$56+ Cheap flights from Raleigh (RDU) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
Oct 3 — Oct 101
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 September 3, 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 September 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 10/146:30 am -
1 stop12h 10m
Wed 10/216:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 10/76:35 am -
1 stop7h 35m
Wed 10/146:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 10/146:30 am -
1 stop12h 10m
Mon 10/196:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Mon 10/191:16 pm -
1 stop5h 24m
Wed 10/216:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Fri 10/26:35 am -
1 stop7h 35m
Wed 10/72:29 pm -
1 stop9h 00m
Deal found 9/2![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 10/146:30 am -
1 stop12h 10m
Fri 10/236:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Fri 10/161:16 pm -
1 stop5h 24m
Wed 10/216:35 pm -
1 stop27h 13m
Deal found 9/2![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/134:20 pm -
1 stop26h 20m
Wed 11/46:44 pm -
1 stop16h 40m
Deal found 8/31![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/146:30 am -
1 stop12h 10m
Mon 11/26:44 pm -
1 stop19h 39m
Deal found 8/31![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Thu 10/11:56 pm -
1 stop24h 14m
Wed 10/72:29 pm -
1 stop20h 59m
Deal found 9/2![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Mon 10/191:16 pm -
1 stop5h 24m
Fri 10/236:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$130
This Frontier deal was found by Cheapflights users on 9/2. 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.
Fri 10/26:35 am -
1 stop7h 35m
Mon 10/52:29 pm -
1 stop9h 00m
Deal found 9/2![Frontier logo]()
$131
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 September 3, 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 September 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Tue 10/205:26 pm -
1 stop16h 18m
Sun 10/2510:20 am -
2 stops25h 01m
Deal found 9/3![Multiple Airlines logo]()
$244
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/35:34 am -
1 stop4h 55m
Mon 10/54:59 pm -
1 stop4h 19m
Deal found 8/29![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 9/1. 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.
Tue 10/137:00 am -
Nonstop2h 00m
Mon 10/196:50 pm -
Nonstop1h 55m
Deal found 9/1![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Tue 10/67:05 am -
1 stop5h 55m
Sat 10/109:05 am -
Nonstop2h 23m
Deal found 9/1![United Airlines logo]()
$263
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 10/16:23 pm -
1 stop6h 42m
Sat 10/36:00 am -
1 stop7h 03m
Deal found 9/2![American Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/111:56 pm -
1 stop5h 27m
Sun 9/137:28 pm -
2 stops36h 41m
Deal found 8/29![Frontier logo]()
$368
This Delta deal was found by Cheapflights users on 9/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:13 pm -
1 stop4h 10m
Sat 10/1710:35 am -
1 stop4h 26m
Deal found 9/2![Delta logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/310:35 am -
1 stop23h 43m
Thu 10/89:40 am -
1 stop27h 19m
Deal found 8/30![Multiple Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 9/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:19 pm -
Nonstop2h 36m
Fri 11/277:30 am -
Nonstop2h 14m
Deal found 9/2![United Airlines logo]()
$268
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 11/118:05 am -
Nonstop2h 05m
Fri 11/136:45 pm -
Nonstop1h 50m
Deal found 9/2![Southwest logo]()
$268
This United Airlines deal was found by Cheapflights users on 9/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:00 am -
1 stop4h 55m
Sat 11/72:31 pm -
1 stop6h 08m
Deal found 9/2![United Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 9/1. 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.
