$93+ Cheap flights from Greenville (GSP) 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
Sep 17 — Sep 241
Round-trip
1 adult, Economy
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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 Greenville to IllinoisExplore the most affordable flight options available from Greenville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.
Explore the most affordable flight options available from Greenville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.
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.
Sat 10/102:30 pm -
1 stop9h 43m
Mon 10/126:35 pm -
2 stops21h 39m
Deal found 8/17![Multiple Airlines logo]()
$248
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.
Tue 9/226:10 pm -
1 stop4h 50m
Wed 9/237:00 am -
1 stop7h 03m
Deal found 8/14![United Airlines logo]()
$254
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 10/18:40 pm -
1 stop3h 55m
Mon 10/55:50 pm -
1 stop3h 55m
Deal found 8/13![Southwest logo]()
$255
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 9/104:40 pm -
1 stop6h 05m
Wed 9/161:40 pm -
1 stop4h 50m
Deal found 8/16![Southwest logo]()
$259
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.
Mon 9/286:55 pm -
1 stop4h 30m
Fri 10/26:30 pm -
1 stop3h 15m
Deal found 8/13![Southwest logo]()
$269
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 10/212:11 pm -
1 stop28h 09m
Wed 10/77:11 am -
1 stop30h 03m
Deal found 8/15![Multiple Airlines logo]()
$272
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 10/12:38 pm -
2 stops11h 07m
Thu 10/88:04 am -
1 stop23h 07m
Deal found 8/16![Multiple Airlines logo]()
$275
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.
Sat 8/293:30 pm -
1 stop4h 50m
Sat 9/511:45 am -
2 stops6h 15m
Deal found 8/13![Southwest logo]()
$275
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.
Tue 9/1512:29 pm -
1 stop27h 51m
Fri 9/187:11 am -
1 stop10h 19m
Deal found 8/16![Multiple Airlines logo]()
$276
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.
Fri 9/185:24 pm -
1 stop7h 19m
Sat 9/267:00 am -
1 stop5h 41m
Deal found 8/17![American Airlines logo]()
$279
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.
Fri 11/66:38 pm -
Nonstop2h 35m
Sun 11/86:54 pm -
Nonstop2h 04m
Deal found 8/13![American Airlines logo]()
$279
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.
Tue 9/2911:33 am -
Nonstop2h 12m
Thu 10/18:00 am -
Nonstop2h 03m
Deal found 8/16![American Airlines logo]()
$281
Best flights from Greenville to IllinoisDiscover carefully curated flight deals from Greenville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2026.
Discover carefully curated flight deals from Greenville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2026.
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 10/18:40 pm -
1 stop3h 55m
Mon 10/55:50 pm -
1 stop3h 55m
Deal found 8/13![Southwest logo]()
$255
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.
Fri 9/255:46 pm -
Nonstop2h 19m
Sun 9/276:55 am -
Nonstop2h 03m
Deal found 8/17![United Airlines logo]()
$279
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.
Wed 9/3011:04 am -
1 stop6h 09m
Sat 10/37:05 am -
1 stop3h 54m
Deal found 8/15![Delta logo]()
$299
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.
Sat 10/106:43 pm -
1 stop6h 16m
Tue 10/135:00 am -
1 stop5h 08m
Deal found 8/13![American Airlines logo]()
$319
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 9/104:40 pm -
1 stop6h 05m
Wed 9/161:40 pm -
1 stop4h 50m
Deal found 8/16![Southwest logo]()
$259
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.
Thu 10/17:35 pm -
1 stop4h 57m
Sun 10/48:05 pm -
Nonstop2h 00m
Deal found 8/16![United Airlines logo]()
$289
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.
Wed 9/97:15 am -
1 stop6h 44m
Tue 9/155:30 am -
1 stop6h 20m
Deal found 8/14![Delta logo]()
$299
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.
Sat 8/293:30 pm -
1 stop4h 50m
Sat 9/511:45 am -
2 stops6h 15m
Deal found 8/13![Southwest logo]()
$275
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.
Thu 10/226:20 am -
Nonstop2h 09m
Sat 10/2412:55 pm -
1 stop5h 05m
Deal found 8/14![United Airlines logo]()
$289
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.
