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$73+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RDU
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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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 August 18, 2025.

Round-trip from

$127
(CheapOair)

One-way from

$73
(Priceline)

Popular in

March

Cheapest in

November

Average price

$223

Good round-trip deal

$160 or less

Good one-way deal

$121 or less
From Illinois to Raleigh-Durham
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One-way flight from Illinois to Raleigh-Durham
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Highest demand for flights based on searches. 21% potential increase in price ($79 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Illinois to Raleigh-Durham.
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Price to beat on a one-way flight from Illinois to Raleigh-Durham.
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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 August 18, 2025.

This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1011:51 amORD - RDU
1 stop24h 50mFrontier
Sun 10/129:44 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 8/17$127
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/162:41 pmORD - RDU
Nonstop2h 06mFrontier
Sun 10/199:44 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 8/17$129
This Frontier deal was found by Cheapflights users on 8/17. 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 10/172:41 pmORD - RDU
Nonstop2h 06mFrontier
Sun 10/199:44 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 8/17$132
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Sat 10/112:36 pmORD - RDU
Nonstop2h 07mAmerican Airlines
Sat 10/117:08 pmRDU - ORD
Nonstop2h 37mAmerican Airlines
Deal found 8/18$134
This Southwest deal was found by Cheapflights users on 8/17. 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.
Tue 9/233:00 pmMDW - RDU
Nonstop1h 50mSouthwest
Wed 9/246:00 pmRDU - MDW
Nonstop2h 00mSouthwest
Deal found 8/17$139
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 9/237:10 amORD - RDU
Nonstop2h 11mUnited Airlines
Wed 9/2410:00 amRDU - ORD
Nonstop2h 23mUnited Airlines
Deal found 8/17$139
This Gotogate deal was found by Cheapflights users on 8/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:41 pmORD - RDU
Nonstop2h 06mFrontier
Tue 10/1412:30 pmRDU - ORD
1 stop5h 10mFrontier
Deal found 8/16$141
This Gotogate deal was found by Cheapflights users on 8/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/184:56 pmMDW - RDU
1 stop4h 54mFrontier
Mon 9/226:42 pmRDU - MDW
1 stop5h 38mFrontier
Deal found 8/17$143
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1510:25 amORD - RDU
1 stop6h 13mFrontier
Mon 9/226:42 pmRDU - ORD
1 stop6h 28mFrontier
Deal found 8/17$143
This Priceline deal was found by Cheapflights users on 8/15. 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 8/222:01 pmSTL - RDU
1 stop7h 27mFrontier
Sat 8/237:30 amRDU - STL
1 stop7h 03mFrontier
Deal found 8/15$144
This Priceline deal was found by Cheapflights users on 8/17. 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 9/265:15 pmMDW - RDU
1 stop4h 43mFrontier
Sun 9/286:38 pmRDU - MDW
1 stop5h 42mFrontier
Deal found 8/17$144
This Priceline deal was found by Cheapflights users on 8/16. 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 11/711:24 amORD - RDU
1 stop5h 38mFrontier
Sun 11/96:10 amRDU - ORD
1 stop5h 31mFrontier
Deal found 8/16$144

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 August 18, 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

Fri 10/10

11:51 am-1:41 pm

1 stop24h 50m

Raleigh-Durham

Sun 10/12

9:44 pm-11:06 pm

Nonstop2h 22m

$127

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Thu 10/16

2:41 pm-5:47 pm

Nonstop2h 06m

Raleigh-Durham

Sun 10/19

9:44 pm-11:06 pm

Nonstop2h 22m

$129

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Fri 10/17

2:41 pm-5:47 pm

Nonstop2h 06m

Raleigh-Durham

Sun 10/19

9:44 pm-11:06 pm

Nonstop2h 22m

$132

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Sat 10/11

2:36 pm-5:43 pm

Nonstop2h 07m

Raleigh-Durham

Sat 10/11

7:08 pm-8:45 pm

Nonstop2h 37m

$134

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Tue 9/23

10:00 am-12:55 pm

Nonstop1h 55m

Raleigh-Durham

Wed 9/24

6:40 am-7:35 am

Nonstop1h 55m

$139

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Wed 10/29

11:05 am-2:08 pm

Nonstop2h 03m

Raleigh-Durham

Wed 11/5

6:30 am-7:56 am

Nonstop2h 26m

$139

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Wed 10/1

8:45 pm-11:54 pm

Nonstop2h 09m

Raleigh-Durham

Sat 10/4

3:36 pm-5:07 pm

Nonstop2h 31m

$139

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Tue 9/23

11:01 am-2:12 pm

Nonstop2h 11m

Raleigh-Durham

Wed 9/24

10:00 am-11:23 am

Nonstop2h 23m

$139

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Thu 9/11

8:15 am-1:38 pm

1 stop4h 23m

Raleigh-Durham

Thu 9/18

6:38 pm-11:20 pm

1 stop5h 42m

$143

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Mon 9/15

8:15 am-1:38 pm

1 stop4h 23m

Raleigh-Durham

Mon 9/22

6:42 pm-11:20 pm

1 stop5h 38m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

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, August is the cheapest month in which you can book a flight from Illinois to Raleigh (average of $206). Flying from Illinois to Raleigh in March is currently the most expensive (average of $292). 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 August 18, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Raleigh as you normally would.

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 August 18, 2025.

The most flights from USIL to RDU are scheduled on a Monday (30 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (11 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 1h 55m. Frontier provides one of the quickest options available for as low as $139. 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 $73. Users have also found prices from $89 and $161 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 United Airlines (78%), Air New Zealand (72%) or ANA (71%) 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 $88. On average you can expect to pay $187. The most popular route, (Chicago O'Hare Intl - Raleigh-Durham), can usually be booked for $111.

  • 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, August is the cheapest month in which you can book a flight from Illinois to Raleigh (average of $206). Flying from Illinois to Raleigh in March is currently the most expensive (average of $292). 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
Dunn
Cary
Rocky Mount
Garner
Chapel Hill
Smithfield
Goldsboro
Morrisville
Apex
Henderson
Wilson
Danville
Wake Forest
Pinehurst
South Hill
Holly Springs
Oxford

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Alternative routes for Illinois to Raleigh

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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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$62Average$196FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$147Average$399FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$160Average$364FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$169Average$350FlexibilityNo cancel feeOn-time63%

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