$68+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Apr 9 — Apr 161
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 March 10, 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 March 10, 2026.
This Expedia deal was found by Cheapflights users on 3/5. 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.
Tue 3/176:48 am
PHL
- ORD
1 stop14h 03m
Multiple Airlines
Tue 3/246:36 pm
ORD
- PHL
1 stop20h 43m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$168
This Frontier deal was found by Cheapflights users on 3/5. 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 7/224:24 pm
PHL
- ORD
Nonstop2h 45m
Frontier
Wed 7/297:04 pm
ORD
- PHL
Nonstop2h 30m
Frontier
Deal found 3/5![Frontier logo]()
$170
This Trip.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:41 pm
PHL
- MDW
1 stop7h 41m
Frontier
Wed 4/222:15 pm
MDW
- PHL
1 stop9h 39m
Frontier
Deal found 3/8![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/236:12 pm
PHL
- ORD
1 stop15h 13m
Multiple Airlines
Wed 4/15:05 am
ORD
- PHL
1 stop7h 50m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$171
This CheapOair deal was found by Cheapflights users on 3/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:38 pm
PHL
- MDW
1 stop10h 26m
Frontier
Sun 5/179:14 am
MDW
- PHL
1 stop21h 27m
Frontier
Deal found 3/5![Frontier logo]()
$171
This Trip.com deal was found by Cheapflights users on 3/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:41 pm
PHL
- ORD
1 stop27h 18m
Frontier
Mon 4/271:22 pm
ORD
- PHL
1 stop9h 58m
Frontier
Deal found 3/7![Frontier logo]()
$172
This Expedia deal was found by Cheapflights users on 3/5. 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.
Thu 5/285:24 pm
PHL
- ORD
Nonstop2h 40m
Frontier
Sun 5/311:15 pm
ORD
- PHL
1 stop8h 57m
Frontier
Deal found 3/5![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Wed 5/69:17 am
PHL
- MDW
1 stop14h 02m
Multiple Airlines
Sat 5/96:00 am
MDW
- PHL
2 stops16h 10m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$173
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:12 pm
PHL
- ORD
1 stop7h 12m
Spirit Airlines
Wed 6/107:15 pm
ORD
- PHL
1 stop13h 34m
Spirit Airlines
Deal found 3/5![Spirit Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:24 pm
PHL
- MDW
2 stops25h 07m
Frontier
Mon 4/272:15 pm
MDW
- PHL
1 stop17h 56m
Frontier
Deal found 3/6![Frontier logo]()
$174
This Priceline deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:12 pm
PHL
- ORD
1 stop7h 12m
Multiple Airlines
Sat 4/254:28 pm
ORD
- PHL
1 stop7h 26m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$175
This Frontier deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/305:24 pm
PHL
- ORD
Nonstop2h 40m
Frontier
Wed 6/37:04 pm
ORD
- PHL
Nonstop2h 30m
Frontier
Deal found 3/8![Frontier logo]()
$176
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 March 10, 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 March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Wed 4/221:30 pm
PHL
- RFD
1 stop21h 17m
Multiple Airlines
Sun 4/2610:37 am
RFD
- PHL
1 stop22h 12m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$192
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Fri 5/86:10 am
PHL
- ORD
Nonstop2h 29m
United Airlines
Mon 5/119:54 pm
ORD
- PHL
Nonstop2h 05m
United Airlines
Deal found 3/8![United Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/12:15 pm
PHL
- MDW
Nonstop2h 10m
Southwest
Mon 5/47:40 am
MDW
- PHL
Nonstop1h 55m
Southwest
Deal found 3/6![Southwest logo]()
$197
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:00 am
PHL
- MDW
1 stop3h 47m
Delta
Sat 5/96:36 pm
MDW
- PHL
1 stop3h 31m
Delta
Deal found 3/5![Delta logo]()
$217
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:45 pm
PHL
- BMI
1 stop7h 14m
American Airlines
Sat 5/306:05 pm
BMI
- PHL
1 stop5h 26m
American Airlines
Deal found 3/9![American Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 3/7. 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 4/225:45 pm
PHL
- MDW
Nonstop2h 10m
Southwest
Wed 4/292:50 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Deal found 3/7![Southwest logo]()
$197
