$88+ Cheap flights from Illinois to Delaware
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ILG
Jun 8 — Jun 151
Round-trip
1 adult, Economy
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Cheapest flights from Illinois to DelawareExplore the most affordable flight options available from Illinois to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 9, 2026.
Explore the most affordable flight options available from Illinois to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 9, 2026.
This Expedia deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:33 pm
STL
- PHL
1 stop11h 39m
Frontier
Mon 6/15:21 am
PHL
- STL
1 stop19h 36m
Frontier
Deal found 5/4![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 5/5. 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 8/18:05 pm
ORD
- PHL
Nonstop2h 26m
Frontier
Wed 8/58:30 am
PHL
- ORD
1 stop12h 23m
Frontier
Deal found 5/5![Frontier logo]()
$184
This Frontier deal was found by Cheapflights users on 5/6. 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 6/36:00 am
MDW
- PHL
1 stop5h 25m
Frontier
Wed 6/34:25 pm
PHL
- MDW
1 stop6h 37m
Frontier
Deal found 5/6![Frontier logo]()
$185
This Priceline deal was found by Cheapflights users on 5/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:19 pm
STL
- PHL
1 stop6h 10m
Frontier
Wed 6/105:10 pm
PHL
- STL
1 stop7h 39m
Frontier
Deal found 5/4![Frontier logo]()
$185
This Trip.com deal was found by Cheapflights users on 5/6. 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.
Sat 6/278:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Mon 6/297:00 am
PHL
- ORD
1 stop18h 48m
Frontier
Deal found 5/6![Frontier logo]()
$185
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:27 pm
MDW
- PHL
1 stop5h 43m
Frontier
Tue 6/94:35 pm
PHL
- MDW
1 stop6h 36m
Frontier
Deal found 5/5![Frontier logo]()
$186
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/138:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Mon 6/1511:00 am
PHL
- ORD
1 stop19h 07m
Frontier
Deal found 5/5![Frontier logo]()
$186
This Super.com deal was found by Cheapflights users on 5/5. 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.
Sat 8/18:05 pm
ORD
- PHL
Nonstop2h 26m
Frontier
Mon 8/35:18 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Deal found 5/5![Frontier logo]()
$187
This Trip.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:00 am
MDW
- PHL
1 stop5h 25m
Frontier
Sun 5/311:32 pm
PHL
- MDW
1 stop9h 30m
Frontier
Deal found 5/3![Frontier logo]()
$188
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:29 pm
ORD
- PHL
1 stop8h 00m
Frontier
Wed 6/246:00 am
PHL
- ORD
1 stop7h 24m
Frontier
Deal found 5/5![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 5/6. 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 6/312:04 pm
MDW
- PHL
1 stop6h 06m
Frontier
Tue 6/94:35 pm
PHL
- MDW
1 stop6h 36m
Frontier
Deal found 5/6![Frontier logo]()
$190
This Frontier deal was found by Cheapflights users on 5/5. 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.
Tue 8/46:33 pm
STL
- PHL
1 stop11h 42m
Frontier
Tue 8/258:30 am
PHL
- STL
1 stop10h 00m
Frontier
Deal found 5/5![Frontier logo]()
$190
Best flights from Illinois to DelawareDiscover carefully curated flight deals from Illinois to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 9, 2026.
Discover carefully curated flight deals from Illinois to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 9, 2026.
This Southwest deal was found by Cheapflights users on 5/8. 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.
Sat 6/2011:15 am
MDW
- PHL
Nonstop1h 55m
Southwest
Tue 6/237:20 pm
PHL
- MDW
1 stop4h 50m
Southwest
Deal found 5/8![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 5/5. 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.
Fri 7/35:17 pm
MLI
- PHL
1 stop6h 42m
Delta
Wed 7/84:08 pm
PHL
- MLI
1 stop7h 23m
Delta
Deal found 5/5![Delta logo]()
$261
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Wed 7/156:30 pm
MLI
- PHL
1 stop5h 27m
United Airlines
Fri 7/245:00 pm
PHL
- MLI
1 stop7h 14m
United Airlines
Deal found 5/6![United Airlines logo]()
$285
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Thu 7/26:50 pm
MLI
- PHL
1 stop5h 09m
American Airlines
Tue 7/75:07 am
PHL
- MLI
1 stop7h 16m
American Airlines
Deal found 5/8![American Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Fri 7/31:29 pm
ORD
- SBY
2 stops28h 57m
Multiple Airlines
Wed 7/88:06 pm
SBY
- ORD
1 stop17h 19m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:10 am
MDW
- PHL
Nonstop2h 05m
Southwest
Mon 8/242:05 pm
PHL
- MDW
Nonstop2h 05m
Southwest
Deal found 5/7![Southwest logo]()
$295
This Delta deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:00 pm
MLI
- PHL
1 stop4h 55m
Delta
Wed 7/2910:40 am
PHL
- MLI
1 stop6h 42m
Delta
Deal found 5/7![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 5/8. 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.
