$109+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
Jul 10 — Jul 171
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 10, 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 10, 2026.
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/87:40 pm
GSP
- STL
1 stop4h 25m
Southwest
Tue 7/141:20 pm
STL
- GSP
1 stop6h 00m
Southwest
Deal found 6/8![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/36:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Sun 7/56:55 am
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 6/9![United Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/238:25 am
GSP
- EVV
1 stop12h 01m
Allegiant Air
Sun 7/268:13 am
EVV
- GSP
1 stop5h 48m
Allegiant Air
Deal found 6/8![Allegiant Air logo]()
$270
This American Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/36:43 pm
GSP
- ORD
Nonstop2h 31m
American Airlines
Mon 7/68:59 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 6/5![American Airlines logo]()
$270
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/71:05 pm
GSP
- MDW
2 stops7h 25m
Southwest
Mon 8/105:55 am
MDW
- GSP
1 stop5h 35m
Southwest
Deal found 6/8![Southwest logo]()
$270
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/236:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Tue 8/41:55 pm
ORD
- GSP
Nonstop2h 05m
United Airlines
Deal found 6/9![United Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/125:30 pm
GSP
- STL
1 stop5h 40m
Southwest
Sat 8/157:50 am
STL
- GSP
1 stop6h 05m
Southwest
Deal found 6/8![Southwest logo]()
$274
This American Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 9/27:39 am
GSP
- ORD
Nonstop2h 21m
American Airlines
Tue 9/83:05 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 6/8![American Airlines logo]()
$275
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/276:55 pm
GSP
- MDW
1 stop4h 25m
Southwest
Sun 8/305:00 am
MDW
- GSP
1 stop4h 10m
Southwest
Deal found 6/8![Southwest logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/78:13 pm
GSP
- ORD
2 stops17h 02m
Multiple Airlines
Mon 8/108:05 am
ORD
- GSP
1 stop7h 02m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$276
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/46:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Mon 7/66:17 pm
ORD
- GSP
Nonstop2h 09m
United Airlines
Deal found 6/8![United Airlines logo]()
$277
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/106:18 pm
GSP
- ORD
1 stop4h 42m
American Airlines
Sun 7/268:59 pm
ORD
- GSP
Nonstop1h 59m
American Airlines
Deal found 6/9![American Airlines logo]()
$279
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 10, 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 10, 2026.
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/85:43 pm
GSP
- ORD
Nonstop2h 17m
United Airlines
Wed 7/156:17 pm
ORD
- GSP
Nonstop2h 09m
United Airlines
Deal found 6/9![United Airlines logo]()
$269
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/87:40 pm
GSP
- STL
1 stop4h 25m
Southwest
Tue 7/145:40 am
STL
- GSP
2 stops6h 30m
Southwest
Deal found 6/9![Southwest logo]()
$272
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/17:10 am
GSP
- MDW
1 stop6h 36m
Delta
Wed 7/86:00 am
MDW
- GSP
1 stop3h 57m
Delta
Deal found 6/10![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:24 am
GSP
- BMI
1 stop6h 25m
American Airlines
Tue 9/295:02 am
BMI
- GSP
1 stop5h 01m
American Airlines
Deal found 6/7![American Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/66:19 pm
GSP
- PIA
2 stops40h 40m
Multiple Airlines
Sun 7/129:28 am
PIA
- GSP
1 stop27h 57m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 6/228:29 am
GSP
- EVV
1 stop12h 21m
Allegiant Air
Thu 6/258:07 pm
EVV
- GSP
1 stop10h 27m
Allegiant Air
Deal found 6/5![Allegiant Air logo]()
$438
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/46:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Mon 7/66:17 pm
ORD
- GSP
Nonstop2h 09m
United Airlines
Deal found 6/9![United Airlines logo]()
$269
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/125:30 pm
GSP
- STL
1 stop5h 40m
Southwest
Sat 8/156:50 am
STL
- GSP
2 stops7h 05m
Southwest
Deal found 6/8![Southwest logo]()
$279
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 10/307:15 am
GSP
- MDW
1 stop6h 18m
Delta
Mon 11/210:35 am
MDW
- GSP
1 stop4h 34m
Delta
Deal found 6/9![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/66:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Sun 8/96:55 am
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 6/9![United Airlines logo]()
$269
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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
- MDW
2 stops6h 40m
Southwest
Sun 8/305:00 am
MDW
- GSP
1 stop4h 10m
Southwest
Deal found 6/8![Southwest logo]()
$281
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 stop3h 58m
Delta
Deal found 6/8![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/16:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Mon 7/66:17 pm
ORD
- GSP
Nonstop2h 09m
United Airlines
Deal found 6/8![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/171:05 pm
GSP
- MDW
2 stops7h 25m
Southwest
Fri 8/2110:25 am
MDW
- GSP
2 stops6h 55m
Southwest
Deal found 6/8![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/285:20 pm
GSP
- ORD
1 stop4h 35m
