$99+ Cheap flights from Illinois to Philadelphia (PHL)
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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHL
Nov 4 — Nov 111
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Philadelphia 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 Illinois to PhiladelphiaExplore the most affordable flight options available from Illinois to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 5, 2026.
Explore the most affordable flight options available from Illinois to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 5, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:41 pm -
Nonstop2h 23m
Sun 10/255:50 am -
1 stop19h 34m
Deal found 9/30![Frontier logo]()
$171
This Frontier deal was found by Cheapflights users on 10/4. 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.
Fri 10/234:41 pm -
Nonstop2h 23m
Thu 10/299:09 pm -
Nonstop2h 34m
Deal found 10/4![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/194:42 pm -
Nonstop2h 22m
Tue 12/14:38 pm -
1 stop15h 37m
Deal found 10/2![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:35 pm -
1 stop10h 36m
Thu 12/36:45 pm -
Nonstop2h 44m
Deal found 10/2![Frontier logo]()
$174
This Cheapflightsfares deal was found by Cheapflights users on 10/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:41 pm -
Nonstop2h 23m
Sat 10/249:09 pm -
Nonstop2h 30m
Deal found 10/4![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:41 pm -
Nonstop2h 23m
Sat 10/249:09 pm -
Nonstop2h 30m
Deal found 10/1![Frontier logo]()
$176
This Expedia deal was found by Cheapflights users on 10/5. 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.
Mon 11/96:42 pm -
1 stop11h 39m
Sat 11/1412:36 pm -
1 stop12h 11m
Deal found 10/5![Frontier logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 10/5. 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.
Sat 10/317:15 am -
1 stop10h 04m
Sun 11/19:09 pm -
Nonstop2h 34m
Deal found 10/5![Frontier logo]()
$177
This Expedia deal was found by Cheapflights users on 10/5. 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 11/56:42 pm -
1 stop11h 39m
Mon 11/95:14 pm -
1 stop7h 33m
Deal found 10/5![Frontier logo]()
$178
This Frontier deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:42 pm -
Nonstop2h 22m
Fri 11/206:31 pm -
Nonstop2h 44m
Deal found 10/2![Frontier logo]()
$178
This Super.com deal was found by Cheapflights users on 10/5. 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.
Fri 11/64:42 pm -
Nonstop2h 22m
Sun 11/89:09 pm -
Nonstop2h 34m
Deal found 10/5![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:42 pm -
Nonstop2h 22m
Sat 11/75:45 pm -
1 stop6h 46m
Deal found 9/30![Frontier logo]()
$181
Best flights from Illinois to PhiladelphiaDiscover carefully curated flight deals from Illinois to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 5, 2026.
Discover carefully curated flight deals from Illinois to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 5, 2026.
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:35 pm -
Nonstop2h 12m
Sat 10/316:00 am -
Nonstop2h 36m
Deal found 10/1![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 10/5. 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 12/127:45 am -
Nonstop2h 00m
Sun 12/1311:40 am -
Nonstop2h 10m
Deal found 10/5![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/305:59 pm -
1 stop4h 03m
Tue 4/66:00 am -
1 stop3h 45m
Deal found 10/5![Delta logo]()
$309
This American Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:37 pm -
1 stop5h 22m
Sun 11/226:35 pm -
1 stop6h 29m
Deal found 10/2![American Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/258:39 am -
2 stops45h 42m
Fri 10/306:27 pm -
1 stop17h 12m
Deal found 9/30![Multiple Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/237:35 am -
Nonstop1h 50m
Fri 1/17:30 am -
Nonstop2h 20m
Deal found 10/1![Southwest logo]()
$275
This United Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:03 am -
Nonstop2h 14m
Wed 11/41:16 pm -
Nonstop2h 34m
Deal found 10/2![United Airlines logo]()
$300
This Southwest deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:50 pm -
1 stop4h 40m
Fri 12/41:25 pm -
Nonstop2h 15m
Deal found 10/1![Southwest logo]()
$276
This Delta deal was found by Cheapflights users on 10/5. 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 10/297:00 am -
1 stop3h 47m
Sun 11/16:10 am -
1 stop5h 20m
Deal found 10/5![Delta logo]()
$331
This United Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:07 am -
Nonstop2h 12m
Wed 10/286:46 pm -
Nonstop2h 36m
Deal found 10/2![United Airlines logo]()
$311
This American Airlines deal was found by Cheapflights users on 10/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:00 am -
2 stops8h 58m
Sun 11/226:35 pm -
1 stop6h 32m
Deal found 10/3![American Airlines logo]()
$344
This Southwest deal was found by Cheapflights users on 10/3. 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.
