$46+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
mar. 30 — abr. 61
1 adult, Economy
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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 febrero 28, 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 febrero 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/26. 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.
vie. 4/106:43 pm
RDU
- STL
1 stop16h 05m
Frontier
lun. 4/138:19 pm
STL
- RDU
1 stop20h 43m
Frontier
Deal found 2/26![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
mié. 3/186:50 am
RDU
- STL
1 stop4h 47m
Frontier
lun. 3/2312:16 pm
STL
- RDU
1 stop10h 55m
Frontier
Deal found 2/25![Frontier logo]()
$150
This Frontier deal was found by Cheapflights users on 2/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/141:40 pm
RDU
- STL
1 stop10h 39m
Frontier
vie. 4/178:39 am
STL
- RDU
1 stop8h 31m
Frontier
Deal found 2/25![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
mar. 4/76:00 am
RDU
- STL
1 stop5h 30m
Frontier
jue. 4/96:29 pm
STL
- RDU
1 stop13h 17m
Frontier
Deal found 2/28![Frontier logo]()
$162
This Frontier deal was found by Cheapflights users on 2/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/164:08 pm
RDU
- ORD
Nonstop2h 19m
Frontier
lun. 4/202:10 pm
ORD
- RDU
Nonstop2h 07m
Frontier
Deal found 2/28![Frontier logo]()
$163
This Southwest deal was found by Cheapflights users on 2/25. 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.
sáb. 4/183:55 pm
RDU
- MDW
Nonstop2h 00m
Southwest
lun. 4/206:55 pm
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/25![Southwest logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 2/26. 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.
jue. 4/233:42 pm
RDU
- ORD
1 stop7h 57m
Multiple Airlines
lun. 4/279:44 pm
ORD
- RDU
2 stops16h 20m
Multiple Airlines
Deal found 2/26![Multiple Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
mié. 3/254:12 pm
RDU
- ORD
1 stop7h 27m
Frontier
lun. 4/61:19 pm
ORD
- RDU
Nonstop2h 07m
Frontier
Deal found 2/25![Frontier logo]()
$165
This CheapOair deal was found by Cheapflights users on 2/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/216:25 pm
RDU
- ORD
1 stop6h 57m
Spirit Airlines
mar. 3/246:01 pm
ORD
- RDU
1 stop22h 28m
Spirit Airlines
Deal found 2/26![Spirit Airlines logo]()
$166
This Super.com deal was found by Cheapflights users on 2/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/173:49 pm
RDU
- MDW
1 stop7h 37m
Frontier
dom. 4/199:04 am
MDW
- RDU
1 stop24h 03m
Frontier
Deal found 2/25![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
mié. 5/206:00 am
RDU
- ORD
1 stop13h 54m
Multiple Airlines
mar. 5/261:15 pm
ORD
- RDU
1 stop30h 25m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 2/25. 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.
vie. 5/153:54 pm
RDU
- ORD
Nonstop2h 32m
American Airlines
sáb. 5/169:46 am
ORD
- RDU
Nonstop2h 12m
American Airlines
Deal found 2/25![American Airlines logo]()
$168
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 febrero 28, 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 febrero 28, 2026.
This Delta deal was found by Cheapflights users on 2/25. 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.
sáb. 4/184:58 pm
RDU
- ORD
1 stop4h 18m
Delta
lun. 4/2011:19 am
ORD
- RDU
1 stop6h 35m
Delta
Deal found 2/25![Delta logo]()
$181
This United Airlines deal was found by Cheapflights users on 2/26. 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.
mié. 4/225:25 pm
RDU
- ORD
Nonstop2h 35m
United Airlines
jue. 4/236:45 am
ORD
- RDU
Nonstop2h 00m
United Airlines
Deal found 2/26![United Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 2/28. 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.
