$60+ Cheap flights from Raleigh (RDU) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
May 10 — May 171
Round-trip
1 adult, Economy
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Find cheap flights from Raleigh 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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Cheapest flights from Raleigh to IllinoisExplore the most affordable flight options available from Raleigh to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.
Explore the most affordable flight options available from Raleigh to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:00 pm
RDU
- STL
1 stop15h 50m
Frontier
Wed 5/65:27 pm
STL
- RDU
1 stop6h 06m
Frontier
Deal found 4/7![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:00 pm
RDU
- STL
1 stop15h 50m
Frontier
Thu 5/76:55 pm
STL
- RDU
1 stop12h 09m
Frontier
Deal found 4/7![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:57 pm
RDU
- STL
1 stop4h 57m
Frontier
Mon 5/115:27 pm
STL
- RDU
1 stop5h 57m
Frontier
Deal found 4/5![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Wed 4/294:00 pm
RDU
- STL
1 stop19h 26m
Frontier
Sat 5/28:23 pm
STL
- RDU
1 stop11h 00m
Frontier
Deal found 4/7![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:54 pm
RDU
- STL
1 stop5h 39m
Frontier
Thu 6/46:33 pm
STL
- RDU
1 stop4h 51m
Frontier
Deal found 4/8![Frontier logo]()
$139
This Frontier deal was found by Cheapflights users on 4/6. 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 5/712:57 pm
RDU
- STL
1 stop4h 57m
Frontier
Sat 5/95:27 pm
STL
- RDU
1 stop6h 02m
Frontier
Deal found 4/6![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:21 pm
RDU
- STL
1 stop6h 36m
Frontier
Wed 6/35:27 pm
STL
- RDU
1 stop6h 06m
Frontier
Deal found 4/9![Frontier logo]()
$146
This CheapOair deal was found by Cheapflights users on 4/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:51 pm
RDU
- STL
1 stop6h 28m
Frontier
Mon 5/44:59 pm
STL
- RDU
1 stop15h 54m
Frontier
Deal found 4/8![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:52 pm
RDU
- STL
1 stop29h 05m
Frontier
Sat 5/305:27 pm
STL
- RDU
1 stop5h 59m
Frontier
Deal found 4/9![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:00 pm
RDU
- STL
1 stop15h 50m
Frontier
Tue 5/56:41 pm
STL
- RDU
1 stop12h 23m
Frontier
Deal found 4/7![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 4/5. 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.
Mon 5/412:57 pm
RDU
- STL
1 stop11h 22m
Frontier
Thu 5/76:55 pm
STL
- RDU
1 stop4h 29m
Frontier
Deal found 4/5![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/5. 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.
Fri 5/16:10 am
RDU
- ORD
1 stop5h 13m
Multiple Airlines
Sun 5/310:07 pm
ORD
- RDU
2 stops23h 53m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$178
Best flights from Raleigh to IllinoisDiscover carefully curated flight deals from Raleigh to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 10, 2026.
Discover carefully curated flight deals from Raleigh to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1410:17 pm
RDU
- RFD
1 stop11h 56m
Multiple Airlines
Fri 7/177:50 pm
RFD
- RDU
1 stop12h 29m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$212
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:10 am
RDU
- MDW
1 stop6h 25m
Southwest
Sat 5/97:50 am
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 4/6![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:00 am
RDU
- ORD
Nonstop2h 26m
United Airlines
Thu 5/289:10 am
ORD
- RDU
Nonstop2h 23m
United Airlines
Deal found 4/10![United Airlines logo]()
$251
This Delta deal was found by Cheapflights users on 4/5. 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 5/204:15 pm
RDU
- MLI
1 stop7h 06m
Delta
Sun 5/245:56 am
MLI
- RDU
1 stop6h 40m
Delta
Deal found 4/5![Delta logo]()
$286
This American Airlines deal was found by Cheapflights users on 4/7. 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 6/66:29 pm
RDU
- PIA
1 stop6h 29m
American Airlines
Wed 6/105:06 am
PIA
- RDU
1 stop4h 16m
American Airlines
Deal found 4/7![American Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:21 pm
RDU
- RFD
1 stop16h 00m
Multiple Airlines
Sun 5/3111:27 am
RFD
- RDU
2 stops19h 37m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$212
This Southwest deal was found by Cheapflights users on 4/5. 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.