Mon 11/23:50 pm -
Nonstop1h 55m
Wed 11/41:25 pm -
Nonstop2h 15m
Deal found 10/3![Southwest logo]()
$300
This Delta deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/115:00 pm -
1 stop6h 51m
Mon 3/225:30 am -
1 stop5h 56m
Deal found 10/2![Delta logo]()
$339
This American Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:00 am -
2 stops8h 37m
Wed 10/283:51 pm -
2 stops9h 08m
Deal found 9/30![American Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 10/3. 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.
Tue 11/178:10 am -
Nonstop1h 55m
Tue 11/245:25 am -
1 stop7h 50m
Deal found 10/3![Southwest logo]()
$305
This United Airlines deal was found by Cheapflights users on 10/5. 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.
Thu 12/311:00 pm -
1 stop4h 50m
Sun 1/37:37 pm -
1 stop5h 07m
Deal found 10/5![United Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:48 pm -
1 stop4h 24m
Tue 10/273:51 pm -
1 stop5h 34m
Deal found 10/2![American Airlines logo]()
$372
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:25 am -
1 stop6h 52m
Sun 11/156:15 am -
1 stop4h 53m
Deal found 10/1![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:50 am -
Nonstop2h 00m
Sun 10/256:45 am -
Nonstop2h 05m
Deal found 10/2![Southwest logo]()
$311
This American Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:05 pm -
1 stop7h 07m
Wed 10/215:43 am -
1 stop7h 25m
Deal found 10/2![American Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/63:50 pm -
Nonstop1h 55m
Mon 11/91:50 pm -
Nonstop2h 15m
Deal found 10/2![Southwest logo]()
$311
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:24 pm -
Nonstop2h 14m
Thu 11/56:00 am -
1 stop4h 45m
Deal found 10/1![United Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:33 pm -
1 stop11h 59m
Wed 10/217:35 am -
1 stop12h 21m
Deal found 10/2![Multiple Airlines logo]()
$528
This American Airlines deal was found by Cheapflights users on 10/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/711:41 am -
1 stop5h 51m
Sat 1/93:52 pm -
1 stop5h 44m
Deal found 10/5![American Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 10/4. 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.
Mon 10/266:55 pm -
Nonstop2h 00m
Tue 10/275:30 pm -
Nonstop2h 05m
Deal found 10/4![Southwest logo]()
$311
This United Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/189:20 pm -
Nonstop2h 14m
Sun 12/276:24 am -
Nonstop2h 36m
Deal found 10/2![United Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/125:00 pm -
1 stop6h 51m
Wed 3/175:30 am -
1 stop5h 56m
Deal found 10/2![Delta logo]()
$485
This American Airlines deal was found by Cheapflights users on 10/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:50 pm -
1 stop4h 29m
Wed 11/117:26 am -
1 stop5h 13m
Deal found 10/3![American Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2411:31 am -
Nonstop2h 08m
Sun 12/276:24 am -
Nonstop2h 36m
Deal found 10/2![United Airlines logo]()
$363
This Southwest deal was found by Cheapflights users on 10/4. 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 10/292:45 pm -
2 stops8h 10m
Mon 11/25:00 am -
1 stop8h 00m
Deal found 10/4![Southwest logo]()
$336
Last-minute flights from Illinois to PhiladelphiaDiscover last-minute flight deals from Illinois to Philadelphia. Data last updated October 5, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Philadelphia. Data last updated October 5, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:41 pm -
Nonstop2h 23m
Sat 10/249:09 pm -
Nonstop2h 30m
Deal found 10/1![Frontier logo]()
$176
This Frontier deal was found by Cheapflights users on 10/4. 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.