vie. 5/158:20 pm
RDU
- MDW
1 stop4h 10m
Southwest
lun. 5/186:55 pm
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/28![Southwest logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/1310:44 am
RDU
- EVV
1 stop6h 05m
Multiple Airlines
sáb. 5/164:29 pm
EVV
- RDU
2 stops15h 17m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$234
This Expedia deal was found by Cheapflights users on 2/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/1410:38 pm
RDU
- STL
1 stop9h 24m
Frontier
lun. 3/168:10 pm
STL
- RDU
1 stop11h 27m
Frontier
Deal found 2/28![Frontier logo]()
$250
This American Airlines deal was found by Cheapflights users on 2/27. 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.
vie. 3/136:50 am
RDU
- BMI
1 stop9h 25m
American Airlines
mar. 3/173:05 pm
BMI
- RDU
1 stop5h 46m
American Airlines
Deal found 2/27![American Airlines logo]()
$296
This United Airlines deal was found by Cheapflights users on 2/24. 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.
sáb. 4/181:15 pm
RDU
- ORD
Nonstop2h 36m
United Airlines
lun. 4/202:10 pm
ORD
- RDU
Nonstop2h 08m
United Airlines
Deal found 2/24![United Airlines logo]()
$231
This Southwest deal was found by Cheapflights users on 2/24. 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.
vie. 4/104:25 pm
RDU
- MDW
1 stop5h 35m
Southwest
sáb. 4/117:50 am
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/24![Southwest logo]()
$233
This Delta deal was found by Cheapflights users on 2/25. 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.
mié. 5/205:40 am
RDU
- ORD
1 stop5h 47m
Delta
mar. 5/262:59 pm
ORD
- RDU
1 stop5h 59m
Delta
Deal found 2/25![Delta logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
jue. 3/1210:38 pm
RDU
- EVV
1 stop21h 28m
Multiple Airlines
lun. 3/167:46 pm
EVV
- RDU
1 stop12h 14m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$252
This United Airlines deal was found by Cheapflights users on 2/24. 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.
sáb. 4/183:00 pm
RDU
- ORD
Nonstop2h 36m
United Airlines
dom. 4/197:00 am
ORD
- RDU
Nonstop2h 06m
United Airlines
Deal found 2/24![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 2/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/137:45 pm
RDU
- MDW
Nonstop2h 00m
Southwest
lun. 4/206:55 pm
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/27![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 2/28. 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.
dom. 4/196:15 am
RDU
- ORD
Nonstop2h 28m
United Airlines
dom. 4/196:15 pm
ORD
- RDU
Nonstop2h 08m
United Airlines
Deal found 2/28![United Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 2/25. 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.
dom. 4/128:55 pm
RDU
- MDW
1 stop4h 25m
Southwest
sáb. 4/187:50 am
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/25![Southwest logo]()
$249
This Delta deal was found by Cheapflights users on 2/27. 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.
mar. 3/1710:11 am
RDU
- MLI
1 stop7h 21m
Delta
mar. 3/245:15 pm
MLI
- RDU
1 stop6h 03m
Delta
Deal found 2/27![Delta logo]()
$274
This American Airlines deal was found by Cheapflights users on 2/24. 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.
mié. 4/1511:22 am
RDU
- EVV
2 stops7h 31m
American Airlines
sáb. 4/185:10 am
EVV
- RDU
1 stop6h 09m
American Airlines
Deal found 2/24![American Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
vie. 5/2910:49 am
RDU
- RFD
1 stop9h 24m
Multiple Airlines
dom. 5/3111:27 am
RFD
- RDU
1 stop8h 05m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 2/27. 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.
mar. 3/174:53 pm
RDU
- MLI
1 stop6h 37m
Delta
lun. 3/235:15 pm
MLI
- RDU
1 stop6h 03m
Delta
Deal found 2/27![Delta logo]()
$274
This American Airlines deal was found by Cheapflights users on 2/26. 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.
sáb. 3/145:00 am
RDU
- BMI
1 stop7h 01m
American Airlines
lun. 3/162:56 pm
BMI
- RDU
2 stops5h 50m
American Airlines
Deal found 2/26![American Airlines logo]()
$302
This Southwest deal was found by Cheapflights users on 2/25. 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.