Sun 5/249:48 pm
ORD
- PHL
Nonstop2h 11m
United Airlines
Sat 5/3012:46 pm
PHL
- ORD
Nonstop2h 24m
United Airlines
Deal found 5/8![United Airlines logo]()
$300
This Southwest deal was found by Cheapflights users on 5/4. 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.
Sat 7/115:55 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Sun 7/127:10 pm
PHL
- MDW
Nonstop2h 25m
Southwest
Deal found 5/4![Southwest logo]()
$301
This Delta deal was found by Cheapflights users on 5/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1712:09 pm
BMI
- PHL
1 stop5h 28m
Delta
Mon 6/226:25 am
PHL
- BMI
1 stop6h 01m
Delta
Deal found 5/4![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 5/4. 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.
Wed 9/231:00 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Sun 9/277:20 am
PHL
- MDW
Nonstop2h 00m
Southwest
Deal found 5/4![Southwest logo]()
$301
This United Airlines deal was found by Cheapflights users on 5/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/239:48 pm
ORD
- PHL
Nonstop2h 11m
United Airlines
Mon 5/256:00 am
PHL
- ORD
Nonstop2h 29m
United Airlines
Deal found 5/4![United Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 5/5. 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 6/311:00 am
MLI
- PHL
1 stop5h 19m
Delta
Sun 6/75:15 am
PHL
- MLI
1 stop6h 01m
Delta
Deal found 5/5![Delta logo]()
$309
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/64:34 pm
EVV
- PHL
1 stop6h 35m
American Airlines
Fri 6/124:56 pm
PHL
- EVV
1 stop5h 34m
American Airlines
Deal found 5/7![American Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 5/7. 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.
Tue 6/1610:15 am
STL
- PHL
2 stops10h 05m
Southwest
Tue 6/304:35 pm
PHL
- STL
1 stop6h 50m
Southwest
Deal found 5/7![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 5/8. 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 5/231:21 pm
PIA
- PHL
1 stop7h 07m
United Airlines
Wed 5/279:21 am
PHL
- PIA
1 stop5h 36m
United Airlines
Deal found 5/8![United Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 5/3. 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 5/296:02 pm
BMI
- PHL
1 stop5h 29m
American Airlines
Mon 6/17:41 pm
PHL
- BMI
1 stop5h 18m
American Airlines
Deal found 5/3![American Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1611:08 am
MLI
- PHL
1 stop6h 04m
Delta
Wed 7/2910:40 am
PHL
- MLI
1 stop6h 42m
Delta
Deal found 5/7![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 5/4. 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 7/301:40 pm
MDW
- PHL
Nonstop2h 05m
Southwest
Sat 8/14:30 pm
PHL
- MDW
1 stop8h 10m
Southwest
Deal found 5/4![Southwest logo]()
$305
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Wed 8/261:33 pm
MLI
- PHL
1 stop4h 46m
United Airlines
Sat 8/296:00 am
PHL
- MLI
1 stop4h 54m
United Airlines
Deal found 5/5![United Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Sat 6/64:29 pm
EVV
- PHL
1 stop6h 35m
Multiple Airlines
Fri 6/123:49 pm
PHL
- EVV
2 stops25h 00m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 5/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/275:47 pm
MDW
- PHL
1 stop4h 30m
Delta
Sun 7/58:05 am
PHL
- MDW
1 stop5h 00m
Delta
Deal found 5/4![Delta logo]()
$321
This American Airlines deal was found by Cheapflights users on 5/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/304:27 pm
PIA
- PHL
1 stop6h 42m
American Airlines
Mon 6/112:07 pm
PHL
- PIA
1 stop5h 09m
American Airlines
Deal found 5/4![American Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 5/4. 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.
Wed 9/163:00 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Sun 9/206:45 am
PHL
- MDW
2 stops8h 05m
Southwest
Deal found 5/4![Southwest logo]()
$316
This United Airlines deal was found by Cheapflights users on 5/8. 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.