Fri 10/234:41 pm -
Nonstop2h 23m
Thu 10/299:09 pm -
Nonstop2h 34m
Deal found 10/4![Frontier logo]()
$172
This Cheapflightsfares deal was found by Cheapflights users on 10/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:41 pm -
Nonstop2h 23m
Sat 10/249:09 pm -
Nonstop2h 30m
Deal found 10/4![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:21 am -
1 stop10h 54m
Mon 10/265:22 pm -
1 stop7h 21m
Deal found 9/30![Frontier logo]()
$183
This Cheapflightsfares deal was found by Cheapflights users on 10/5. 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.
Sat 10/317:15 am -
1 stop10h 04m
Sun 11/19:09 pm -
Nonstop2h 34m
Deal found 10/5![Frontier logo]()
$177
This ezTravel 易遊網 deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ezTravel 易遊網 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:50 pm -
1 stop10h 31m
Mon 11/99:09 pm -
Nonstop2h 34m
Deal found 10/2![Frontier logo]()
$182
This Super.com deal was found by Cheapflights users on 10/5. 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.
Fri 11/64:42 pm -
Nonstop2h 22m
Sun 11/89:09 pm -
Nonstop2h 34m
Deal found 10/5![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:42 pm -
Nonstop2h 22m
Sat 11/75:45 pm -
1 stop6h 46m
Deal found 9/30![Frontier logo]()
$181
This Frontier deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:42 pm -
Nonstop2h 22m
Fri 11/206:31 pm -
Nonstop2h 44m
Deal found 10/2![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:35 pm -
1 stop10h 36m
Thu 12/36:45 pm -
Nonstop2h 44m
Deal found 10/2![Frontier logo]()
$174
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/194:42 pm -
Nonstop2h 16m
Sun 11/227:06 am -
1 stop18h 36m
Deal found 9/30![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/194:42 pm -
Nonstop2h 22m
Wed 12/26:40 pm -
1 stop13h 35m
Deal found 10/2![Frontier logo]()
$173
One-way flights from Illinois to PhiladelphiaSearch for one-way flight options from Illinois to Philadelphia. Find affordable one-way fares based on user searches. Data last updated October 5, 2026.
Search for one-way flight options from Illinois to Philadelphia. Find affordable one-way fares based on user searches. Data last updated October 5, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:16 am -
1 stop11h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:41 pm -
Nonstop2h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Frontier logo]()
$99
This CheapOair deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:00 am -
1 stop11h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:08 am -
1 stop11h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Frontier logo]()
$101
This Super.com deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:50 pm -
1 stop10h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 10/4. 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 12/168:15 am -
1 stop13h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Frontier logo]()
$102
This Delta deal was found by Cheapflights users on 10/5. 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.
Wed 11/119:30 am -
1 stop6h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Delta logo]()
$103
This CheapOair deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/261:16 pm -
1 stop6h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:42 pm -
1 stop11h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 10/4. 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.
Tue 12/17:32 pm -
1 stop26h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 11/36:16 am -
1 stop16h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Frontier logo]()
$107
This Cheapflightsfares deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:20 am -
1 stop7h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$107
Find flight deals from Illinois to Philadelphia
Keep the following information in mind while searching for Illinois to Philadelphia flight deals. Data was last updated October 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $171 (Cheapflightsfares) |
One-way from | $99 (Cheapflightsfares) |
Popular in | June |
Cheapest in | January |
Average price | $265 |
Good round-trip deal | $282 or less |
Good one-way deal | $161 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Philadelphia 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 October 5, 2026.
