$89+ Cheap flights from Philadelphia (PHL) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Nov 28 — Dec 51
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Philadelphia to Illinois
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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 October 29, 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 October 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/192:36 pm -
1 stop6h 57m
Fri 11/279:20 pm -
Nonstop2h 10m
Deal found 10/26![Frontier logo]()
$176
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:49 pm -
1 stop9h 51m
Mon 12/78:15 am -
1 stop11h 52m
Deal found 10/28![Frontier logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:34 am -
1 stop9h 33m
Mon 12/76:11 pm -
1 stop13h 49m
Deal found 10/28![Frontier logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/199:09 pm -
Nonstop2h 34m
Mon 11/239:20 pm -
Nonstop2h 10m
Deal found 10/27![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/175:14 pm -
1 stop26h 16m
Wed 11/259:20 pm -
Nonstop2h 10m
Deal found 10/26![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/138:40 am -
1 stop14h 02m
Thu 1/710:48 am -
Nonstop2h 09m
Deal found 10/27![Frontier logo]()
$180
This Cheapflightsfares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/206:31 pm -
Nonstop2h 44m
Mon 11/235:40 am -
1 stop18h 13m
Deal found 10/27![Frontier logo]()
$181
This Booking.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1910:20 pm -
1 stop27h 36m
Mon 12/213:17 pm -
Nonstop2h 15m
Deal found 10/25![Frontier logo]()
$182
This Cheapflightsfares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/47:34 am -
1 stop9h 33m
Mon 12/76:11 pm -
1 stop27h 38m
Deal found 10/27![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/1812:36 pm -
1 stop6h 54m
Wed 11/259:20 pm -
Nonstop2h 10m
Deal found 10/26![Frontier logo]()
$183
This FlightHub deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:36 pm -
1 stop6h 11m
Wed 11/258:42 pm -
1 stop27h 11m
Deal found 10/24![Frontier logo]()
$183
This Cheapflightsfares deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/129:09 pm -
Nonstop2h 34m
Sun 11/154:42 pm -
Nonstop2h 22m
Deal found 10/25![Frontier logo]()
$184
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 October 29, 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 October 29, 2026.
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:30 am -
Nonstop2h 20m
Sun 12/66:30 am -
1 stop6h 20m
Deal found 10/23![Southwest logo]()
$182
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1712:09 pm -
1 stop5h 57m
Mon 1/115:55 pm -
1 stop5h 56m
Deal found 10/23![Delta logo]()
$185
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/156:15 am -
1 stop6h 17m
Mon 1/186:25 pm -
Nonstop2h 15m
Deal found 10/23![United Airlines logo]()
$195
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 1/156:00 am -
1 stop3h 58m
Mon 1/185:55 pm -
1 stop5h 56m
Deal found 10/23![Delta logo]()
$185
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 1/141:15 pm -
2 stops9h 35m
Sun 1/171:35 pm -
Nonstop1h 50m
Deal found 10/23![Southwest logo]()
$187
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 3/310:41 am -
1 stop4h 22m
Sat 3/62:33 pm -
1 stop4h 55m
Deal found 10/26![American Airlines logo]()
$381
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1510:53 am -
Nonstop2h 36m
Wed 12/168:52 am -
1 stop4h 20m
Deal found 10/24![United Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/91:25 pm -
Nonstop2h 15m
Wed 12/1611:25 am -
Nonstop1h 50m
Deal found 10/25![Southwest logo]()
$199
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1011:45 am -
Nonstop2h 15m
Mon 12/143:50 pm -
1 stop4h 40m
Deal found 10/28![Southwest logo]()
$241
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/244:58 pm -
Nonstop2h 36m
Sat 12/269:20 pm -
Nonstop2h 14m
Deal found 10/28![United Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/16:00 am -
1 stop7h 05m
Tue 12/811:25 am -
Nonstop1h 50m
Deal found 10/25![Southwest logo]()
$249
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:04 pm -
1 stop5h 32m
Sat 12/511:08 am -
1 stop6h 50m
Deal found 10/25![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:45 pm -
2 stops9h 25m
Mon 12/79:40 am -
2 stops11h 30m
Deal found 10/23![Southwest logo]()
$258
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:00 pm -
Nonstop2h 35m
Tue 12/86:54 am -
Nonstop2h 03m
Deal found 10/25![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/25:05 pm -
1 stop6h 35m
Fri 12/411:30 am -
2 stops9h 40m
Deal found 10/26![Southwest logo]()
$260
