$97+ Cheap flights from Greenville (GSP) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
Aug 7 — Aug 141
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Greenville to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Greenville to Illinois
Cheapest
Best
Last-minute
One-way
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 8, 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 8, 2026.
This Southwest deal was found by Cheapflights users on 7/7. 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 8/45:30 pm
GSP
- STL
1 stop5h 40m
Southwest
Tue 8/117:15 am
STL
- GSP
1 stop4h 10m
Southwest
Deal found 7/7![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 7/7. 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.
Thu 8/66:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Sun 8/91:55 pm
ORD
- GSP
Nonstop2h 05m
United Airlines
Deal found 7/7![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 7/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:34 pm
GSP
- ORD
Nonstop2h 30m
American Airlines
Sun 8/98:00 am
ORD
- GSP
Nonstop2h 00m
American Airlines
Deal found 7/6![American Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:06 pm
GSP
- ORD
1 stop25h 09m
Multiple Airlines
Mon 8/108:05 am
ORD
- GSP
1 stop7h 02m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 7/6. 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 8/134:40 pm
GSP
- MDW
2 stops6h 40m
Southwest
Sun 8/165:00 am
MDW
- GSP
1 stop4h 10m
Southwest
Deal found 7/6![Southwest logo]()
$271
This Southwest deal was found by Cheapflights users on 7/7. 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 10/308:25 am
GSP
- MDW
2 stops6h 00m
Southwest
Tue 11/36:05 am
MDW
- GSP
2 stops7h 05m
Southwest
Deal found 7/7![Southwest logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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
Thu 8/278:05 am
ORD
- GSP
2 stops10h 34m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 8/148:45 pm
GSP
- STL
1 stop28h 14m
Multiple Airlines
Fri 8/216:17 pm
STL
- GSP
2 stops36h 40m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$280
This Southwest deal was found by Cheapflights users on 7/7. 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.
Sun 8/166:55 pm
GSP
- MDW
1 stop4h 30m
Southwest
Fri 8/2110:30 am
MDW
- GSP
1 stop4h 35m
Southwest
Deal found 7/7![Southwest logo]()
$280
This American Airlines deal was found by Cheapflights users on 7/5. 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 8/145:11 pm
GSP
- ORD
1 stop7h 48m
American Airlines
Mon 8/178:00 am
ORD
- GSP
Nonstop2h 00m
American Airlines
Deal found 7/5![American Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:37 am
GSP
- ORD
1 stop28h 38m
Multiple Airlines
Fri 8/218:05 am
ORD
- GSP
1 stop7h 00m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 8/148:13 pm
GSP
- ORD
2 stops17h 02m
Multiple Airlines
Fri 8/218:05 am
ORD
- GSP
1 stop8h 34m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$285
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 8, 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 8, 2026.
This Southwest deal was found by Cheapflights users on 7/7. 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 8/45:30 pm
GSP
- STL
1 stop5h 40m
Southwest
Tue 8/117:15 am
STL
- GSP
1 stop4h 10m
Southwest
Deal found 7/7![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 7/7. 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.
Mon 8/35:43 pm
GSP
- ORD
Nonstop2h 17m
United Airlines
Thu 8/1310:25 am
ORD
- GSP
Nonstop2h 07m
United Airlines
Deal found 7/7![United Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 7/6. 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.
Thu 9/177:10 am
GSP
- ORD
1 stop6h 49m
Delta
Mon 9/211:55 pm
ORD
- GSP
1 stop6h 31m
Delta
Deal found 7/6![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:35 am
GSP
- BMI
2 stops11h 59m
American Airlines
Sat 7/256:00 pm
BMI
- GSP
1 stop4h 59m
American Airlines
Deal found 7/6![American Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 7/7. 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.
Mon 8/36:55 am
GSP
- ORD
1 stop4h 18m
Delta
Thu 8/138:05 am
ORD
- GSP
1 stop4h 50m
Delta
Deal found 7/7![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/6. 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.