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/2710:00 am
PHL
- ORD
Nonstop2h 28m
United Airlines
Wed 4/299:04 am
ORD
- PHL
Nonstop2h 13m
United Airlines
Deal found 3/6![United Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 6/36:10 am
PHL
- RFD
1 stop29h 27m
Multiple Airlines
Sun 6/711:27 am
RFD
- PHL
1 stop11h 10m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$232
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:35 pm
PHL
- ORD
Nonstop2h 29m
United Airlines
Sun 5/106:55 am
ORD
- PHL
Nonstop2h 04m
United Airlines
Deal found 3/9![United Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/242:15 pm
PHL
- MDW
Nonstop2h 10m
Southwest
Sun 4/267:40 am
MDW
- PHL
Nonstop1h 55m
Southwest
Deal found 3/9![Southwest logo]()
$217
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Thu 4/236:17 am
PHL
- ORD
Nonstop2h 28m
United Airlines
Sun 4/267:15 am
ORD
- PHL
Nonstop2h 13m
United Airlines
Deal found 3/9![United Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/242:15 pm
PHL
- MDW
Nonstop2h 10m
Southwest
Fri 5/19:00 am
MDW
- PHL
1 stop6h 45m
Southwest
Deal found 3/9![Southwest logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Wed 5/205:28 pm
PHL
- RFD
1 stop18h 09m
Multiple Airlines
Sun 5/2411:27 am
RFD
- PHL
1 stop8h 29m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$259
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:40 pm
PHL
- BMI
1 stop5h 08m
American Airlines
Sat 3/285:00 am
BMI
- PHL
1 stop3h 40m
American Airlines
Deal found 3/9![American Airlines logo]()
$299
This Southwest deal was found by Cheapflights users on 3/7. 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.
Fri 4/244:30 pm
PHL
- MDW
2 stops7h 15m
Southwest
Mon 4/2711:40 am
MDW
- PHL
2 stops10h 05m
Southwest
Deal found 3/7![Southwest logo]()
$233
This United Airlines deal was found by Cheapflights users on 3/9. 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 5/1210:38 am
PHL
- ORD
1 stop6h 52m
United Airlines
Tue 5/196:55 am
ORD
- PHL
Nonstop2h 04m
United Airlines
Deal found 3/9![United Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Sat 5/236:12 pm
PHL
- RFD
1 stop17h 25m
Multiple Airlines
Thu 5/2811:27 am
RFD
- PHL
1 stop8h 29m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$267
This American Airlines deal was found by Cheapflights users on 3/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:18 am
PHL
- BMI
1 stop6h 45m
American Airlines
Wed 5/275:00 am
BMI
- PHL
1 stop5h 38m
American Airlines
Deal found 3/8![American Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 3/8. 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.
Fri 5/84:30 pm
PHL
- MDW
2 stops7h 20m
Southwest
Mon 5/119:00 am
MDW
- PHL
2 stops12h 45m
Southwest
Deal found 3/8![Southwest logo]()
$233
This United Airlines deal was found by Cheapflights users on 3/8. 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 4/2510:00 am
PHL
- ORD
Nonstop2h 28m
United Airlines
Tue 4/282:20 pm
ORD
- PHL
Nonstop2h 13m
United Airlines
Deal found 3/8![United Airlines logo]()
$255
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:12 pm
PHL
- EVV
1 stop7h 42m
American Airlines
Sat 4/256:56 pm
EVV
- PHL
1 stop4h 41m
American Airlines
Deal found 3/9![American Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 3/6. 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.
Wed 5/2711:35 am
PHL
- MDW
Nonstop2h 05m
Southwest
Mon 6/13:25 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Deal found 3/6![Southwest logo]()
$251
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:30 am
PHL
- EVV
1 stop4h 54m
Delta
Sun 4/265:58 pm
EVV
- PHL
1 stop6h 01m
Delta
Deal found 3/5![Delta logo]()
$407
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/245:00 pm
PHL
- ORD
Nonstop2h 28m
United Airlines
Mon 4/277:15 am
ORD
- PHL
Nonstop2h 13m
United Airlines
Deal found 3/9![United Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Thu 5/218:01 pm
PHL
- RFD
1 stop24h 12m
Multiple Airlines
Thu 5/2811:27 am
RFD
- PHL
1 stop8h 29m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 3/9. 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.
