$92+ Cheap flights from Philadelphia (PHL) 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Jul 11 — Jul 181
Round-trip
1 adult, Economy
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Cheapest flights from Philadelphia to IllinoisExplore the most affordable flight options available from Philadelphia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
Explore the most affordable flight options available from Philadelphia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
This Super.com deal was found by Cheapflights users on 6/7. 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 7/111:32 pm
PHL
- ORD
1 stop7h 21m
Frontier
Sat 7/258:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/7![Frontier logo]()
$200
This Frontier deal was found by Cheapflights users on 6/7. 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.
Mon 7/136:11 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Sat 7/188:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/7![Frontier logo]()
$201
This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:45 am
PHL
- ORD
1 stop9h 37m
Multiple Airlines
Mon 9/146:50 am
ORD
- PHL
Nonstop2h 10m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$202
This Travelocity deal was found by Cheapflights users on 6/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:05 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Thu 8/138:05 am
ORD
- PHL
1 stop8h 02m
Frontier
Deal found 6/8![Frontier logo]()
$203
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:00 pm
PHL
- MDW
1 stop6h 31m
Delta
Tue 9/151:14 pm
MDW
- PHL
1 stop5h 05m
Delta
Deal found 6/8![Delta logo]()
$203
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:56 pm
PHL
- ORD
Nonstop2h 30m
United Airlines
Tue 8/189:05 am
ORD
- PHL
Nonstop2h 18m
United Airlines
Deal found 6/8![United Airlines logo]()
$204
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:55 am
PHL
- MDW
Nonstop2h 00m
Southwest
Sat 9/1911:45 am
MDW
- PHL
Nonstop1h 55m
Southwest
Deal found 6/7![Southwest logo]()
$204
This Delta deal was found by Cheapflights users on 6/9. 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 8/113:58 pm
PHL
- ORD
1 stop5h 57m
Delta
Tue 8/186:40 am
ORD
- PHL
1 stop5h 46m
Delta
Deal found 6/9![Delta logo]()
$205
This Delta deal was found by Cheapflights users on 6/9. 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.
Wed 9/236:15 am
PHL
- MDW
1 stop3h 52m
Delta
Tue 9/291:14 pm
MDW
- PHL
1 stop5h 05m
Delta
Deal found 6/9![Delta logo]()
$205
This Super.com deal was found by Cheapflights users on 6/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/155:06 pm
PHL
- ORD
Nonstop2h 41m
Frontier
Thu 6/188:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Deal found 6/9![Frontier logo]()
$206
This Mytrip deal was found by Cheapflights users on 6/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:05 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Mon 7/208:05 am
ORD
- PHL
1 stop15h 34m
Frontier
Deal found 6/7![Frontier logo]()
$207
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:30 am
PHL
- ORD
1 stop12h 25m
Frontier
Sun 9/67:52 pm
ORD
- PHL
Nonstop2h 28m
Frontier
Deal found 6/10![Frontier logo]()
$208
Best flights from Philadelphia to IllinoisDiscover carefully curated flight deals from Philadelphia to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
Discover carefully curated flight deals from Philadelphia to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
This Delta deal was found by Cheapflights users on 6/8. 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.
Sat 9/269:00 am
PHL
- ORD
1 stop6h 32m
Delta
Tue 9/299:00 am
ORD
- PHL
1 stop6h 42m
Delta
Deal found 6/8![Delta logo]()
$223
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:30 am
PHL
- ORD
1 stop4h 57m
United Airlines
Sat 9/58:45 am
ORD
- PHL
1 stop4h 36m
United Airlines
Deal found 6/10![United Airlines logo]()
$224
This Southwest deal was found by Cheapflights users on 6/9. 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 9/162:45 pm
PHL
- MDW
2 stops8h 35m
Southwest
Sat 9/196:35 am
MDW
- PHL
1 stop5h 50m
Southwest
Deal found 6/9![Southwest logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Wed 7/292:59 pm
PHL
- RFD
1 stop20h 38m
Multiple Airlines
Mon 8/37:50 pm
RFD
- PHL
1 stop12h 02m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$252
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 9/1912:39 pm
PHL
- PIA
1 stop5h 19m
American Airlines
Sun 9/275:28 pm
PIA
- PHL
1 stop5h 44m
American Airlines
Deal found 6/11![American Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 6/10. 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.
