$92+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
Jul 24 — Jul 311
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 June 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 June 24, 2026.
This American Airlines deal was found by Cheapflights users on 6/19. 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 7/187:30 pm
GSP
- STL
1 stop5h 28m
American Airlines
Tue 7/215:58 pm
STL
- GSP
1 stop5h 00m
American Airlines
Deal found 6/19![American Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 6/21. 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.
Sat 7/181:55 pm
GSP
- STL
1 stop9h 10m
Southwest
Sat 7/255:10 am
STL
- GSP
1 stop7h 10m
Southwest
Deal found 6/21![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 6/19. 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 7/181:55 pm
GSP
- STL
1 stop9h 10m
Southwest
Tue 7/215:40 am
STL
- GSP
2 stops6h 30m
Southwest
Deal found 6/19![Southwest logo]()
$258
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 9/26:30 am
GSP
- ORD
Nonstop2h 17m
United Airlines
Sun 9/65:59 pm
ORD
- GSP
Nonstop2h 08m
United Airlines
Deal found 6/23![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 6/20. 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.
Tue 8/47:20 pm
GSP
- ORD
Nonstop2h 31m
American Airlines
Tue 8/113:05 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 6/20![American Airlines logo]()
$270
This American Airlines deal was found by Cheapflights users on 6/20. 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.
Wed 7/16:38 pm
GSP
- ORD
Nonstop2h 31m
American Airlines
Fri 7/178:59 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 6/20![American Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Fri 8/144:57 pm
GSP
- ORD
1 stop20h 18m
Multiple Airlines
Sun 8/168:05 am
ORD
- GSP
2 stops10h 34m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/303:19 pm
GSP
- ORD
1 stop21h 56m
Multiple Airlines
Sun 8/28:05 am
ORD
- GSP
1 stop11h 07m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$274
This United Airlines deal was found by Cheapflights users on 6/20. 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.
Thu 7/306:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Sun 8/26:55 am
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 6/20![United Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/68:37 am
GSP
- ORD
1 stop28h 38m
Multiple Airlines
Mon 8/108:05 am
ORD
- GSP
1 stop7h 02m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$278
This American Airlines deal was found by Cheapflights users on 6/24. 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.
Wed 9/210:12 am
GSP
- ORD
1 stop5h 10m
American Airlines
Wed 9/92:56 pm
ORD
- GSP
Nonstop1h 57m
American Airlines
Deal found 6/24![American Airlines logo]()
$279
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 7/16:00 pm
GSP
- ORD
1 stop6h 58m
American Airlines
Tue 7/148:59 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 6/23![American Airlines logo]()
$282
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 June 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 June 24, 2026.
This Southwest deal was found by Cheapflights users on 6/21. 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.
Sat 7/181:55 pm
GSP
- STL
1 stop9h 10m
Southwest
Sat 7/255:10 am
STL
- GSP
1 stop7h 10m
Southwest
Deal found 6/21![Southwest logo]()
$252
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:20 am
GSP
- ORD
Nonstop2h 09m
United Airlines
Sat 10/36:55 am
ORD
- GSP
Nonstop2h 03m
United Airlines
Deal found 6/24![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 6/24. 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.
Thu 10/16:04 pm
GSP
- ORD
1 stop6h 55m
American Airlines
Sat 10/39:40 am
ORD
- GSP
Nonstop2h 01m
American Airlines
Deal found 6/24![American Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 6/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:10 am
GSP
- ORD
1 stop6h 49m
Delta
Sun 9/275:30 am
ORD
- GSP
1 stop4h 33m
Delta
Deal found 6/21![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 6/19. 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 7/181:55 pm
GSP
- STL
1 stop9h 10m
Southwest
Tue 7/215:40 am
STL
- GSP
2 stops6h 30m
Southwest
Deal found 6/19![Southwest logo]()
$258
This United Airlines deal was found by Cheapflights users on 6/20. 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.
