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$62+ Cheap flights from Illinois to Raleigh (RDU)

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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RDU
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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Cheap flight deals from Illinois to Raleigh

Cheapest flights from Illinois to Raleigh
Explore the most affordable flight options available from Illinois to Raleigh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/265:06 pm
STL
-
RDU
1 stop6h 15m
Frontier
Fri 7/312:10 pm
RDU
-
STL
1 stop21h 42m
Frontier
Deal found 5/6$121
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/55:27 pm
STL
-
RDU
1 stop5h 57m
Frontier
Fri 6/1212:10 pm
RDU
-
STL
1 stop21h 42m
Frontier
Deal found 5/6$124
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 8/195:33 pm
STL
-
RDU
1 stop5h 56m
Frontier
Tue 9/112:54 pm
RDU
-
STL
1 stop5h 36m
Frontier
Deal found 5/6$126
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Thu 5/286:33 pm
STL
-
RDU
1 stop4h 51m
Frontier
Tue 6/212:54 pm
RDU
-
STL
1 stop5h 39m
Frontier
Deal found 5/8$130
This Trip.com deal was found by Cheapflights users on 5/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:27 pm
STL
-
RDU
1 stop5h 57m
Frontier
Sun 6/712:54 pm
RDU
-
STL
1 stop5h 39m
Frontier
Deal found 5/8$143
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Sat 7/254:52 pm
STL
-
RDU
1 stop6h 33m
Frontier
Sun 8/212:59 pm
RDU
-
STL
1 stop5h 38m
Frontier
Deal found 5/7$150
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/125:06 pm
STL
-
RDU
1 stop6h 15m
Frontier
Sun 6/1412:54 pm
RDU
-
STL
1 stop20h 58m
Frontier
Deal found 5/6$152
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Thu 7/26:31 pm
STL
-
RDU
1 stop12h 32m
Frontier
Mon 8/1010:36 pm
RDU
-
STL
2 stops20h 01m
Frontier
Deal found 5/7$153
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/225:06 pm
STL
-
RDU
2 stops20h 20m
Frontier
Thu 7/212:54 pm
RDU
-
STL
1 stop5h 36m
Frontier
Deal found 5/8$171
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 7/274:52 pm
STL
-
RDU
1 stop18h 02m
Frontier
Mon 8/36:14 pm
RDU
-
STL
2 stops24h 23m
Frontier
Deal found 5/6$180
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 8/74:52 pm
STL
-
RDU
1 stop6h 33m
Frontier
Mon 8/1010:36 pm
RDU
-
STL
2 stops20h 01m
Frontier
Deal found 5/7$183
This Kiwi.com deal was found by Cheapflights users on 5/9. 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.
Tue 6/231:29 pm
ORD
-
RDU
1 stop9h 41m
Frontier
Tue 6/3012:54 pm
RDU
-
ORD
1 stop7h 56m
Frontier
Deal found 5/9$183

Find flight deals from Illinois to Raleigh

Keep the following information in mind while searching for Illinois to Raleigh flight deals. Data was last updated May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$121
(Kiwi.com)

One-way from

$62
(Kiwi.com)

Popular in

January

Cheapest in

October

Average price

$280

Good round-trip deal

$253 or less

Good one-way deal

$118 or less
Provider with most accurate pricing for Chicago (CHI)-Raleigh-Durham flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Raleigh-Durham flights.
Search Deals
From Illinois to Raleigh-Durham
Search Deals
One-way flight from Illinois to Raleigh-Durham
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Raleigh-Durham.
Search Deals
Price to beat on a one-way flight from Illinois to Raleigh-Durham.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Raleigh 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 May 11, 2026.
Use the filters below to find and compare flights from Illinois to Raleigh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Sun 5/24