Delta
Sat 8/296:40 am
ORD
- GSP
1 stop5h 01m
Delta
Deal found 6/9![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 6/275:43 pm
GSP
- ORD
Nonstop2h 17m
United Airlines
Sat 7/41:55 pm
ORD
- GSP
Nonstop2h 05m
United Airlines
Deal found 6/6![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/1112:46 pm
GSP
- MDW
1 stop6h 21m
Delta
Wed 7/156:00 am
MDW
- GSP
1 stop5h 14m
Delta
Deal found 6/6![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/75:43 pm
GSP
- ORD
Nonstop2h 17m
United Airlines
Sat 7/116:17 pm
ORD
- GSP
Nonstop2h 09m
United Airlines
Deal found 6/8![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/36:50 pm
GSP
- STL
1 stop4h 55m
Southwest
Sat 7/115:10 am
STL
- GSP
1 stop7h 10m
Southwest
Deal found 6/9![Southwest logo]()
$319
This Delta deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 10/27:10 am
GSP
- MDW
1 stop6h 24m
Delta
Mon 10/55:10 pm
MDW
- GSP
1 stop4h 50m
Delta
Deal found 6/5![Delta logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/68:20 am
GSP
- PIA
1 stop11h 32m
Allegiant Air
Sun 7/129:28 am
PIA
- GSP
1 stop27h 57m
Allegiant Air
Deal found 6/5![Allegiant Air logo]()
$449
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/77:40 pm
GSP
- ORD
1 stop4h 51m
United Airlines
Mon 7/136:55 am
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 6/8![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/67:15 am
GSP
- MDW
1 stop6h 24m
Delta
Sun 8/96:05 am
MDW
- GSP
1 stop5h 36m
Delta
Deal found 6/8![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/155:43 pm
GSP
- ORD
Nonstop2h 17m
United Airlines
Tue 7/218:40 am
ORD
- GSP
1 stop4h 40m
United Airlines
Deal found 6/7![United Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/412:30 pm
GSP
- STL
1 stop4h 35m
Southwest
Fri 7/105:35 pm
STL
- GSP
1 stop4h 20m
Southwest
Deal found 6/5![Southwest logo]()
$346
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 8/145:20 pm
GSP
- MDW
1 stop6h 16m
Delta
Sun 8/166:05 am
MDW
- GSP
1 stop5h 36m
Delta
Deal found 6/7![Delta logo]()
$299
This American Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/47:30 am
GSP
- CMI
1 stop4h 37m
American Airlines
Mon 7/136:28 pm
CMI
- GSP
1 stop4h 30m
American Airlines
Deal found 6/7![American Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 9/117:30 pm
GSP
- ORD
1 stop5h 10m
United Airlines
Wed 9/168:45 am
ORD
- GSP
1 stop4h 35m
United Airlines
Deal found 6/9![United Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/31:55 pm
GSP
- STL
2 stops7h 55m
Southwest
Thu 7/99:45 am
STL
- GSP
2 stops7h 30m
Southwest
Deal found 6/7![Southwest logo]()
$364
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/176:18 pm
GSP
- BMI
2 stops7h 17m
American Airlines
Sun 7/196:00 pm
BMI
- GSP
1 stop4h 58m
American Airlines
Deal found 6/9![American Airlines logo]()
$564
Last-minute flights from Greenville to IllinoisDiscover last-minute flight deals from Greenville to Illinois. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from Greenville to Illinois. Data last updated June 10, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/17:50 pm
GSP
- MDW
1 stop4h 20m
Southwest
Sat 7/113:30 pm
MDW
- GSP
1 stop3h 30m
Southwest
Deal found 6/9![Southwest logo]()
$289
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/18:25 am
GSP
- MDW
2 stops6h 40m
Southwest
Sun 7/56:10 am
MDW
- GSP
1 stop5h 00m
Southwest
Deal found 6/9![Southwest logo]()
$314
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/87:40 pm
GSP
- STL
1 stop4h 25m
Southwest
Tue 7/141:20 pm
STL
- GSP
1 stop6h 00m
Southwest
Deal found 6/8![Southwest logo]()
$267
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/87:20 pm
GSP
- PIA
1 stop6h 02m
American Airlines
Tue 7/144:22 pm
PIA
- GSP
1 stop6h 29m
American Airlines
Deal found 6/9![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/1112:46 pm
GSP
- MDW
1 stop6h 21m
Delta
Wed 7/1511:05 am
MDW
- GSP
1 stop4h 02m
Delta
Deal found 6/8![Delta logo]()
$295
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/147:00 am
GSP
- MDW
1 stop5h 00m
Southwest
Wed 7/1511:25 am
MDW
- GSP
2 stops7h 55m
Southwest
Deal found 6/9![Southwest logo]()
$294
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/157:40 pm
GSP
- MDW
1 stop4h 35m
Southwest
Tue 7/2110:00 am
MDW
- GSP
2 stops8h 00m
Southwest
Deal found 6/7![Southwest logo]()
$312
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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
Tue 7/217:25 am
MDW
- GSP
1 stop4h 45m
Southwest
Deal found 6/6![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/217:00 am
GSP
- MDW
2 stops9h 10m
Southwest
Thu 7/232:30 pm
MDW
- GSP
1 stop6h 10m
Southwest
Deal found 6/7![Southwest logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/238:25 am
GSP
- EVV
1 stop12h 01m
Allegiant Air
Sun 7/268:13 am
EVV
- GSP
1 stop5h 48m
Allegiant Air
Deal found 6/8![Allegiant Air logo]()
$270
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/257:08 pm
GSP
- STL
1 stop5h 36m
United Airlines
Tue 7/281:13 pm
STL
- GSP
1 stop7h 13m
United Airlines
Deal found 6/5![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/301:55 pm
GSP
- MDW
2 stops9h 05m
Southwest
Sun 8/26:10 am
MDW
- GSP
1 stop5h 00m
Southwest
Deal found 6/5![Southwest logo]()
$309
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 10, 2026.
