$94+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
Aug 23 — Aug 301
Round-trip
1 adult, Economy
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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 July 24, 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 July 24, 2026.
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/225:30 pm
GSP
- STL
1 stop5h 40m
Southwest
Sat 9/2611:15 am
STL
- GSP
1 stop6h 45m
Southwest
Deal found 7/22![Southwest logo]()
$259
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/136:55 pm
GSP
- STL
1 stop4h 10m
Southwest
Wed 8/1912:50 pm
STL
- GSP
2 stops7h 05m
Southwest
Deal found 7/21![Southwest logo]()
$264
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/1510:17 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Tue 8/186:30 am
ORD
- GSP
Nonstop2h 06m
United Airlines
Deal found 7/21![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/136:34 pm
GSP
- ORD
Nonstop2h 30m
American Airlines
Sun 8/168:00 am
ORD
- GSP
Nonstop2h 00m
American Airlines
Deal found 7/20![American Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 9/117:50 pm
GSP
- ORD
2 stops24h 54m
Multiple Airlines
Thu 9/179:26 am
ORD
- GSP
1 stop9h 23m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$273
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/157:05 pm
GSP
- STL
1 stop4h 35m
American Airlines
Sat 8/228:34 am
STL
- GSP
1 stop5h 13m
American Airlines
Deal found 7/19![American Airlines logo]()
$274
This American Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/216:34 pm
GSP
- ORD
Nonstop2h 30m
American Airlines
Mon 8/243:05 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 7/23![American Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/173:52 pm
GSP
- ORD
1 stop9h 03m
Multiple Airlines
Mon 9/217:45 am
ORD
- GSP
1 stop9h 45m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/147:55 pm
GSP
- ORD
2 stops17h 07m
Multiple Airlines
Thu 9/174:49 pm
ORD
- GSP
1 stop25h 11m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 9/147:55 pm
GSP
- ORD
1 stop29h 00m
Multiple Airlines
Fri 9/187:45 am
ORD
- GSP
1 stop9h 45m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$278
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 9/233:01 pm
GSP
- STL
2 stops7h 30m
United Airlines
Thu 9/248:00 am
STL
- GSP
1 stop4h 35m
United Airlines
Deal found 7/21![United Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 9/117:50 pm
GSP
- ORD
2 stops24h 54m
Multiple Airlines
Sun 9/207:45 am
ORD
- GSP
1 stop29h 43m
Multiple Airlines
Deal found 7/21![Multiple 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 July 24, 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 July 24, 2026.
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:34 pm
GSP
- STL
1 stop6h 40m
American Airlines
Mon 8/243:25 pm
STL
- GSP
1 stop6h 25m
American Airlines
Deal found 7/24![American Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/225:30 pm
GSP
- STL
1 stop5h 40m
Southwest
Sat 9/2611:15 am
STL
- GSP
1 stop6h 45m
Southwest
Deal found 7/22![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/1510:17 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Tue 8/186:30 am
ORD
- GSP
Nonstop2h 06m
United Airlines
Deal found 7/21![United Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/116:25 pm
GSP
- STL
1 stop6h 17m
Delta
Mon 9/212:30 pm
STL
- GSP
1 stop6h 20m
Delta
Deal found 7/23![Delta logo]()
$282
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/274:40 pm
GSP
- STL
2 stops6h 25m
Southwest
Sat 8/299:00 am
STL
- GSP
2 stops7h 30m
Southwest
Deal found 7/21![Southwest logo]()
$269
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/176:20 am
GSP
- ORD
Nonstop2h 07m
United Airlines
Mon 9/218:42 am
ORD
- GSP
1 stop4h 38m
United Airlines
Deal found 7/23![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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.