Thu 6/115:30 am
PHL
- EVV
1 stop4h 56m
Delta
Sun 6/141:30 pm
EVV
- PHL
1 stop6h 01m
Delta
Deal found 3/9![Delta logo]()
$407
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1812:21 pm
PHL
- MLI
1 stop7h 11m
American Airlines
Sat 3/217:00 am
MLI
- PHL
1 stop6h 44m
American Airlines
Deal found 3/9![American Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 3/7. 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 4/47:45 pm
PHL
- ORD
1 stop4h 58m
United Airlines
Fri 4/102:20 pm
ORD
- PHL
Nonstop2h 13m
United Airlines
Deal found 3/7![United Airlines logo]()
$272
This Southwest deal was found by Cheapflights users on 3/8. 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.
Sun 5/38:00 am
PHL
- MDW
Nonstop2h 10m
Southwest
Mon 5/46:45 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Deal found 3/8![Southwest logo]()
$280
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/27:36 pm
PHL
- STL
1 stop5h 22m
Delta
Sun 4/56:32 am
STL
- PHL
1 stop4h 09m
Delta
Deal found 3/5![Delta logo]()
$424
Last-minute flights from Philadelphia to IllinoisDiscover last-minute flight deals from Philadelphia to Illinois. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Illinois. Data last updated March 10, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 3/5. 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.
Tue 3/176:48 am
PHL
- ORD
1 stop14h 03m
Multiple Airlines
Tue 3/246:36 pm
ORD
- PHL
1 stop20h 43m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/236:12 pm
PHL
- ORD
1 stop15h 13m
Multiple Airlines
Wed 4/15:05 am
ORD
- PHL
1 stop7h 50m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2612:28 pm
PHL
- ORD
Nonstop2h 36m
Multiple Airlines
Mon 3/306:10 pm
ORD
- PHL
1 stop13h 29m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$176
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/510:19 am
PHL
- ORD
Nonstop2h 34m
Frontier
Fri 4/1011:55 am
ORD
- PHL
1 stop10h 58m
Frontier
Deal found 3/5![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 4/76:48 am
PHL
- MDW
2 stops16h 31m
Multiple Airlines
Tue 4/142:15 pm
MDW
- PHL
1 stop9h 39m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$176
This Frontier deal was found by Cheapflights users on 3/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/812:00 pm
PHL
- ORD
1 stop11h 39m
Frontier
Mon 4/136:15 pm
ORD
- PHL
Nonstop2h 14m
Frontier
Deal found 3/6![Frontier logo]()
$173
This Trip.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:41 pm
PHL
- MDW
1 stop7h 41m
Frontier
Wed 4/222:15 pm
MDW
- PHL
1 stop9h 39m
Frontier
Deal found 3/8![Frontier logo]()
$170
This Super.com deal was found by Cheapflights users on 3/8. 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 4/189:17 am
PHL
- MDW
1 stop10h 20m
Frontier
Mon 4/209:14 am
MDW
- PHL
1 stop24h 24m
Frontier
Deal found 3/8![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:24 pm
PHL
- MDW
2 stops25h 07m
Frontier
Mon 4/272:15 pm
MDW
- PHL
1 stop17h 56m
Frontier
Deal found 3/6![Frontier logo]()
$174
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:05 am
PHL
- ORD
1 stop7h 27m
Multiple Airlines
Mon 4/277:15 pm
ORD
- PHL
1 stop13h 34m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$170
This Trip.com deal was found by Cheapflights users on 3/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:41 pm
PHL
- ORD
1 stop27h 18m
Frontier
Mon 4/271:22 pm
ORD
- PHL
1 stop9h 58m
Frontier
Deal found 3/7![Frontier logo]()
$172
This Priceline deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:12 pm
PHL
- ORD
1 stop7h 12m
Multiple Airlines
Sat 4/254:28 pm
ORD
- PHL
1 stop7h 26m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$175
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 March 10, 2026.