Thu 10/297:15 am -
1 stop6h 55m
Sun 11/18:05 am -
1 stop3h 34m
Deal found 8/17![Delta logo]()
$299
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 9/16:00 am -
2 stops8h 07m
Sat 9/55:00 am -
1 stop5h 00m
Deal found 8/17![American Airlines logo]()
$354
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.
Thu 11/512:54 pm -
1 stop6h 06m
Sun 11/86:04 am -
1 stop3h 56m
Deal found 8/17![Delta logo]()
$299
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.
Wed 9/167:00 am -
1 stop4h 50m
Wed 9/1612:45 pm -
1 stop5h 45m
Deal found 8/17![Southwest logo]()
$299
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.
Wed 9/307:00 am -
1 stop3h 49m
Sat 10/36:05 am -
1 stop5h 45m
Deal found 8/15![Delta logo]()
$299
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.
Fri 9/44:40 pm -
1 stop5h 20m
Sun 9/68:55 am -
1 stop3h 45m
Deal found 8/14![Southwest logo]()
$299
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.
Fri 8/282:18 pm -
1 stop5h 45m
Tue 9/110:41 am -
1 stop5h 21m
Deal found 8/13![United Airlines logo]()
$349
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 11/67:15 am -
1 stop6h 32m
Sun 11/86:04 am -
1 stop3h 56m
Deal found 8/15![Delta logo]()
$299
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.
Fri 10/25:24 pm -
1 stop4h 45m
Sun 10/46:00 am -
1 stop4h 03m
Deal found 8/13![American Airlines logo]()
$404
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.
Wed 9/25:30 pm -
1 stop5h 40m
Fri 9/412:55 pm -
2 stops7h 40m
Deal found 8/13![Southwest logo]()
$307
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 9/1610:33 am -
Nonstop2h 20m
Mon 9/216:15 pm -
Nonstop2h 03m
Deal found 8/14![United Airlines logo]()
$359
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.
Tue 10/67:00 am -
1 stop4h 03m
Sat 10/106:04 am -
1 stop5h 35m
Deal found 8/14![Delta logo]()
$299
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:12 am -
1 stop7h 01m
Tue 9/84:24 pm -
1 stop4h 26m
Deal found 8/15![American Airlines logo]()
$404
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.
Fri 10/98:40 pm -
1 stop3h 55m
Mon 10/125:50 pm -
1 stop3h 55m
Deal found 8/17![Southwest logo]()
$308
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 9/47:47 pm -
1 stop4h 53m
Mon 9/76:30 am -
Nonstop2h 06m
Deal found 8/16![United Airlines logo]()
$359
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.
Thu 10/297:00 am -
1 stop4h 03m
Sun 11/16:04 am -
1 stop5h 35m
Deal found 8/15![Delta logo]()
$299
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.
Thu 9/106:12 am -
2 stops7h 37m
Tue 9/155:02 am -
2 stops10h 17m
Deal found 8/14![American Airlines logo]()
$409
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.
Tue 9/221:20 pm -
2 stops6h 40m
Wed 9/238:00 am -
2 stops7h 45m
Deal found 8/14![Southwest logo]()
$309
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 12/37:14 pm -
1 stop4h 42m
Tue 12/81:00 pm -
1 stop4h 09m
Deal found 8/14![Delta logo]()
$299
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 1/96:00 am -
2 stops12h 51m
Wed 1/139:42 am -
1 stop6h 18m
Deal found 8/16![United Airlines logo]()
$374
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.
Sat 10/36:11 am -
2 stops7h 41m
Tue 10/612:38 pm -
1 stop4h 30m
Deal found 8/16![American Airlines logo]()
$424
Last-minute flights from Greenville to IllinoisDiscover last-minute flight deals from Greenville to Illinois. Data last updated August 18, 2026 and is based on user searches.
Discover last-minute flight deals from Greenville to Illinois. Data last updated August 18, 2026 and is based on user searches.
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.
Sat 8/293:30 pm -
1 stop4h 50m
Sat 9/511:45 am -
2 stops6h 15m
Deal found 8/13![Southwest logo]()
$275
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.
Sat 8/293:30 pm -
1 stop4h 50m
Tue 9/12:40 pm -
1 stop5h 15m
Deal found 8/13![Southwest logo]()
$281
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.
Sat 9/510:17 am -
Nonstop2h 20m
Sun 9/610:25 am -
Nonstop2h 07m
Deal found 8/17![United Airlines logo]()
$285
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.