Wed 9/306:15 am -
Nonstop2h 05m
Thu 10/15:40 pm -
1 stop5h 10m
Deal found 9/1![Southwest logo]()
$276
This Delta deal was found by Cheapflights users on 9/2. 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 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 9/2![Delta logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/144:20 pm -
2 stops17h 30m
Mon 10/1910:39 am -
1 stop21h 38m
Deal found 8/31![Multiple Airlines logo]()
$281
This American Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:44 pm -
1 stop4h 25m
Wed 9/164:57 pm -
1 stop6h 02m
Deal found 8/30![American Airlines logo]()
$310
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Wed 11/48:50 am -
1 stop6h 09m
Fri 11/67:30 am -
Nonstop2h 14m
Deal found 9/1![United Airlines logo]()
$274
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 10/76:20 am -
Nonstop2h 10m
Wed 10/145:50 am -
1 stop4h 05m
Deal found 9/2![Southwest logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 11/114:20 pm -
2 stops17h 20m
Fri 11/137:58 pm -
1 stop12h 01m
Deal found 9/2![Multiple Airlines logo]()
$282
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 pm -
1 stop4h 36m
Sun 11/16:02 am -
2 stops7h 57m
Deal found 9/3![American Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:15 am -
1 stop5h 19m
Mon 9/285:59 pm -
1 stop4h 13m
Deal found 9/1![Delta logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 11/59:30 pm -
1 stop12h 08m
Mon 11/910:38 am -
2 stops27h 45m
Deal found 8/31![Multiple Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sat 9/263:50 pm -
Nonstop2h 00m
Mon 9/286:30 pm -
Nonstop2h 00m
Deal found 9/2![Southwest logo]()
$290
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/25:34 am -
1 stop4h 55m
Mon 10/56:54 pm -
1 stop4h 34m
Deal found 8/29![Delta logo]()
$311
This American Airlines deal was found by Cheapflights users on 9/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:23 pm -
1 stop6h 42m
Sun 9/136:00 am -
2 stops8h 28m
Deal found 9/1![American Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Tue 10/135:26 pm -
1 stop16h 18m
Fri 10/167:56 pm -
1 stop12h 03m
Deal found 9/2![Multiple Airlines logo]()
$294
This Southwest deal was found by Cheapflights users on 9/1. 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.
Fri 10/3011:35 am -
2 stops7h 00m
Tue 11/310:20 am -
2 stops6h 25m
Deal found 9/1![Southwest logo]()
$298
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Fri 9/111:15 pm -
1 stop7h 16m
Sun 9/136:32 am -
1 stop5h 01m
Deal found 9/1![United Airlines logo]()
$340
This Delta deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:14 am -
1 stop6h 14m
Fri 10/165:35 pm -
1 stop3h 45m
Deal found 8/31![Delta logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/159:27 pm -
1 stop11h 32m
Mon 10/1910:39 am -
1 stop21h 38m
Deal found 8/29![Multiple Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 11/1412:07 pm -
2 stops9h 14m
Sun 11/156:08 am -
1 stop6h 05m
Deal found 9/2![American Airlines logo]()
$361
Last-minute flights from Raleigh to IllinoisDiscover last-minute flight deals from Raleigh to Illinois. Data last updated September 3, 2026 and is based on user searches.
Discover last-minute flight deals from Raleigh to Illinois. Data last updated September 3, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Thu 10/11:56 pm -
1 stop24h 14m
Wed 10/72:29 pm -
1 stop20h 59m
Deal found 9/2![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Fri 10/26:35 am -
1 stop7h 35m
Wed 10/72:29 pm -
1 stop9h 00m
Deal found 9/2![Frontier logo]()
$122
This Frontier deal was found by Cheapflights users on 9/2. 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.
Fri 10/26:35 am -
1 stop7h 35m
Mon 10/52:29 pm -
1 stop9h 00m
Deal found 9/2![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 10/76:35 am -
1 stop7h 35m
Wed 10/146:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/134:20 pm -
1 stop26h 20m
Wed 11/46:44 pm -
1 stop16h 40m
Deal found 8/31![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 10/146:30 am -
1 stop12h 10m
Wed 10/216:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 10/146:30 am -
1 stop12h 10m
Mon 10/196:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 10/146:30 am -
1 stop12h 10m
Fri 10/236:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/146:30 am -
1 stop12h 10m
Mon 11/26:44 pm -
1 stop19h 39m
Deal found 8/31![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Fri 10/161:16 pm -
1 stop5h 24m
Wed 10/216:35 pm -
1 stop27h 13m
Deal found 9/2![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Mon 10/191:16 pm -
1 stop5h 24m
Wed 10/216:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Mon 10/191:16 pm -
1 stop5h 24m
Fri 10/236:35 pm -
1 stop4h 53m
Deal found 9/2![Frontier logo]()
$130
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 September 3, 2026.
