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$95+ Cheap flights from Illinois to Greenville (GSP)

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GSP
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Illinois to Greenville

Keep the following information in mind while searching for Illinois to Greenville flight deals. Data was last updated agosto 14, 2025.

Round-trip from

$189
(Southwest)

One-way from

$95
(Southwest)

Popular in

November

Cheapest in

July

Average price

$304

Good round-trip deal

$263 or less

Good one-way deal

$258 or less
From Illinois to Greenville
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One-way flight from Illinois to Greenville
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Highest demand for flights based on searches. 11% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Illinois to Greenville.
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Price to beat on a one-way flight from Illinois to Greenville.
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Find flight deals from Illinois to Greenville

Cheapest flights from Illinois to Greenville
Explore the most affordable flight options available from Illinois to Greenville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/176:25 amMDW - GSP
1 stop7h 15mSouthwest
mié. 9/246:45 pmGSP - MDW
1 stop5h 35mSouthwest
Deal found 8/13$189
This Southwest deal was found by Cheapflights users on 8/12. 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.
mié. 9/241:50 pmORD - GSP
1 stop5h 05mSouthwest
mar. 10/76:05 amGSP - ORD
1 stop6h 45mSouthwest
Deal found 8/12$189
This United Airlines deal was found by Cheapflights users on 8/13. 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.
sáb. 9/207:35 pmORD - GSP
Nonstop2h 11mUnited Airlines
mar. 9/235:34 pmGSP - ORD
Nonstop2h 21mUnited Airlines
Deal found 8/13$195
This Delta deal was found by Cheapflights users on 8/12. 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.
mar. 9/99:25 amORD - GSP
1 stop7h 53mDelta
mar. 9/1611:00 amGSP - ORD
1 stop7h 47mDelta
Deal found 8/12$197
This American Airlines deal was found by Cheapflights users on 8/14. 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.
vie. 12/126:30 pmORD - GSP
Nonstop1h 57mAmerican Airlines
mié. 12/176:00 pmGSP - ORD
Nonstop2h 14mAmerican Airlines
Deal found 8/14$202
This American Airlines deal was found by Cheapflights users on 8/14. 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.
sáb. 9/138:01 amORD - GSP
Nonstop1h 55mAmerican Airlines
dom. 9/148:23 pmGSP - ORD
Nonstop2h 04mAmerican Airlines
Deal found 8/14$204
This Delta deal was found by Cheapflights users on 8/12. 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.
sáb. 9/206:00 amMDW - GSP
1 stop6h 09mDelta
mar. 9/237:35 amGSP - MDW
1 stop5h 13mDelta
Deal found 8/12$206
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/203:45 pmORD - GSP
1 stop4h 22mDelta
mar. 9/236:05 pmGSP - ORD
1 stop5h 18mDelta
Deal found 8/13$206
This United Airlines deal was found by Cheapflights users on 8/12. 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.
vie. 9/57:35 pmORD - GSP
Nonstop2h 11mUnited Airlines
sáb. 9/64:36 pmGSP - ORD
Nonstop2h 19mUnited Airlines
Deal found 8/12$209
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/91:21 pmSTL - GSP
1 stop4h 53mAmerican Airlines
mar. 9/165:30 pmGSP - STL
1 stop5h 52mAmerican Airlines
Deal found 8/12$209
This United Airlines deal was found by Cheapflights users on 8/14. 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.
jue. 10/26:15 pmORD - GSP
Nonstop2h 03mUnited Airlines
mar. 10/710:05 amGSP - ORD
1 stop5h 29mUnited Airlines
Deal found 8/14$212
This Southwest deal was found by Cheapflights users on 8/12. 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.
sáb. 11/18:20 amMDW - GSP
2 stops8h 55mSouthwest
mar. 11/44:45 pmGSP - MDW
1 stop5h 20mSouthwest
Deal found 8/12$213

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Greenville 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 agosto 14, 2025.
Use the filters below to find and compare flights from Illinois to Greenville that are best for you.

