$39+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
mar 7 — mar 141
1 adult, Economy
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Find cheap flights from Raleigh to Illinois with Cheapflights
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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 febbraio 5, 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 febbraio 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 2/176:20 am
RDU
- STL
1 stop25h 31m
Frontier
mer 2/188:17 pm
STL
- RDU
1 stop20h 38m
Frontier
Deal found 2/3![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 2/206:54 pm
RDU
- STL
1 stop12h 57m
Frontier
lun 2/238:22 pm
STL
- RDU
1 stop26h 48m
Frontier
Deal found 2/4![Frontier logo]()
$131
This CheapOair deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 2/245:54 pm
RDU
- STL
1 stop5h 33m
Frontier
mar 3/33:49 pm
STL
- RDU
1 stop24h 10m
Frontier
Deal found 2/1![Frontier logo]()
$139
This Frontier deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 2/216:10 am
RDU
- ORD
1 stop5h 36m
Frontier
mer 2/256:02 pm
ORD
- RDU
1 stop5h 09m
Frontier
Deal found 2/2![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 2/266:10 am
RDU
- MDW
1 stop11h 06m
Frontier
lun 3/22:19 pm
MDW
- RDU
1 stop8h 51m
Frontier
Deal found 2/1![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/103:57 pm
RDU
- ORD
Nonstop2h 19m
Frontier
lun 4/131:19 pm
ORD
- RDU
Nonstop2h 07m
Frontier
Deal found 2/2![Frontier logo]()
$149
This CheapOair deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 3/46:25 am
RDU
- ORD
1 stop5h 26m
Multiple Airlines
sab 3/76:04 am
ORD
- RDU
1 stop7h 43m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 2/186:25 am
RDU
- ORD
1 stop11h 27m
Frontier
gio 2/194:42 pm
ORD
- RDU
1 stop6h 28m
Frontier
Deal found 2/2![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 2/106:25 am
RDU
- STL
1 stop25h 26m
Frontier
ven 2/138:20 pm
STL
- RDU
1 stop26h 50m
Frontier
Deal found 2/2![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 2/146:10 am
RDU
- ORD
1 stop17h 29m
Frontier
mar 2/1711:51 am
ORD
- RDU
1 stop11h 19m
Frontier
Deal found 2/2![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 2/86:10 am
RDU
- ORD
1 stop17h 04m
Frontier
sab 2/144:42 pm
ORD
- RDU
1 stop6h 28m
Frontier
Deal found 2/1![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 2/182:53 pm
RDU
- STL
1 stop8h 34m
Frontier
sab 2/219:41 am
STL
- RDU
1 stop9h 49m
Frontier
Deal found 2/2![Frontier logo]()
$154
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 febbraio 5, 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 febbraio 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 2/206:54 pm
RDU
- STL
1 stop12h 57m
Frontier
lun 2/238:22 pm
STL
- RDU
1 stop26h 48m
Frontier
Deal found 2/4![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 2/194:04 pm
RDU
- EVV
1 stop28h 02m
Multiple Airlines
lun 2/237:46 pm
EVV
- RDU
1 stop17h 12m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$184
This Delta deal was found by Cheapflights users on 2/4. 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.
gio 4/305:38 am
RDU
- STL
1 stop5h 04m
Delta
dom 5/36:00 am
STL
- RDU
1 stop4h 42m
Delta
Deal found 2/4![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 3/256:30 pm
RDU
- MDW
Nonstop2h 05m
Southwest
sab 3/286:45 pm
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/1![Southwest logo]()
$211
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 3/258:07 pm
RDU
- ORD
1 stop4h 37m
United Airlines
sab 3/285:45 pm
ORD
- RDU
1 stop4h 59m
United Airlines
Deal found 2/1![United Airlines logo]()
$231
This American Airlines deal was found by Cheapflights users on 2/4. 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.
gio 3/55:00 am
RDU
- BMI
1 stop7h 01m
American Airlines
lun 3/95:00 am
BMI
- RDU
1 stop5h 06m
American Airlines
Deal found 2/4![American Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 2/182:53 pm
RDU
- STL
1 stop8h 34m
Frontier
sab 2/219:41 am
STL
- RDU
1 stop9h 49m
Frontier
Deal found 2/2![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 3/1510:38 pm
RDU
- STL
2 stops15h 56m
Multiple Airlines
ven 3/2012:16 pm
STL
- RDU
1 stop10h 55m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$188
This CheapOair deal was found by Cheapflights users on 2/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 2/231:12 pm
RDU
- STL
1 stop11h 47m
Frontier
mar 2/243:49 pm
STL
- RDU
1 stop24h 10m
Frontier
Deal found 2/4![Frontier logo]()
$171
This Delta deal was found by Cheapflights users on 2/4. 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.