Thu 7/29:45 pm
ORD
- PHL
Nonstop2h 12m
United Airlines
Sun 7/1211:38 am
PHL
- ORD
Nonstop2h 29m
United Airlines
Deal found 5/8![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 5/5. 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 6/34:14 pm
BMI
- PHL
1 stop4h 58m
Delta
Sun 6/75:15 am
PHL
- BMI
1 stop7h 11m
Delta
Deal found 5/5![Delta logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Fri 8/78:46 am
EVV
- PHL
2 stops25h 17m
Multiple Airlines
Sun 8/98:35 am
PHL
- EVV
1 stop10h 14m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$493
This Southwest deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:40 am
MDW
- PHL
Nonstop1h 55m
Southwest
Sun 5/248:55 am
PHL
- MDW
Nonstop2h 20m
Southwest
Deal found 5/6![Southwest logo]()
$318
This United Airlines deal was found by Cheapflights users on 5/8. 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.
Wed 7/2911:33 am
ORD
- PHL
Nonstop2h 14m
United Airlines
Fri 7/317:00 pm
PHL
- ORD
Nonstop2h 33m
United Airlines
Deal found 5/8![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 5/5. 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 5/204:14 pm
BMI
- PHL
1 stop7h 47m
Delta
Sun 5/245:17 am
PHL
- BMI
1 stop7h 06m
Delta
Deal found 5/5![Delta logo]()
$339
Last-minute flights from Illinois to DelawareDiscover last-minute flight deals from Illinois to Delaware. Data last updated May 9, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Delaware. Data last updated May 9, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:52 pm
ORD
- PHL
Nonstop2h 26m
Frontier
Sun 5/245:06 pm
PHL
- ORD
Nonstop2h 38m
Frontier
Deal found 5/7![Frontier logo]()
$191
This Expedia deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:33 pm
STL
- PHL
1 stop11h 39m
Frontier
Mon 6/15:21 am
PHL
- STL
1 stop19h 36m
Frontier
Deal found 5/4![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 5/5. 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.
Thu 5/287:52 pm
ORD
- PHL
Nonstop2h 26m
Frontier
Tue 6/28:30 am
PHL
- ORD
1 stop11h 59m
Frontier
Deal found 5/5![Frontier logo]()
$184
This Trip.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:00 am
MDW
- PHL
1 stop5h 25m
Frontier
Sun 5/311:32 pm
PHL
- MDW
1 stop9h 30m
Frontier
Deal found 5/3![Frontier logo]()
$188
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:27 pm
MDW
- PHL
1 stop5h 43m
Frontier
Tue 6/94:35 pm
PHL
- MDW
1 stop6h 36m
Frontier
Deal found 5/5![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 5/6. 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 6/36:00 am
MDW
- PHL
1 stop5h 25m
Frontier
Wed 6/34:25 pm
PHL
- MDW
1 stop6h 37m
Frontier
Deal found 5/6![Frontier logo]()
$185
This Priceline deal was found by Cheapflights users on 5/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:19 pm
STL
- PHL
1 stop6h 10m
Frontier
Wed 6/105:10 pm
PHL
- STL
1 stop7h 39m
Frontier
Deal found 5/4![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 5/6. 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 6/312:04 pm
MDW
- PHL
1 stop6h 06m
Frontier
Tue 6/94:35 pm
PHL
- MDW
1 stop6h 36m
Frontier
Deal found 5/6![Frontier logo]()
$190
This Frontier deal was found by Cheapflights users on 5/6. 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 6/36:55 am
ORD
- PHL
1 stop11h 15m
Frontier
Tue 6/98:30 am
PHL
- ORD
1 stop12h 23m
Frontier
Deal found 5/6![Frontier logo]()
$190
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:29 pm
ORD
- PHL
1 stop8h 00m
Frontier
Wed 6/246:00 am
PHL
- ORD
1 stop7h 24m
Frontier
Deal found 5/5![Frontier logo]()
$188
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/138:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Mon 6/1511:00 am
PHL
- ORD
1 stop19h 07m
Frontier
Deal found 5/5![Frontier logo]()
$186
This Trip.com deal was found by Cheapflights users on 5/6. 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.
Sat 6/278:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Mon 6/297:00 am
PHL
- ORD
1 stop18h 48m
Frontier
Deal found 5/6![Frontier logo]()
$185
One-way flights from Illinois to DelawareSearch for one-way flight options from Illinois to Delaware. Find affordable one-way fares based on user searches. Data last updated May 9, 2026.
Search for one-way flight options from Illinois to Delaware. Find affordable one-way fares based on user searches. Data last updated May 9, 2026.
This Super.com deal was found by Cheapflights users on 5/5. 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.
Thu 6/118:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Deal found 5/5![Frontier logo]()
$88
This Frontier deal was found by Cheapflights users on 5/6. 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.
Thu 6/48:00 pm
ORD
- PHL
Nonstop2h 27m
Frontier
Deal found 5/6![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:00 am
MDW
- PHL
1 stop5h 25m
Frontier
Deal found 5/4![Frontier logo]()
$90
This Mytrip deal was found by Cheapflights users on 5/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:08 pm
STL
- PHL
1 stop8h 29m
Frontier
Deal found 5/4![Frontier logo]()
$90
This Booking.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/188:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Deal found 5/4![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 5/8. 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.