This KAYAK deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:22 pm -
1 stop7h 04m
Fri 12/46:49 am -
1 stop6h 44m
Deal found 10/26![Delta logo]()
$353
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/1910:54 am -
Nonstop2h 35m
Sun 11/226:35 am -
Nonstop2h 10m
Deal found 10/24![United Airlines logo]()
$341
This Southwest deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/238:15 pm -
1 stop4h 55m
Fri 11/273:50 pm -
Nonstop1h 55m
Deal found 10/28![Southwest logo]()
$261
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/115:15 am -
1 stop6h 04m
Sun 11/156:00 am -
1 stop6h 07m
Deal found 10/27![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 2/46:15 am -
1 stop4h 25m
Sun 2/72:35 pm -
Nonstop2h 09m
Deal found 10/26![United Airlines logo]()
$341
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/156:20 pm -
Nonstop2h 15m
Mon 1/182:50 pm -
Nonstop1h 50m
Deal found 10/23![Southwest logo]()
$273
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/206:35 pm -
1 stop6h 29m
Sun 11/226:00 am -
2 stops7h 58m
Deal found 10/24![American Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/286:15 am -
Nonstop2h 36m
Thu 12/310:40 am -
Nonstop2h 15m
Deal found 10/28![United Airlines logo]()
$369
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/312:35 pm -
1 stop6h 55m
Tue 12/87:00 pm -
1 stop4h 24m
Deal found 10/26![American Airlines logo]()
$542
This Southwest deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:45 am -
Nonstop2h 15m
Mon 12/78:10 am -
Nonstop1h 55m
Deal found 10/24![Southwest logo]()
$279
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/266:00 am -
1 stop4h 49m
Sat 1/27:00 am -
1 stop4h 07m
Deal found 10/27![Delta logo]()
$426
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 1/96:17 am -
1 stop4h 46m
Tue 1/1210:38 am -
1 stop6h 06m
Deal found 10/24![United Airlines logo]()
$391
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/119:22 am -
1 stop6h 15m
Sun 11/153:11 pm -
1 stop6h 33m
Deal found 10/27![American Airlines logo]()
$592
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Sun 12/209:16 am -
1 stop6h 16m
Sun 12/273:02 pm -
1 stop4h 41m
Deal found 10/25![American Airlines logo]()
$593
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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.
Sun 12/206:24 am -
1 stop4h 36m
Sat 12/267:18 pm -
1 stop4h 16m
Deal found 10/26![United Airlines logo]()
$415
Last-minute flights from Philadelphia to IllinoisDiscover last-minute flight deals from Philadelphia to Illinois. Data last updated October 29, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Illinois. Data last updated October 29, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/78:36 am -
1 stop10h 54m
Mon 11/94:42 pm -
Nonstop2h 22m
Deal found 10/24![Frontier logo]()
$186
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/1210:30 am -
1 stop5h 08m
Sun 11/157:57 pm -
Nonstop2h 12m
Deal found 10/23![United Airlines logo]()
$182
This Cheapflightsfares deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/129:09 pm -
Nonstop2h 34m
Sun 11/154:42 pm -
Nonstop2h 22m
Deal found 10/25![Frontier logo]()
$184
This Cheapflightsfares deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/129:09 pm -
Nonstop2h 34m
Sat 11/147:05 am -
1 stop10h 14m
Deal found 10/24![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/175:14 pm -
1 stop26h 16m
Wed 11/259:20 pm -
Nonstop2h 10m
Deal found 10/26![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/1812:36 pm -
1 stop6h 54m
Wed 11/259:20 pm -
Nonstop2h 10m
Deal found 10/26![Frontier logo]()
$183
This FlightHub deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:36 pm -
1 stop6h 11m
Wed 11/258:42 pm -
1 stop27h 11m
Deal found 10/24![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/192:36 pm -
1 stop6h 57m
Fri 11/279:20 pm -
Nonstop2h 10m
Deal found 10/26![Frontier logo]()
$176
This Frontier deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/199:09 pm -
Nonstop2h 34m
Thu 11/265:12 pm -
1 stop6h 41m
Deal found 10/27![Frontier logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/199:09 pm -
Nonstop2h 34m
Mon 11/239:20 pm -
Nonstop2h 10m
Deal found 10/27![Frontier logo]()
$178
This Trip.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/196:00 pm -
1 stop6h 47m
Wed 11/258:42 pm -
1 stop10h 20m
Deal found 10/24![Frontier logo]()
$184
This Cheapflightsfares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/206:31 pm -
Nonstop2h 44m
Mon 11/235:40 am -
1 stop18h 13m
Deal found 10/27![Frontier logo]()
$181
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 October 29, 2026.