Fri 5/154:50 pm
RDU
- MDW
1 stop8h 05m
Southwest
Tue 5/197:40 am
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 4/5![Southwest logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Sun 6/2810:17 pm
RDU
- EVV
1 stop22h 28m
Multiple Airlines
Thu 7/28:13 am
EVV
- RDU
1 stop12h 38m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$231
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:00 am
RDU
- ORD
Nonstop2h 26m
United Airlines
Mon 5/259:38 pm
ORD
- RDU
Nonstop2h 12m
United Airlines
Deal found 4/9![United Airlines logo]()
$265
This Southwest deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:45 pm
RDU
- MDW
Nonstop2h 00m
Southwest
Wed 5/64:50 pm
MDW
- RDU
1 stop3h 45m
Southwest
Deal found 4/9![Southwest logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 4/5. 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.
Sun 7/1910:36 pm
RDU
- RFD
1 stop10h 13m
Multiple Airlines
Fri 7/247:50 pm
RFD
- RDU
1 stop12h 29m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$245
This United Airlines deal was found by Cheapflights users on 4/5. 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 8/197:45 am
RDU
- ORD
Nonstop2h 22m
United Airlines
Mon 8/2410:48 am
ORD
- RDU
Nonstop2h 16m
United Airlines
Deal found 4/5![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:35 am
RDU
- MDW
2 stops8h 35m
Southwest
Mon 5/1812:00 pm
MDW
- RDU
1 stop6h 40m
Southwest
Deal found 4/10![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:20 am
RDU
- ORD
1 stop7h 19m
Delta
Sun 7/58:03 am
ORD
- RDU
1 stop5h 26m
Delta
Deal found 4/9![Delta logo]()
$318
This American Airlines deal was found by Cheapflights users on 4/5. 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.
Wed 9/211:13 am
RDU
- PIA
2 stops7h 36m
American Airlines
Sat 9/56:30 pm
PIA
- RDU
1 stop4h 29m
American Airlines
Deal found 4/5![American Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/910:17 pm
RDU
- RFD
1 stop21h 43m
Multiple Airlines
Mon 7/137:50 pm
RFD
- RDU
1 stop12h 29m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$246
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:45 pm
RDU
- MDW
1 stop4h 30m
Southwest
Sun 5/103:15 pm
MDW
- RDU
2 stops6h 45m
Southwest
Deal found 4/6![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 4/5. 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 6/46:15 am
RDU
- ORD
Nonstop2h 28m
United Airlines
Sun 6/79:38 pm
ORD
- RDU
Nonstop2h 12m
United Airlines
Deal found 4/5![United Airlines logo]()
$291
This Delta deal was found by Cheapflights users on 4/5. 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 5/55:18 am
RDU
- BMI
1 stop7h 01m
Delta
Tue 5/124:14 pm
BMI
- RDU
1 stop7h 02m
Delta
Deal found 4/5![Delta logo]()
$329
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:54 am
RDU
- EVV
1 stop4h 26m
American Airlines
Sat 7/114:35 pm
EVV
- RDU
1 stop6h 24m
American Airlines
Deal found 4/6![American Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 4/5. 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 7/2110:17 pm
RDU
- RFD
1 stop11h 56m
Multiple Airlines
Mon 7/277:50 pm
RFD
- RDU
1 stop12h 29m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$253
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/174:25 pm
RDU
- MDW
1 stop6h 10m
Southwest
Tue 6/2310:10 am
MDW
- RDU
2 stops6h 20m
Southwest
Deal found 4/7![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 4/5. 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.
Sat 5/235:20 am
RDU
- BMI
1 stop7h 03m
Delta
Sun 5/244:14 pm
BMI
- RDU
1 stop4h 39m
Delta
Deal found 4/5![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:00 am
RDU
- ORD
1 stop4h 36m
United Airlines
Mon 5/259:38 pm
ORD
- RDU
Nonstop2h 12m
United Airlines
Deal found 4/9![United Airlines logo]()
$301
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/221:09 pm
RDU
- PIA
1 stop5h 42m
American Airlines
Sun 4/267:05 pm
PIA
- RDU
1 stop3h 54m
American Airlines
Deal found 4/6![American Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:29 pm
RDU
- RFD
1 stop13h 46m
Multiple Airlines
Mon 7/67:50 pm
RFD
- RDU
1 stop12h 29m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:10 pm
RDU
- MDW
1 stop7h 05m
Southwest
Sun 5/177:40 am
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 4/10![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:15 am
RDU
- PIA
1 stop5h 21m
United Airlines
Sat 5/308:20 am
PIA
- RDU
1 stop4h 41m
United Airlines
Deal found 4/6![United Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/58:25 am
RDU
- EVV
1 stop5h 26m
Delta
Tue 5/121:42 pm
EVV
- RDU
1 stop4h 08m
Delta
Deal found 4/9![Delta logo]()
$334
This American Airlines deal was found by Cheapflights users on 4/8. 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.