Thu 8/2712:36 pm
PHL
- ORD
1 stop6h 53m
Delta
Sat 8/296:40 am
ORD
- PHL
1 stop5h 04m
Delta
Deal found 6/10![Delta logo]()
$243
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:00 am
PHL
- ORD
Nonstop2h 30m
United Airlines
Sat 7/42:30 pm
ORD
- PHL
Nonstop2h 23m
United Airlines
Deal found 6/10![United Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 6/9. 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.
Mon 8/314:40 pm
PHL
- MDW
1 stop7h 00m
Southwest
Wed 9/212:35 pm
MDW
- PHL
2 stops8h 15m
Southwest
Deal found 6/9![Southwest logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Wed 7/152:59 pm
PHL
- RFD
1 stop20h 38m
Multiple Airlines
Sun 7/1911:27 am
RFD
- PHL
1 stop12h 12m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$267
This Delta deal was found by Cheapflights users on 6/10. 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.
Thu 9/105:12 pm
PHL
- ORD
1 stop7h 45m
Delta
Mon 9/145:10 pm
ORD
- PHL
1 stop5h 02m
Delta
Deal found 6/10![Delta logo]()
$243
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:45 pm
PHL
- MDW
Nonstop2h 05m
Southwest
Fri 9/252:55 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Deal found 6/8![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 6/10. 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 8/296:05 am
PHL
- MDW
1 stop4h 12m
Delta
Sat 8/296:42 pm
MDW
- PHL
1 stop3h 44m
Delta
Deal found 6/10![Delta logo]()
$243
This United Airlines deal was found by Cheapflights users on 6/7. 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 8/18:05 am
PHL
- MLI
1 stop6h 51m
United Airlines
Sat 8/83:47 pm
MLI
- PHL
1 stop4h 32m
United Airlines
Deal found 6/7![United Airlines logo]()
$276
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:35 pm
PHL
- MDW
Nonstop2h 25m
Southwest
Sat 7/410:30 am
MDW
- PHL
2 stops7h 40m
Southwest
Deal found 6/11![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:15 am
PHL
- MLI
1 stop5h 57m
Delta
Wed 7/225:05 pm
MLI
- PHL
1 stop6h 54m
Delta
Deal found 6/7![Delta logo]()
$261
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:05 am
PHL
- MLI
1 stop6h 51m
United Airlines
Thu 8/137:00 pm
MLI
- PHL
1 stop4h 59m
United Airlines
Deal found 6/6![United Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Sat 10/101:52 pm
PHL
- RFD
1 stop20h 48m
Multiple Airlines
Sun 10/1810:30 am
RFD
- PHL
1 stop12h 13m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 6/6. 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.
Sat 7/48:50 am
PHL
- MDW
1 stop6h 35m
Southwest
Wed 7/81:10 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Deal found 6/6![Southwest logo]()
$277
This American Airlines deal was found by Cheapflights users on 6/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:42 am
PHL
- MLI
1 stop4h 41m
American Airlines
Thu 8/136:00 am
MLI
- PHL
2 stops8h 05m
American Airlines
Deal found 6/6![American Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:35 am
PHL
- ORD
1 stop4h 29m
Delta
Thu 9/175:10 pm
ORD
- PHL
1 stop5h 02m
Delta
Deal found 6/11![Delta logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:16 pm
PHL
- RFD
2 stops16h 57m
Multiple Airlines
Thu 7/2311:27 am
RFD
- PHL
1 stop12h 12m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$328
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:05 pm
PHL
- ORD
1 stop7h 25m
United Airlines
Mon 9/76:59 am
ORD
- PHL
Nonstop2h 08m
United Airlines
Deal found 6/10![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:05 pm
PHL
- MDW
Nonstop2h 10m
Southwest
Tue 7/213:40 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Deal found 6/10![Southwest logo]()
$287
This Delta deal was found by Cheapflights users on 6/8. 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 8/212:31 pm
PHL
- ORD
1 stop7h 24m
Delta
Mon 8/245:20 pm
ORD
- PHL
1 stop5h 06m
Delta
Deal found 6/8![Delta logo]()
$262
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Wed 7/221:31 pm
PHL
- MLI
1 stop6h 25m
United Airlines
Sun 7/266:30 pm
MLI
- PHL
1 stop5h 27m
United Airlines
Deal found 6/9![United Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:12 pm
PHL
- ORD
1 stop7h 47m
Delta
Fri 7/33:22 pm
ORD
- PHL
1 stop4h 57m
Delta
Deal found 6/6![Delta logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:16 pm
PHL
- RFD
2 stops16h 57m
Multiple Airlines
Thu 7/211:27 am
RFD
- PHL
1 stop12h 17m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 6/7. 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 8/16:05 pm
PHL
- MDW
Nonstop2h 10m
Southwest
Tue 8/46:00 am
MDW
- PHL
1 stop6h 10m
Southwest
Deal found 6/7![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 7/286:00 am
PHL
- PAH
1 stop7h 52m
United Airlines
Sun 8/25:00 am
PAH
- PHL
1 stop4h 30m
United Airlines
Deal found 6/9![United Airlines logo]()
$304
