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$103+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
jul. 6 — jul. 131
dom. 7/6
dom. 7/13
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 julio 1, 2025.

Round-trip from

$209
(American Airlines)

One-way from

$103
(Mytrip)

Popular in

September

Cheapest in

November

Average price

$289

Good round-trip deal

$307 or less

Good one-way deal

$268 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 ($19 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 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 julio 1, 2025.

This American Airlines deal was found by Cheapflights users on 6/30. 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. 8/157:46 pmGSP - ORD
Nonstop2h 11mAmerican Airlines
lun. 8/187:08 pmORD - GSP
Nonstop1h 57mAmerican Airlines
Deal found 6/30$209
This United Airlines deal was found by Cheapflights users on 6/30. 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. 10/249:35 amGSP - ORD
Nonstop2h 16mUnited Airlines
mié. 10/298:50 amORD - GSP
1 stop4h 20mUnited Airlines
Deal found 6/30$212
This Delta deal was found by Cheapflights users on 6/30. 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. 8/27:00 amGSP - ORD
1 stop4h 16mDelta
mar. 8/59:25 amORD - GSP
1 stop8h 05mDelta
Deal found 6/30$215
This Delta deal was found by Cheapflights users on 7/1. 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. 8/165:20 pmGSP - MDW
1 stop4h 52mDelta
mar. 8/196:04 amMDW - GSP
1 stop4h 25mDelta
Deal found 7/1$215
This Delta deal was found by Cheapflights users on 6/30. 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. 9/97:05 amGSP - STL
1 stop7h 15mDelta
mar. 9/166:04 amSTL - GSP
1 stop4h 20mDelta
Deal found 6/30$237
This Southwest deal was found by Cheapflights users on 6/30. 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. 9/93:25 pmGSP - STL
2 stops7h 40mSouthwest
mar. 9/1610:45 amSTL - GSP
1 stop6h 20mSouthwest
Deal found 6/30$242
This American Airlines deal was found by Cheapflights users on 6/29. 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. 7/307:16 pmGSP - PIA
1 stop5h 56mAmerican Airlines
dom. 8/105:00 amPIA - GSP
1 stop4h 37mAmerican Airlines
Deal found 6/29$249
This Southwest deal was found by Cheapflights users on 6/30. 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. 9/65:05 pmGSP - MDW
1 stop4h 40mSouthwest
dom. 9/710:15 amMDW - GSP
2 stops8h 00mSouthwest
Deal found 6/30$263
This American Airlines deal was found by Cheapflights users on 7/1. 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.
lun. 9/157:38 pmGSP - STL
1 stop4h 29mAmerican Airlines
jue. 9/181:21 pmSTL - GSP
1 stop4h 53mAmerican Airlines
Deal found 7/1$272
This Southwest deal was found by Cheapflights users on 7/1. 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.
vie. 9/2610:45 amGSP - ORD
1 stop6h 40mSouthwest
dom. 9/281:50 pmORD - GSP
1 stop7h 15mSouthwest
Deal found 7/1$275
This Mytrip deal was found by Cheapflights users on 6/29. 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.
vie. 7/184:05 pmGSP - ORD
1 stop8h 48mMultiple Airlines
lun. 7/215:05 amORD - GSP
1 stop9h 10mMultiple Airlines
Deal found 6/29$283
This Delta deal was found by Cheapflights users on 6/30. 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.
vie. 8/295:20 pmGSP - MLI
1 stop6h 28mDelta
lun. 9/14:59 pmMLI - GSP
1 stop5h 35mDelta
Deal found 6/30$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 julio 1, 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. 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

$209

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

sáb. 8/2

7:45 pm-11:30 pm

1 stop4h 45m

Chicago O'Hare Intl

mar. 8/5

8:55 am-12:04 pm

Nonstop2h 09m

$212

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

sáb. 8/2

7:00 am-10:16 am

1 stop4h 16m

Chicago O'Hare Intl

mar. 8/5

9:25 am-6:30 pm

1 stop8h 05m

$215

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

sáb. 8/16

5:20 pm-9:12 pm

1 stop4h 52m

Chicago Midway

mar. 8/19

6:04 am-11:29 am

1 stop4h 25m

$215

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

mar. 9/9

7:05 am-1:20 pm

1 stop7h 15m

Lambert-St Louis

mar. 9/16

6:04 am-11:24 am

1 stop4h 20m

$237

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

mar. 9/9

3:25 pm-10:05 pm

2 stops7h 40m

Lambert-St Louis

mar. 9/16

10:45 am-6:05 pm

1 stop6h 20m

$242

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

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

sáb. 9/6

5:05 pm-8:45 pm

1 stop4h 40m

Chicago Midway

dom. 9/7

10:15 am-7:15 pm

2 stops8h 00m

$263

GreenvilleSt. Louis

GSP - STL

GSPSTL

Greenville

lun. 9/15

7:38 pm-11:07 pm

1 stop4h 29m

Lambert-St Louis

jue. 9/18

1:21 pm-7:14 pm

1 stop4h 53m

$272

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

vie. 9/26

10:45 am-4:25 pm

1 stop6h 40m

Chicago O'Hare Intl

dom. 9/28

1:50 pm-10:05 pm

1 stop7h 15m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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 julio 1, 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 julio 1, 2025.

The most flights from GSP to USIL are scheduled on a Monday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 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 julio 1, 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
4,273 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.6

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
4,273 reviews
Southwest
8.0
Very good
4,273 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.6

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
7,973 reviews
Southwest
8.0
Very good
4,273 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.6

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
8,858 reviews
Southwest
8.0
Very good
4,273 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.6

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
4,273 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.6

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
710 reviews
Southwest
8.0
Very good
4,273 reviews

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.6

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 Southwest ($108), Delta ($115), and American Airlines ($144).

  • 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 Republic Airways (96%), ANA (89%) or United Airlines (85%) 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 $1,263 for a flight from Greenville to Illinois. The cheapest flight overall is $180 while the most popular route, (Greenville - Chicago O'Hare Intl) is currently priced at $209.

  • 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

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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 julio 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$180Average$330FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$209Average$332FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$213Average$314FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$304Average$402FlexibilityNo cancel feeOn-time63%

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