Wed 9/98:24 pm -
2 stops19h 21m
Mon 9/147:11 am -
1 stop10h 19m
Deal found 8/14![Multiple Airlines logo]()
$284
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 9/104:40 pm -
1 stop6h 05m
Wed 9/161:40 pm -
1 stop4h 50m
Deal found 8/16![Southwest logo]()
$259
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.
Tue 9/1512:29 pm -
1 stop27h 51m
Fri 9/187:11 am -
1 stop10h 19m
Deal found 8/16![Multiple Airlines logo]()
$276
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.
Fri 9/185:24 pm -
1 stop7h 19m
Sat 9/267:00 am -
1 stop5h 41m
Deal found 8/17![American Airlines logo]()
$279
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.
Fri 9/186:55 pm -
1 stop4h 15m
Sat 9/266:50 am -
2 stops7h 05m
Deal found 8/17![Southwest logo]()
$284
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.
Tue 9/226:10 pm -
1 stop4h 50m
Wed 9/237:00 am -
1 stop7h 03m
Deal found 8/14![United Airlines logo]()
$254
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.
Fri 9/255:46 pm -
Nonstop2h 19m
Sun 9/276:55 am -
Nonstop2h 03m
Deal found 8/17![United Airlines logo]()
$279
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.
Mon 9/286:55 pm -
1 stop4h 30m
Fri 10/26:30 pm -
1 stop3h 15m
Deal found 8/13![Southwest logo]()
$269
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.
Tue 9/2911:33 am -
Nonstop2h 12m
Thu 10/18:00 am -
Nonstop2h 03m
Deal found 8/16![American Airlines logo]()
$281
One-way flights from Greenville to IllinoisSearch for one-way flight options from Greenville to Illinois. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
Search for one-way flight options from Greenville to Illinois. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
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 9/182:18 pm -
1 stop26h 02m
Deal found 8/15![Multiple Airlines logo]()
$93
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.
Mon 10/193:20 pm -
1 stop25h 16m
Deal found 8/17![Multiple Airlines logo]()
$97
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.
Mon 9/1412:11 pm -
1 stop28h 09m
Deal found 8/17![Multiple Airlines logo]()
$100
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.
Tue 10/67:00 am -
1 stop4h 55m
Deal found 8/13![Southwest logo]()
$100
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.
Mon 10/1212:11 pm -
1 stop28h 25m
Deal found 8/15![Multiple Airlines logo]()
$101
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 10/612:29 pm -
1 stop27h 51m
Deal found 8/13![Multiple Airlines logo]()
$102
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 9/112:18 pm -
1 stop26h 02m
Deal found 8/13![Multiple Airlines logo]()
$103
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 9/168:24 pm -
2 stops19h 21m
Deal found 8/13![Multiple Airlines logo]()
$112
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.
Tue 10/61:25 pm -
1 stop6h 55m
Deal found 8/13![Southwest logo]()
$128
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.
Tue 9/295:46 pm -
1 stop4h 35m
Deal found 8/14![United Airlines 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.
Tue 10/611:28 am -
2 stops26h 42m
Deal found 8/13![Multiple Airlines logo]()
$132
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 9/2912:29 pm -
2 stops25h 41m
Deal found 8/14![Multiple Airlines logo]()
$133
Find flight deals from Greenville to Illinois
Keep the following information in mind while searching for Greenville to Illinois flight deals. Data was last updated August 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $248 (Kiwi.com) |
One-way from | $93 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $333 |
Good round-trip deal | $339 or less |
Good one-way deal | $267 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Greenville 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 18, 2026.