ven 3/61:01 pm
RDU
- STL
1 stop4h 41m
Delta
dom 3/86:32 am
STL
- RDU
1 stop4h 32m
Delta
Deal found 2/4![Delta logo]()
$197
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 3/246:50 am
RDU
- STL
1 stop4h 42m
Frontier
mer 3/254:51 pm
STL
- RDU
1 stop16h 02m
Frontier
Deal found 2/2![Frontier logo]()
$171
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 4/291:00 pm
RDU
- STL
1 stop4h 42m
Delta
gio 4/306:50 pm
STL
- RDU
1 stop4h 28m
Delta
Deal found 2/3![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 4/113:55 pm
RDU
- MDW
Nonstop2h 00m
Southwest
mar 4/144:50 pm
MDW
- RDU
1 stop3h 45m
Southwest
Deal found 2/2![Southwest logo]()
$225
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 3/167:59 pm
RDU
- STL
1 stop4h 59m
Delta
ven 3/205:59 pm
STL
- RDU
1 stop4h 33m
Delta
Deal found 2/3![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 2/4. 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.
mar 4/710:07 am
RDU
- ORD
Nonstop2h 25m
United Airlines
mer 4/88:45 am
ORD
- RDU
1 stop4h 21m
United Airlines
Deal found 2/4![United Airlines logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 3/266:00 am
RDU
- STL
1 stop5h 31m
Frontier
dom 3/2911:21 am
STL
- RDU
1 stop11h 50m
Frontier
Deal found 2/4![Frontier logo]()
$184
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/107:45 pm
RDU
- MDW
Nonstop2h 00m
Southwest
mar 4/147:40 am
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/2![Southwest logo]()
$228
This Delta deal was found by Cheapflights users on 2/4. 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.
ven 4/107:59 pm
RDU
- STL
1 stop4h 59m
Delta
sab 4/115:00 pm
STL
- RDU
1 stop6h 18m
Delta
Deal found 2/4![Delta logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 2/201:12 pm
RDU
- EVV
1 stop6h 54m
Multiple Airlines
lun 2/237:46 pm
EVV
- RDU
2 stops27h 24m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$239
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/36:15 am
RDU
- ORD
Nonstop2h 28m
United Airlines
mer 4/86:15 pm
ORD
- RDU
Nonstop2h 08m
United Airlines
Deal found 2/1![United Airlines logo]()
$244
This American Airlines deal was found by Cheapflights users on 2/5. 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.
ven 2/205:00 am
RDU
- BMI
1 stop7h 01m
American Airlines
mar 2/2411:31 am
BMI
- RDU
1 stop4h 14m
American Airlines
Deal found 2/5![American Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 2/4. 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.
mar 4/78:10 am
RDU
- MDW
Nonstop2h 00m
Southwest
mer 4/86:05 pm
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/4![Southwest logo]()
$231
This Orbitz deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/104:46 pm
RDU
- STL
1 stop16h 05m
Frontier
lun 4/138:16 pm
STL
- RDU
1 stop19h 49m
Frontier
Deal found 2/2![Frontier logo]()
$195
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 3/136:00 am
RDU
- ORD
Nonstop2h 31m
United Airlines
mar 3/172:15 pm
ORD
- RDU
Nonstop2h 02m
United Airlines
Deal found 2/3![United Airlines logo]()
$244
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 5/36:20 am
RDU
- ORD
Nonstop2h 28m
United Airlines
sab 5/99:15 pm
ORD
- RDU
Nonstop2h 15m
United Airlines
Deal found 2/1![United Airlines logo]()
$244
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 3/97:05 pm
RDU
- MDW
Nonstop2h 05m
Southwest
mar 3/106:15 pm
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/2![Southwest logo]()
$244
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 2/288:19 pm
RDU
- EVV
1 stop4h 34m
American Airlines
mar 3/37:04 am
EVV
- RDU
1 stop4h 58m
American Airlines
Deal found 2/2![American Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/36:15 am
RDU
- ORD
Nonstop2h 28m
United Airlines
mar 4/72:10 pm
ORD
- RDU
Nonstop2h 08m
United Airlines
Deal found 2/1![United Airlines logo]()
$244
This Southwest deal was found by Cheapflights users on 2/4. 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.