vie. 4/1710:10 am
RDU
- MDW
1 stop5h 55m
Southwest
dom. 4/197:40 am
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/25![Southwest logo]()
$256
This United Airlines deal was found by Cheapflights users on 2/26. 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.
sáb. 3/146:30 am
RDU
- PIA
1 stop7h 13m
United Airlines
mié. 3/186:35 am
PIA
- RDU
1 stop6h 07m
United Airlines
Deal found 2/26![United Airlines logo]()
$279
This American Airlines deal was found by Cheapflights users on 2/25. 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.
jue. 3/125:40 pm
RDU
- MLI
1 stop6h 57m
American Airlines
lun. 3/167:09 pm
MLI
- RDU
1 stop3h 58m
American Airlines
Deal found 2/25![American Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 2/24. 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.
mar. 5/55:50 am
RDU
- MDW
2 stops7h 10m
Southwest
sáb. 5/911:20 am
MDW
- RDU
2 stops7h 35m
Southwest
Deal found 2/24![Southwest logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/49:49 pm
RDU
- RFD
1 stop10h 56m
Multiple Airlines
lun. 6/87:53 pm
RFD
- RDU
1 stop11h 27m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$327
This United Airlines deal was found by Cheapflights users on 2/24. 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.
jue. 3/266:00 am
RDU
- ORD
Nonstop2h 31m
United Airlines
jue. 4/22:10 pm
ORD
- RDU
Nonstop2h 08m
United Airlines
Deal found 2/24![United Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 2/27. 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.
vie. 3/136:15 am
RDU
- BMI
1 stop6h 04m
Delta
mar. 3/176:00 am
BMI
- RDU
1 stop4h 39m
Delta
Deal found 2/27![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 2/24. 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.
mié. 4/16:30 pm
RDU
- MDW
Nonstop2h 05m
Southwest
lun. 4/66:45 pm
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/24![Southwest logo]()
$273
This American Airlines deal was found by Cheapflights users on 2/25. 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.
jue. 3/125:40 pm
RDU
- SPI
1 stop6h 52m
American Airlines
lun. 3/166:37 pm
SPI
- RDU
1 stop4h 30m
American Airlines
Deal found 2/25![American Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
vie. 7/108:29 pm
RDU
- RFD
1 stop13h 46m
Multiple Airlines
lun. 7/137:50 pm
RFD
- RDU
1 stop13h 10m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$347
This United Airlines deal was found by Cheapflights users on 2/24. 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.
sáb. 3/281:27 pm
RDU
- ORD
Nonstop2h 28m
United Airlines
dom. 3/296:15 pm
ORD
- RDU
Nonstop2h 08m
United Airlines
Deal found 2/24![United Airlines logo]()
$290
Last-minute flights from Raleigh to IllinoisDiscover last-minute flight deals from Raleigh to Illinois. Data last updated febrero 28, 2026 and is based on user searches.
Discover last-minute flight deals from Raleigh to Illinois. Data last updated febrero 28, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 2/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/49:25 pm
RDU
- STL
1 stop27h 34m
Frontier
mié. 3/114:51 pm
STL
- RDU
1 stop16h 02m
Frontier
Deal found 2/25![Frontier logo]()
$192
This Priceline deal was found by Cheapflights users on 2/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/93:08 pm
RDU
- ORD
1 stop7h 05m
Multiple Airlines
mar. 3/109:28 am
ORD
- RDU
1 stop4h 49m
Multiple Airlines
Deal found 2/26![Multiple Airlines logo]()
$184
This Cheapflightsfares deal was found by Cheapflights users on 2/25. 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.