Use the filters below to find and compare flights from Greenville to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
GreenvilleSt. Louis
GSP Greenville - STL Lambert-St Louis
GSPSTL
Greenville
Thu 10/1
8:40 pm-11:35 pm
1 stop3h 55m
Lambert-St Louis
Mon 10/5
5:50 pm-10:45 pm
1 stop3h 55m
$255
GreenvilleSt. Louis
GSP Greenville - STL Lambert-St Louis
GSPSTL
Greenville
Thu 9/10
4:40 pm-9:45 pm
1 stop6h 05m
Lambert-St Louis
Wed 9/16
1:40 pm-7:30 pm
1 stop4h 50m
$259
GreenvilleChicago
GSP Greenville - MDW Chicago Midway
GSPMDW
Greenville
Sat 8/29
3:30 pm-7:20 pm
1 stop4h 50m
Chicago Midway
Sat 9/5
11:45 am-7:00 pm
2 stops6h 15m
$275
Quickest round-trip
GreenvilleChicago
GSP Greenville - ORD Chicago O'Hare Intl
GSPORD
Greenville
Fri 9/25
5:46 pm-7:05 pm
Nonstop2h 19m
Chicago O'Hare Intl
Sun 9/27
6:55 am-9:58 am
Nonstop2h 03m
$279
GreenvilleChicago
GSP Greenville - ORD Chicago O'Hare Intl
GSPORD
Greenville
Thu 10/1
7:35 pm-11:32 pm
1 stop4h 57m
Chicago O'Hare Intl
Sun 10/4
8:05 pm-11:05 pm
Nonstop2h 00m
$289
GreenvilleChicago
GSP Greenville - ORD Chicago O'Hare Intl
GSPORD
Greenville
Thu 10/22
6:20 am-7:29 am
Nonstop2h 09m
Chicago O'Hare Intl
Sat 10/24
12:55 pm-7:00 pm
1 stop5h 05m
$289
GreenvilleChicago
GSP Greenville - ORD Chicago O'Hare Intl
GSPORD
Greenville
Wed 9/30
11:04 am-4:13 pm
1 stop6h 09m
Chicago O'Hare Intl
Sat 10/3
7:05 am-11:59 am
1 stop3h 54m
$299
GreenvilleChicago
GSP Greenville - ORD Chicago O'Hare Intl
GSPORD
Greenville
Wed 9/9
7:15 am-12:59 pm
1 stop6h 44m
Chicago O'Hare Intl
Tue 9/15
5:30 am-12:50 pm
1 stop6h 20m
$299
GreenvilleChicago
GSP Greenville - ORD Chicago O'Hare Intl
GSPORD
Greenville
Thu 10/29
7:15 am-1:10 pm
1 stop6h 55m
Chicago O'Hare Intl
Sun 11/1
8:05 am-12:39 pm
1 stop3h 34m
$299
GreenvilleChicago
GSP Greenville - MDW Chicago Midway
GSPMDW
Greenville
Thu 11/5
12:54 pm-6:00 pm
1 stop6h 06m
Chicago Midway
Sun 11/8
6:04 am-11:00 am
1 stop3h 56m
$299
Showing 1-10 of 59 resultsSorted by cheapest first
Best time to book a flight from Greenville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Greenville with our price prediction graph.
GSP-ORD
GSP-MDW
GSP-STL
GSP-BMI
GSP-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 Greenville to Illinois
GSP-USIL
GSP-ORD
GSP-MDW
GSP-STL
GSP-BMI
What is the cheapest month to book a flight from Greenville to Illinois?
Currently, February is the cheapest month in which you can book a flight from Greenville to Illinois (average of $282). Flying from Greenville to Illinois in June is currently the most expensive (average of $368). 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 GSP to IL?
Find hourly flight availability from Greenville 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 18, 2026.
One of the essential ways to save on airfare from Greenville to Illinois is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 63% on airfare.
Weekly flight availability from Greenville to Illinois
Explore weekly flight availability from Greenville 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 18, 2026.
The most flights from GSP to USIL are scheduled on a Monday (26 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (15 on average).
How much does it cost to fly round-trip from Greenville to Illinois?
Airfare is below average for this route at the moment.
Greenville to Illinois flights typically cost between $279 and $444 in October.The cheapest round-trip price found within the last 5 days was $272 on Multiple Airlines (Oct 2-Oct 7).
How far ahead should I book a flight from Greenville to Illinois?
To ensure you get the cheapest price possible for a flight from Greenville to Illinois, you should look to book at least 86 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 Greenville to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Greenville to Illinois. Price data was last updated on August 15, 2026.
Travelers seeking maximum savings on their Greenville to Illinois flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday at noon 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 18, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Greenville to Illinois to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Greenville 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 Greenville to Illinois
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Complete your trip
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Greenville and Illinois flights
Browse other Greenville and Illinois flight options. Last updated on August 18, 2026.
Popular flight searches
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Greenville to Illinois flights
Consider these flights traveling from Greenville to Illinois.
Top 3 airlines flying from Greenville to Illinois
Discover the top 3 airlines that operate flights from Greenville 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 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$156 | Average$399 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$336 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$209 | Average$336 | FlexibilityNo cancel fee | On-time71% |