Fri 8/288:40 am
GSP
- MDW
1 stop6h 25m
Southwest
Sun 8/305:00 am
MDW
- GSP
1 stop4h 10m
Southwest
Deal found 7/6![Southwest logo]()
$289
This Delta deal was found by Cheapflights users on 7/5. 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 8/145:20 pm
GSP
- ORD
1 stop4h 35m
Delta
Tue 8/181:59 pm
ORD
- GSP
1 stop6h 27m
Delta
Deal found 7/5![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:30 pm
GSP
- MDW
1 stop3h 40m
Southwest
Sat 8/228:05 am
MDW
- GSP
1 stop5h 50m
Southwest
Deal found 7/3![Southwest logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/177:40 pm
GSP
- ORD
1 stop4h 51m
United Airlines
Sun 7/196:55 am
ORD
- GSP
Nonstop2h 00m
United Airlines
Deal found 7/2![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 7/7. 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 11/207:15 am
GSP
- MDW
1 stop6h 18m
Delta
Sun 11/226:00 am
MDW
- GSP
1 stop3h 58m
Delta
Deal found 7/7![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/6. 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 8/274:40 pm
GSP
- MDW
1 stop5h 20m
Southwest
Sun 8/307:35 am
MDW
- GSP
1 stop4h 05m
Southwest
Deal found 7/6![Southwest logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:20 am
GSP
- STL
1 stop6h 53m
United Airlines
Wed 10/78:00 am
STL
- GSP
1 stop4h 35m
United Airlines
Deal found 7/2![United Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 8/37:20 pm
GSP
- EVV
1 stop5h 39m
American Airlines
Mon 8/101:58 pm
EVV
- GSP
1 stop5h 48m
American Airlines
Deal found 7/4![American Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 7/7. 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 9/256:25 pm
GSP
- MDW
1 stop5h 20m
Delta
Sun 9/276:05 am
MDW
- GSP
1 stop3h 58m
Delta
Deal found 7/7![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/112:50 pm
GSP
- MDW
2 stops10h 10m
Southwest
Wed 8/57:40 am
MDW
- GSP
1 stop3h 45m
Southwest
Deal found 7/3![Southwest logo]()
$294
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Tue 7/2110:45 am
GSP
- MLI
1 stop4h 11m
United Airlines
Sat 7/251:15 pm
MLI
- GSP
2 stops9h 19m
United Airlines
Deal found 7/6![United Airlines logo]()
$344
This American Airlines deal was found by Cheapflights users on 7/5. 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.
Sat 8/87:00 am
GSP
- STL
1 stop6h 15m
American Airlines
Sat 8/155:00 am
STL
- GSP
1 stop5h 00m
American Airlines
Deal found 7/5![American Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 7/6. 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.
Fri 8/75:20 pm
GSP
- MDW
1 stop6h 16m
Delta
Tue 8/116:05 am
MDW
- GSP
1 stop3h 57m
Delta
Deal found 7/6![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/5. 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.
Wed 7/297:40 pm
GSP
- MDW
1 stop4h 35m
Southwest
Sat 8/12:35 pm
MDW
- GSP
2 stops7h 20m
Southwest
Deal found 7/5![Southwest logo]()
$294
This United Airlines deal was found by Cheapflights users on 7/5. 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.
Wed 9/1610:33 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Mon 9/216:29 am
ORD
- GSP
Nonstop2h 06m
United Airlines
Deal found 7/5![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 9/26:00 am
GSP
- MDW
1 stop4h 59m
Delta
Wed 9/96:05 am
MDW
- GSP
1 stop3h 58m
Delta
Deal found 7/4![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:18 pm
GSP
- BMI
2 stops7h 17m
American Airlines
Mon 7/275:45 pm
BMI
- GSP
1 stop4h 40m
American Airlines
Deal found 7/3![American Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 9/236:20 am
GSP
- ORD
Nonstop2h 07m
United Airlines
Sat 9/265:59 pm
ORD
- GSP
Nonstop1h 59m
United Airlines
Deal found 7/4![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 7/3![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:55 pm
GSP
- STL
1 stop4h 10m
Southwest
Mon 9/78:00 am
STL
- GSP
1 stop3h 30m
Southwest
Deal found 7/3![Southwest logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/5. 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 8/155:43 pm
GSP
- ORD
Nonstop2h 20m
United Airlines
Tue 8/188:45 am
ORD
- GSP
1 stop4h 34m
United Airlines
Deal found 7/5![United Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 7/5. 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 7/177:20 pm
GSP
- BMI
1 stop6h 15m
American Airlines
Sat 7/184:30 pm
BMI
- GSP
1 stop5h 46m
American Airlines
Deal found 7/5![American Airlines logo]()
$457
This Delta deal was found by Cheapflights users on 7/6. 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.