Search for one-way flight options from Philadelphia to Illinois. Find affordable one-way fares based on user searches. Data last updated October 29, 2026.
This Super.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 1/25:30 pm -
Nonstop2h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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.
Sun 11/159:09 pm -
Nonstop2h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:01 am -
1 stop7h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$90
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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.
Sun 11/229:16 am -
Nonstop2h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$91
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1712:04 pm -
1 stop6h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/47:34 am -
1 stop9h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$92
This Trip.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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.
Mon 1/186:15 am -
1 stop18h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/197:50 am -
1 stop8h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$94
This Super.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/196:00 pm -
1 stop6h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$94
This Super.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/234:39 pm -
1 stop9h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/178:30 am -
2 stops27h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 12/166:31 pm -
2 stops23h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$96
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 October 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $176 (Kiwi.com) |
One-way from | $89 (Super.com) |
Popular in | June |
Cheapest in | January |
Average price | $320 |
Good round-trip deal | $314 or less |
Good one-way deal | $197 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 7,457,451 searches. Data last updated October 29, 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 Philadelphia - ORD Chicago O'Hare Intl
PHLORD
Philadelphia
Tue 2/23
5:30 am-10:07 am
1 stop5h 37m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$110
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Sat 2/27
5:30 am-9:52 am
1 stop5h 22m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$110
Quickest round-trip
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Thu 11/26
1:25 pm-2:35 pm
Nonstop2h 10m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$116
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Thu 11/26
6:00 am-11:25 am
1 stop6h 25m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$126
PhiladelphiaPeoria
PHL Philadelphia - PIA Greater Peoria
PHLPIA
Philadelphia
Wed 12/9
8:40 am-8:03 am
2 stops24h 23m
Greater Peoria
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$132
PhiladelphiaSpringfield
PHL Philadelphia - SPI Springfield Capital
PHLSPI
Philadelphia
Tue 12/15
6:31 pm-6:56 pm
2 stops25h 25m
Springfield Capital
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$138
PhiladelphiaChicago
PHL Philadelphia - ORD Chicago O'Hare Intl
PHLORD
Philadelphia
Thu 1/28
9:55 am-11:31 am
Nonstop2h 36m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$140
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Thu 11/19
1:25 pm-2:40 pm
Nonstop2h 15m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$141
PhiladelphiaChicago
PHL Philadelphia - MDW Chicago Midway
PHLMDW
Philadelphia
Wed 11/25
7:40 am-9:05 am
Nonstop2h 25m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$141
PhiladelphiaChicago
PHL Philadelphia - ORD Chicago O'Hare Intl
PHLORD
Philadelphia
Fri 11/27
10:30 am-5:00 pm
1 stop7h 30m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$146
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-PIA
PHL-SPI
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-ORD
PHL-MDW
PHL-PIA
PHL-SPI
What is the cheapest month to book a flight from Philadelphia to Illinois?
Currently, January is the cheapest month in which you can book a flight from Philadelphia to Illinois (average of $248). Flying from Philadelphia to Illinois in June is currently the most expensive (average of $365). 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 October 29, 2026.
It’s optimal to fly from Philadelphia to Illinois in the afternoon. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the morning.
How much does it cost to fly round-trip from Philadelphia to Illinois?
Airfare is below average for this route at the moment.
Philadelphia to Illinois flights typically cost between $221 and $414 in November.The cheapest round-trip price found within the last 5 days was $176 on Frontier (Nov 19-Nov 27).
How far ahead should I book a flight from Philadelphia to Illinois?
Booking 77 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 October 24, 2026.
Travelers seeking maximum savings on their Philadelphia to Illinois flight should consider departing on Saturday 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 October 29, 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
Boarding
8.1
Entertainment
7.4
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from 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 October 29, 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 7,457,451 searches. Data last updated October 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$199 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$281 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$191 | Average$380 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$197 | Average$400 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$215 | Average$377 | FlexibilityNo cancel fee | On-time63% |