7:00 am-12:04 pm

1 stop4h 04m

Raleigh-Durham

Sun 5/24

6:30 pm-9:49 pm

1 stop4h 19m

$257

BloomingtonRaleigh

BMI - RDU

BMIRDU

Bloomington-Normal

Fri 8/7

10:01 am-9:51 pm

1 stop10h 50m

Raleigh-Durham

Sun 8/9

12:59 pm-9:11 am

2 stops21h 12m

$257

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Thu 5/28

8:10 am-11:05 am

Nonstop1h 55m

Raleigh-Durham

Mon 6/1

7:45 pm-8:45 pm

Nonstop2h 00m

$262
Quickest round-trip

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Sat 9/5

7:40 am-10:35 am

Nonstop1h 55m

Raleigh-Durham

Mon 9/7

8:25 am-9:15 am

Nonstop1h 50m

$265

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Thu 6/4

6:55 pm-9:45 pm

Nonstop1h 50m

Raleigh-Durham

Sat 6/6

2:00 pm-3:00 pm

Nonstop2h 00m

$265

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Wed 6/3

7:25 am-2:55 pm

1 stop6h 30m

Raleigh-Durham

Wed 6/10

7:40 am-8:35 am

Nonstop1h 55m

$267

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Wed 6/3

6:25 pm-9:37 pm

Nonstop2h 12m

Raleigh-Durham

Mon 6/8

6:00 am-9:36 am

1 stop4h 36m

$271

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Wed 9/16

4:20 pm-7:41 pm

Nonstop2h 21m

Raleigh-Durham

Mon 9/21

5:14 pm-6:41 pm

Nonstop2h 27m

$272

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Mon 6/1

6:55 am-12:03 pm

1 stop4h 08m

Raleigh-Durham

Thu 6/4

7:03 am-8:30 am

Nonstop2h 27m

$275

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Mon 6/1

3:50 pm-10:15 pm

1 stop5h 25m

Raleigh-Durham

Mon 6/8

8:05 am-9:00 am

Nonstop1h 55m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Raleigh

Have a flexible travel schedule? Discover the best time to fly to Raleigh 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 Raleigh

How far ahead should I book a flight from Illinois to Raleigh?

To ensure you get the cheapest price possible for a flight from Illinois to Raleigh, you should look to book at least 89 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Raleigh (average of $27). Flying from Illinois to Raleigh in February is currently the most expensive (average of $98). 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 RDU?

Find hourly flight availability from Illinois to Raleigh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 11, 2026.

A simple way to save on the total cost of your ticket is to fly from Illinois to Raleigh at noon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Illinois to Raleigh. Price data was last updated on May 9, 2026.

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

Weekly flight availability from Illinois to Raleigh

Explore weekly flight availability from Illinois to Raleigh. 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 May 11, 2026.

The most flights from USIL to RDU are scheduled on a Friday (37 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (26 on average).

How much does it cost to fly round-trip from Illinois to Raleigh?

Related info for your journey

Find useful and relevant information for your journey from Illinois to Raleigh. 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 Raleigh from Illinois?

    Raleigh-Durham (RDU), located 11.1 mi from the city center, is the airport you fly into when you book flights from Illinois to Raleigh.

  • How long is the flight from Illinois to Raleigh?

    A quick flight from Illinois to Raleigh can take about 1h 55m. Delta provides one of the quickest options available for as low as $262. Airlines will cover a distance of 631 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 Raleigh one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $49. Users have also found prices from $79 and $87 on Southwest and United Airlines, respectively.

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

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

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

    No one likes to see their flight delayed. When booking a flight from Illinois to Raleigh consider choosing SkyWest Airlines (100%), Envoy Air (75%) or Volaris (75%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Raleigh?

    The cheapest flight price from Illinois to Raleigh is $79. On average you can expect to pay $248. The most popular route, (Chicago O'Hare Intl - Raleigh-Durham), can usually be booked for $199.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to Raleigh (average of $27). Flying from Illinois to Raleigh in February is currently the most expensive (average of $98). 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 Raleigh?

Book flights to Raleigh if you plan to visit one of these locations
Rocky Mount
Smithfield
Garner
Selma
Goldsboro
Danville
Cary
Henderson
Morrisville
Wilson
Pinehurst
Dunn
Chapel Hill
Wake Forest
South Hill
Holly Springs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Raleigh

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Illinois to Raleigh

Discover the top 6 airlines that operate flights from Illinois to Raleigh. 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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$199FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$163Average$344FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$166Average$180FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$168Average$298FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$177Average$395FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$441FlexibilityNo cancel feeOn-timeN/A

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