Sun 8/165:46 am
GSP
- ORD
1 stop3h 58m
Delta
Mon 8/245:30 am
ORD
- GSP
1 stop4h 10m
Delta
Deal found 7/20![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 9/1612:00 pm
GSP
- ORD
1 stop5h 37m
Delta
Mon 9/215:30 am
ORD
- GSP
1 stop6h 20m
Delta
Deal found 7/20![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/208:40 am
GSP
- MDW
1 stop6h 25m
Southwest
Sun 8/235:00 am
MDW
- GSP
1 stop4h 10m
Southwest
Deal found 7/21![Southwest logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 10/35:46 pm
GSP
- PIA
1 stop6h 12m
United Airlines
Tue 10/64:05 pm
PIA
- GSP
1 stop4h 12m
United Airlines
Deal found 7/19![United Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 9/257:15 am
GSP
- ORD
1 stop6h 44m
Delta
Sun 9/275:30 am
ORD
- GSP
1 stop4h 38m
Delta
Deal found 7/20![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 10/11:05 pm
GSP
- MDW
1 stop3h 50m
Southwest
Tue 10/134:45 pm
MDW
- GSP
1 stop3h 15m
Southwest
Deal found 7/22![Southwest logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 10/31:36 pm
GSP
- BMI
2 stops11h 27m
American Airlines
Tue 10/65:00 am
BMI
- GSP
1 stop5h 08m
American Airlines
Deal found 7/20![American Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 12/262:25 pm
GSP
- ORD
1 stop5h 07m
Delta
Wed 12/307:10 am
ORD
- GSP
1 stop4h 58m
Delta
Deal found 7/19![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/174:40 pm
GSP
- STL
1 stop6h 00m
Southwest
Mon 8/246:05 am
STL
- GSP
2 stops5h 25m
Southwest
Deal found 7/19![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/188:49 am
GSP
- MDW
1 stop4h 02m
Delta
Tue 8/255:10 pm
MDW
- GSP
1 stop4h 49m
Delta
Deal found 7/19![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 10/286:00 am
GSP
- CMI
2 stops7h 50m
United Airlines
Sat 10/316:30 am
CMI
- GSP
1 stop6h 09m
United Airlines
Deal found 7/19![United Airlines logo]()
$354
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 9/2612:55 pm
GSP
- MDW
1 stop4h 45m
Southwest
Tue 9/296:30 am
MDW
- GSP
2 stops9h 15m
Southwest
Deal found 7/22![Southwest logo]()
$294
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 10/310:51 am
GSP
- CMI
2 stops11h 05m
American Airlines
Tue 10/66:00 am
CMI
- GSP
1 stop4h 08m
American Airlines
Deal found 7/19![American Airlines logo]()
$414
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 10/306:45 am
GSP
- MDW
1 stop4h 07m
Delta
Tue 11/311:35 am
MDW
- GSP
1 stop3h 34m
Delta
Deal found 7/20![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 10/2710:45 am
GSP
- MDW
1 stop3h 40m
Southwest
Sat 10/316:25 am
MDW
- GSP
2 stops8h 00m
Southwest
Deal found 7/23![Southwest logo]()
$294
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/76:34 pm
GSP
- EVV
1 stop6h 25m
American Airlines
Mon 8/101:58 pm
EVV
- GSP
1 stop5h 48m
American Airlines
Deal found 7/19![American Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 10/65:40 am
GSP
- MDW
1 stop5h 12m
Delta
Sat 10/106:00 am
MDW
- GSP
1 stop6h 08m
Delta
Deal found 7/19![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/155:43 pm
GSP
- PIA
1 stop6h 00m
United Airlines
Wed 8/195:45 am
PIA
- GSP
1 stop6h 47m
United Airlines
Deal found 7/20![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 11/68:50 pm
GSP
- MDW
1 stop4h 15m
Southwest
Sat 11/710:20 am
MDW
- GSP
2 stops8h 10m
Southwest
Deal found 7/20![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/210:04 am
GSP
- MDW
1 stop6h 40m
