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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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$215
(Delta)

One-way from

$108
(Southwest)

Popular in

September

Cheapest in

February

Average price

$295

Good round-trip deal

$296 or less

Good one-way deal

$200 or less
Provider with most accurate pricing for Greenville-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Greenville-Chicago (CHI) flights.
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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. 2% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This Delta deal was found by Cheapflights users on 4/16. 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.
Wed 6/1111:15 amGSP - ORD
1 stop6h 25mDelta
Wed 6/187:10 amORD - GSP
1 stop6h 04mDelta
Deal found 4/16$215
This Delta deal was found by Cheapflights users on 4/16. 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.
Sat 7/127:15 amGSP - MDW
1 stop6h 15mDelta
Wed 7/166:00 amMDW - GSP
1 stop6h 13mDelta
Deal found 4/16$215
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/229:30 amGSP - ORD
Nonstop2h 15mUnited Airlines
Mon 5/267:35 pmORD - GSP
Nonstop2h 08mUnited Airlines
Deal found 4/16$225
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Sat 6/76:26 pmGSP - ORD
Nonstop2h 08mAmerican Airlines
Mon 6/98:06 amORD - GSP
Nonstop1h 47mAmerican Airlines
Deal found 4/16$233
This Southwest deal was found by Cheapflights users on 4/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/138:10 amGSP - ORD
1 stop4h 40mSouthwest
Tue 5/131:50 pmORD - GSP
1 stop5h 20mSouthwest
Deal found 4/16$239
This Delta deal was found by Cheapflights users on 4/17. 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.
Fri 5/167:59 pmGSP - MLI
1 stop3h 58mDelta
Tue 5/205:15 pmMLI - GSP
1 stop5h 37mDelta
Deal found 4/17$249
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1110:27 amGSP - PIA
2 stops11h 55mUnited Airlines
Sat 6/145:25 pmPIA - GSP
1 stop4h 18mUnited Airlines
Deal found 4/16$254
This Delta deal was found by Cheapflights users on 4/17. 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.
Tue 5/206:30 amGSP - STL
1 stop3h 30mDelta
Sun 5/2510:45 amSTL - GSP
1 stop6h 08mDelta
Deal found 4/17$257
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Sat 6/286:26 pmGSP - MLI
1 stop6h 16mAmerican Airlines
Sat 7/55:00 amMLI - GSP
1 stop4h 38mAmerican Airlines
Deal found 4/16$259
This Southwest deal was found by Cheapflights users on 4/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/208:10 amGSP - STL
2 stops9h 35mSouthwest
Sun 5/2511:50 amSTL - GSP
1 stop5h 00mSouthwest
Deal found 4/17$262
This Southwest deal was found by Cheapflights users on 4/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2610:20 amGSP - MDW
2 stops6h 35mSouthwest
Tue 4/296:30 amMDW - GSP
1 stop7h 35mSouthwest
Deal found 4/16$268
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/93:55 pmGSP - ORD
2 stops32h 34mMultiple Airlines
Sun 5/119:55 amORD - GSP
1 stop28h 10mMultiple Airlines
Deal found 4/16$287

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 April 17, 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

Wed 6/11

11:15 am-4:40 pm

1 stop6h 25m

Chicago O'Hare Intl

Wed 6/18

7:10 am-2:14 pm

1 stop6h 04m

$215

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

Sat 7/12

7:15 am-12:30 pm

1 stop6h 15m

Chicago Midway

Wed 7/16

6:00 am-1:13 pm

1 stop6h 13m

$215

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Thu 5/22

9:30 am-10:45 am

Nonstop2h 15m

Chicago O'Hare Intl

Mon 5/26

7:35 pm-10:43 pm

Nonstop2h 08m

$225

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Sat 6/7

6:26 pm-7:34 pm

Nonstop2h 08m

Chicago O'Hare Intl

Mon 6/9

8:06 am-10:53 am

Nonstop1h 47m

$233

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Tue 5/13

8:10 am-11:50 am

1 stop4h 40m

Chicago O'Hare Intl

Tue 5/13

1:50 pm-8:10 pm

1 stop5h 20m

$239

GreenvilleMoline

GSP - MLI

GSPMLI

Greenville

Fri 5/16

7:59 pm-10:57 pm

1 stop3h 58m

Moline Quad-City

Tue 5/20

5:15 pm-11:52 pm

1 stop5h 37m

$249

GreenvillePeoria

GSP - PIA

GSPPIA

Greenville

Wed 6/11

10:27 am-9:22 pm

2 stops11h 55m

Greater Peoria

Sat 6/14

5:25 pm-10:43 pm

1 stop4h 18m

$254

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

Tue 5/20

6:30 am-9:00 am

1 stop3h 30m

Lambert-St Louis

Sun 5/25

10:45 am-5:53 pm

1 stop6h 08m

$257

GreenvilleMoline

GSP - MLI

GSPMLI

Greenville

Sat 6/28

6:26 pm-11:42 pm

1 stop6h 16m

Moline Quad-City

Sat 7/5

5:00 am-10:38 am

1 stop4h 38m

$259

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

Tue 5/20

8:10 am-4:45 pm

2 stops9h 35m

Lambert-St Louis

Sun 5/25

11:50 am-5:50 pm

1 stop5h 00m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 36 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 April 17, 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 April 17, 2025.

The most flights from GSP to USIL are scheduled on a Monday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 April 17, 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Greenville to Illinois have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,280 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,917 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,667 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Allegiant Air
7.3
Good
734 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 Southwest ($108), American Airlines ($146), and Delta ($146).

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

    While some choose either Greenville - Chicago Midway or Greenville - Lambert-St Louis, 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 Avianca (86%), SkyWest Airlines (86%) or Qatar Airways (84%) 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 $1,095 for a flight from Greenville to Illinois. The cheapest flight overall is $152 while the most popular route, (Greenville - Chicago O'Hare Intl) is currently priced at $202.

  • 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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Alternative routes for Greenville to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$209Average$356FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$433FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$246Average$320FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$304Average$397FlexibilityNo cancel feeOn-time63%

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