Thu 10/157:35 pm
GSP
- ORD
1 stop4h 57m
United Airlines
Sun 10/187:59 pm
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 6/20![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 6/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/142:51 pm
GSP
- ORD
1 stop7h 04m
Delta
Sun 8/165:30 am
ORD
- GSP
1 stop6h 11m
Delta
Deal found 6/22![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 6/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:10 am
GSP
- ORD
1 stop4h 27m
Delta
Mon 9/211:55 pm
ORD
- GSP
1 stop6h 31m
Delta
Deal found 6/22![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 6/23. 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 8/134:40 pm
GSP
- STL
1 stop6h 00m
Southwest
Mon 8/1712:15 pm
STL
- GSP
2 stops8h 20m
Southwest
Deal found 6/23![Southwest logo]()
$294
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 7/156:10 am
GSP
- MLI
1 stop4h 54m
United Airlines
Mon 7/203:47 pm
MLI
- GSP
1 stop4h 39m
United Airlines
Deal found 6/23![United Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 6/20. 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.
Thu 10/155:40 am
GSP
- ORD
1 stop3h 54m
Delta
Sun 10/188:15 am
ORD
- GSP
1 stop3h 53m
Delta
Deal found 6/20![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 6/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:50 pm
GSP
- MDW
1 stop6h 20m
Southwest
Mon 7/202:30 pm
MDW
- GSP
1 stop6h 10m
Southwest
Deal found 6/24![Southwest logo]()
$304
This Delta deal was found by Cheapflights users on 6/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:15 am
GSP
- MDW
1 stop6h 18m
Delta
Sun 11/226:00 am
MDW
- GSP
1 stop3h 58m
Delta
Deal found 6/21![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Tue 8/255:43 pm
GSP
- STL
1 stop5h 17m
United Airlines
Wed 8/269:30 am
STL
- GSP
1 stop6h 32m
United Airlines
Deal found 6/23![United Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 6/20. 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 7/186:00 pm
GSP
- BMI
2 stops7h 35m
American Airlines
Sat 7/255:00 am
BMI
- GSP
2 stops11h 19m
American Airlines
Deal found 6/20![American Airlines logo]()
$398
This Southwest deal was found by Cheapflights users on 6/21. 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 9/244:40 pm
GSP
- MDW
1 stop5h 20m
Southwest
Sat 9/267:55 am
MDW
- GSP
2 stops8h 35m
Southwest
Deal found 6/21![Southwest logo]()
$309
This Delta deal was found by Cheapflights users on 6/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:10 am
GSP
- MDW
1 stop6h 29m
Delta
Sat 9/266:05 am
MDW
- GSP
1 stop5h 45m
Delta
Deal found 6/21![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 6/20. 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 9/104:49 pm
GSP
- MLI
2 stops8h 16m
American Airlines
Sun 9/276:00 am
MLI
- GSP
1 stop5h 41m
American Airlines
Deal found 6/20![American Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Sun 7/126:17 pm
ORD
- GSP
Nonstop2h 09m
United Airlines
Deal found 6/24![United Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 6/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:40 pm
GSP
- MDW
2 stops6h 40m
Southwest
Sun 8/305:00 am
MDW
- GSP
1 stop4h 10m
Southwest
Deal found 6/24![Southwest logo]()
$309
This Delta deal was found by Cheapflights users on 6/20. 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 9/25:20 pm
GSP
- MDW
1 stop6h 16m
Delta
Wed 9/96:05 am
MDW
- GSP
1 stop3h 58m
Delta
Deal found 6/20![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 6/23. 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 7/148:25 am
GSP
- MDW
2 stops6h 40m
Southwest
Tue 7/145:20 pm
MDW
- GSP
1 stop3h 45m
Southwest
Deal found 6/23![Southwest logo]()
$309
This Delta deal was found by Cheapflights users on 6/20. 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.
