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Durham

$67+ Cheap flights from Illinois to Durham, NC

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RDU
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Illinois to Durham

Cheapest flights from Illinois to Durham
Explore the most affordable flight options available from Illinois to Durham. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Frontier deal was found by Cheapflights users on 12/14. 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.
Tue 12/301:14 pmORD - RDU
Nonstop2h 05mFrontier
Mon 1/129:25 amRDU - ORD
Nonstop2h 28mFrontier
Deal found 12/14$150
This Super.com deal was found by Cheapflights users on 12/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:14 pmORD - RDU
Nonstop2h 05mFrontier
Thu 1/86:10 amRDU - ORD
1 stop6h 25mFrontier
Deal found 12/14$159
This Super.com deal was found by Cheapflights users on 12/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:14 pmORD - RDU
Nonstop2h 05mFrontier
Fri 1/99:25 amRDU - ORD
Nonstop2h 28mFrontier
Deal found 12/14$168
This Frontier deal was found by Cheapflights users on 12/14. 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.
Tue 12/301:14 pmORD - RDU
Nonstop2h 05mFrontier
Sun 1/119:25 amRDU - ORD
Nonstop2h 28mFrontier
Deal found 12/14$171
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 12/3111:23 amORD - RDU
1 stop20h 05mFrontier
Mon 1/129:25 amRDU - ORD
Nonstop2h 28mFrontier
Deal found 12/14$173
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Thu 12/256:37 pmORD - RDU
Nonstop2h 11mUnited Airlines
Thu 1/18:29 amRDU - ORD
Nonstop2h 26mUnited Airlines
Deal found 12/14$177
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 12/222:15 pmORD - RDU
1 stop5h 37mFrontier
Thu 1/89:11 amRDU - ORD
1 stop6h 11mFrontier
Deal found 12/14$179
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 12/3111:23 amORD - RDU
1 stop20h 05mFrontier
Sat 1/1011:47 amRDU - ORD
1 stop8h 30mFrontier
Deal found 12/14$182
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 12/3111:23 amORD - RDU
1 stop20h 05mFrontier
Sun 1/119:25 amRDU - ORD
Nonstop2h 28mFrontier
Deal found 12/14$194
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 12/301:14 pmORD - RDU
Nonstop2h 05mMultiple Airlines
Sun 1/113:50 pmRDU - ORD
1 stop17h 28mMultiple Airlines
Deal found 12/14$195
This Expedia deal was found by Cheapflights users on 12/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:12 amMDW - RDU
1 stop4h 48mFrontier
Sat 1/108:56 pmRDU - MDW
1 stop27h 03mFrontier
Deal found 12/14$207
This Southwest deal was found by Cheapflights users on 12/14. 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.
Wed 12/249:20 amMDW - RDU
1 stop5h 35mSouthwest
Thu 1/15:30 amRDU - MDW
Nonstop2h 00mSouthwest
Deal found 12/14$222

Find flight deals from Illinois to Durham

Keep the following information in mind while searching for Illinois to Durham flight deals. Data was last updated December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$130
(Priceline)

One-way from

$67
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$287
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 Durham
Search Deals
One-way flight from Illinois to Durham
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Durham 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 December 15, 2025.
Use the filters below to find and compare flights from Illinois to Durham that are best for you.

Fly from

Illinois

Fly to

Durham

Route

Depart

Return

Price

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Wed 1/21

8:22 pm-12:11 am

1 stop26h 49m

Raleigh-Durham

Tue 2/3

2:54 pm-11:33 pm

1 stop9h 39m

$133

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Fri 1/23

8:22 pm-11:56 pm

1 stop26h 34m

Raleigh-Durham

Tue 2/3

2:54 pm-11:33 pm

1 stop9h 39m

$149

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Wed 1/21

8:22 pm-12:11 am

1 stop26h 49m

Raleigh-Durham

Mon 2/2

3:44 pm-11:33 pm

1 stop8h 49m

$154

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Sun 1/25

5:42 pm-9:01 pm

1 stop26h 19m

Raleigh-Durham

Sun 2/1

9:56 pm-11:33 pm

1 stop26h 37m

$154

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Thu 1/8

10:32 pm-10:52 am

2 stops35h 20m

Raleigh-Durham

Thu 1/15

6:10 am-12:08 pm

1 stop6h 58m

$160

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Mon 1/12

6:10 am-5:03 pm

1 stop9h 53m

Raleigh-Durham

Thu 1/15

10:11 pm-9:09 am

1 stop11h 58m

$162

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Fri 1/23

8:22 pm-11:56 pm

1 stop26h 34m

Raleigh-Durham

Wed 2/4

2:15 pm-11:33 pm

1 stop10h 18m

$162

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Thu 1/8

3:43 pm-12:12 am

1 stop7h 29m

Raleigh-Durham

Mon 1/12

2:22 pm-10:34 pm

2 stops33h 12m

$163

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Tue 1/6

5:11 pm-4:52 pm

1 stop22h 41m

Raleigh-Durham

Wed 1/14

6:10 am-10:34 pm

2 stops17h 24m

$164

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Wed 1/14

11:39 am-9:33 am

2 stops20h 54m

Raleigh-Durham

Wed 1/21

7:10 am-12:05 pm

1 stop5h 55m

$174

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Durham

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

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Durham (average of $75). Flying from Illinois to Durham in March is currently the most expensive (average of $230). 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 DU8?

Find hourly flight availability from Illinois to Durham. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Illinois to Durham in the afternoon. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Illinois to Durham. Price data was last updated on December 16, 2024.

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

Related info for your journey

Find useful and relevant information for your journey from Illinois to Durham. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Durham?

    A quick flight from Illinois to Durham can take about 4h 20m. Frontier provides one of the quickest options available for as low as $187. The distance between Illinois and Durham is about 645 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Durham one-way?

    $49 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and Southwest, with prices starting from $69 and $79, respectively.

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

    Most travelers choose Chicago O'Hare Intl - Raleigh-Durham, Chicago Midway - Raleigh-Durham or Lambert-St Louis - Raleigh-Durham when deciding on the best route from Illinois to Durham.

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

    Before booking your flight to Durham from Illinois, check out the most reliable airlines to get you to your destination on time: Air New Zealand (83%), ANA (78%), Royal Jordanian( 78%).

  • What are the cheapest flights from Illinois to Durham?

    On average you can expect to pay $406 for a flight from Illinois to Durham. The cheapest flight overall is $49 while the most popular route, (Chicago O'Hare Intl - Raleigh-Durham) is currently priced at $113.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Illinois to Durham (average of $75). Flying from Illinois to Durham in March is currently the most expensive (average of $230). 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

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Top 4 airlines flying from Illinois to Durham

Discover the top 4 airlines that operate flights from Illinois to Durham. 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$76Average$219FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$161Average$325FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$174Average$327FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$174Average$347FlexibilityNo cancel feeOn-time71%

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