Delta
Wed 9/911:35 am
MDW
- GSP
1 stop5h 11m
Delta
Deal found 7/23![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 10/35:12 pm
GSP
- MLI
2 stops7h 53m
American Airlines
Wed 10/76:00 am
MLI
- GSP
1 stop4h 08m
American Airlines
Deal found 7/19![American Airlines logo]()
$428
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/214:40 pm
GSP
- MDW
2 stops6h 40m
Southwest
Mon 8/248:00 am
MDW
- GSP
1 stop3h 30m
Southwest
Deal found 7/21![Southwest logo]()
$295
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 10/35:46 pm
GSP
- MLI
1 stop5h 52m
United Airlines
Tue 10/66:32 am
MLI
- GSP
2 stops10h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 10/2912:00 pm
GSP
- ORD
1 stop5h 57m
Delta
Sun 11/15:30 am
ORD
- GSP
1 stop6h 38m
Delta
Deal found 7/23![Delta logo]()
$294
Last-minute flights from Greenville to IllinoisDiscover last-minute flight deals from Greenville to Illinois. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from Greenville to Illinois. Data last updated July 24, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/68:18 am
GSP
- STL
1 stop16h 41m
Multiple Airlines
Sun 8/96:34 pm
STL
- GSP
2 stops23h 59m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$291
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/134:40 pm
GSP
- STL
1 stop6h 00m
Southwest
Wed 8/194:45 pm
STL
- GSP
1 stop3h 10m
Southwest
Deal found 7/21![Southwest logo]()
$259
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/136:34 pm
GSP
- ORD
Nonstop2h 30m
American Airlines
Sun 8/168:00 am
ORD
- GSP
Nonstop2h 00m
American Airlines
Deal found 7/20![American Airlines logo]()
$270
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/1510:17 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Tue 8/186:30 am
ORD
- GSP
Nonstop2h 06m
United Airlines
Deal found 7/21![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/157:05 pm
GSP
- STL
1 stop4h 35m
American Airlines
Sat 8/228:34 am
STL
- GSP
1 stop5h 13m
American Airlines
Deal found 7/19![American Airlines logo]()
$274
This Southwest deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/1512:55 pm
GSP
- STL
1 stop8h 45m
Southwest
Sat 8/225:45 am
STL
- GSP
2 stops8h 10m
Southwest
Deal found 7/19![Southwest logo]()
$285
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/155:20 pm
GSP
- ORD
1 stop4h 35m
Delta
Sat 8/228:05 am
ORD
- GSP
1 stop3h 36m
Delta
Deal found 7/20![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/157:15 am
GSP
- MDW
1 stop6h 24m
Delta
Thu 8/2012:46 pm
MDW
- GSP
1 stop6h 46m
Delta
Deal found 7/23![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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.
Mon 8/176:34 pm
GSP
- STL
1 stop6h 40m
American Airlines
Mon 8/243:25 pm
STL
- GSP
1 stop6h 25m
American Airlines
Deal found 7/19![American Airlines logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/217:39 am
GSP
- ORD
Nonstop2h 21m
American Airlines
Wed 8/268:24 pm
ORD
- GSP
Nonstop2h 01m
American Airlines
Deal found 7/23![American Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 8/2511:07 am
GSP
- ORD
2 stops26h 43m
Multiple Airlines
Thu 8/277:44 pm
ORD
- GSP
1 stop19h 16m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/286:55 pm
GSP
- MDW
1 stop4h 25m
Southwest
Mon 8/318:00 am
MDW
- GSP
1 stop3h 30m
Southwest
Deal found 7/21![Southwest logo]()
$284
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 July 24, 2026.
