$63+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
Sep 16 — Sep 231
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 August 17, 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 August 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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.
Mon 9/286:35 am -
1 stop7h 35m
Mon 10/52:29 pm -
1 stop9h 00m
Deal found 8/14![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 9/241:56 pm -
1 stop24h 14m
Mon 9/282:29 pm -
1 stop21h 09m
Deal found 8/16![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/101:56 pm -
1 stop24h 14m
Mon 9/142:29 pm -
1 stop21h 09m
Deal found 8/15![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 9/116:35 am -
1 stop7h 35m
Mon 9/142:29 pm -
1 stop21h 09m
Deal found 8/13![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/291:56 pm -
1 stop24h 14m
Fri 10/22:29 pm -
1 stop21h 09m
Deal found 8/14![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 10/293:54 pm -
1 stop18h 46m
Sun 11/110:35 am -
1 stop12h 42m
Deal found 8/14![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:30 am -
1 stop26h 10m
Thu 11/510:35 am -
1 stop12h 42m
Deal found 8/12![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 9/236:35 am -
1 stop7h 35m
Mon 9/282:29 pm -
1 stop21h 09m
Deal found 8/13![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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.
Mon 9/146:35 am -
1 stop7h 35m
Wed 9/162:29 pm -
1 stop9h 00m
Deal found 8/12![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/221:56 pm -
1 stop22h 55m
Fri 9/253:50 pm -
2 stops16h 50m
Deal found 8/15![Frontier logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/116:35 am -
2 stops30h 24m
Mon 9/146:25 am -
1 stop5h 13m
Deal found 8/15![Frontier logo]()
$234
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:17 pm -
1 stop7h 06m
Sun 9/272:46 pm -
1 stop22h 18m
Deal found 8/13![Frontier logo]()
$235
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 August 17, 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 August 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 10/299:42 pm -
1 stop11h 12m
Mon 11/25:55 pm -
1 stop15h 04m
Deal found 8/14![Multiple Airlines logo]()
$239
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/106:25 am -
Nonstop2h 24m
Mon 9/146:28 pm -
Nonstop2h 21m
Deal found 8/17![United Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 10/156:55 am -
Nonstop2h 00m
Sat 10/174:20 pm -
Nonstop1h 55m
Deal found 8/17![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 9/3011:13 am -
1 stop6h 16m
Wed 10/76:00 am -
1 stop4h 27m
Deal found 8/16![Delta logo]()
$271
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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.
Tue 9/226:23 pm -
Nonstop2h 42m
Fri 9/258:46 am -
Nonstop2h 23m
Deal found 8/17![American Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/109:35 pm -
1 stop12h 17m
Mon 9/145:20 pm -
1 stop15h 39m
Deal found 8/14![Multiple Airlines logo]()
$262
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/307:05 am -
1 stop5h 55m
Sat 10/310:33 am -
Nonstop2h 16m
Deal found 8/14![United Airlines logo]()
$273
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 11/51:45 pm -
Nonstop2h 05m
Sun 11/87:45 am -
Nonstop1h 55m
Deal found 8/13![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 10/36:26 pm -
1 stop6h 33m
Mon 10/55:30 am -
1 stop4h 56m
Deal found 8/17![Delta logo]()
$287
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/3012:06 pm -
1 stop5h 05m
Sun 10/45:40 am -
1 stop5h 19m
Deal found 8/14![American Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 9/196:00 am -
1 stop4h 38m
Mon 9/212:07 pm -
Nonstop2h 11m
Deal found 8/16![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 9/246:00 am -
Nonstop2h 05m
Mon 9/286:50 pm -
Nonstop1h 55m
Deal found 8/16![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:15 am -
1 stop6h 40m
Mon 10/512:00 pm -
1 stop4h 11m
Deal found 8/14![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 10/307:50 pm -
Nonstop2h 10m
Sat 10/3111:20 am -
1 stop5h 45m
Deal found 8/13![Southwest logo]()
$282
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 10/37:05 am -
1 stop5h 55m
Sun 10/119:05 am -
Nonstop2h 23m
Deal found 8/13![United Airlines logo]()
$283
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:47 pm -
1 stop5h 16m
Sun 10/45:02 am -
1 stop6h 07m
Deal found 8/13![American Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/91:14 pm -
1 stop22h 51m
Sun 9/139:29 pm -
2 stops34h 40m
Deal found 8/15![Multiple Airlines logo]()
$336
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 10/18:45 pm -
1 stop4h 10m
Sun 10/48:55 pm -
Nonstop2h 00m
Deal found 8/13![Southwest logo]()
$287
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:49 pm -
1 stop6h 47m
Mon 11/24:26 pm -
1 stop7h 02m
Deal found 8/13![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:15 pm -
2 stops6h 53m
Fri 9/184:27 pm -
1 stop5h 30m
Deal found 8/12![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/108:00 am -