Search for one-way flight options from Philadelphia to Illinois. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 5/197:10 pm
PHL
- STL
1 stop12h 40m
Frontier
Deal found 3/6![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 5/57:10 pm
PHL
- STL
1 stop12h 40m
Frontier
Deal found 3/6![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:10 am
PHL
- ORD
1 stop10h 04m
Frontier
Deal found 3/6![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:10 pm
PHL
- STL
1 stop12h 40m
Frontier
Deal found 3/5![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:10 am
PHL
- RFD
1 stop29h 27m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$77
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:58 am
PHL
- MDW
1 stop8h 33m
Frontier
Deal found 3/6![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 5/2612:25 pm
PHL
- ORD
1 stop27h 49m
Frontier
Deal found 3/6![Frontier logo]()
$78
This Super.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:47 am
PHL
- ORD
1 stop8h 00m
Frontier
Deal found 3/5![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:41 pm
PHL
- MDW
1 stop7h 41m
Frontier
Deal found 3/6![Frontier logo]()
$79
This Orbitz deal was found by Cheapflights users on 3/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:22 pm
PHL
- ORD
1 stop10h 30m
Frontier
Deal found 3/9![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:30 pm
PHL
- RFD
1 stop21h 17m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$80
This Frontier deal was found by Cheapflights users on 3/5. 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.
Sat 5/301:43 pm
PHL
- MDW
1 stop7h 23m
Frontier
Deal found 3/5![Frontier logo]()
$80
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 March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $170 (Frontier) |
One-way from | $68 (Kiwi.com) |
Popular in | March |
Cheapest in | January |
Average price | $357 |
Good round-trip deal | $328 or less |
Good one-way deal | $189 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 March 10, 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 - RFD
PHLRFD
Philadelphia
Wed 4/22
1:30 pm-9:47 am
1 stop21h 17m
Chicago Greater Rockford
Sun 4/26
10:37 am-9:49 am
1 stop22h 12m
$192
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Fri 5/8
6:10 am-7:39 am
Nonstop2h 29m
Chicago O'Hare Intl
Mon 5/11
9:54 pm-12:59 am
Nonstop2h 05m
$197
Quickest round-trip
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Fri 5/1
2:15 pm-3:25 pm
Nonstop2h 10m
Chicago Midway
Mon 5/4
7:40 am-10:35 am
Nonstop1h 55m
$197
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Wed 4/22
5:45 pm-6:55 pm
Nonstop2h 10m
Chicago Midway
Wed 4/29
2:50 pm-5:50 pm
Nonstop2h 00m
$197
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Mon 4/27
10:00 am-11:28 am
Nonstop2h 28m
Chicago O'Hare Intl
Wed 4/29
9:04 am-12:17 pm
Nonstop2h 13m
$202
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Sun 5/3
6:00 am-8:47 am
1 stop3h 47m
Chicago Midway
Sat 5/9
6:36 pm-11:07 pm
1 stop3h 31m
$217
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Fri 5/8
8:35 pm-10:04 pm
Nonstop2h 29m
Chicago O'Hare Intl
Sun 5/10
6:55 am-9:59 am
Nonstop2h 04m
$217
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Fri 4/24
2:15 pm-3:25 pm
Nonstop2h 10m
Chicago Midway
Sun 4/26
7:40 am-10:35 am
Nonstop1h 55m
$217
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Thu 4/23
6:17 am-7:45 am
Nonstop2h 28m
Chicago O'Hare Intl
Sun 4/26
7:15 am-10:28 am
Nonstop2h 13m
$217
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Fri 4/24
2:15 pm-3:25 pm
Nonstop2h 10m
Chicago Midway
Fri 5/1
9:00 am-4:45 pm
1 stop6h 45m
$227
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-STL
PHL-ORD
PHL-RFD
PHL-MDW
PHL-BMI
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-STL
PHL-ORD
PHL-RFD
PHL-MDW
What is the cheapest month to book a flight from Philadelphia to Illinois?
Currently, December is the cheapest month in which you can book a flight from Philadelphia to Illinois (average of $48). Flying from Philadelphia to Illinois in July is currently the most expensive (average of $115). 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 March 10, 2026.
It’s optimal to fly from Philadelphia to Illinois in the evening. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight at noon.
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 February 21, 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.
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 March 10, 2026.
The most flights from PHL to USIL are scheduled on a Monday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).
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 March 10, 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.
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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
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Philadelphia and Illinois flights
Browse other Philadelphia and Illinois flight options. Last updated on March 10, 2026.
Popular flight searches
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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 March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$74 | Average$175 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$347 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$155 | Average$371 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$311 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$163 | Average$418 | FlexibilityNo cancel fee | On-time71% |