This Southwest deal was found by Cheapflights users on 6/9. 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 10/1412:50 pm
PHL
- MDW
1 stop7h 30m
Southwest
Sun 10/183:35 pm
MDW
- PHL
Nonstop1h 55m
Southwest
Deal found 6/9![Southwest logo]()
$300
Last-minute flights from Philadelphia to IllinoisDiscover last-minute flight deals from Philadelphia to Illinois. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Illinois. Data last updated June 11, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 6/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/155:06 pm
PHL
- ORD
Nonstop2h 41m
Frontier
Thu 6/188:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Deal found 6/9![Frontier logo]()
$206
This Expedia deal was found by Cheapflights users on 6/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:06 pm
PHL
- ORD
Nonstop2h 41m
Multiple Airlines
Thu 6/2510:56 am
ORD
- PHL
1 stop8h 04m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Mon 7/68:30 am
PHL
- ORD
1 stop24h 23m
Frontier
Mon 7/138:58 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/10![Frontier logo]()
$210
This Super.com deal was found by Cheapflights users on 6/7. 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 7/111:32 pm
PHL
- ORD
1 stop7h 21m
Frontier
Sat 7/258:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/7![Frontier logo]()
$200
This Expedia deal was found by Cheapflights users on 6/7. 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.
Sat 7/116:00 am
PHL
- ORD
1 stop7h 15m
Frontier
Sat 7/188:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/7![Frontier logo]()
$203
This Frontier deal was found by Cheapflights users on 6/7. 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.
Mon 7/136:11 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Sat 7/188:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/7![Frontier logo]()
$201
This Super.com deal was found by Cheapflights users on 6/6. 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.
Mon 7/134:49 pm
PHL
- ORD
1 stop7h 21m
Frontier
Sat 7/258:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/6![Frontier logo]()
$205
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:30 am
PHL
- ORD
1 stop12h 23m
Frontier
Thu 7/168:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/10![Frontier logo]()
$211
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/176:11 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Sat 7/258:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/9![Frontier logo]()
$208
This CheapOair deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/176:11 pm
PHL
- ORD
Nonstop2h 42m
Multiple Airlines
Sat 7/251:09 pm
ORD
- PHL
1 stop5h 51m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$209
This Frontier deal was found by Cheapflights users on 6/7. 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.
Sat 7/186:05 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Sat 7/251:50 pm
ORD
- PHL
1 stop7h 38m
Frontier
Deal found 6/7![Frontier logo]()
$202
This Mytrip deal was found by Cheapflights users on 6/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:05 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Mon 7/208:05 am
ORD
- PHL
1 stop15h 34m
Frontier
Deal found 6/7![Frontier logo]()
$207
One-way flights from Philadelphia to IllinoisSearch for one-way flight options from Philadelphia to Illinois. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
Search for one-way flight options from Philadelphia to Illinois. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Trip.com deal was found by Cheapflights users on 6/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:30 am
PHL
- STL
1 stop12h 00m
Frontier
Deal found 6/9![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Fri 8/144:40 pm
PHL
- STL
1 stop17h 17m
Frontier
Deal found 6/10![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 8/44:30 pm
PHL
- STL
1 stop17h 27m
Frontier
Deal found 6/10![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:30 am
PHL
- STL
1 stop12h 07m
Frontier
Deal found 6/7![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:05 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Deal found 6/8![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 7/34:35 pm
PHL
- STL
1 stop17h 17m
Frontier
Deal found 6/7![Frontier logo]()
$97
This Super.com deal was found by Cheapflights users on 6/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:05 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Deal found 6/9![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Sun 7/56:30 am
PHL
- STL
1 stop27h 27m
Frontier
Deal found 6/10![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Wed 8/54:30 pm
PHL
- STL
1 stop26h 07m
Frontier
Deal found 6/10![Frontier logo]()
$100
This Super.com deal was found by Cheapflights users on 6/6. 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.