mar 4/78:10 am
RDU
- MDW
Nonstop2h 00m
Southwest
gio 4/92:40 pm
MDW
- RDU
Nonstop1h 50m
Southwest
Deal found 2/4![Southwest logo]()
$245
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 3/146:30 am
RDU
- ORD
Nonstop2h 30m
United Airlines
lun 3/167:10 am
ORD
- RDU
Nonstop1h 58m
United Airlines
Deal found 2/3![United Airlines logo]()
$244
Last-minute flights from Raleigh to IllinoisDiscover last-minute flight deals from Raleigh to Illinois. Data last updated febbraio 5, 2026 and is based on user searches.
Discover last-minute flight deals from Raleigh to Illinois. Data last updated febbraio 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 2/86:10 am
RDU
- ORD
1 stop17h 04m
Frontier
sab 2/144:42 pm
ORD
- RDU
1 stop6h 28m
Frontier
Deal found 2/1![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 2/106:25 am
RDU
- STL
1 stop25h 26m
Frontier
ven 2/138:20 pm
STL
- RDU
1 stop26h 50m
Frontier
Deal found 2/2![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 2/146:10 am
RDU
- ORD
1 stop17h 29m
Frontier
mar 2/1711:51 am
ORD
- RDU
1 stop11h 19m
Frontier
Deal found 2/2![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 2/176:20 am
RDU
- STL
1 stop25h 31m
Frontier
mer 2/188:17 pm
STL
- RDU
1 stop20h 38m
Frontier
Deal found 2/3![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 2/186:25 am
RDU
- ORD
1 stop11h 27m
Frontier
gio 2/194:42 pm
ORD
- RDU
1 stop6h 28m
Frontier
Deal found 2/2![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 2/182:53 pm
RDU
- STL
1 stop8h 34m
Frontier
sab 2/219:41 am
STL
- RDU
1 stop9h 49m
Frontier
Deal found 2/2![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 2/206:54 pm
RDU
- STL
1 stop12h 57m
Frontier
lun 2/238:22 pm
STL
- RDU
1 stop26h 48m
Frontier
Deal found 2/4![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 2/216:10 am
RDU
- ORD
1 stop5h 36m
Frontier
mer 2/256:02 pm
ORD
- RDU
1 stop5h 09m
Frontier
Deal found 2/2![Frontier logo]()
$144
This CheapOair deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 2/245:54 pm
RDU
- STL
1 stop5h 33m
Frontier
mar 3/33:49 pm
STL
- RDU
1 stop24h 10m
Frontier
Deal found 2/1![Frontier logo]()
$139
This Frontier deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 2/266:10 am
RDU
- MDW
1 stop11h 06m
Frontier
lun 3/22:19 pm
MDW
- RDU
1 stop8h 51m
Frontier
Deal found 2/1![Frontier logo]()
$148
This Priceline deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 2/266:15 am
RDU
- ORD
1 stop6h 39m
Multiple Airlines
gio 2/264:42 pm
ORD
- RDU
1 stop6h 28m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$155
This CheapOair deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 3/46:25 am
RDU
- ORD
1 stop5h 26m
Multiple Airlines
sab 3/76:04 am
ORD
- RDU
1 stop7h 43m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$150
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 febbraio 5, 2026.
Search for one-way flight options from Raleigh to Illinois. Find affordable one-way fares based on user searches. Data last updated febbraio 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 3/210:07 pm
RDU
- ORD
Nonstop2h 30m
Frontier
Deal found 2/3![Frontier logo]()
$39
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 2/2310:07 pm
RDU
- ORD
Nonstop2h 30m
Frontier
Deal found 2/2![Frontier logo]()
$40
This WAYA deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 3/46:25 am
RDU
- ORD
1 stop5h 26m
Frontier
Deal found 2/2![Frontier logo]()
$58
This Trip.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 2/252:53 pm
RDU
- STL
1 stop8h 34m
Frontier
Deal found 2/1![Frontier logo]()
$59
This Trip.com deal was found by Cheapflights users on 2/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 2/256:08 pm
RDU
- ORD
1 stop7h 32m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$61
This Trip.com deal was found by Cheapflights users on 2/3. 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.
