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$96+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ORD
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
1 adult, Economy
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Cheap 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 enero 27, 2026.

This American Airlines deal was found by Cheapflights users on 1/27. 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. 2/208:21 pm
GSP
-
ORD
Nonstop2h 19m
American Airlines
dom. 2/228:00 am
ORD
-
GSP
Nonstop1h 56m
American Airlines
Deal found 1/27$209
This American Airlines deal was found by Cheapflights users on 1/26. 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. 3/217:40 am
GSP
-
ORD
Nonstop2h 16m
American Airlines
lun. 3/238:50 pm
ORD
-
GSP
Nonstop1h 52m
American Airlines
Deal found 1/26$211
This American Airlines deal was found by Cheapflights users on 1/26. 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. 5/18:19 pm
GSP
-
ORD
Nonstop2h 20m
American Airlines
mié. 5/68:55 pm
ORD
-
GSP
Nonstop2h 03m
American Airlines
Deal found 1/26$212
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
lun. 2/236:22 pm
GSP
-
ORD
1 stop18h 00m
Multiple Airlines
mié. 2/258:16 pm
ORD
-
GSP
1 stop19h 07m
Multiple Airlines
Deal found 1/25$215
This United Airlines deal was found by Cheapflights users on 1/25. 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. 3/76:30 am
GSP
-
ORD
Nonstop2h 23m
United Airlines
mié. 3/111:06 pm
ORD
-
GSP
1 stop5h 22m
United Airlines
Deal found 1/25$219
This American Airlines deal was found by Cheapflights users on 1/27. 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. 6/236:51 pm
GSP
-
ORD
Nonstop2h 24m
American Airlines
lun. 6/296:43 pm
ORD
-
GSP
Nonstop2h 08m
American Airlines
Deal found 1/27$224
This Delta deal was found by Cheapflights users on 1/26. 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. 2/207:40 pm
GSP
-
ORD
1 stop5h 16m
Delta
mar. 2/249:35 am
ORD
-
GSP
1 stop6h 39m
Delta
Deal found 1/26$229
This Delta deal was found by Cheapflights users on 1/27. 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.
jue. 4/238:50 am
GSP
-
MDW
1 stop4h 17m
Delta
dom. 4/266:00 am
MDW
-
GSP
1 stop5h 21m
Delta
Deal found 1/27$229
This Southwest deal was found by Cheapflights users on 1/25. 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. 2/2411:15 am
GSP
-
MDW
2 stops8h 35m
Southwest
mar. 3/31:15 pm
MDW
-
GSP
1 stop5h 35m
Southwest
Deal found 1/25$234
This United Airlines deal was found by Cheapflights users on 1/24. 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. 2/126:30 am
GSP
-
ORD
Nonstop2h 23m
United Airlines
sáb. 2/142:00 pm
ORD
-
GSP
1 stop4h 24m
United Airlines
Deal found 1/24$239
This Delta deal was found by Cheapflights users on 1/26. 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.
jue. 8/276:45 am
GSP
-
MDW
1 stop4h 05m
Delta
dom. 8/306:00 am
MDW
-
GSP
1 stop3h 58m
Delta
Deal found 1/26$254
This Southwest deal was found by Cheapflights users on 1/27. 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. 3/1712:35 pm
GSP
-
MDW
1 stop5h 30m
Southwest
lun. 3/234:05 pm
MDW
-
GSP
1 stop5h 40m
Southwest
Deal found 1/27$260

Find flight deals from Greenville to Illinois

Keep the following information in mind while searching for Greenville to Illinois flight deals. Data was last updated enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$201
(Kiwi.com)

One-way from

$96
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$339

Good round-trip deal

$361 or less

Good one-way deal

$228 or less
Provider with most accurate pricing for Greenville-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Greenville-Chicago (CHI) flights.
Search Deals
From Greenville to Illinois
Search Deals
One-way flight from Greenville to Illinois
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Greenville to Illinois.
Search Deals
Price to beat on a one-way flight from Greenville to Illinois.
Search Deals

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 enero 27, 2026.
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

sáb. 3/7

6:30 am-7:53 am

Nonstop2h 23m

Chicago O'Hare Intl

mié. 3/11

5:55 pm-8:51 pm

Nonstop1h 56m

$209

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

vie. 2/20

8:21 pm-9:40 pm

Nonstop2h 19m

Chicago O'Hare Intl

lun. 2/23

8:50 pm-11:42 pm

Nonstop1h 52m

$209

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

mar. 2/24

6:30 am-7:53 am

Nonstop2h 23m

Chicago O'Hare Intl

mar. 3/3

5:45 pm-8:41 pm

Nonstop1h 56m

$209

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

jue. 3/12

8:17 pm-9:36 pm

Nonstop2h 19m

Chicago O'Hare Intl

lun. 3/16

8:00 am-10:56 am

Nonstop1h 56m

$209

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

mié. 4/1

6:30 am-7:54 am

Nonstop2h 24m

Chicago O'Hare Intl

jue. 4/9

7:00 am-9:56 am

Nonstop1h 56m

$209

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

vie. 5/1

8:19 pm-9:39 pm

Nonstop2h 20m

Chicago O'Hare Intl

mié. 5/6

8:55 pm-11:58 pm

Nonstop2h 03m

$212

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

sáb. 6/27

7:45 pm-11:12 pm

1 stop4h 27m

Chicago O'Hare Intl

mar. 6/30

10:35 am-1:35 pm

Nonstop2h 00m

$219

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

jue. 4/16

7:59 pm-11:59 pm

1 stop5h 00m

Chicago O'Hare Intl

lun. 4/20

5:53 pm-11:56 pm

1 stop5h 03m

$229

GreenvilleChicago

GSP - MDW

GSPMDW

Greenville

mar. 2/24

10:05 am-2:55 pm

1 stop5h 50m

Chicago Midway

mar. 3/3

1:15 pm-7:50 pm

1 stop5h 35m

$229

GreenvilleChicago

GSP - ORD

GSPORD

Greenville

vie. 2/20

7:40 pm-11:56 pm

1 stop5h 16m

Chicago O'Hare Intl

dom. 2/22

5:25 am-11:13 am

1 stop4h 48m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 60 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, January is the cheapest month in which you can book a flight from Greenville to Illinois (average of $58). Flying from Greenville to Illinois in April is currently the most expensive (average of $126). 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 enero 27, 2026.

One of the essential ways to save on airfare from Greenville to Illinois is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 64% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Greenville to Illinois. Price data was last updated on January 24, 2026.

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

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 enero 27, 2026.

The most flights from GSP to USIL are scheduled on a Monday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 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 enero 27, 2026.
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
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,118 reviews
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,205 reviews
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,197 reviews
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 $209, United Airlines can have you in Illinois from Greenville in 2h 19m. 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 American Airlines ($97), Delta ($107), and Southwest ($124).

  • 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 PSA Airlines (100%), ANA (71%) or SkyWest Airlines (69%) 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 $1,260 for a flight from Greenville to Illinois. The cheapest flight overall is $163 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, January is the cheapest month in which you can book a flight from Greenville to Illinois (average of $58). Flying from Greenville to Illinois in April is currently the most expensive (average of $126). 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 3 airlines flying from Greenville to Illinois

Discover the top 3 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 enero 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$107Average$279FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$198Average$348FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$202Average$323FlexibilityNo cancel feeOn-time69%

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