Mon 7/276:11 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Deal found 6/6![Frontier logo]()
$101
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:43 am
PHL
- ORD
1 stop7h 08m
Delta
Deal found 6/8![Delta logo]()
$102
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:15 am
PHL
- MDW
1 stop5h 44m
Delta
Deal found 6/8![Delta logo]()
$102
Find flight deals from Philadelphia to Illinois
Keep the following information in mind while searching for Philadelphia to Illinois flight deals. Data was last updated June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $200 (Super.com) |
One-way from | $92 (Trip.com) |
Popular in | March |
Cheapest in | January |
Average price | $333 |
Good round-trip deal | $311 or less |
Good one-way deal | $165 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia 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 June 11, 2026.
Use the filters below to find and compare flights from Philadelphia to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Sat 9/26
9:00 am-2:32 pm
1 stop6h 32m
Chicago O'Hare Intl
Tue 9/29
9:00 am-4:42 pm
1 stop6h 42m
$223
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Wed 9/2
10:30 am-2:27 pm
1 stop4h 57m
Chicago O'Hare Intl
Sat 9/5
8:45 am-2:21 pm
1 stop4h 36m
$224
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Wed 9/16
2:45 pm-10:20 pm
2 stops8h 35m
Chicago Midway
Sat 9/19
6:35 am-1:25 pm
1 stop5h 50m
$229
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Thu 8/27
12:36 pm-6:29 pm
1 stop6h 53m
Chicago O'Hare Intl
Sat 8/29
6:40 am-12:44 pm
1 stop5h 04m
$243
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Thu 9/10
5:12 pm-11:57 pm
1 stop7h 45m
Chicago O'Hare Intl
Mon 9/14
5:10 pm-11:12 pm
1 stop5h 02m
$243
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Sat 8/29
6:05 am-9:17 am
1 stop4h 12m
Chicago Midway
Sat 8/29
6:42 pm-11:26 pm
1 stop3h 44m
$243
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Wed 7/1
6:00 am-7:30 am
Nonstop2h 30m
Chicago O'Hare Intl
Sat 7/4
2:30 pm-5:53 pm
Nonstop2h 23m
$247
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Mon 8/31
4:40 pm-10:40 pm
1 stop7h 00m
Chicago Midway
Wed 9/2
12:35 pm-9:50 pm
2 stops8h 15m
$250
PhiladelphiaChicago
PHL - RFD
PHLRFD
Philadelphia
Wed 7/29
2:59 pm-10:37 am
1 stop20h 38m
Chicago Greater Rockford
Mon 8/3
7:50 pm-8:52 am
1 stop12h 02m
$252
Quickest round-trip
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Tue 9/22
1:45 pm-2:50 pm
Nonstop2h 05m
Chicago Midway
Fri 9/25
2:55 pm-5:55 pm
Nonstop2h 00m
$257
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Philadelphia to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Philadelphia with our price prediction graph.
PHL-ORD
PHL-MDW
PHL-RFD
PHL-PIA
PHL-MLI
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 Philadelphia to Illinois
PHL-USIL
PHL-ORD
PHL-MDW
PHL-RFD
PHL-PIA
What is the cheapest month to book a flight from Philadelphia to Illinois?
Currently, February is the cheapest month in which you can book a flight from Philadelphia to Illinois (average of $40). Flying from Philadelphia to Illinois in January is currently the most expensive (average of $788). 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 PHL to IL?
Find hourly flight availability from Philadelphia 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 June 11, 2026.
It’s optimal to fly from Philadelphia to Illinois in the evening. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Philadelphia to Illinois
Explore weekly flight availability from Philadelphia 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 June 11, 2026.
The most flights from PHL to USIL are scheduled on a Thursday (54 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).
How much does it cost to fly round-trip from Philadelphia to Illinois?
How far ahead should I book a flight from Philadelphia to Illinois?
Booking 31 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Philadelphia to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Illinois. Price data was last updated on June 8, 2026.
Travelers seeking maximum savings on their Philadelphia to Illinois flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated June 11, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Philadelphia to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
7.9
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
7.9
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
7.9
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
7.9
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
7.9
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
7.9
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Philadelphia 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 Philadelphia to Illinois
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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Philadelphia to Illinois by cabin class
Find flights from Philadelphia to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Philadelphia and Illinois flights
Browse other Philadelphia and Illinois flight options. Last updated on June 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Philadelphia to Illinois flights
Consider these flights traveling from Philadelphia to Illinois.
Top 5 airlines flying from Philadelphia to Illinois
Discover the top 5 airlines that operate flights from Philadelphia 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$77 | Average$174 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$266 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$158 | Average$334 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$160 | Average$386 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$162 | Average$344 | FlexibilityNo cancel fee | On-time69% |