1 stop6h 41m
Sat 12/123:30 pm -
1 stop4h 32m
Deal found 8/15![United Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:55 pm -
Nonstop2h 05m
Tue 10/63:00 pm -
1 stop5h 10m
Deal found 8/15![Southwest logo]()
$287
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:20 am -
1 stop5h 58m
Sat 9/126:08 am -
1 stop4h 18m
Deal found 8/16![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:02 am -
2 stops8h 55m
Sat 11/72:32 pm -
1 stop4h 13m
Deal found 8/13![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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 9/236:25 am -
1 stop4h 32m
Sun 9/276:15 am -
1 stop6h 34m
Deal found 8/12![United Airlines logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 10/229:30 pm -
1 stop11h 24m
Sun 10/258:53 pm -
2 stops13h 18m
Deal found 8/17![Multiple Airlines logo]()
$373
This Southwest deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 11/186:05 am -
Nonstop2h 15m
Sat 11/212:45 pm -
1 stop4h 20m
Deal found 8/14![Southwest logo]()
$287
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:57 am -
1 stop6h 47m
Sun 11/14:26 pm -
1 stop7h 02m
Deal found 8/15![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:23 pm -
1 stop6h 40m
Sat 9/125:02 am -
2 stops9h 02m
Deal found 8/16![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:05 am -
Nonstop2h 22m
Tue 10/1312:55 pm -
Nonstop2h 08m
Deal found 8/16![United Airlines logo]()
$306
Last-minute flights from Raleigh to IllinoisDiscover last-minute flight deals from Raleigh to Illinois. Data last updated August 17, 2026 and is based on user searches.
Discover last-minute flight deals from Raleigh to Illinois. Data last updated August 17, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/101:56 pm -
1 stop24h 14m
Mon 9/142:29 pm -
1 stop21h 09m
Deal found 8/15![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 9/116:35 am -
1 stop7h 35m
Mon 9/142:29 pm -
1 stop21h 09m
Deal found 8/13![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/116:35 am -
2 stops30h 24m
Mon 9/146:25 am -
1 stop5h 13m
Deal found 8/15![Frontier logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/131:56 pm -
1 stop24h 14m
Wed 9/232:29 pm -
1 stop9h 00m
Deal found 8/14![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/1710:35 am -
1 stop29h 10m
Mon 9/217:28 pm -
1 stop16h 10m
Deal found 8/15![Frontier logo]()
$236
This Expedia deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 9/181:56 pm -
1 stop10h 48m
Sun 9/206:46 pm -
1 stop4h 43m
Deal found 8/16![Frontier logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/221:56 pm -
1 stop22h 55m
Fri 9/253:50 pm -
2 stops16h 50m
Deal found 8/15![Frontier logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 9/236:35 am -
1 stop7h 35m
Mon 9/282:29 pm -
1 stop21h 09m
Deal found 8/13![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 9/241:56 pm -
1 stop24h 14m
Mon 9/282:29 pm -
1 stop21h 09m
Deal found 8/16![Frontier logo]()
$129
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:17 pm -
1 stop7h 06m
Sun 9/272:46 pm -
1 stop22h 18m
Deal found 8/13![Frontier logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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.
Mon 9/286:35 am -
1 stop7h 35m
Mon 10/52:29 pm -
1 stop9h 00m
Deal found 8/14![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/291:56 pm -
1 stop24h 14m
Fri 10/22:29 pm -
1 stop21h 09m
Deal found 8/14![Frontier logo]()
$138
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 August 17, 2026.
Search for one-way flight options from Raleigh to Illinois. Find affordable one-way fares based on user searches. Data last updated August 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 9/131:56 pm -
1 stop24h 14m
Deal found 8/16![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:54 pm -
1 stop18h 46m
Deal found 8/13![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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.
Mon 10/121:16 pm -
1 stop5h 24m
Deal found 8/16![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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.
Mon 9/146:35 am -
1 stop7h 35m
Deal found 8/14![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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 10/318:30 am -
1 stop27h 10m
Deal found 8/12![Frontier logo]()
$69
This Trip.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:35 am -
1 stop7h 35m
Deal found 8/17![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 9/116:35 am -
1 stop7h 35m
Deal found 8/13![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/101:56 pm -
1 stop24h 14m
Deal found 8/14![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 9/151:56 pm -
1 stop24h 14m
Deal found 8/13![Frontier logo]()
$75
This Super.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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.
Fri 9/116:17 pm -
1 stop7h 06m
Deal found 8/17![Frontier logo]()
$111
This CheapOair deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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.
