$62 Find Cheap Flights from Raleigh 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 Raleigh to Illinois departing on 8/20. 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 Raleigh to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$241
Moline
Moline1 stop$269
Peoria
Peoria1 stop$287
Bloomington
Bloomington1 stop$319
Champaign
Champaign2 stops$286
Springfield
Springfield1 stop$479
St. Louis
St. Louis1 stop$122
Chicago
Chicago1 stop$241
Moline
Moline1 stop$269
Peoria
Peoria1 stop$287
Bloomington
Bloomington1 stop$319
Champaign
Champaign2 stops$286
Springfield
Springfield1 stop$479
St. Louis
St. Louis1 stop$122

Book Cheap Raleigh 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 Raleigh 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 Raleigh to Illinois

Thu, Aug 20 - Mon, Aug 24
Frontier Logo
6:05 am - 5:22 pm
RDU
-
STL
12h 17m
1 stop
Frontier Logo
6:17 pm - 7:36 am
STL
-
RDU
12h 19m
1 stop
$125Frontier
Thu, Aug 27 - Thu, Sep 3
Frontier Logo
6:05 am - 5:22 pm
RDU
-
STL
12h 17m
1 stop
Frontier Logo
6:17 pm - 8:32 am
STL
-
RDU
13h 15m
1 stop
$125Frontier
Wed, Oct 7 - Tue, Oct 13
Multiple Airlines Logo
9:47 pm - 9:40 am
RDU
-
STL
12h 53m
2 stops
Multiple Airlines Logo
10:35 am - 12:17 am
STL
-
RDU
12h 42m
1 stop
$170Multiple Airlines
Thu, Aug 20 - Mon, Aug 24
Multiple Airlines Logo
6:05 am - 5:22 pm
RDU
-
STL
12h 17m
1 stop
Multiple Airlines Logo
6:17 pm - 9:59 am
STL
-
RDU
14h 42m
2 stops
$173Multiple Airlines
Thu, Aug 20 - Sat, Aug 22
Southwest Logo
4:50 pm - 11:20 pm
RDU
-
MDW
7h 30m
2 stops
Southwest Logo
7:40 am - 6:55 pm
MDW
-
RDU
10h 15m
2 stops
$243Southwest
Wed, Nov 4 - Fri, Nov 13
American Airlines Logo
1:48 pm - 3:31 pm
RDU
-
ORD
2h 43mnonstop
American Airlines Logo
1:25 pm - 4:43 pm
ORD
-
RDU
2h 18mnonstop
$244American Airlines
Tue, Sep 29 - Fri, Oct 2
United Airlines Logo
7:05 am - 12:03 pm
RDU
-
ORD
5h 58m
1 stop
United Airlines Logo
10:33 am - 1:49 pm
ORD
-
RDU
2h 16mnonstop
$245United Airlines
Wed, Aug 26 - Fri, Aug 28
United Airlines Logo
6:55 am - 11:59 am
RDU
-
ORD
6h 04m
1 stop
United Airlines Logo
7:10 am - 10:26 am
ORD
-
RDU
2h 16mnonstop
$245United Airlines
Sat, Aug 22 - Mon, Aug 31
Southwest Logo
7:00 am - 11:50 am
RDU
-
MDW
5h 50m
1 stop
Southwest Logo
12:20 pm - 9:50 pm
MDW
-
RDU
8h 30m
2 stops
$246Southwest
Fri, Aug 21 - Mon, Aug 24
American Airlines Logo
8:17 pm - 10:00 pm
RDU
-
ORD
2h 43mnonstop
American Airlines Logo
8:40 pm - 11:42 pm
ORD
-
RDU
2h 02mnonstop
$249American Airlines
Booking Insights

KAYAK's insights & trends for Raleigh to Illinois flights

Get data-powered insights and trends into flights from Raleigh 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 Raleigh 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 Raleigh to Illinois departing in August.

Flight prices are below average for this route right now.

Flights to Illinois from Raleigh usually cost between $252 and $350 in August.
The lowest price found in the past 5 days was $241 on Frontier (Aug 19-Aug 22).

What is the cheapest Raleigh to Illinois flight route?

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

The cheapest ticket to Illinois from Raleigh found in the last 5 days was to Chicago, at $237 round-trip. The most popular route is from Raleigh (RDU) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $237.

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

The average price for all round-trip flights from Raleigh 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 $345 on average. Morning departures are around 10% more expensive 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 $467.

Can I save money by flying with a layover from Raleigh 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 $351, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Raleigh 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 Raleigh to Illinois is October, when tickets cost $236 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $376 and $366 respectively.

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

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

If your flying dates are flexible, you should consider flying to Illinois on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Raleigh to Illinois. For your return ticket, we recommend flying on a Thursday and avoiding Mondays for the best deals.

How far in advance should I book a flight from Raleigh 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 Raleigh 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 Raleigh to Illinois, you should book around 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low season

January

Cheapest flight

$62
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Raleigh to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Raleigh 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 Raleigh to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Raleigh 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 Raleigh 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 Raleigh 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 Raleigh 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 Raleigh 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 Raleigh to the following destinations at these prices or less: Chicago $204 one-way - $340 round-trip

Reviews of the top 5 airlines serving from Raleigh to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Raleigh 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 Raleigh 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.
8.0
SouthwestOverall score based on 4226 reviews
7.5Entertainment
7.0Food
8.6Crew
8.1Boarding
8.0Comfort
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

Great flight. I didn't get a drink because I was asleep whole on the flight.

It was cancelled at the last minute. Left us scrambling. Totally unacceptable

Seats are tight. You pay extra to get to board early so you can sit with your companion. If not, you possibly will end up sitting in a middle seat if you are boarding group C.

