$88 Find Cheap Flights from Greenville to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Greenville to Illinois departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from Greenville to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$269
Moline
Moline1 stop$319
Peoria
Peoria1 stop$319
Bloomington
Bloomington1 stop$319
Champaign
Champaign1 stop$418
St. Louis
St. Louis1 stop$246
Decatur
Decatur2 stops$445
Chicago
Chicago1 stop$269
Moline
Moline1 stop$319
Peoria
Peoria1 stop$319
Bloomington
Bloomington1 stop$319
Champaign
Champaign1 stop$418
St. Louis
St. Louis1 stop$246
Decatur
Decatur2 stops$445

Book Cheap Greenville to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Greenville to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Greenville to Illinois

Fri, Aug 21 - Thu, Aug 27
Multiple Airlines Logo
8:45 pm - 4:11 pm
GSP
-
STL
20h 26m
1 stop
Multiple Airlines Logo
6:17 pm - 7:33 pm
STL
-
GSP
24h 16m
2 stops
$246Multiple Airlines
Tue, Sep 22 - Sat, Sep 26
American Airlines Logo
1:11 pm - 4:48 pm
GSP
-
STL
4h 37m
1 stop
American Airlines Logo
7:27 am - 12:41 pm
STL
-
GSP
4h 14m
1 stop
$259American Airlines
Wed, Aug 26 - Thu, Aug 27
United Airlines Logo
6:30 am - 10:12 am
GSP
-
STL
4h 42m
1 stop
United Airlines Logo
9:30 am - 5:02 pm
STL
-
GSP
6h 32m
1 stop
$259United Airlines
Wed, Nov 11 - Sat, Nov 14
United Airlines Logo
6:30 am - 10:32 am
GSP
-
STL
5h 02m
1 stop
United Airlines Logo
6:00 am - 1:21 pm
STL
-
GSP
6h 21m
1 stop
$259United Airlines
Thu, Aug 20 - Wed, Aug 26
Southwest Logo
4:40 pm - 9:40 pm
GSP
-
STL
6h 00m
1 stop
Southwest Logo
1:40 pm - 7:25 pm
STL
-
GSP
4h 45m
1 stop
$259Southwest
Thu, Sep 10 - Mon, Sep 14
Southwest Logo
7:00 am - 10:15 am
GSP
-
STL
4h 15m
1 stop
Southwest Logo
3:45 pm - 9:40 pm
STL
-
GSP
4h 55m
1 stop
$259Southwest
Thu, Aug 20 - Mon, Aug 24
American Airlines Logo
7:05 pm - 10:40 pm
GSP
-
STL
4h 35m
1 stop
American Airlines Logo
4:54 pm - 11:25 pm
STL
-
GSP
5h 31m
1 stop
$259American Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
3:52 pm - 10:59 pm
GSP
-
ORD
8h 07m
1 stop
Multiple Airlines Logo
7:11 am - 6:30 pm
ORD
-
GSP
10h 19m
1 stop
$269Multiple Airlines
Mon, Aug 31 - Thu, Sep 3
Delta Logo
1:28 pm - 5:53 pm
GSP
-
STL
5h 25m
1 stop
Delta Logo
11:00 am - 4:15 pm
STL
-
GSP
4h 15m
1 stop
$277Delta
Thu, Sep 3 - Mon, Sep 7
Delta Logo
6:55 am - 9:20 am
GSP
-
STL
3h 25m
1 stop
Delta Logo
11:00 am - 4:15 pm
STL
-
GSP
4h 15m
1 stop
$277Delta
Booking Insights

KAYAK's insights & trends for Greenville to Illinois flights

Get data-powered insights and trends into flights from Greenville to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Greenville to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Greenville to Illinois departing in September.

Flight prices are typical for this route right now.

Flights to Illinois from Greenville usually cost between $269 and $394 in September.
The lowest price found in the past 5 days was $269 on Multiple Airlines (Sep 17-Sep 21).

What is the cheapest Greenville to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Greenville found in the last 5 days was to Chicago, at $269 round-trip. The most popular route is from Greenville (GSP) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $269.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Greenville to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $315 on average. Morning departures are around 1% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $936.

Can I save money by flying with a layover from Greenville to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $353, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Greenville to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Greenville to Illinois is February, when tickets cost $282 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $368 and $331 respectively.

What’s the cheapest day of the week to fly from Greenville to Illinois?

The average price of all round-trip flights from Greenville to Illinois clicked on KAYAK for each day over the last 12 months.

When flying from Greenville to Illinois, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to Greenville, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

How far in advance should I book a flight from Greenville to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Greenville to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Greenville to Illinois, you should book around 4 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low season

February

Cheapest flight

$88
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Greenville to Chicago O'Hare Airport

Flights from Greenville to Illinois: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Greenville to Illinois 
Verified travelerFlew with American Airlines
GSP
-
ORD
Apr 2026
Chicago has a enormous airport so be ready to walk and transfer to international flights by train via terminal
EllenFlew with United Airlines
GSP
-
ORD
May 2024
Greenville airport is small, getting through security won't take too long (particularly if you have Precheck). Be prepared to walk for 10-15 minutes from your arrival gate in O'Hare to your next departure gate, if you have one. Sometimes those gates are really close together, but my experience is that they are typically farther apart and require a solid walk.