Tue 7/2111:42 am
GSP
- BMI
1 stop4h 52m
Delta
Sat 7/254:18 pm
BMI
- GSP
1 stop6h 36m
Delta
Deal found 7/6![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:45 am
GSP
- STL
1 stop5h 10m
Southwest
Mon 10/126:45 am
STL
- GSP
1 stop5h 50m
Southwest
Deal found 7/4![Southwest logo]()
$384
This United Airlines deal was found by Cheapflights users on 7/7. 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 8/266:30 am
GSP
- PIA
1 stop4h 36m
United Airlines
Sat 8/293:35 pm
PIA
- GSP
1 stop4h 32m
United Airlines
Deal found 7/7![United Airlines logo]()
$389
Last-minute flights from Greenville to IllinoisDiscover last-minute flight deals from Greenville to Illinois. Data last updated July 8, 2026 and is based on user searches.
Discover last-minute flight deals from Greenville to Illinois. Data last updated July 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:06 pm
GSP
- ORD
1 stop25h 09m
Multiple Airlines
Mon 8/108:05 am
ORD
- GSP
1 stop7h 02m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 7/7. 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 8/45:30 pm
GSP
- STL
1 stop5h 40m
Southwest
Tue 8/117:15 am
STL
- GSP
1 stop4h 10m
Southwest
Deal found 7/7![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 7/7. 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.
Thu 8/66:10 am
GSP
- ORD
Nonstop2h 20m
United Airlines
Sun 8/91:55 pm
ORD
- GSP
Nonstop2h 05m
United Airlines
Deal found 7/7![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 7/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:34 pm
GSP
- ORD
Nonstop2h 30m
American Airlines
Sun 8/98:00 am
ORD
- GSP
Nonstop2h 00m
American Airlines
Deal found 7/6![American Airlines logo]()
$270
This Southwest deal was found by Cheapflights users on 7/6. 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 8/134:40 pm
GSP
- MDW
2 stops6h 40m
Southwest
Sun 8/165:00 am
MDW
- GSP
1 stop4h 10m
Southwest
Deal found 7/6![Southwest logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 8/148:45 pm
GSP
- STL
1 stop28h 14m
Multiple Airlines
Fri 8/216:17 pm
STL
- GSP
2 stops36h 40m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$280
This American Airlines deal was found by Cheapflights users on 7/5. 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 8/145:11 pm
GSP
- ORD
1 stop7h 48m
American Airlines
Mon 8/178:00 am
ORD
- GSP
Nonstop2h 00m
American Airlines
Deal found 7/5![American Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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 8/148:13 pm
GSP
- ORD
2 stops17h 02m
Multiple Airlines
Fri 8/218:05 am
ORD
- GSP
1 stop8h 34m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 7/7. 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.
Sun 8/166:55 pm
GSP
- MDW
1 stop4h 30m
Southwest
Fri 8/2110:30 am
MDW
- GSP
1 stop4h 35m
Southwest
Deal found 7/7![Southwest logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:37 am
GSP
- ORD
1 stop28h 38m
Multiple Airlines
Fri 8/218:05 am
ORD
- GSP
1 stop7h 00m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:37 am
GSP
- ORD
1 stop29h 13m
Multiple Airlines
Sat 8/221:59 pm
ORD
- GSP
2 stops16h 58m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” 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
Thu 8/278:05 am
ORD
- GSP
2 stops10h 34m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$278
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 8, 2026.
Search for one-way flight options from Greenville to Illinois. Find affordable one-way fares based on user searches. Data last updated July 8, 2026.