Wed 5/611:22 am
RDU
- EVV
2 stops7h 31m
American Airlines
Wed 5/135:10 am
EVV
- RDU
1 stop6h 09m
American Airlines
Deal found 4/8![American Airlines logo]()
$339
Last-minute flights from Raleigh to IllinoisDiscover last-minute flight deals from Raleigh to Illinois. Data last updated April 10, 2026 and is based on user searches.
Discover last-minute flight deals from Raleigh to Illinois. Data last updated April 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/5. 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.
Fri 4/243:46 pm
RDU
- MDW
1 stop22h 14m
Multiple Airlines
Sun 4/267:30 am
MDW
- RDU
1 stop6h 18m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:00 pm
RDU
- STL
1 stop15h 50m
Frontier
Wed 5/65:27 pm
STL
- RDU
1 stop6h 06m
Frontier
Deal found 4/7![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:00 pm
RDU
- STL
1 stop15h 50m
Frontier
Thu 5/76:55 pm
STL
- RDU
1 stop12h 09m
Frontier
Deal found 4/7![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:00 pm
RDU
- STL
1 stop15h 50m
Frontier
Tue 5/56:41 pm
STL
- RDU
1 stop12h 23m
Frontier
Deal found 4/7![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Wed 4/294:00 pm
RDU
- STL
1 stop19h 26m
Frontier
Sat 5/28:23 pm
STL
- RDU
1 stop11h 00m
Frontier
Deal found 4/7![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 4/5. 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.
Fri 5/16:10 am
RDU
- ORD
1 stop5h 13m
Multiple Airlines
Sun 5/310:07 pm
ORD
- RDU
2 stops23h 53m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$178
This CheapOair deal was found by Cheapflights users on 4/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:51 pm
RDU
- STL
1 stop6h 28m
Frontier
Mon 5/44:59 pm
STL
- RDU
1 stop15h 54m
Frontier
Deal found 4/8![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 4/5. 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.
Mon 5/412:57 pm
RDU
- STL
1 stop11h 22m
Frontier
Thu 5/76:55 pm
STL
- RDU
1 stop4h 29m
Frontier
Deal found 4/5![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:57 pm
RDU
- STL
1 stop4h 57m
Frontier
Mon 5/115:27 pm
STL
- RDU
1 stop5h 57m
Frontier
Deal found 4/5![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 4/6. 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 5/712:57 pm
RDU
- STL
1 stop4h 57m
Frontier
Sat 5/95:27 pm
STL
- RDU
1 stop6h 02m
Frontier
Deal found 4/6![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:52 pm
RDU
- STL
1 stop29h 05m
Frontier
Sat 5/305:27 pm
STL
- RDU
1 stop5h 59m
Frontier
Deal found 4/9![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:21 pm
RDU
- STL
1 stop6h 36m
Frontier
Wed 6/35:27 pm
STL
- RDU
1 stop6h 06m
Frontier
Deal found 4/9![Frontier logo]()
$146
One-way flights from Raleigh to IllinoisSearch for one-way flight options from Raleigh to Illinois. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
Search for one-way flight options from Raleigh to Illinois. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
This Trip.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:15 am
RDU
- STL
1 stop12h 18m
Frontier
Deal found 4/7![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:15 am
RDU
- STL
1 stop12h 18m
Frontier
Deal found 4/8![Frontier logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:00 pm
RDU
- STL
1 stop15h 50m
Frontier
Deal found 4/5![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:15 am
RDU
- STL
1 stop27h 37m
Frontier
Deal found 4/6![Frontier logo]()
$65
This Trip.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:15 am
RDU
- STL
1 stop11h 39m
Frontier
Deal found 4/6![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:15 am
RDU
- STL
1 stop12h 18m
Frontier
Deal found 4/10![Frontier logo]()
$68
This Trip.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/712:54 pm
RDU
- STL
1 stop21h 01m
Frontier
Deal found 4/9![Frontier logo]()
$69
This Priceline deal was found by Cheapflights users on 4/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2412:26 pm
RDU
- STL
1 stop7h 57m
Frontier
Deal found 4/6![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:15 am
RDU
- STL
1 stop27h 40m
Frontier
Deal found 4/6![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1412:54 pm
RDU
- STL
1 stop20h 58m
Frontier
Deal found 4/6![Frontier logo]()
$75
This Expedia deal was found by Cheapflights users on 4/5. 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.
Fri 5/158:52 pm
RDU
- STL
1 stop28h 29m
Frontier
Deal found 4/5![Frontier logo]()
$76
This Expedia deal was found by Cheapflights users on 4/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:52 pm
RDU
- STL
1 stop28h 29m
Frontier
Deal found 4/6![Frontier logo]()
$77
Find flight deals from Raleigh to Illinois
Keep the following information in mind while searching for Raleigh to Illinois flight deals. Data was last updated April 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $126 (Kiwi.com) |
One-way from | $60 (Trip.com) |
Popular in | February |
Cheapest in | December |
Average price | $276 |
Good round-trip deal | $318 or less |
Good one-way deal | $185 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Raleigh to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 10, 2026.