Use the filters below to find and compare flights from Illinois to Philadelphia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoPhiladelphia
MDW Chicago Midway - PHL Philadelphia
MDWPHL
Chicago Midway
Wed 11/18
8:10 am-11:05 am
Nonstop1h 55m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$129
ChicagoPhiladelphia
ORD Chicago O'Hare Intl - PHL Philadelphia
ORDPHL
Chicago O'Hare Intl
Wed 11/11
7:59 pm-11:11 pm
Nonstop2h 12m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$129
ChicagoPhiladelphia
MDW Chicago Midway - PHL Philadelphia
MDWPHL
Chicago Midway
Mon 12/21
7:05 pm-10:05 pm
Nonstop2h 00m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$129
Quickest round-trip
ChicagoPhiladelphia
MDW Chicago Midway - PHL Philadelphia
MDWPHL
Chicago Midway
Mon 11/16
11:25 am-2:15 pm
Nonstop1h 50m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$129
ChicagoPhiladelphia
MDW Chicago Midway - PHL Philadelphia
MDWPHL
Chicago Midway
Fri 10/30
11:45 am-2:40 pm
Nonstop1h 55m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$138
ChicagoPhiladelphia
ORD Chicago O'Hare Intl - PHL Philadelphia
ORDPHL
Chicago O'Hare Intl
Thu 10/29
1:56 pm-7:18 pm
1 stop4h 22m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
ChicagoPhiladelphia
ORD Chicago O'Hare Intl - PHL Philadelphia
ORDPHL
Chicago O'Hare Intl
Wed 12/2
6:54 am-9:57 am
Nonstop2h 03m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$145
ChicagoPhiladelphia
MDW Chicago Midway - PHL Philadelphia
MDWPHL
Chicago Midway
Wed 11/11
6:25 pm-9:25 pm
Nonstop2h 00m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$145
ChicagoPhiladelphia
MDW Chicago Midway - PHL Philadelphia
MDWPHL
Chicago Midway
Tue 12/1
11:25 am-2:15 pm
Nonstop1h 50m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$145
ChicagoPhiladelphia
ORD Chicago O'Hare Intl - PHL Philadelphia
ORDPHL
Chicago O'Hare Intl
Sat 11/21
5:05 pm-11:15 pm
1 stop5h 10m
Philadelphia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$148
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Philadelphia
Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Illinois with our price prediction graph.
ORD-PHL
MDW-PHL
PIA-PHL
MLI-PHL
BMI-PHL
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 Illinois to Philadelphia
USIL-PHL
ORD-PHL
MDW-PHL
PIA-PHL
MLI-PHL
What is the cheapest month to book a flight from Illinois to Philadelphia?
Currently, January is the cheapest month in which you can book a flight from Illinois to Philadelphia (average of $232). Flying from Illinois to Philadelphia in March is currently the most expensive (average of $380). 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 IL to PHL?
Find hourly flight availability from Illinois to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 5, 2026.
When flying from Illinois to Philadelphia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 30% versus a flight in the afternoon.
Weekly flight availability from Illinois to Philadelphia
Explore weekly flight availability from Illinois to Philadelphia. 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 October 5, 2026.
The most flights from USIL to PHL are scheduled on a Sunday (46 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from Illinois to Philadelphia?
Airfare is below average for this route at the moment.
Illinois to Philadelphia flights typically cost between $178 and $333 in November.The cheapest round-trip price found within the last 5 days was $171 on Frontier (Nov 19-Nov 21).
How far ahead should I book a flight from Illinois to Philadelphia?
Booking 35 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Philadelphia. 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 Illinois to Philadelphia?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Philadelphia. Price data was last updated on September 26, 2026.
Travelers seeking maximum savings on their Illinois to Philadelphia flight should consider departing on Thursday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Philadelphia?
Book flights to Philadelphia if you plan to visit one of these locationsWildwood
Reading
King of Prussia
Camden
Ocean City
Cherry Hill
Wildwood Crest
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Milford
Ephrata
Dover
Elkton
Essington
New Castle
Willow Grove
Vineland
Millville
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to Philadelphia
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Complete your trip
Complete your trip to Philadelphia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Philadelphia by cabin class
Find flights from Illinois to Philadelphia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Philadelphia flights
Browse other Illinois and Philadelphia flight options. Last updated on October 5, 2026.
Other flights to Philadelphia
Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Philadelphia flights
Consider these flights traveling from Illinois to Philadelphia.
Top 5 airlines flying from Illinois to Philadelphia
Discover the top 5 airlines that operate flights from Illinois to Philadelphia. 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 October 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$69 | Average$177 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$168 | Average$406 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$180 | Average$395 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$218 | Average$404 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$248 | Average$393 | FlexibilityNo cancel fee | On-timeN/A |