Lost cabin pressure and had go back to the originating airport. We were left sitting on the plane for more than 30 minutes with no directions from Southwest on what was going on, other than the app telling us there would be a flight at 12:30 AM. I finally got off and went directly to a SW desk and rebooked for the next day. I understand that malfunctions happen, but SW was totally unprepared to manage the situation and did not serve the passengers. To make matters worse, they took one hour to find my checked bag.

Appreciate that when flight was delayed, our next connection waited for us.

I didn’t have a seat assignment and my seat was very dirty on the flight from Frankfurt to Budapest.

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

Food is terrible. Flight is outdated and seats are not comfy.

Good flight. On time. Boarding and seating was easy. Crew were really friendly, yet professional. Bathroom (by cockpit) was small but serviceable. Some the seats were showing some notable wear & tear, but were comfy. Very happy UA customer. TY! 🤛🏽💗

Boarding was easy. RDU gates can get crowded, be prepared to be patient. Flight was smooth, with excellent service. Pilots really provided a lot of visibility into flight details. Plane and seats were clean and serviceable. TY!

All flights were on time and boarding was issue free

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Got automatically assigned middle seats unless you fork out extra money for a seat assignment, not impressed.

Late by nearly 2 hours due to taking that long to change a tire on the plane.

The boarding on this Air Canada flight from Toronto to Barcelona was a complete mess. The ticket was written under United but they were actually Air Canada flights. We went from one end of the Toronto airport to the complete other side.

It’s love good long way travel!! I always want more give me price down i want ever month travel I miss travel only North Carolina to Thailand in my love her !!

I found the seats ergonomically uncomfortable forcing the body to seat slightly hunched. For a short flight I worked on adjustments but for a longer flight, it would be difficult.

For some unknown reason, my checked bag didn't arrive at the same time. I got to my destination about 30 minutes late (5pm) and my bag was delivered to my hotel at 2:06am.... in the past 4 flights with AA, they been delayed and I've missed connections and my bags. Poor service.

Check in for 5am flight at RDU was hampered by American check in counters being seriously understaffed , was told even supervisor called out. Took so long in line for special services check in that we missed our 5am departure even after arriving at 3:30am. Had to be rescheduled to later flight from Charlotte to St Thomas.

Awfully rude American worker at door when we started boarding flight. Then, walk into a blazing hot airplane with no air conditioning until twenty minutes into the flight. Free entertainment was non existent! My husband, along with the fellow passenger in our row, and I could not get entertainment to work, no WIFI! Really?? Been flying American a long time. Was very disappointed.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

Very below average , plane from Dallas to Toyko was very poor designed plane. I had to sit for 13 hours next to fat man. Really bad seat and entertainment screen sucked

This flight never occurred because AA couldn’t get their act together.

Everything was great except boarding for the flight from Charlotte to Raleigh and seating from New Orleans to Charlotte.

For an over three hour long flight one pack of cookies was not enough.

Everything was good except checking bags . I had paid for two bags but it didn’t show so we had to do it again while people waited and we were struggling to get to our flight

Flight delayed 4 times on a non-stop from BOS to SFO. Then when landed in SFO had to wait for 30 mins for a gate AT 3:30AM.

It's not JetBlues fault but there was a smell on the plane (possibly other travelers) and 3 children behind me that never quit whining. Soccor fans that were very loud. Pilot brought the plane down from high altitude quickly, dropping us hu dress of feet at a time. I've never felt that intense of dropping on other airlines (usually fly Southwest Airlines). But I arrived safely and I'm thankful for that.

The aircraft was fine, it’s was just the service. The flight got canceled several times and that was very inconvenient for my 69 years old mom.

I volunteered to let them put my carry on suitcase in the baggage storage area. But when we landed I was told it was being unloaded IN A DIFFERENT TERMINAL! I had to walk (painful for me) a long way to retrieve my bag and my ride had to move from the waiting area they were in to a totally different one. Not happy.

Terrible. Flight was cancelled due to the weather in the east and sout east(florida). Did not get any compesation of any kind. According to them, it was not under their control so I lost all the money paid for the 2 fairs from Raleigh, NC to Orlando, Fl.

I liked that boarding and take off were timely despite a 15 minute delay due to weather. The pilot communicated with us the entire flight keeping us informed re: turbulance and slight delays on the runway after we landed.

I didn't like the 2 hour delay and then mechanical issue once we were on board.

Realize ahead of a 6:30 am flight that you have a completely flat tire that needs replacement. They should have never boarded everyone. They kept us at the gate with the door closed for ALMOST but not quite 3 hours. The plane had been sitting there from the night before. At the 2 hour mark of sitting there, they came through with a bottle of water and cups. Never offered snacks. Never offered a real apology. People missed connecting flights completely. Absolutely no apology. Just yep you are going to miss your connection completely. I don’t know if you can get to your destination today. The new boy time there was a seemingly heartfelt apology was when they said they were sorry and then fifer everyone an opportunity for a credit card. It was so poor. Lucky for us, our funeral was not the same day as our flight or we would have missed it. All for an avoidable repair that could have been done before we even set foot on the plane.

Boarding and take off from airport was on time. The crew and pilot were great!

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

I liked the price of the flight and the chance to buy a seat with no person seated in the middle seat.. Also the flight was right on time.

Flight got delayed for 3.5 hours, and for the first hour after the departure time there was no update from the gate folks...

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

Over an hour delay in departure but I was notified beforehand. Another delay on tarmac upon arrival at LGA. We ended up departing the plane almost 2 hours later than expected

Attendance were to busy bull shitting to pay attention to the guest, had an attude problem.

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

Information on your arrival and departure airports