This Southwest deal was found by Cheapflights users on 7/7. 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 9/18:15 am
GSP
- MDW
1 stop4h 20m
Southwest
Deal found 7/7![Southwest logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:34 pm
GSP
- ORD
1 stop20h 16m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 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 7/6![Multiple Airlines logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 10/58:32 pm
GSP
- ORD
1 stop28h 23m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:07 am
GSP
- ORD
2 stops26h 43m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$131
This Southwest deal was found by Cheapflights users on 7/6. 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.
Tue 8/185:30 pm
GSP
- MDW
1 stop3h 40m
Southwest
Deal found 7/6![Southwest logo]()
$145
This Southwest deal was found by Cheapflights users on 7/6. 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.
Mon 7/276:50 pm
GSP
- MDW
1 stop4h 10m
Southwest
Deal found 7/6![Southwest logo]()
$160
This Southwest deal was found by Cheapflights users on 7/6. 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.
Fri 7/246:50 pm
GSP
- MDW
1 stop4h 10m
Southwest
Deal found 7/6![Southwest logo]()
$165
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 7/3![Southwest logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:13 pm
GSP
- MDW
3 stops15h 54m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 7/6. 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.
Fri 7/176:50 pm
GSP
- MDW
1 stop4h 10m
Southwest
Deal found 7/6![Southwest logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:07 am
GSP
- MDW
3 stops24h 48m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$218
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 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $257 (Southwest) |
One-way from | $97 (Southwest) |
Popular in | June |
Cheapest in | February |
Average price | $288 |
Good round-trip deal | $328 or less |
Good one-way deal | $258 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 8, 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
Tue 8/4
5:30 pm-10:10 pm
1 stop5h 40m
Lambert-St Louis
Tue 8/11
7:15 am-12:25 pm
1 stop4h 10m
$257
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Mon 8/3
5:43 pm-7:00 pm
Nonstop2h 17m
Chicago O'Hare Intl
Thu 8/13
10:25 am-1:32 pm
Nonstop2h 07m
$269
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Thu 9/17
7:10 am-12:59 pm
1 stop6h 49m
Chicago O'Hare Intl
Mon 9/21
1:55 pm-9:26 pm
1 stop6h 31m
$289
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Mon 8/3
6:55 am-10:13 am
1 stop4h 18m
Chicago O'Hare Intl
Thu 8/13
8:05 am-1:55 pm
1 stop4h 50m
$289
GreenvilleChicago
GSP - MDW
GSPMDW
Greenville
Fri 8/28
8:40 am-2:05 pm
1 stop6h 25m
Chicago Midway
Sun 8/30
5:00 am-10:10 am
1 stop4h 10m
$289
GreenvilleChicago
GSP - ORD
GSPORD
Greenville
Fri 8/14
5:20 pm-8:55 pm
1 stop4h 35m
Chicago O'Hare Intl
Tue 8/18
1:59 pm-9:26 pm
1 stop6h 27m
$289
GreenvilleChicago
GSP - MDW
GSPMDW
Greenville
Tue 8/18
5:30 pm-8:10 pm
1 stop3h 40m
Chicago Midway
Sat 8/22
8:05 am-2:55 pm
1 stop5h 50m
$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
GreenvilleChicago
GSP - MDW
GSPMDW
Greenville
Thu 8/27
4:40 pm-9:00 pm
1 stop5h 20m
Chicago Midway
Sun 8/30
7:35 am-12:40 pm
1 stop4h 05m
$289
GreenvilleChicago
GSP - MDW
GSPMDW
Greenville
Fri 9/25
6:25 pm-10:45 pm
1 stop5h 20m
Chicago Midway
Sun 9/27
6:05 am-11:03 am
1 stop3h 58m
$289
Showing 1-10 of 51 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-MLI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from 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, 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 July 8, 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 8, 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?
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 89 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 4, 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 8, 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.
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Greenville to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Greenville to Illinois by cabin class
Find flights from Greenville to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Greenville and Illinois flights
Browse other Greenville and Illinois flight options. Last updated on July 8, 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 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$107 | Average$226 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$329 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$202 | Average$312 | FlexibilityNo cancel fee | On-time71% |