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$108+ 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
juil. 23 — juil. 301
mer. 7/23
mer. 7/30
1 adult, Economy
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Cheap flight deals from Greenville to Illinois

Keep the following information in mind while searching for Greenville to Illinois flight deals. Data was last updated juillet 18, 2025.

Round-trip from

$205
(United Airlines)

One-way from

$108
(Delta)

Popular in

September

Cheapest in

November

Average price

$285

Good round-trip deal

$309 or less

Good one-way deal

$253 or less
From Greenville to Illinois
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One-way flight from Greenville to Illinois
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Highest demand for flights based on searches. 8% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Greenville to Illinois.
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Price to beat on a one-way flight from Greenville to Illinois.
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Find flight deals from Greenville to Illinois

Cheapest flights from Greenville to Illinois
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 juillet 18, 2025.

This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/85:34 pmGSP - ORD
Nonstop2h 21mUnited Airlines
mer. 9/108:50 amORD - GSP
1 stop4h 26mUnited Airlines
Deal found 7/14$205
This American Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/157:46 pmGSP - ORD
Nonstop2h 11mAmerican Airlines
lun. 8/188:01 amORD - GSP
Nonstop1h 54mAmerican Airlines
Deal found 7/15$207
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/135:30 amGSP - ORD
1 stop4h 07mDelta
sam. 8/163:30 pmORD - GSP
1 stop4h 41mDelta
Deal found 7/17$215
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/77:00 amGSP - MDW
1 stop6h 29mDelta
lun. 8/111:08 pmMDW - GSP
1 stop3h 36mDelta
Deal found 7/15$215
This Southwest deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/86:45 pmGSP - MDW
1 stop6h 20mSouthwest
mer. 9/1011:25 amMDW - GSP
2 stops5h 40mSouthwest
Deal found 7/14$220
This American Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/75:00 amGSP - STL
1 stop4h 04mAmerican Airlines
mer. 8/136:00 amSTL - GSP
1 stop5h 30mAmerican Airlines
Deal found 7/16$235
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/287:05 amGSP - STL
1 stop7h 15mDelta
mar. 9/23:36 pmSTL - GSP
1 stop4h 35mDelta
Deal found 7/15$237
This Southwest deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/2810:45 amGSP - STL
1 stop4h 05mSouthwest
mar. 9/26:10 amSTL - GSP
2 stops7h 30mSouthwest
Deal found 7/15$242
This American Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/157:21 pmGSP - MLI
1 stop4h 40mAmerican Airlines
dim. 8/1710:42 amMLI - GSP
1 stop8h 04mAmerican Airlines
Deal found 7/15$259
This American Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/287:46 pmGSP - PIA
1 stop4h 36mAmerican Airlines
mar. 9/26:45 amPIA - GSP
1 stop5h 54mAmerican Airlines
Deal found 7/15$301
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/185:30 amGSP - EVV
1 stop5h 04mDelta
jeu. 9/256:23 amEVV - GSP
1 stop6h 05mDelta
Deal found 7/16$307
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/125:59 pmGSP - BMI
1 stop5h 17mDelta
dim. 8/176:05 amBMI - GSP
1 stop6h 09mDelta
Deal found 7/17$319

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 juillet 18, 2025.
Use the filters below to find and compare flights from Greenville to Illinois that are best for you.