Use the filters below to find and compare flights from Raleigh to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
RaleighChicago
RDU - RFD
RDURFD
Raleigh-Durham
Tue 7/14
10:17 pm-9:13 am
1 stop11h 56m
Chicago Greater Rockford
Fri 7/17
7:50 pm-9:19 am
1 stop12h 29m
$212
RaleighChicago
RDU - RFD
RDURFD
Raleigh-Durham
Tue 5/26
6:21 pm-9:21 am
1 stop16h 00m
Chicago Greater Rockford
Sun 5/31
11:27 am-8:04 am
2 stops19h 37m
$212
RaleighEvansville
RDU - EVV
RDUEVV
Raleigh-Durham
Sun 6/28
10:17 pm-7:45 pm
1 stop22h 28m
Evansville Dress Regional
Thu 7/2
8:13 am-9:51 pm
1 stop12h 38m
$231
RaleighChicago
RDU - RFD
RDURFD
Raleigh-Durham
Sun 7/19
10:36 pm-7:49 am
1 stop10h 13m
Chicago Greater Rockford
Fri 7/24
7:50 pm-9:19 am
1 stop12h 29m
$245
RaleighChicago
RDU - RFD
RDURFD
Raleigh-Durham
Thu 7/9
10:17 pm-7:00 pm
1 stop21h 43m
Chicago Greater Rockford
Mon 7/13
7:50 pm-9:19 am
1 stop12h 29m
$246
RaleighChicago
RDU - MDW
RDUMDW
Raleigh-Durham
Wed 5/6
6:10 am-11:35 am
1 stop6h 25m
Chicago Midway
Sat 5/9
7:50 am-10:40 am
Nonstop1h 50m
$247
RaleighChicago
RDU - MDW
RDUMDW
Raleigh-Durham
Fri 5/15
4:50 pm-11:55 pm
1 stop8h 05m
Chicago Midway
Tue 5/19
7:40 am-10:30 am
Nonstop1h 50m
$247
RaleighChicago
RDU - ORD
RDUORD
Raleigh-Durham
Tue 5/26
8:00 am-9:26 am
Nonstop2h 26m
Chicago O'Hare Intl
Thu 5/28
9:10 am-12:33 pm
Nonstop2h 23m
$251
RaleighChicago
RDU - RFD
RDURFD
Raleigh-Durham
Tue 7/21
10:17 pm-9:13 am
1 stop11h 56m
Chicago Greater Rockford
Mon 7/27
7:50 pm-9:19 am
1 stop12h 29m
$253
RaleighChicago
RDU - MDW
RDUMDW
Raleigh-Durham
Mon 5/4
7:45 pm-8:45 pm
Nonstop2h 00m
Chicago Midway
Wed 5/6
4:50 pm-9:35 pm
1 stop3h 45m
$261
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Raleigh to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Raleigh with our price prediction graph.
RDU-STL
RDU-ORD
RDU-MDW
RDU-RFD
RDU-PIA
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 Raleigh to Illinois
RDU-USIL
RDU-STL
RDU-ORD
RDU-MDW
RDU-RFD
What is the cheapest month to book a flight from Raleigh to Illinois?
Currently, January is the cheapest month in which you can book a flight from Raleigh to Illinois (average of $49). Flying from Raleigh to Illinois in March is currently the most expensive (average of $151). 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 RDU to IL?
Find hourly flight availability from Raleigh 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 April 10, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 27% on flights from Raleigh to Illinois by exploring options for tickets in the evening.
What is the cheapest day to fly from Raleigh to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Raleigh to Illinois. Price data was last updated on April 4, 2026.
Travelers seeking maximum savings on their Raleigh to Illinois flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Raleigh to Illinois
Explore weekly flight availability from Raleigh to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 10, 2026.
The most flights from RDU to USIL are scheduled on a Friday (37 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).
How much does it cost to fly round-trip from Raleigh to Illinois?
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 April 10, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andJetBlue from Raleigh to Illinois. 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.
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Raleigh 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 Raleigh to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Raleigh to Illinois by cabin class
Find flights from Raleigh to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Raleigh and Illinois flights
Browse other Raleigh and Illinois flight options. Last updated on April 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Raleigh to Illinois flights
Consider these flights traveling from Raleigh to Illinois.
Top 6 airlines flying from Raleigh to Illinois
Discover the top 6 airlines that operate flights from Raleigh to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$74 | Average$191 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$279 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$148 | Average$328 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$160 | Average$293 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$170 | Average$426 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$177 | Average$303 | FlexibilityNo cancel fee | On-time63% |