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$54+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RDU
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
1 adult, Economy
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Find 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 October 13, 2025.

This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:50 pmORD - RDU
Nonstop2h 06mFrontier
Sun 11/910:06 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 10/12$106
This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/811:36 amMDW - RDU
1 stop5h 41mFrontier
Wed 11/126:10 amRDU - MDW
1 stop7h 31mFrontier
Deal found 10/12$108
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:26 amORD - RDU
1 stop4h 28mFrontier
Mon 11/37:05 pmRDU - ORD
1 stop6h 06mFrontier
Deal found 10/13$108
This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:50 pmORD - RDU
Nonstop2h 06mFrontier
Tue 11/186:10 amRDU - ORD
1 stop6h 04mFrontier
Deal found 10/12$109
This Priceline deal was found by Cheapflights users on 10/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/74:56 pmSTL - RDU
1 stop5h 09mFrontier
Sun 11/96:00 amRDU - STL
1 stop6h 09mFrontier
Deal found 10/13$110
This Frontier deal was found by Cheapflights users on 10/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/101:50 pmORD - RDU
Nonstop2h 06mFrontier
Mon 11/1710:06 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 10/11$112
This Booking.com deal was found by Cheapflights users on 10/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/811:36 amMDW - RDU
1 stop5h 41mFrontier
Thu 11/133:38 pmRDU - MDW
1 stop26h 19mFrontier
Deal found 10/12$115
This Booking.com deal was found by Cheapflights users on 10/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2410:51 amORD - RDU
1 stop29h 13mFrontier
Fri 10/3110:06 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 10/12$116
This Trip.com deal was found by Cheapflights users on 10/12. 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.
Thu 11/61:37 pmMDW - RDU
1 stop8h 21mFrontier
Tue 11/116:10 amRDU - MDW
1 stop6h 28mFrontier
Deal found 10/12$117
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/272:41 pmORD - RDU
Nonstop2h 06mFrontier
Fri 10/3110:06 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 10/13$117
This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/232:41 pmORD - RDU
Nonstop2h 06mFrontier
Sun 10/266:42 pmRDU - ORD
1 stop6h 44mFrontier
Deal found 10/12$119
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 11/127:34 pmORD - RDU
1 stop16h 45mMultiple Airlines
Thu 11/1310:06 pmRDU - ORD
Nonstop2h 22mMultiple Airlines
Deal found 10/11$120

Cheap flight deals from Illinois to Raleigh

Keep the following information in mind while searching for Illinois to Raleigh flight deals. Data was last updated October 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$106
(Frontier)

One-way from

$54
(Frontier)

Popular in

March

Cheapest in

October

Average price

$211

Good round-trip deal

$145 or less

Good one-way deal

$109 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. 22% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 13, 2025.
Use the filters below to find and compare flights from Illinois to Raleigh that are best for you.

Fly from

Illinois

Fly to

Raleigh

Route

Depart

Return

Price

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Thu 11/6

3:18 pm-10:58 pm

1 stop6h 40m

Raleigh-Durham

Tue 11/11

6:10 am-11:14 am

1 stop6h 04m

$108

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Fri 11/7

4:56 pm-11:05 pm

1 stop5h 09m

Raleigh-Durham

Sun 11/9

6:00 am-11:09 am

1 stop6h 09m

$110

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Mon 10/27

10:18 am-5:15 pm

1 stop5h 57m

Raleigh-Durham

Fri 10/31

6:10 am-3:57 pm

1 stop10h 47m

$129

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Tue 12/2

11:04 am-2:07 pm

Nonstop2h 03m

Raleigh-Durham

Tue 12/2

5:26 pm-6:55 pm

Nonstop2h 29m

$134

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Wed 11/12

5:18 pm-8:19 pm

Nonstop2h 01m

Raleigh-Durham

Sat 11/15

7:27 pm-9:04 pm

Nonstop2h 37m

$139

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Thu 11/6

11:07 am-6:02 pm

1 stop5h 55m

Raleigh-Durham

Sun 11/9

6:10 am-10:12 am

1 stop5h 02m

$140

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Fri 10/31

2:20 pm-5:23 pm

Nonstop2h 03m

Raleigh-Durham

Wed 11/5

1:30 pm-2:55 pm

Nonstop2h 25m

$149

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Fri 10/31

2:20 pm-5:23 pm

Nonstop2h 03m

Raleigh-Durham

Tue 11/4

10:00 am-11:25 am

Nonstop2h 25m

$149

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Fri 10/31

9:32 am-6:26 pm

1 stop7h 54m

Raleigh-Durham

Sun 11/2

9:35 pm-8:32 am

1 stop11h 57m

$150

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Fri 11/7

4:56 pm-11:05 pm

1 stop5h 09m

Raleigh-Durham

Fri 11/14

11:39 am-4:20 pm

1 stop5h 41m

$150

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 60 results
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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

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Raleigh (average of $64). Flying from Illinois to Raleigh in March is currently the most expensive (average of $228). 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 October 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Illinois to Raleigh in the evening. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the morning.

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 December 16, 2024.

Travelers seeking maximum savings on their Illinois to Raleigh flight should consider departing on Thursday at noon when fares are most often at their lowest. Tuesday evenings 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 October 13, 2025.

The most flights from USIL to RDU are scheduled on a Monday (32 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (26 on average).

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 2h 01m. Frontier provides one of the quickest options available for as low as $139. Airlines will cover a distance of 645 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 Southwest. According to our data, you can fly for as low as $70. Users have also found prices from $70 and $110 on United Airlines and Delta, 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 United Airlines (89%), Air New Zealand (88%) or ANA (83%) 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 $64. On average you can expect to pay $168. The most popular route, (Chicago O'Hare Intl - Raleigh-Durham), can usually be booked for $102.

  • 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, October is the cheapest month in which you can book a flight from Illinois to Raleigh (average of $64). Flying from Illinois to Raleigh in March is currently the most expensive (average of $228). 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
Dunn
Cary
Garner
Chapel Hill
Goldsboro
Selma
Apex
Henderson
Morrisville
Wilson
Danville
Pinehurst
Wake Forest
South Hill
Holly Springs

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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 4 airlines flying from Illinois to Raleigh

Discover the top 4 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 October 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$201FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$159Average$341FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$161Average$360FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$170Average$409FlexibilityNo cancel feeOn-time71%

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