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$98+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$206
(Delta)

One-way from

$98
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$319

Good round-trip deal

$290 or less

Good one-way deal

$257 or less
From Greenville to Illinois
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One-way flight from Greenville to Illinois
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High demand for flights, 2% potential price rise
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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 September 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 September 15, 2025.

This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1811:29 amGSP - ORD
1 stop5h 42mDelta
Wed 10/226:00 amORD - GSP
1 stop7h 30mDelta
Deal found 9/14$206
This Southwest deal was found by Cheapflights users on 9/14. 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.
Wed 10/296:05 amGSP - MDW
1 stop6h 55mSouthwest
Sat 11/111:45 amMDW - GSP
1 stop5h 30mSouthwest
Deal found 9/14$206
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1810:00 amGSP - ORD
1 stop4h 55mUnited Airlines
Tue 12/25:50 pmORD - GSP
Nonstop1h 59mUnited Airlines
Deal found 9/12$212
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:36 pmGSP - ORD
1 stop5h 25mDelta
Tue 12/94:21 pmORD - GSP
1 stop6h 35mDelta
Deal found 9/14$213
This Delta deal was found by Cheapflights users on 9/12. 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.
Sat 10/1111:29 amGSP - ORD
1 stop5h 42mDelta
Sat 10/185:20 amORD - GSP
1 stop3h 49mDelta
Deal found 9/12$215
This Delta deal was found by Cheapflights users on 9/12. 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.
Sat 10/115:16 pmGSP - MDW
1 stop5h 58mDelta
Sat 10/186:00 amMDW - GSP
1 stop5h 47mDelta
Deal found 9/12$215
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/83:00 pmGSP - MDW
1 stop4h 30mSouthwest
Sat 10/1811:45 amMDW - GSP
1 stop5h 30mSouthwest
Deal found 9/12$218
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:34 amGSP - ORD
Nonstop2h 24mAmerican Airlines
Sun 10/58:01 amORD - GSP
Nonstop1h 55mAmerican Airlines
Deal found 9/14$219
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/173:55 pmGSP - ORD
Nonstop2h 10mUnited Airlines
Sat 10/181:50 pmORD - GSP
Nonstop2h 03mUnited Airlines
Deal found 9/13$220
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/65:30 amGSP - ORD
1 stop4h 02mDelta
Sun 11/96:03 pmORD - GSP
1 stop4h 52mDelta
Deal found 9/14$222
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:04 pmGSP - ORD
Nonstop2h 15mAmerican Airlines
Sat 10/188:00 amORD - GSP
Nonstop1h 52mAmerican Airlines
Deal found 9/14$226
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:00 amGSP - ORD
1 stop5h 25mAmerican Airlines
Wed 11/198:15 amORD - GSP
Nonstop1h 57mAmerican Airlines
Deal found 9/14$229

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 September 15, 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 - MDW

GSPMDW

Greenville

Wed 10/29

3:00 pm-10:25 pm

2 stops8h 25m

Chicago Midway

Sat 11/1

11:45 am-6:15 pm

1 stop5h 30m

$211

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Tue 11/18

10:00 am-1:55 pm

1 stop4h 55m

Chicago O'Hare Intl

Tue 12/2

5:50 pm-8:49 pm

Nonstop1h 59m

$212

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Fri 12/5

7:36 pm-12:01 am

1 stop5h 25m

Chicago O'Hare Intl

Tue 12/9

4:21 pm-11:56 pm

1 stop6h 35m

$213

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Fri 12/5

7:36 pm-12:01 am

1 stop5h 25m

Chicago O'Hare Intl

Wed 12/10

2:32 pm-9:41 pm

1 stop6h 09m

$213

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Tue 11/18

3:32 pm-10:30 pm

1 stop7h 58m

Chicago O'Hare Intl

Tue 12/2

2:30 pm-10:04 pm

1 stop6h 34m

$215

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Sat 10/25

9:45 am-2:58 pm

1 stop6h 13m

Chicago O'Hare Intl

Mon 10/27

6:45 am-12:50 pm

1 stop5h 05m

$215

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

Sat 10/11

5:16 pm-10:14 pm

1 stop5h 58m

Chicago Midway

Sat 10/18

6:00 am-12:47 pm

1 stop5h 47m

$215

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

Sat 10/25

5:16 pm-10:14 pm

1 stop5h 58m

Chicago Midway

Mon 10/27

6:00 am-12:50 pm

1 stop5h 50m

$215

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

Fri 10/17

3:55 pm-5:05 pm

Nonstop2h 10m

Chicago O'Hare Intl

Sat 10/18

1:50 pm-4:53 pm

Nonstop2h 03m

$220

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

Wed 11/26

7:27 am-12:34 pm

1 stop6h 07m

Chicago Midway

Mon 12/1

5:34 pm-11:55 pm

1 stop5h 21m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 51 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 September 15, 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 September 15, 2025.

The most flights from GSP to USIL are scheduled on a Monday (21 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?

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 September 15, 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
4,245 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,956 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,931 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Greenville to Illinois?

    For as low as $212, Southwest can have you in Illinois from Greenville in 4h 55m. There are 577 mi between Greenville and Illinois. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 United Airlines ($98), American Airlines ($98), and Delta ($99).

  • 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 Emirates (100%), GoJet (95%) or Avianca (92%) 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 $837 for a flight from Greenville to Illinois. The cheapest flight overall is $160 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$180Average$271FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$202Average$382FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$212Average$353FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$232Average$402FlexibilityNo cancel feeOn-time63%

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