lun. 3/93:08 pm
RDU
- ORD
1 stop9h 39m
Spirit Airlines
jue. 3/127:17 am
ORD
- RDU
1 stop10h 27m
Spirit Airlines
Deal found 2/25![Spirit Airlines logo]()
$192
This Frontier deal was found by Cheapflights users on 2/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/104:12 pm
RDU
- MDW
1 stop5h 42m
Frontier
mar. 3/176:00 am
MDW
- RDU
1 stop8h 17m
Frontier
Deal found 2/28![Frontier logo]()
$181
This Expedia deal was found by Cheapflights users on 2/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/1710:38 pm
RDU
- STL
1 stop9h 59m
Frontier
jue. 3/198:02 am
STL
- RDU
1 stop12h 51m
Frontier
Deal found 2/26![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
mié. 3/186:50 am
RDU
- STL
1 stop4h 47m
Frontier
lun. 3/2312:16 pm
STL
- RDU
1 stop10h 55m
Frontier
Deal found 2/25![Frontier logo]()
$150
This Trip.com deal was found by Cheapflights users on 2/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/184:12 pm
RDU
- MDW
1 stop7h 07m
Frontier
mar. 3/246:00 am
MDW
- RDU
1 stop8h 17m
Frontier
Deal found 2/25![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
vie. 3/204:07 pm
RDU
- MDW
1 stop7h 12m
Frontier
mar. 3/246:00 am
MDW
- RDU
1 stop8h 17m
Frontier
Deal found 2/28![Frontier logo]()
$191
This Priceline deal was found by Cheapflights users on 2/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/234:07 pm
RDU
- MDW
1 stop7h 12m
Frontier
mar. 3/246:00 am
MDW
- RDU
1 stop8h 17m
Frontier
Deal found 2/26![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
mié. 3/254:12 pm
RDU
- MDW
1 stop7h 07m
Frontier
lun. 3/306:00 am
MDW
- RDU
1 stop17h 11m
Frontier
Deal found 2/25![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
mié. 3/254:12 pm
RDU
- MDW
1 stop7h 07m
Frontier
lun. 4/62:56 pm
MDW
- RDU
1 stop6h 57m
Frontier
Deal found 2/25![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
mar. 3/314:12 pm
RDU
- MDW
1 stop5h 42m
Frontier
vie. 4/32:56 pm
MDW
- RDU
1 stop6h 59m
Frontier
Deal found 2/28![Frontier logo]()
$171
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 febrero 28, 2026.
Search for one-way flight options from Raleigh to Illinois. Find affordable one-way fares based on user searches. Data last updated febrero 28, 2026.
This Priceline deal was found by Cheapflights users on 2/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/209:47 pm
RDU
- ORD
Nonstop2h 19m
Frontier
Deal found 2/28![Frontier logo]()
$46
This Expedia deal was found by Cheapflights users on 2/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/179:47 pm
RDU
- ORD
Nonstop2h 19m
Frontier
Deal found 2/27![Frontier logo]()
$53
This Super.com deal was found by Cheapflights users on 2/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/103:57 pm
RDU
- ORD
Nonstop2h 19m
Frontier
Deal found 2/25![Frontier logo]()
$54
This Super.com deal was found by Cheapflights users on 2/27. 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.
dom. 4/1910:25 pm
RDU
- ORD
Nonstop2h 19m
Frontier
Deal found 2/27![Frontier logo]()
$57
This Expedia deal was found by Cheapflights users on 2/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/39:20 pm
RDU
- ORD
Nonstop2h 19m
Frontier
Deal found 2/25![Frontier logo]()
$58
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
mié. 4/226:11 pm
RDU
- ORD
1 stop28h 19m
Frontier
Deal found 2/25![Frontier logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 2/27. 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.
mié. 4/2210:54 am
RDU
- MDW
1 stop21h 32m
Frontier
Deal found 2/27![Frontier logo]()
$59
This Trip.com deal was found by Cheapflights users on 2/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/146:00 am
RDU
- ORD
1 stop12h 00m
Frontier
Deal found 2/25![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 2/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/144:00 pm
RDU
- MDW
1 stop7h 14m
Frontier
Deal found 2/25![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 2/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/93:57 pm
RDU
- ORD
1 stop7h 47m
Frontier
Deal found 2/27![Frontier logo]()
$61
This Trip.com deal was found by Cheapflights users on 2/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/93:57 pm
RDU
- MDW
1 stop7h 24m
Frontier
Deal found 2/27![Frontier logo]()
$61
This Trip.com deal was found by Cheapflights users on 2/26. 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.