Thu 9/106:25 pm
GSP
- MLI
1 stop5h 05m
Delta
Sun 9/275:16 pm
MLI
- GSP
1 stop4h 44m
Delta
Deal found 6/20![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 6/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:50 pm
GSP
- MDW
2 stops6h 00m
Southwest
Thu 11/196:05 am
MDW
- GSP
2 stops7h 05m
Southwest
Deal found 6/24![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Tue 7/286:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Thu 7/306:55 am
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 6/23![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 6/20. 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 7/188:45 am
GSP
- BMI
1 stop3h 38m
Delta
Sat 7/254:18 pm
BMI
- GSP
1 stop6h 36m
Delta
Deal found 6/20![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 6/21. 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 7/106:50 pm
GSP
- MDW
1 stop4h 10m
Southwest
Tue 7/1411:50 am
MDW
- GSP
2 stops7h 30m
Southwest
Deal found 6/21![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 6/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:30 am
GSP
- PIA
1 stop4h 36m
United Airlines
Sat 8/298:29 am
PIA
- GSP
1 stop4h 03m
United Airlines
Deal found 6/22![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 6/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:45 am
GSP
- BMI
1 stop5h 38m
Delta
Mon 7/274:18 pm
BMI
- GSP
1 stop4h 13m
Delta
Deal found 6/24![Delta logo]()
$309
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 7/811:15 am
GSP
- CMI
2 stops10h 47m
American Airlines
Sun 7/126:04 am
CMI
- GSP
1 stop3h 57m
American Airlines
Deal found 6/23![American Airlines logo]()
$555
Last-minute flights from Greenville to IllinoisDiscover last-minute flight deals from Greenville to Illinois. Data last updated June 24, 2026 and is based on user searches.
Discover last-minute flight deals from Greenville to Illinois. Data last updated June 24, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/20. 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.
Wed 7/16:38 pm
GSP
- ORD
Nonstop2h 31m
American Airlines
Sat 7/119:00 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 6/20![American Airlines logo]()
$272
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 7/16:00 pm
GSP
- ORD
1 stop6h 58m
American Airlines
Tue 7/148:59 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 6/23![American Airlines logo]()
$282
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Tue 7/146:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Tue 7/146:17 pm
ORD
- GSP
Nonstop2h 09m
United Airlines
Deal found 6/23![United Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 6/20. 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.
Tue 7/141:09 pm
GSP
- ORD
1 stop6h 36m
Delta
Wed 7/158:03 am
ORD
- GSP
1 stop4h 58m
Delta
Deal found 6/20![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 6/23. 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 7/148:25 am
GSP
- MDW
1 stop6h 35m
Southwest
Tue 7/143:10 pm
MDW
- GSP
1 stop5h 55m
Southwest
Deal found 6/23![Southwest logo]()
$289
This American Airlines deal was found by Cheapflights users on 6/19. 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 7/187:30 pm
GSP
- STL
1 stop5h 28m
American Airlines
Tue 7/215:58 pm
STL
- GSP
1 stop5h 00m
American Airlines
Deal found 6/19![American Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 6/21. 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.
Sat 7/181:55 pm
GSP
- STL
1 stop9h 10m
Southwest
Sat 7/255:10 am
STL
- GSP
1 stop7h 10m
Southwest
Deal found 6/21![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 6/19. 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 7/181:55 pm
GSP
- STL
1 stop9h 10m
Southwest
Tue 7/215:40 am
STL
- GSP
2 stops6h 30m
Southwest
Deal found 6/19![Southwest logo]()
$258
This Southwest deal was found by Cheapflights users on 6/21. 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.
Wed 7/227:40 pm
GSP
- MDW
1 stop4h 35m
Southwest
Sat 7/255:00 am
MDW
- GSP
1 stop7h 20m
Southwest
Deal found 6/21![Southwest logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/303:19 pm
GSP
- ORD
1 stop21h 56m
Multiple Airlines
Sun 8/28:05 am
ORD
- GSP
1 stop11h 07m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$274
This United Airlines deal was found by Cheapflights users on 6/20. 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.
Thu 7/306:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Sun 8/26:55 am
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 6/20![United Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Fri 7/317:40 pm
GSP
- ORD
1 stop4h 51m
United Airlines
Mon 8/36:55 am
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 6/23![United Airlines logo]()
$279
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 June 24, 2026.