Search for one-way flight options from Greenville to Illinois. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 10/2710:50 am
GSP
- MDW
1 stop5h 15m
Southwest
Deal found 6/9![Southwest logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/74:57 pm
GSP
- ORD
1 stop20h 18m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 9/38:37 am
GSP
- ORD
1 stop28h 48m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 9/78:28 pm
GSP
- ORD
1 stop27h 46m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/308:37 am
GSP
- ORD
1 stop28h 38m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/313:31 pm
GSP
- ORD
1 stop21h 44m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/13:48 pm
GSP
- ORD
1 stop21h 36m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/203:10 pm
GSP
- STL
2 stops42h 47m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$137
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/18:40 pm
GSP
- MDW
1 stop3h 40m
Southwest
Deal found 6/9![Southwest logo]()
$145
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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
Deal found 6/7![Southwest logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/1712:06 pm
GSP
- STL
2 stops21h 51m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$160
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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
Deal found 6/7![Southwest logo]()
$160
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $267 (Southwest) |
One-way from | $109 (Southwest) |
Popular in | March |
Cheapest in | February |
Average price | $351 |
Good round-trip deal | $357 or less |
Good one-way deal | $273 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 10, 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
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Wed 7/8
5:43 pm-7:00 pm
Nonstop2h 17m
Chicago O'Hare Intl
Wed 7/15
6:17 pm-9:26 pm
Nonstop2h 09m
$269
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Sat 7/4
6:10 am-7:30 am
Nonstop2h 20m
Chicago O'Hare Intl
Mon 7/6
6:17 pm-9:26 pm
Nonstop2h 09m
$269
Quickest round-trip
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 8/6
6:10 am-7:30 am
Nonstop2h 20m
Chicago O'Hare Intl
Sun 8/9
6:55 am-9:55 am
Nonstop2h 00m
$269
GreenvilleSt. Louis
GSP - STL
GSPSTL
Greenville
Wed 7/8
7:40 pm-11:05 pm
1 stop4h 25m
Lambert-St Louis
Tue 7/14
5:40 am-1:10 pm
2 stops6h 30m
$272
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Wed 7/1
6:10 am-7:30 am
Nonstop2h 20m
Chicago O'Hare Intl
Mon 7/6
6:17 pm-9:26 pm
Nonstop2h 09m
$277
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Sat 6/27
5:43 pm-7:00 pm
Nonstop2h 17m
Chicago O'Hare Intl
Sat 7/4
1:55 pm-5:00 pm
Nonstop2h 05m
$277
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Tue 7/7
5:43 pm-7:00 pm
Nonstop2h 17m
Chicago O'Hare Intl
Sat 7/11
6:17 pm-9:26 pm
Nonstop2h 09m
$277
GreenvilleSt. Louis
GSP - STL
GSPSTL
Greenville
Wed 8/12
5:30 pm-10:10 pm
1 stop5h 40m
Lambert-St Louis
Sat 8/15
6:50 am-2:55 pm
2 stops7h 05m
$279
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Tue 7/7
7:40 pm-11:31 pm
1 stop4h 51m
Chicago O'Hare Intl
Mon 7/13
6:55 am-9:55 am
Nonstop2h 00m
$279
GreenvilleChicago
GSP - MDW
GSPMDW
Greenville
Thu 8/27
4:40 pm-10:20 pm
2 stops6h 40m
Chicago Midway
Sun 8/30
5:00 am-10:10 am
1 stop4h 10m
$281
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-EVV
GSP-MDW
GSP-PIA
GSP-ORD
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-EVV
GSP-MDW
GSP-PIA
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 10, 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 10, 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 (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 8, 2026.
Travelers seeking maximum savings on their Greenville to Illinois flight should consider departing on Thursday 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 10, 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.
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
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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Complete your trip
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Greenville and Illinois flights
Browse other Greenville and Illinois flight options. Last updated on June 10, 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$107 | Average$226 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$322 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$202 | Average$309 | FlexibilityNo cancel fee | On-time71% |