Deal found 9/3![Southwest logo]()
$243
This JetBlue deal was found by Cheapflights users on 9/7. 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 10/68:10 am -
Nonstop2h 49m
Tue 10/271:00 pm -
1 stop5h 59m
Deal found 9/7![JetBlue logo]()
$263
This Delta deal was found by Cheapflights users on 9/7. 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 10/67:30 am -
Nonstop2h 57m
Tue 10/66:00 pm -
Nonstop2h 40m
Deal found 9/7![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/266:00 am -
Nonstop2h 39m
Tue 9/293:00 pm -
Nonstop2h 25m
Deal found 9/7![United Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:00 pm -
Nonstop2h 25m
Mon 10/265:10 pm -
Nonstop2h 05m
Deal found 9/4![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 9/6. 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.
Wed 10/286:59 pm -
Nonstop2h 44m
Sat 10/3110:05 am -
Nonstop2h 21m
Deal found 9/6![Delta logo]()
$282
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Sat 10/248:27 pm -
Nonstop2h 44m
Tue 10/272:00 pm -
Nonstop2h 15m
Deal found 9/5![United Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:55 pm -
Nonstop2h 35m
Thu 11/125:00 am -
Nonstop2h 05m
Deal found 9/7![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 9/3. 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.
Thu 10/156:00 am -
Nonstop2h 36m
Fri 10/168:20 pm -
Nonstop2h 24m
Deal found 9/3![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Mon 10/58:40 pm -
Nonstop2h 48m
Tue 10/69:35 pm -
Nonstop2h 22m
Deal found 9/7![United Airlines logo]()
$290
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/33:15 pm -
Nonstop2h 45m
Sun 12/69:35 am -
Nonstop2h 05m
Deal found 9/4![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 9/3. 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.
Sun 10/116:59 am -
Nonstop2h 36m
Thu 10/156:00 am -
Nonstop2h 12m
Deal found 9/3![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 9/5. 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 10/149:05 pm -
Nonstop2h 25m
Thu 10/155:10 am -
Nonstop2h 05m
Deal found 9/5![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Tue 9/296:30 am -
Nonstop2h 14m
Wed 9/3011:15 am -
Nonstop2h 08m
Deal found 9/3![United Airlines logo]()
$299
This JetBlue deal was found by Cheapflights users on 9/6. 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 10/18:05 pm -
Nonstop2h 53m
Thu 10/812:38 pm -
Nonstop2h 22m
Deal found 9/6![JetBlue logo]()
$369
This KAYAK deal was found by Cheapflights users on 9/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:24 pm -
Nonstop2h 36m
Fri 9/185:00 pm -
Nonstop2h 06m
Deal found 9/3![American Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 9/7. 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 10/2711:22 am -
Nonstop2h 46m
Fri 10/308:20 pm -
Nonstop2h 24m
Deal found 9/7![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 10/81:10 pm -
Nonstop2h 16m
Mon 10/129:52 pm -
Nonstop2h 06m
Deal found 9/7![United Airlines logo]()
$304
This Southwest deal was found by Cheapflights users on 9/6. 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.
Thu 11/123:30 pm -
1 stop7h 30m
Sun 11/158:15 am -
Nonstop2h 10m
Deal found 9/6![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 9/5. 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.
Sat 10/246:15 am -
Nonstop2h 30m
Mon 10/265:50 pm -
1 stop4h 25m
Deal found 9/5![Southwest logo]()
$277
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Mon 10/57:45 pm -
Nonstop2h 47m
Wed 10/79:35 pm -
Nonstop2h 22m
Deal found 9/6![United Airlines logo]()
$307
Last-minute flights from Pennsylvania to IllinoisDiscover last-minute flight deals from Pennsylvania to Illinois. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Illinois. Data last updated September 8, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:50 pm -
1 stop26h 30m
Sat 10/104:41 pm -
Nonstop2h 23m
Deal found 9/5![Frontier logo]()
$194
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:12 am -
1 stop12h 47m
Wed 9/307:11 am -
1 stop11h 58m
Deal found 9/3![Frontier logo]()
$200
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:50 am -
1 stop11h 01m
Tue 9/296:25 am -
1 stop9h 53m
Deal found 9/4![Frontier logo]()
$200
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Thu 9/2412:30 pm -
1 stop8h 05m
Wed 9/306:00 am -
1 stop8h 34m
Deal found 9/3![Frontier logo]()
$202
This Orbitz deal was found by Cheapflights users on 9/3. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:50 am -
1 stop11h 01m
Tue 9/296:25 am -
1 stop9h 53m
Deal found 9/3![Frontier logo]()
$195
This Expedia deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:13 pm -
1 stop22h 07m
Wed 9/303:50 pm -
1 stop17h 37m
Deal found 9/4![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:50 am -
1 stop11h 33m
Wed 9/306:00 am -
1 stop8h 34m
Deal found 9/4![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:50 am -
1 stop10h 56m
Wed 9/306:25 am -
1 stop9h 53m
Deal found 9/4![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:50 am -
1 stop11h 33m
Sat 10/36:20 am -
1 stop9h 58m
Deal found 9/4![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:50 am -
1 stop11h 33m
Wed 10/146:00 am -
1 stop10h 13m
Deal found 9/4![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:50 am -
1 stop11h 41m
Mon 10/1910:26 am -
1 stop5h 47m
Deal found 9/4![Frontier logo]()
$199
This deal was found by Cheapflights users on 9/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:27 pm -
1 stop6h 33m
Thu 10/293:16 pm -
1 stop5h 28m
Deal found 9/3![American Airlines 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 September 8, 2026.