Search for one-way flight options from Greenville to Illinois. Find affordable one-way fares based on user searches. Data last updated June 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 8/174:57 pm
GSP
- ORD
1 stop21h 03m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Fri 8/144:57 pm
GSP
- ORD
1 stop20h 18m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 8/104:57 pm
GSP
- ORD
1 stop20h 18m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 7/2012:06 pm
GSP
- ORD
1 stop25h 09m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 8/38:13 pm
GSP
- ORD
2 stops17h 02m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 7/318:13 pm
GSP
- ORD
2 stops17h 02m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 8/248:13 pm
GSP
- ORD
2 stops17h 47m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/303:19 pm
GSP
- ORD
1 stop21h 56m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$123
This United Airlines deal was found by Cheapflights users on 6/21. 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 7/187:08 pm
GSP
- STL
1 stop5h 36m
United Airlines
Deal found 6/21![United Airlines logo]()
$124
This Southwest deal was found by Cheapflights users on 6/20. 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 7/141:50 pm
GSP
- MDW
1 stop5h 05m
Southwest
Deal found 6/20![Southwest logo]()
$145
This Southwest deal was found by Cheapflights users on 6/22. 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 6/307:50 pm
GSP
- MDW
1 stop4h 20m
Southwest
Deal found 6/22![Southwest logo]()
$148
This Southwest deal was found by Cheapflights users on 6/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/88:40 am
GSP
- MDW
2 stops9h 20m
Southwest
Deal found 6/24![Southwest logo]()
$150
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 June 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $247 (American Airlines) |
One-way from | $92 (Kiwi.com) |
Popular in | March |
Cheapest in | February |
Average price | $359 |
Good round-trip deal | $330 or less |
Good one-way deal | $268 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 June 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
Sat 7/18
1:55 pm-10:05 pm
1 stop9h 10m
Lambert-St Louis
Sat 7/25
5:10 am-1:20 pm
1 stop7h 10m
$252
GreenvilleSt. Louis
GSP - STL
GSPSTL
Greenville
Sat 7/18
1:55 pm-10:05 pm
1 stop9h 10m
Lambert-St Louis
Tue 7/21
5:40 am-1:10 pm
2 stops6h 30m
$258
Quickest round-trip
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 10/1
6:20 am-7:29 am
Nonstop2h 09m
Chicago O'Hare Intl
Sat 10/3
6:55 am-9:58 am
Nonstop2h 03m
$269
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 10/1
6:04 pm-11:59 pm
1 stop6h 55m
Chicago O'Hare Intl
Sat 10/3
9:40 am-12:41 pm
Nonstop2h 01m
$279
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 10/15
7:35 pm-11:32 pm
1 stop4h 57m
Chicago O'Hare Intl
Sun 10/18
7:59 pm-10:59 pm
Nonstop2h 00m
$279
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 9/24
7:10 am-12:59 pm
1 stop6h 49m
Chicago O'Hare Intl
Sun 9/27
5:30 am-11:03 am
1 stop4h 33m
$289
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Fri 8/14
2:51 pm-8:55 pm
1 stop7h 04m
Chicago O'Hare Intl
Sun 8/16
5:30 am-12:41 pm
1 stop6h 11m
$289
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 9/17
7:10 am-10:37 am
1 stop4h 27m
Chicago O'Hare Intl
Mon 9/21
1:55 pm-9:26 pm
1 stop6h 31m
$289
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 10/15
5:40 am-8:34 am
1 stop3h 54m
Chicago O'Hare Intl
Sun 10/18
8:15 am-1:08 pm
1 stop3h 53m
$289
GreenvilleChicago
GSP - MDW
GSPMDW
Greenville
Fri 11/20
7:15 am-12:33 pm
1 stop6h 18m
Chicago Midway
Sun 11/22
6:00 am-10:58 am
1 stop3h 58m
$289
Showing 1-10 of 60 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-EVV
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-STL
GSP-ORD
GSP-MDW
GSP-EVV
What is the cheapest month to book a flight from Greenville to Illinois?
Currently, November is the cheapest month in which you can book a flight from Greenville to Illinois (average of $81). Flying from Greenville to Illinois in January is currently the most expensive (average of $195). 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 June 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 June 24, 2026.
The most flights from GSP to USIL are scheduled on a Monday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).
How much does it cost to fly round-trip from Greenville to Illinois?
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 88 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 June 20, 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 June 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
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
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 June 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 June 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$107 | Average$226 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$328 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$202 | Average$353 | FlexibilityNo cancel fee | On-time71% |