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$90+ 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GSP
Dec 31 — Jan 71
Wed 12/31
Wed 1/7
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 December 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$202
(United Airlines)

One-way from

$90
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$353

Good round-trip deal

$255 or less

Good one-way deal

$168 or less
Provider with most accurate pricing for Chicago (CHI)-Greenville flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Greenville flights.
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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. 1% potential increase in price ($6 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 December 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 December 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:00 amORD - GSP
1 stop8h 10mMultiple Airlines
Mon 12/153:00 pmGSP - ORD
2 stops28h 46mMultiple Airlines
Deal found 11/29$210
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/143:20 pmORD - GSP
1 stop21h 50mMultiple Airlines
Thu 12/1811:33 amGSP - ORD
1 stop8h 29mMultiple Airlines
Deal found 11/29$216
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:09 pmORD - GSP
1 stop6h 14mMultiple Airlines
Thu 12/1811:33 amGSP - ORD
1 stop8h 29mMultiple Airlines
Deal found 11/29$222
This United Airlines deal was found by Cheapflights users on 11/30. 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.
Tue 12/307:50 amORD - GSP
Nonstop2h 06mUnited Airlines
Tue 1/66:35 amGSP - ORD
Nonstop2h 21mUnited Airlines
Deal found 11/30$227
This Kiwi.com deal was found by Cheapflights users on 11/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:09 pmORD - GSP
1 stop26h 06mMultiple Airlines
Mon 1/53:34 pmGSP - ORD
2 stops22h 20mMultiple Airlines
Deal found 11/28$236
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:00 amORD - GSP
1 stop8h 10mMultiple Airlines
Fri 12/128:03 pmGSP - ORD
1 stop18h 13mMultiple Airlines
Deal found 11/29$237
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/143:20 pmORD - GSP
1 stop21h 50mMultiple Airlines
Mon 12/228:03 pmGSP - ORD
1 stop13h 59mMultiple Airlines
Deal found 11/29$240
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/143:20 pmORD - GSP
1 stop21h 50mMultiple Airlines
Sat 12/209:41 pmGSP - ORD
1 stop14h 33mMultiple Airlines
Deal found 11/29$241
This American Airlines deal was found by Cheapflights users on 11/30. 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.
Fri 12/1911:50 pmORD - GSP
Nonstop1h 57mAmerican Airlines
Sun 12/218:07 pmGSP - ORD
Nonstop2h 18mAmerican Airlines
Deal found 11/30$244
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:00 amORD - GSP
1 stop8h 10mMultiple Airlines
Thu 12/115:17 pmGSP - ORD
1 stop18h 48mMultiple Airlines
Deal found 11/29$246
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:09 pmORD - GSP
1 stop6h 14mMultiple Airlines
Mon 12/153:00 pmGSP - ORD
1 stop30h 01mMultiple Airlines
Deal found 11/29$247
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:20 amORD - GSP
1 stop11h 03mMultiple Airlines
Sat 12/209:41 pmGSP - ORD
1 stop14h 33mMultiple Airlines
Deal found 11/29$248

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 December 1, 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

ORD - GSP

ORDGSP

Chicago O'Hare Intl

Sat 1/3

5:50 pm-8:47 pm

Nonstop1h 57m

Greenville

Thu 1/8

5:34 pm-6:48 pm

Nonstop2h 14m

$202

ChicagoGreenville

MDW - GSP

MDWGSP

Chicago Midway

Wed 4/15

6:00 am-1:56 pm

1 stop6h 56m

Greenville

Sat 4/18

5:45 am-9:51 am

1 stop5h 06m

$215

ChicagoGreenville

MDW - GSP

MDWGSP

Chicago Midway

Sat 1/17

11:21 am-4:53 pm

1 stop4h 32m

Greenville

Wed 1/21

7:20 am-12:49 pm

1 stop6h 29m

$215

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

Sat 1/3

5:30 am-11:58 am

1 stop5h 28m

Greenville

Tue 1/13

5:59 pm-10:34 pm

1 stop5h 35m

$215

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

Sat 1/3

5:30 am-11:58 am

1 stop5h 28m

Greenville

Sat 1/10

7:20 am-1:08 pm

1 stop6h 48m

$215

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

Sat 1/3

5:30 am-11:58 am

1 stop5h 28m

Greenville

Tue 1/6

11:30 am-6:28 pm

1 stop7h 58m

$215

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

Thu 5/28

8:55 am-2:10 pm

1 stop4h 15m

Greenville

Tue 6/2

6:00 am-9:39 am

1 stop4h 39m

$222

ChicagoGreenville

MDW - GSP

MDWGSP

Chicago Midway

Tue 4/14

6:00 am-1:56 pm

1 stop6h 56m

Greenville

Sun 4/19

5:45 am-9:51 am

1 stop5h 06m

$222

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

Sat 1/3

5:30 am-11:58 am

1 stop5h 28m

Greenville

Mon 1/12

7:20 am-1:08 pm

1 stop6h 48m

$222

ChicagoGreenville

ORD - GSP

ORDGSP

Chicago O'Hare Intl

Thu 5/28

1:15 pm-9:25 pm

1 stop7h 10m

Greenville

Wed 6/3

6:05 pm-10:43 pm

1 stop5h 38m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Showing 1-10 of 59 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, February is the cheapest month in which you can book a flight from Illinois to Greenville (average of $52). Flying from Illinois to Greenville in April is currently the most expensive (average of $141). 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 December 1, 2025.

When flying from Illinois to Greenville, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 30% versus a flight in the morning.

What is the cheapest day to fly from Illinois to Greenville?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Greenville. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Greenville flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 1, 2025.

The most flights from USIL to GSP are scheduled on a Sunday (26 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (9 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.

  • How long is the flight from Illinois to Greenville?

    For as low as $202, United Airlines can have you in Greenville from Illinois in 1h 57m. Airlines will cover a distance of 577 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $144 on Delta. Other airlines that offer cheap prices include Southwest from $160 and American Airlines from $194 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: GoJet (93%), Lufthansa (88%), Republic Airways (84%).

  • What are the cheapest flights from Illinois to Greenville?

    Looking at all options, your cheapest flight can be booked for $133. While the most popular route (Chicago O'Hare Intl - Greenville) can be booked for $195 on average, our data indicates $272 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, February is the cheapest month in which you can book a flight from Illinois to Greenville (average of $52). Flying from Illinois to Greenville in April is currently the most expensive (average of $141). 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
Greer
Seneca
Anderson

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Top 3 airlines flying from Illinois to Greenville

Discover the top 3 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 December 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$148Average$272FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$202Average$339FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$217Average$355FlexibilityNo cancel feeOn-time69%

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