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Greenville to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Greenville to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Greenville to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Greenville to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Greenville to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Greenville to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Greenville to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Greenville to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Greenville to the following destinations at these prices or less: Chicago $266 one-way - $349 round-trip

Reviews of the top 3 airlines serving from Greenville to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Greenville to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Greenville to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8497 reviews
7.8Comfort
8.1Boarding
8.5Crew
7.2Food
7.8Entertainment
Airline reviews

Delta staff was exceptionally helpful and considerate. However, the first two of three flight legs were delayed making connections tentative and stressful.

6.0 GoodAnonymous, Jul 2026
GSP - DTW
Read more Delta reviews

Delta staff was exceptionally helpful and considerate. However, the first two of three flight legs were delayed making connections tentative and stressful.

It was as good as it could be. Flying is not a pleasant experience these days.

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

Got on the plane and sat there for an hour before departure.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

Cramped seating for me. Luckily it wasn’t a long flight

5 hour delay. They blamed the weather but it was the computer issues they had been dealing with for days.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

The flight crew were very helpful. The seats were very close together. There was barely room to sit without touching the person next to you.

I’m an EP on AA every year for more than a decade but this was a very pleasant and surprising experience. Clean and sizable plane for HOU to CHI. 5 row first class. And excellent food in first class the steak option was really good. Your flight attendants even better. Seat 5A

Gluten free snack options and meals that offer both gluten free and dairy free.

Not a bad flight but a long delay boarding and taking off due to the pilot not arriving on time.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

My seat had a worn out cushion, which made it a bit uncomfortable. Other than that, the flight was excellent.

Take this flight regularly. Every single week same thing. Departure delayed. Make up some time in the air. Land at ORD and then wait for gate in "L" concourse Terminal 3 for 30-40 min-which yields a very delayed final arrival. Plus I get to taxi around and see every runway and drive over the bridge (IFKYK) over the expressway 2-4 times in most cases. Change the sched of incoming plane/work with FAA to improve traffic flow at ORD/change the timing of these flights. Whatever it takes. But do better.

- flight was delayed several hours due to weather (understandable) - flight delayed further and we were told by attendants "we are not sure where the pilots are but they are on their way" as we have to find different pilots for the flight - announcements over the PA were somewhat unprofessional by the attendants, seems they need more training and were not reading off the script. They showed their young age and immaturity in their communications with the passengers. They were not clear and lacked professional communication language. - going from a hub to hub we were also parked at the tarmac at ohare for an additional hour and kept being told "few more minutes". Please just let the passengers know the real wait time instead of hiding the truth. We understand there is traffic and weather delays, but we just want transparency. There are several logistics of our lives that revolve around what the attendants and pilots are sharing with us but they are not being transparant.

Boarding and Delays The boarding process for my American Airlines flight from Copenhagen to Philadelphia was a bit tricky. We experienced a gate change that required a long walk to a new area of the airport. Additionally, boarding was not via a jet bridge; we had to take a shuttle bus to the plane and then carry our luggage up the stairs ourselves. Furthermore, the bag drop didn't open until about 12:20 PM, which was only three hours before our scheduled departure. This meant I couldn't drop my bag off early and had to wait outside of security in order to drop off my bag and use the kiosk. The bag drop self-service kiosks also didn't open until about 12:00 PM when an American Airlines employee unlocked them so that we could print out our boarding passes and bag tags, which further created a backlog. The flight was delayed by over an hour because we had to wait for one of the tires on the plane to be changed. Flight Attendant Professionalism On a positive note, the flight attendant was very professional when handling a passenger who was sitting in the wrong seat. Even though the passenger was persistent and reluctant to move, the flight attendant calmly ensured the assigned passenger could take their seat. Kudos to the flight attendant for keeping his calm and composure, not allowing the issue to escalate, and handling it well under pressure while a line of passengers waited in the aisle to board. In-Flight Service The in-flight service was also fast, prompt, and efficient, although service had to be suspended for the last two hours of the flight due to weather and turbulence, which was outside of the crew's control. Limited Flight Options Please note that American Airlines only operates one flight per day in and out of Copenhagen. This means there are limited options available if your flight is delayed or canceled, which is something to take into consideration when booking.

I will never but. through kayak again. and American Airlines. I will never fly again on. They're both thieves.

Nothing, I wont be flying American Airlines again and will not be recommending anyone to fly American Airlines. It was the worst experience flying I've ever had.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

Everything was excellent and I enjoyed myself. Thank for everything

When my flight was delayed due to weather, I was rebooked to another flight since it showed that I would miss my connection. It was a lot of work to get back onto my originally connecting flight which was also delayed. That part caused a lot of stress and frustration. The ticketing agent at the desk was not very helpful.

Everything you need to know for your flight from Greenville to Illinois

Information on your arrival and departure airports