Search for one-way flight options from Raleigh to Illinois. Find affordable one-way fares based on user searches. Data last updated September 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Tue 11/34:20 pm -
1 stop26h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$56
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Wed 11/46:30 am -
1 stop12h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$58
This Trip.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 9/306:35 am -
1 stop7h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Tue 9/291:56 pm -
1 stop24h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Tue 12/16:00 am -
1 stop26h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Thu 10/11:56 pm -
1 stop24h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$73
This Frontier deal was found by Cheapflights users on 9/1. 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.
Thu 10/291:19 pm -
1 stop6h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$109
This Trip.com deal was found by Cheapflights users on 9/1. 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.
Wed 9/96:25 am -
1 stop12h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$110
This Super.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:56 pm -
1 stop4h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Frontier logo]()
$110
This Frontier deal was found by Cheapflights users on 9/2. 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.
Wed 9/1612:21 pm -
1 stop8h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$111
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 September 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $110 (Kiwi.com) |
One-way from | $56 (Kiwi.com) |
Popular in | July |
Cheapest in | December |
Average price | $295 |
Good round-trip deal | $326 or less |
Good one-way deal | $218 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 7,457,451 searches. Data last updated September 3, 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 - MDW Chicago Midway
RDUMDW
Raleigh-Durham
Sat 9/26
1:56 pm-5:51 pm
1 stop4h 55m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$113
RaleighChicago
RDU Raleigh-Durham - RFD Chicago Greater Rockford
RDURFD
Raleigh-Durham
Thu 9/24
9:35 pm-8:52 am
1 stop12h 17m
Chicago Greater Rockford
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$118
RaleighSt. Louis
RDU Raleigh-Durham - STL Lambert-St Louis
RDUSTL
Raleigh-Durham
Sat 2/27
5:20 am-10:48 am
1 stop6h 28m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$128
RaleighSt. Louis
RDU Raleigh-Durham - STL Lambert-St Louis
RDUSTL
Raleigh-Durham
Thu 10/29
11:25 am-3:43 pm
1 stop5h 18m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$128
RaleighChicago
RDU Raleigh-Durham - RFD Chicago Greater Rockford
RDURFD
Raleigh-Durham
Wed 10/7
1:56 pm-8:50 am
2 stops19h 54m
Chicago Greater Rockford
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$128
RaleighSt. Louis
RDU Raleigh-Durham - STL Lambert-St Louis
RDUSTL
Raleigh-Durham
Sat 10/3
5:15 am-9:34 am
1 stop5h 19m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$128
RaleighSt. Louis
RDU Raleigh-Durham - STL Lambert-St Louis
RDUSTL
Raleigh-Durham
Tue 3/2
2:30 pm-6:01 pm
1 stop4h 31m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$128
Quickest round-trip
RaleighChicago
RDU Raleigh-Durham - MDW Chicago Midway
RDUMDW
Raleigh-Durham
Mon 10/12
6:55 am-7:55 am
Nonstop2h 00m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
RaleighChicago
RDU Raleigh-Durham - ORD Chicago O'Hare Intl
RDUORD
Raleigh-Durham
Sat 10/31
10:00 am-11:29 am
Nonstop2h 29m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
RaleighChicago
RDU Raleigh-Durham - ORD Chicago O'Hare Intl
RDUORD
Raleigh-Durham
Thu 10/1
8:06 am-9:30 am
Nonstop2h 24m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
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-RFD
RDU-ORD
RDU-MLI
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-RFD
RDU-ORD
What is the cheapest month to book a flight from Raleigh to Illinois?
Currently, December is the cheapest month in which you can book a flight from Raleigh to Illinois (average of $249). 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 September 3, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 21% 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 September 3, 2026.
The most flights from RDU to USIL are scheduled on a Wednesday (32 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 on average).
How much does it cost to fly round-trip from Raleigh to Illinois?
Airfare is typical for this route at the moment.
Raleigh to Illinois flights typically cost between $211 and $369 in September.The cheapest round-trip price found within the last 5 days was $232 on Frontier (Sep 21-Sep 28).
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 29, 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 September 3, 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.
Food
7.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
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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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 September 3, 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 7,457,451 searches. Data last updated September 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$200 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$364 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$160 | Average$327 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$177 | Average$355 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$184 | Average$444 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$207 | Average$352 | FlexibilityNo cancel fee | On-time63% |