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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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$209
(American Airlines)

One-way from

$108
(Delta)

Popular in

September

Cheapest in

April

Average price

$289

Good round-trip deal

$319 or less

Good one-way deal

$249 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. 6% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/712:37 pmGSP - ORD
Nonstop2h 14mUnited Airlines
lun. 11/105:50 pmORD - GSP
Nonstop1h 59mUnited Airlines
Deal found 6/10$209
This Southwest deal was found by Cheapflights users on 6/11. 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.
sáb. 8/95:05 pmGSP - MDW
1 stop4h 40mSouthwest
sáb. 8/239:35 amMDW - GSP
1 stop5h 55mSouthwest
Deal found 6/11$215
This Delta deal was found by Cheapflights users on 6/12. 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.
mié. 8/134:00 pmGSP - ORD
1 stop6h 36mDelta
mié. 8/2710:30 amORD - GSP
1 stop6h 48mDelta
Deal found 6/12$217
This Delta deal was found by Cheapflights users on 6/11. 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.
sáb. 7/127:00 amGSP - MDW
1 stop6h 29mDelta
mié. 7/166:00 amMDW - GSP
1 stop3h 59mDelta
Deal found 6/11$217
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mar. 8/127:33 amGSP - ORD
Nonstop2h 22mAmerican Airlines
sáb. 8/167:08 pmORD - GSP
Nonstop1h 57mAmerican Airlines
Deal found 6/11$219
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 7/306:09 pmGSP - PIA
1 stop7h 03mAmerican Airlines
dom. 8/105:00 amPIA - GSP
1 stop4h 37mAmerican Airlines
Deal found 6/11$249
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/133:34 pmGSP - ORD
2 stops30h 56mMultiple Airlines
mié. 7/165:05 amORD - GSP
1 stop14h 47mMultiple Airlines
Deal found 6/10$257
This Delta deal was found by Cheapflights users on 6/11. 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. 8/57:30 amGSP - STL
1 stop6h 04mDelta
sáb. 8/96:00 amSTL - GSP
1 stop6h 14mDelta
Deal found 6/11$272
This Southwest deal was found by Cheapflights users on 6/11. 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.
mar. 8/53:25 pmGSP - STL
2 stops7h 40mSouthwest
sáb. 8/97:15 amSTL - GSP
1 stop8h 15mSouthwest
Deal found 6/11$283
This Southwest deal was found by Cheapflights users on 6/11. 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.
mié. 8/1310:25 amGSP - ORD
2 stops12h 05mSouthwest
mié. 8/271:50 pmORD - GSP
1 stop5h 05mSouthwest
Deal found 6/11$285
This United Airlines deal was found by Cheapflights users on 6/11. 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. 6/305:35 pmGSP - STL
1 stop6h 10mUnited Airlines
vie. 7/410:00 amSTL - GSP
2 stops7h 57mUnited Airlines
Deal found 6/11$292
This American Airlines deal was found by Cheapflights users on 6/11. 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.
vie. 8/297:15 pmGSP - MLI
1 stop3h 53mAmerican Airlines
lun. 9/111:21 amMLI - GSP
1 stop6h 55mAmerican Airlines
Deal found 6/11$294

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 junio 12, 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

vie. 11/7

12:37 pm-1:51 pm

Nonstop2h 14m

Chicago O'Hare Intl

lun. 11/10

5:50 pm-8:49 pm

Nonstop1h 59m

$209

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

sáb. 8/9

5:05 pm-8:45 pm

1 stop4h 40m

Chicago Midway

sáb. 8/23

9:35 am-4:30 pm

1 stop5h 55m

$215

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

mié. 8/13

7:48 am-12:16 pm

1 stop5h 28m

Chicago O'Hare Intl

mié. 8/27

10:30 am-6:18 pm

1 stop6h 48m

$217

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

sáb. 7/12

7:00 am-12:29 pm

1 stop6h 29m

Chicago Midway

mié. 7/16

6:00 am-10:59 am

1 stop3h 59m

$217

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

mar. 8/12

7:33 am-8:55 am

Nonstop2h 22m

Chicago O'Hare Intl

sáb. 8/16

7:08 pm-10:05 pm

Nonstop1h 57m

$219

GreenvillePeoria

GSP - PIA

GSPPIA

Greenville

mié. 7/30

7:16 pm-12:12 am

1 stop5h 56m

Greater Peoria

dom. 8/10

5:00 am-10:37 am

1 stop4h 37m

$249

GreenvilleMoline

GSP - MLI

GSPMLI

Greenville

mié. 8/13

12:14 pm-4:19 pm

1 stop5h 05m

Moline Quad-City

mar. 8/19

4:59 pm-10:24 pm

1 stop4h 25m

$249

GreenvilleMoline

GSP - MLI

GSPMLI

Greenville

mié. 8/13

12:45 pm-4:43 pm

1 stop4h 58m

Moline Quad-City

mar. 8/19

6:30 am-6:52 pm

2 stops11h 22m

$254

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

dom. 7/13

3:34 pm-9:30 pm

2 stops30h 56m

Chicago O'Hare Intl

mié. 7/16

5:05 am-8:52 pm

1 stop14h 47m

$257

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

mar. 8/5

7:30 am-12:34 pm

1 stop6h 04m

Lambert-St Louis

sáb. 8/9

6:00 am-1:14 pm

1 stop6h 14m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 38 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 junio 12, 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 junio 12, 2025.

The most flights from GSP to USIL are scheduled on a Wednesday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 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 junio 12, 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
4,287 reviews

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

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
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

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
7,950 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

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
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

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
7.3
Good
725 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

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
4,287 reviews

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

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), Allegiant Air ($136), and Southwest ($151).

  • 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 Republic Airways (95%), ANA (87%) or GoJet (86%) 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 $1,530 for a flight from Greenville to Illinois. The cheapest flight overall is $183 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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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$180Average$330FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$209Average$333FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$220Average$313FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$304Average$402FlexibilityNo cancel feeOn-time63%

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