Search for one-way flight options from Pennsylvania to Illinois. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This Super.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:41 am -
1 stop10h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$92
This Booking.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:30 am -
1 stop11h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 9/3. 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 9/297:50 am -
1 stop11h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 9/3. 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 9/297:50 am -
1 stop10h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 9/5. 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.
Wed 9/3011:12 am -
1 stop12h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$96
This Expedia deal was found by Cheapflights users on 9/3. 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.
Wed 9/307:50 am -
1 stop11h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 9/6. 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.
Tue 10/1312:35 pm -
1 stop6h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 9/5. 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.
Fri 11/69:09 pm -
Nonstop2h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$98
This Booking.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:13 pm -
1 stop22h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 9/3. 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.
Thu 9/2411:54 am -
Nonstop2h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:40 pm -
1 stop6h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$100
This Expedia deal was found by Cheapflights users on 9/3. 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.
Fri 10/211:54 am -
Nonstop2h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$101
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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $167 (CheapOair) |
One-way from | $92 (Super.com) |
Popular in | June |
Cheapest in | January |
Average price | $285 |
Good round-trip deal | $293 or less |
Good one-way deal | $175 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 September 8, 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
IAD Washington, D.C. Dulles Intl - MDW Chicago Midway
IADMDW
Washington, D.C. Dulles Intl
Mon 9/28
7:50 am-5:51 pm
1 stop11h 01m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$115
PhiladelphiaChicago
PHL Philadelphia - ORD Chicago O'Hare Intl
PHLORD
Philadelphia
Mon 11/9
8:00 am-2:49 pm
1 stop7h 49m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
PhiladelphiaChicago
PHL Philadelphia - ORD Chicago O'Hare Intl
PHLORD
Philadelphia
Mon 10/12
6:10 am-10:29 am
1 stop5h 19m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
New YorkChicago
LGA New York LaGuardia - MDW Chicago Midway
LGAMDW
New York LaGuardia
Thu 10/22
4:20 pm-10:00 pm
1 stop6h 40m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$132
New YorkChicago
LGA New York LaGuardia - MDW Chicago Midway
LGAMDW
New York LaGuardia
Fri 9/25
1:30 pm-10:20 pm
1 stop9h 50m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$132
NewarkChicago
EWR Newark - ORD Chicago O'Hare Intl
EWRORD
Newark
Wed 9/30
7:17 am-9:00 am
Nonstop2h 43m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$134
New YorkChicago
LGA New York LaGuardia - ORD Chicago O'Hare Intl
LGAORD
New York LaGuardia
Tue 11/3
5:29 pm-7:30 pm
Nonstop3h 01m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$134
New YorkChicago
LGA New York LaGuardia - ORD Chicago O'Hare Intl
LGAORD
New York LaGuardia
Tue 11/3
4:30 pm-6:20 pm
Nonstop2h 50m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$134
New YorkChicago
LGA New York LaGuardia - ORD Chicago O'Hare Intl
LGAORD
New York LaGuardia
Wed 11/18
6:17 pm-8:08 pm
Nonstop2h 51m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$134
New YorkChicago
LGA New York LaGuardia - MDW Chicago Midway
LGAMDW
New York LaGuardia
Fri 10/16
9:00 pm-10:25 pm
Nonstop2h 25m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$134
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
IAD-MDW
LGA-MDW
EWR-ORD
JFK-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
IAD-MDW
LGA-MDW
EWR-ORD
What is the cheapest month to book a flight from Pennsylvania to Illinois?
Currently, November is the cheapest month in which you can book a flight from Pennsylvania to Illinois (average of $282). Flying from Pennsylvania to Illinois in June is currently the most expensive (average of $367). 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 September 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 at noon, which can drop the price by up to 23% 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 September 8, 2026.
The most flights from USPA to USIL are scheduled on a Thursday (49 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 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 $234 and $354 in October.The cheapest round-trip price found within the last 5 days was $167 on Frontier (Oct 1-Oct 5).
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 September 5, 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 September 8, 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
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
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 September 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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$189 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$133 | Average$314 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$362 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$137 | Average$382 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$171 | Average$377 | FlexibilityNo cancel fee | On-time69% |