mié. 5/204:07 pm
RDU
- ORD
1 stop7h 32m
Frontier
Deal found 2/26![Frontier logo]()
$62
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 febrero 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $138 (Kiwi.com) |
One-way from | $46 (Priceline) |
Popular in | February |
Cheapest in | October |
Average price | $336 |
Good round-trip deal | $298 or less |
Good one-way deal | $153 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 febrero 28, 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
RaleighChicago
RDU - ORD
RDUORD
Raleigh-Durham
sáb. 4/18
4:58 pm-8:16 pm
1 stop4h 18m
Chicago O'Hare Intl
lun. 4/20
11:19 am-6:54 pm
1 stop6h 35m
$181
RaleighChicago
RDU - ORD
RDUORD
Raleigh-Durham
mié. 4/22
5:25 pm-7:00 pm
Nonstop2h 35m
Chicago O'Hare Intl
jue. 4/23
6:45 am-9:45 am
Nonstop2h 00m
$227
RaleighChicago
RDU - MDW
RDUMDW
Raleigh-Durham
vie. 5/15
8:20 pm-11:30 pm
1 stop4h 10m
Chicago Midway
lun. 5/18
6:55 pm-9:45 pm
Nonstop1h 50m
$227
RaleighChicago
RDU - ORD
RDUORD
Raleigh-Durham
sáb. 4/18
1:15 pm-2:51 pm
Nonstop2h 36m
Chicago O'Hare Intl
lun. 4/20
2:10 pm-5:18 pm
Nonstop2h 08m
$231
RaleighChicago
RDU - MDW
RDUMDW
Raleigh-Durham
vie. 4/10
4:25 pm-9:00 pm
1 stop5h 35m
Chicago Midway
sáb. 4/11
7:50 am-10:40 am
Nonstop1h 50m
$233
RaleighEvansville
RDU - EVV
RDUEVV
Raleigh-Durham
mié. 5/13
10:44 am-3:49 pm
1 stop6h 05m
Evansville Dress Regional
sáb. 5/16
4:29 pm-8:46 am
2 stops15h 17m
$234
RaleighChicago
RDU - ORD
RDUORD
Raleigh-Durham
sáb. 4/18
3:00 pm-4:36 pm
Nonstop2h 36m
Chicago O'Hare Intl
dom. 4/19
7:00 am-10:06 am
Nonstop2h 06m
$239
RaleighChicago
RDU - MDW
RDUMDW
Raleigh-Durham
lun. 4/13
7:45 pm-8:45 pm
Nonstop2h 00m
Chicago Midway
lun. 4/20
6:55 pm-9:45 pm
Nonstop1h 50m
$247
RaleighChicago
RDU - ORD
RDUORD
Raleigh-Durham
dom. 4/19
6:15 am-7:43 am
Nonstop2h 28m
Chicago O'Hare Intl
dom. 4/19
6:15 pm-9:23 pm
Nonstop2h 08m
$247
RaleighChicago
RDU - ORD
RDUORD
Raleigh-Durham
mié. 5/20
5:40 am-10:27 am
1 stop5h 47m
Chicago O'Hare Intl
mar. 5/26
2:59 pm-9:58 pm
1 stop5h 59m
$249
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-MDW
RDU-ORD
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-MDW
RDU-ORD
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 April is currently the most expensive (average of $177). 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 febrero 28, 2026.
Unlike at noon, 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 February 21, 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 febrero 28, 2026.
The most flights from RDU to USIL are scheduled on a Monday (32 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (14 on average).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated febrero 28, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines 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
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
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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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 febrero 28, 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 febrero 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$191 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$322 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$149 | Average$324 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$160 | Average$293 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$171 | Average$431 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$177 | Average$311 | FlexibilityNo cancel fee | On-time63% |