gio 2/196:25 am
RDU
- MDW
1 stop6h 02m
Frontier
Deal found 2/3![Frontier logo]()
$61
This Trip.com deal was found by Cheapflights users on 2/3. 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.
ven 2/206:54 pm
RDU
- STL
1 stop12h 57m
Frontier
Deal found 2/3![Frontier logo]()
$61
This Mytrip deal was found by Cheapflights users on 2/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 3/56:08 pm
RDU
- ORD
1 stop7h 32m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$62
This Trip.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 2/86:10 am
RDU
- STL
1 stop25h 41m
Frontier
Deal found 2/1![Frontier logo]()
$62
This Frontier deal was found by Cheapflights users on 2/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 2/246:25 am
RDU
- ORD
1 stop5h 26m
Frontier
Deal found 2/3![Frontier logo]()
$64
This WAYA deal was found by Cheapflights users on 2/3. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 2/235:10 pm
RDU
- MDW
1 stop6h 19m
Frontier
Deal found 2/3![Frontier logo]()
$64
This WAYA deal was found by Cheapflights users on 2/5. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 3/25:10 pm
RDU
- MDW
1 stop6h 19m
Frontier
Deal found 2/5![Frontier logo]()
$65
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 febbraio 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $128 (Kiwi.com) |
One-way from | $39 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $324 |
Good round-trip deal | $324 or less |
Good one-way deal | $149 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 febbraio 5, 2026.
Use the filters below to find and compare flights from Raleigh to Illinois that are best for you.
Fly from
Raleigh
Fly to
Illinois
Route
Depart
Return
Price
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
ven 2/20
6:54 pm-6:51 am
1 stop12h 57m
Lambert-St Louis
lun 2/23
8:22 pm-12:10 am
1 stop26h 48m
$131
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
mer 2/18
2:53 pm-10:27 pm
1 stop8h 34m
Lambert-St Louis
sab 2/21
9:41 am-8:30 pm
1 stop9h 49m
$154
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
lun 2/23
1:12 pm-11:59 pm
1 stop11h 47m
Lambert-St Louis
mar 2/24
3:49 pm-4:59 pm
1 stop24h 10m
$171
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
mar 3/24
6:50 am-10:32 am
1 stop4h 42m
Lambert-St Louis
mer 3/25
4:51 pm-9:53 am
1 stop16h 02m
$171
RaleighEvansville
RDU - EVV
RDUEVV
Raleigh-Durham
gio 2/19
4:04 pm-7:06 pm
1 stop28h 02m
Evansville Dress Regional
lun 2/23
7:46 pm-1:58 pm
1 stop17h 12m
$184
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
gio 3/26
6:00 am-10:31 am
1 stop5h 31m
Lambert-St Louis
dom 3/29
11:21 am-12:11 am
1 stop11h 50m
$184
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
dom 3/15
10:38 pm-1:34 pm
2 stops15h 56m
Lambert-St Louis
ven 3/20
12:16 pm-12:11 am
1 stop10h 55m
$188
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
ven 4/10
4:46 pm-7:51 am
1 stop16h 05m
Lambert-St Louis
lun 4/13
8:16 pm-5:05 pm
1 stop19h 49m
$195
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
gio 4/30
5:38 am-9:42 am
1 stop5h 04m
Lambert-St Louis
dom 5/3
6:00 am-11:42 am
1 stop4h 42m
$197
RaleighSt. Louis
RDU - STL
RDUSTL
Raleigh-Durham
ven 3/6
1:01 pm-4:42 pm
1 stop4h 41m
Lambert-St Louis
dom 3/8
6:32 am-12:04 pm
1 stop4h 32m
$197
Showing 1-10 of 60 results
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-EVV
RDU-MDW
RDU-ORD
RDU-BMI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Raleigh to Illinois
RDU-USIL
RDU-STL
RDU-EVV
RDU-MDW
RDU-ORD
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 $59). Flying from Raleigh to Illinois in April is currently the most expensive (average of $200). 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 febbraio 5, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 28% 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 January 31, 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 febbraio 5, 2026.
The most flights from RDU to USIL are scheduled on a Monday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 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 febbraio 5, 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.
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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
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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 febbraio 5, 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 febbraio 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$69 | Average$191 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$307 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$151 | Average$325 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$160 | Average$293 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$173 | Average$428 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$177 | Average$312 | FlexibilityNo cancel fee | On-time63% |