Fly from

Illinois

Fly to

Greenville

Route

Depart

Return

Price

ChicagoGreenville

MDW - GSP

MDWGSP

Chicago Midway

mié. 9/17

6:25 am-2:40 pm

1 stop7h 15m

Greenville

mié. 9/24

6:45 pm-11:20 pm

1 stop5h 35m

$189

ChicagoGreenville

MDW - GSP

MDWGSP

Chicago Midway

mié. 10/1

6:25 am-2:40 pm

1 stop7h 15m

Greenville

mié. 10/15

3:00 pm-6:30 pm

1 stop4h 30m

$189

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

mié. 10/1

1:50 pm-7:55 pm

1 stop5h 05m

Greenville

mié. 10/15

6:05 am-11:50 am

1 stop6h 45m

$189

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

mié. 9/24

1:50 pm-7:55 pm

1 stop5h 05m

Greenville

mar. 10/7

6:05 am-11:50 am

1 stop6h 45m

$189

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

sáb. 9/20

11:20 am-2:21 pm

Nonstop2h 01m

Greenville

mar. 9/23

5:34 pm-6:55 pm

Nonstop2h 21m

$195

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

sáb. 10/4

1:50 pm-4:53 pm

Nonstop2h 03m

Greenville

mar. 10/7

9:35 am-10:51 am

Nonstop2h 16m

$195

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

sáb. 11/1

8:48 am-11:47 am

Nonstop1h 59m

Greenville

mar. 11/4

9:10 am-10:24 am

Nonstop2h 14m

$195

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

mar. 9/23

9:25 am-5:23 pm

1 stop6h 58m

Greenville

mié. 9/24

6:05 pm-10:23 pm

1 stop5h 18m

$197

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

mié. 9/17

5:30 am-11:24 am

1 stop4h 54m

Greenville

mié. 9/17

3:30 pm-8:35 pm

1 stop6h 05m

$197

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

mar. 9/9

9:25 am-6:18 pm

1 stop7h 53m

Greenville

mar. 9/16

11:00 am-5:47 pm

1 stop7h 47m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Greenville

Have a flexible travel schedule? Discover the best time to fly to Greenville from Illinois 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 Illinois to Greenville

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Greenville (average of $329). Flying from Illinois to Greenville in March is currently the most expensive (average of $386). 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 IL to GSP?

Find hourly flight availability from Illinois to Greenville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Greenville as you normally would.

Weekly flight availability from Illinois to Greenville

Explore weekly flight availability from Illinois to Greenville. 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 agosto 14, 2025.

The most flights from USIL to GSP are scheduled on a Thursday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Greenville. 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 into for flights to Greenville from Illinois?

    Located just 10.4 mi from the city center, Greenville (GSP) is the airport most travelers will use when flying to Greenville from Illinois.

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

    One-way options have recently been found by users for as low as $95 on Southwest. Other airlines that offer cheap prices include Delta from $99 and American Airlines from $119 one-way.

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

    The most popular route from Illinois to Greenville is Chicago O'Hare Intl - Greenville. You may also consider Chicago Midway - Greenville or Lambert-St Louis - Greenville.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Greenville on time: Republic Airways (80%), GoJet (79%), Air Canada (73%).

  • What are the cheapest flights from Illinois to Greenville?

    Looking at all options, your cheapest flight can be booked for $209. While the most popular route (Chicago O'Hare Intl - Greenville) can be booked for $189 on average our data indicates $319 when flying from Illinois to Greenville.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Greenville 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 Illinois to Greenville?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Greenville (average of $329). Flying from Illinois to Greenville in March is currently the most expensive (average of $386). 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

Traveling to a place near Greenville?

Book flights to Greenville if you plan to visit one of these locations
Simpsonville
Duncan
Seneca
Anderson

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Top 4 airlines flying from Illinois to Greenville

Discover the top 4 airlines that operate flights from Illinois to Greenville. 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$202Average$343FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$209Average$360FlexibilityNo cancel feeOn-time69%
DeltaCheapest$214Average$321FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$278Average$385FlexibilityNo cancel feeOn-time63%

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