Wed 6/171:29 pm
ORD
- PHL
1 stop8h 00m
Frontier
Deal found 5/8![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 5/5. 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 6/26:00 am
MDW
- PHL
1 stop5h 25m
Frontier
Deal found 5/5![Frontier logo]()
$94
This Super.com deal was found by Cheapflights users on 5/8. 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.
Tue 6/164:17 pm
STL
- PHL
1 stop7h 27m
Frontier
Deal found 5/8![Frontier logo]()
$94
This Super.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/161:29 pm
ORD
- PHL
1 stop8h 00m
Frontier
Deal found 5/6![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 5/6. 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 7/86:00 am
MDW
- PHL
1 stop5h 22m
Frontier
Deal found 5/6![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 5/5. 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 6/107:03 pm
STL
- PHL
1 stop10h 24m
Frontier
Deal found 5/5![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 5/6. 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.
Tue 8/41:50 pm
ORD
- PHL
1 stop7h 38m
Frontier
Deal found 5/6![Frontier logo]()
$95
Find flight deals from Illinois to Delaware
Keep the following information in mind while searching for Illinois to Delaware flight deals. Data was last updated May 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $180 (Expedia) |
One-way from | $88 (Super.com) |
Popular in | March |
Cheapest in | October |
Average price | $284 |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Delaware 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 May 9, 2026.
Use the filters below to find and compare flights from Illinois to Delaware that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoPhiladelphia
MDW - PHL
MDWPHL
Chicago Midway
Sat 6/20
11:15 am-2:10 pm
Nonstop1h 55m
Philadelphia
Tue 6/23
7:20 pm-11:10 pm
1 stop4h 50m
$257
MolinePhiladelphia
MLI - PHL
MLIPHL
Moline Quad-City
Fri 7/3
5:17 pm-12:59 am
1 stop6h 42m
Philadelphia
Wed 7/8
4:08 pm-10:31 pm
1 stop7h 23m
$261
MolinePhiladelphia
MLI - PHL
MLIPHL
Moline Quad-City
Wed 7/15
6:30 pm-12:57 am
1 stop5h 27m
Philadelphia
Fri 7/24
5:00 pm-11:14 pm
1 stop7h 14m
$285
MolinePhiladelphia
MLI - PHL
MLIPHL
Moline Quad-City
Thu 7/2
6:50 pm-12:59 am
1 stop5h 09m
Philadelphia
Tue 7/7
5:07 am-11:23 am
1 stop7h 16m
$295
ChicagoPhiladelphia
MDW - PHL
MDWPHL
Chicago Midway
Sat 8/22
8:10 am-11:15 am
Nonstop2h 05m
Philadelphia
Mon 8/24
2:05 pm-3:10 pm
Nonstop2h 05m
$295
MolinePhiladelphia
MLI - PHL
MLIPHL
Moline Quad-City
Tue 7/14
5:00 pm-10:55 pm
1 stop4h 55m
Philadelphia
Wed 7/29
10:40 am-4:22 pm
1 stop6h 42m
$295
ChicagoPhiladelphia
ORD - PHL
ORDPHL
Chicago O'Hare Intl
Sun 5/24
9:48 pm-12:59 am
Nonstop2h 11m
Philadelphia
Sat 5/30
12:46 pm-2:10 pm
Nonstop2h 24m
$300
ChicagoPhiladelphia
MDW - PHL
MDWPHL
Chicago Midway
Sat 7/11
5:55 pm-8:55 pm
Nonstop2h 00m
Philadelphia
Sun 7/12
7:10 pm-8:35 pm
Nonstop2h 25m
$301
Quickest round-trip
ChicagoPhiladelphia
MDW - PHL
MDWPHL
Chicago Midway
Wed 9/23
1:00 pm-4:00 pm
Nonstop2h 00m
Philadelphia
Sun 9/27
7:20 am-8:20 am
Nonstop2h 00m
$301
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 6/16
10:15 am-9:20 pm
2 stops10h 05m
Philadelphia
Tue 6/30
4:35 pm-10:25 pm
1 stop6h 50m
$302
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Delaware
Have a flexible travel schedule? Discover the best time to fly to Delaware from Illinois with our price prediction graph.
ORD-PHL
MDW-PHL
STL-PHL
MLI-PHL
ORD-SBY
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 Delaware
USIL-USDE
ORD-PHL
MDW-PHL
STL-PHL
MLI-PHL
No data available for this route at this time. Please check back soon.
Related info for your journey
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