Fri 9/181:56 pm -
1 stop4h 55m
Deal found 8/17![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” 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 9/1010:35 am -
2 stops15h 10m
Deal found 8/13![Frontier logo]()
$113
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 August 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $126 (Kiwi.com) |
One-way from | $63 (Kiwi.com) |
Popular in | July |
Cheapest in | December |
Average price | $304 |
Good round-trip deal | $320 or less |
Good one-way deal | $216 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 August 17, 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 Raleigh-Durham - RFD Chicago Greater Rockford
RDURFD
Raleigh-Durham
Thu 10/29
9:42 pm-7:54 am
1 stop11h 12m
Chicago Greater Rockford
Mon 11/2
5:55 pm-9:59 am
1 stop15h 04m
$239
RaleighChicago
RDU Raleigh-Durham - RFD Chicago Greater Rockford
RDURFD
Raleigh-Durham
Thu 9/10
9:35 pm-8:52 am
1 stop12h 17m
Chicago Greater Rockford
Mon 9/14
5:20 pm-9:59 am
1 stop15h 39m
$262
RaleighChicago
RDU Raleigh-Durham - ORD Chicago O'Hare Intl
RDUORD
Raleigh-Durham
Thu 9/10
6:25 am-7:49 am
Nonstop2h 24m
Chicago O'Hare Intl
Mon 9/14
6:28 pm-9:49 pm
Nonstop2h 21m
$267
Quickest round-trip
RaleighChicago
RDU Raleigh-Durham - MDW Chicago Midway
RDUMDW
Raleigh-Durham
Thu 10/15
6:55 am-7:55 am
Nonstop2h 00m
Chicago Midway
Sat 10/17
4:20 pm-7:15 pm
Nonstop1h 55m
$267
RaleighMoline
RDU Raleigh-Durham - MLI Moline Quad-City
RDUMLI
Raleigh-Durham
Wed 9/30
11:13 am-4:29 pm
1 stop6h 16m
Moline Quad-City
Wed 10/7
6:00 am-11:27 am
1 stop4h 27m
$271
RaleighChicago
RDU Raleigh-Durham - ORD Chicago O'Hare Intl
RDUORD
Raleigh-Durham
Wed 9/30
7:05 am-12:00 pm
1 stop5h 55m
Chicago O'Hare Intl
Sat 10/3
10:33 am-1:49 pm
Nonstop2h 16m
$273
RaleighChicago
RDU Raleigh-Durham - MDW Chicago Midway
RDUMDW
Raleigh-Durham
Thu 11/5
1:45 pm-2:50 pm
Nonstop2h 05m
Chicago Midway
Sun 11/8
7:45 am-10:40 am
Nonstop1h 55m
$277
RaleighChicago
RDU Raleigh-Durham - ORD Chicago O'Hare Intl
RDUORD
Raleigh-Durham
Sat 9/19
6:00 am-9:38 am
1 stop4h 38m
Chicago O'Hare Intl
Mon 9/21
2:07 pm-5:18 pm
Nonstop2h 11m
$277
RaleighSt. Louis
RDU Raleigh-Durham - STL Lambert-St Louis
RDUSTL
Raleigh-Durham
Thu 9/24
6:00 am-7:05 am
Nonstop2h 05m
Lambert-St Louis
Mon 9/28
6:50 pm-9:45 pm
Nonstop1h 55m
$277
RaleighSt. Louis
RDU Raleigh-Durham - STL Lambert-St Louis
RDUSTL
Raleigh-Durham
Fri 10/30
7:50 pm-9:00 pm
Nonstop2h 10m
Lambert-St Louis
Sat 10/31
11:20 am-6:05 pm
1 stop5h 45m
$282
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-RFD
RDU-ORD
RDU-MDW
RDU-MLI
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-RFD
RDU-ORD
RDU-MDW
RDU-MLI
What is the cheapest month to book a flight from Raleigh to Illinois?
Currently, October is the cheapest month in which you can book a flight from Raleigh to Illinois (average of $242). Flying from Raleigh to Illinois in July is currently the most expensive (average of $394). 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 August 17, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 23% on flights from Raleigh to Illinois by exploring options for tickets in the evening.
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 August 17, 2026.
The most flights from RDU to USIL are scheduled on a Friday (34 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (26 on average).
How much does it cost to fly round-trip from Raleigh to Illinois?
Airfare is below average for this route at the moment.
Raleigh to Illinois flights typically cost between $285 and $372 in October.The cheapest round-trip price found within the last 5 days was $232 on Multiple Airlines (Oct 4-Oct 7).
How far ahead should I book a flight from Raleigh to Illinois?
To ensure you get the cheapest price possible for a flight from Raleigh to Illinois, you should look to book at least 75 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 August 15, 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 evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated August 17, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican 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.
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from 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
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Raleigh and Illinois flights
Browse other Raleigh and Illinois flight options. Last updated on August 17, 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 August 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$68 | Average$198 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$371 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$160 | Average$327 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$171 | Average$357 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$179 | Average$433 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$197 | Average$346 | FlexibilityNo cancel fee | On-time63% |