Fly from

Greenville

Fly to

Illinois

Route

Depart

Return

Price

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

lun. 9/8

5:34 pm-6:55 pm

Nonstop2h 21m

Chicago O'Hare Intl

jeu. 9/11

8:50 am-2:16 pm

1 stop4h 26m

$205

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

ven. 8/15

7:46 pm-8:57 pm

Nonstop2h 11m

Chicago O'Hare Intl

lun. 8/18

7:08 pm-10:05 pm

Nonstop1h 57m

$207

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

mer. 8/13

7:05 am-10:20 am

1 stop4h 15m

Chicago O'Hare Intl

sam. 8/16

3:30 pm-10:24 pm

1 stop5h 54m

$215

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

jeu. 8/7

7:00 am-12:29 pm

1 stop6h 29m

Chicago Midway

lun. 8/11

1:08 pm-5:44 pm

1 stop3h 36m

$215

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

lun. 9/8

6:45 pm-12:05 am

1 stop6h 20m

Chicago Midway

mer. 9/10

11:25 am-6:05 pm

2 stops5h 40m

$220

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

jeu. 8/7

5:00 am-8:04 am

1 stop4h 04m

Lambert-St Louis

mer. 8/13

6:00 am-12:30 pm

1 stop5h 30m

$235

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

jeu. 8/28

7:05 am-1:20 pm

1 stop7h 15m

Lambert-St Louis

mar. 9/2

3:36 pm-9:11 pm

1 stop4h 35m

$237

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

jeu. 8/28

10:45 am-5:25 pm

2 stops7h 40m

Lambert-St Louis

lun. 9/1

5:15 am-1:15 pm

1 stop7h 00m

$242

GreenvilleMoline

GSP - MLI

GSPMLI

Greenville

ven. 8/15

7:21 pm-11:01 pm

1 stop4h 40m

Moline Quad-City

dim. 8/17

10:42 am-7:46 pm

1 stop8h 04m

$259

GreenvillePeoria

GSP - PIA

GSPPIA

Greenville

jeu. 8/28

7:46 pm-11:22 pm

1 stop4h 36m

Greater Peoria

mar. 9/2

6:45 am-1:39 pm

1 stop5h 54m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 32 results
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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.
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

What is the cheapest month to book a flight from Greenville to Illinois?

Currently, August is the cheapest month in which you can book a flight from Greenville to Illinois (average of $245). Flying from Greenville to Illinois in March is currently the most expensive (average of $321). 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 juillet 18, 2025.

When flying from Greenville to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 juillet 18, 2025.

The most flights from GSP to USIL are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

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 juillet 18, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Entertainment

7.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Entertainment

7.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,958 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Entertainment

7.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,864 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Entertainment

7.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Entertainment

7.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Allegiant Air
7.2
Good
702 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Entertainment

7.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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.

  • What airport do you fly from for flights from Greenville to Illinois?

    If you book a flight to Illinois from Greenville, you will be flying from Greenville, which is the city’s only airport. Greenville (GSP) is located 10.4 mi from the center of Greenville.

  • What are the cheapest airlines to fly from Greenville to Illinois one-way?

    The cheapest airlines for a one-way flight from Greenville to Illinois are Delta ($108), Southwest ($113), and Allegiant Air ($153).

  • What are the most popular routes from Greenville to Illinois?

    While some choose either Greenville - Chicago Midway or Greenville - Greater Peoria, Greenville - Chicago O'Hare Intl is the most popular route from Greenville to Illinois.

  • What are the most reliable airlines from Greenville to Illinois?

    Consider ANA (87%), Avianca (87%) or Republic Airways (87%) when booking your flight. These represent the most reliable airlines when flying from Greenville to Illinois.

  • What are the cheapest flights from Greenville to Illinois?

    On average you can expect to pay $1,778 for a flight from Greenville to Illinois. The cheapest flight overall is $158 while the most popular route, (Greenville - Chicago O'Hare Intl) is currently priced at $195.

  • Can I find deals for flights from Greenville to Illinois that include hotel bookings?

    Yes. In addition to deals on Greenville to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Greenville to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Greenville to Illinois.

  • Can I find deals for business class flights from Greenville to Illinois?

    Yes. Cheapflights offers flight deals from Greenville to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Greenville to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Greenville to Illinois (average of $245). Flying from Greenville to Illinois in March is currently the most expensive (average of $321). 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.

See more FAQs

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Top 4 airlines flying from Greenville to Illinois

Discover the top 4 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 juillet 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$180Average$325FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$206Average$325FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$211Average$312FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$304Average$402FlexibilityNo cancel feeOn-time63%

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