Search for one-way flight options from Greenville to Illinois. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/244:55 pm
GSP
- ORD
1 stop20h 55m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/174:57 pm
GSP
- ORD
1 stop20h 53m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/218:13 pm
GSP
- ORD
2 stops17h 37m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/1811:07 am
GSP
- ORD
2 stops26h 43m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” 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 8/238:37 am
GSP
- ORD
1 stop29h 13m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 8/1111:07 am
GSP
- STL
2 stops22h 50m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$128
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” 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 8/118:15 am
GSP
- STL
1 stop7h 35m
Southwest
Deal found 7/20![Southwest logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/2510:07 pm
GSP
- ORD
1 stop26h 48m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$132
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/207:00 am
GSP
- MDW
1 stop5h 00m
Southwest
Deal found 7/23![Southwest logo]()
$145
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” 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 8/146:55 pm
GSP
- MDW
1 stop4h 25m
Southwest
Deal found 7/22![Southwest logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” 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 8/98:18 am
GSP
- MDW
2 stops38h 45m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/148:32 pm
GSP
- MDW
2 stops22h 14m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$164
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 July 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $259 (Southwest) |
One-way from | $94 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $364 |
Good round-trip deal | $346 or less |
Good one-way deal | $259 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 July 24, 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 - STL
GSPSTL
Greenville
Mon 8/17
6:34 pm-12:14 am
1 stop6h 40m
Lambert-St Louis
Mon 8/24
3:25 pm-10:50 pm
1 stop6h 25m
$259
GreenvilleSt. Louis
GSP - STL
GSPSTL
Greenville
Tue 9/22
5:30 pm-10:10 pm
1 stop5h 40m
Lambert-St Louis
Sat 9/26
11:15 am-7:00 pm
1 stop6h 45m
$259
Quickest round-trip
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Sat 8/15
10:17 am-11:37 am
Nonstop2h 20m
Chicago O'Hare Intl
Tue 8/18
6:30 am-9:36 am
Nonstop2h 06m
$269
GreenvilleSt. Louis
GSP - STL
GSPSTL
Greenville
Thu 8/27
4:40 pm-10:05 pm
2 stops6h 25m
Lambert-St Louis
Sat 8/29
9:00 am-5:30 pm
2 stops7h 30m
$269
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 9/17
6:20 am-7:27 am
Nonstop2h 07m
Chicago O'Hare Intl
Mon 9/21
8:42 am-2:20 pm
1 stop4h 38m
$279
GreenvilleSt. Louis
GSP - STL
GSPSTL
Greenville
Fri 9/11
6:25 pm-11:42 pm
1 stop6h 17m
Lambert-St Louis
Mon 9/21
2:30 pm-9:50 pm
1 stop6h 20m
$282
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Sun 8/16
5:46 am-8:44 am
1 stop3h 58m
Chicago O'Hare Intl
Mon 8/24
5:30 am-10:40 am
1 stop4h 10m
$289
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Wed 9/16
12:00 pm-4:37 pm
1 stop5h 37m
Chicago O'Hare Intl
Mon 9/21
5:30 am-12:50 pm
1 stop6h 20m
$289
GreenvilleChicago
GSP - MDW
GSPMDW
Greenville
Thu 8/20
8:40 am-2:05 pm
1 stop6h 25m
Chicago Midway
Sun 8/23
5:00 am-10:10 am
1 stop4h 10m
$289
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Fri 9/25
7:15 am-12:59 pm
1 stop6h 44m
Chicago O'Hare Intl
Sun 9/27
5:30 am-11:08 am
1 stop4h 38m
$289
Showing 1-10 of 56 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-STL
GSP-ORD
GSP-MDW
GSP-PIA
GSP-BMI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Greenville to Illinois
GSP-USIL
GSP-STL
GSP-ORD
GSP-MDW
GSP-PIA
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 July 24, 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 67% 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 July 24, 2026.
The most flights from GSP to USIL are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 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 $272 and $383 in August.The cheapest round-trip price found within the last 5 days was $269 on United Airlines (Aug 15-Aug 18).
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 87 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 July 18, 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 July 24, 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.
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
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 July 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 July 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$107 | Average$399 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$333 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$203 | Average$334 | FlexibilityNo cancel fee | On-time71% |