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Durham

$59+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RDU
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/188:17 pm
STL
-
RDU
1 stop20h 38m
Frontier
Wed 2/259:25 pm
RDU
-
STL
1 stop27h 34m
Frontier
Deal found 2/3$131
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/188:17 pm
STL
-
RDU
1 stop20h 38m
Frontier
Tue 2/246:25 am
RDU
-
STL
1 stop25h 26m
Frontier
Deal found 2/3$132
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/188:17 pm
STL
-
RDU
1 stop20h 38m
Frontier
Sun 3/14:30 pm
RDU
-
STL
1 stop15h 21m
Frontier
Deal found 2/3$134
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/238:22 pm
STL
-
RDU
1 stop26h 48m
Frontier
Sun 3/14:30 pm
RDU
-
STL
1 stop15h 21m
Frontier
Deal found 2/3$135
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/188:17 pm
STL
-
RDU
1 stop20h 38m
Frontier
Thu 2/266:55 pm
RDU
-
STL
1 stop12h 56m
Frontier
Deal found 2/3$139
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/219:41 am
STL
-
RDU
1 stop9h 49m
Frontier
Tue 2/249:25 pm
RDU
-
STL
1 stop26h 02m
Frontier
Deal found 2/2$141
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/23:49 pm
STL
-
RDU
1 stop21h 09m
Frontier
Fri 3/66:00 am
RDU
-
STL
1 stop6h 49m
Frontier
Deal found 2/1$151
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/238:22 pm
STL
-
RDU
2 stops19h 49m
Multiple Airlines
Wed 2/252:53 pm
RDU
-
STL
1 stop8h 34m
Multiple Airlines
Deal found 2/3$155
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/2012:16 pm
STL
-
RDU
1 stop10h 55m
Frontier
Mon 3/234:07 pm
RDU
-
STL
1 stop19h 25m
Frontier
Deal found 2/3$157
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/188:17 pm
STL
-
RDU
1 stop20h 38m
Multiple Airlines
Tue 2/246:08 pm
RDU
-
STL
2 stops13h 43m
Multiple Airlines
Deal found 2/3$159
This Frontier deal was found by Cheapflights users on 2/1. 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 4/92:56 pm
MDW
-
RDU
1 stop8h 19m
Frontier
Tue 4/144:07 pm
RDU
-
MDW
1 stop7h 12m
Frontier
Deal found 2/1$160
This Frontier deal was found by Cheapflights users on 2/2. 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 4/98:30 am
ORD
-
RDU
1 stop9h 41m
Frontier
Tue 4/144:07 pm
RDU
-
ORD
1 stop7h 32m
Frontier
Deal found 2/2$160

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$131
(Kiwi.com)

One-way from

$59
(Trip.com)

Popular in

March

Cheapest in

October

Average price

$361
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. 22% potential increase in price ($78 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 February 2026
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 February 3, 2026.
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

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Thu 2/26

6:04 am-2:50 pm

1 stop7h 46m

Raleigh-Durham

Thu 3/5

6:15 am-11:49 am

1 stop6h 34m

$161

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Wed 3/18

11:32 am-8:27 am

1 stop19h 55m

Raleigh-Durham

Sun 3/22

10:38 pm-10:32 am

2 stops36h 54m

$182

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Tue 3/17

11:19 am-9:53 pm

1 stop9h 34m

Raleigh-Durham

Thu 3/19

4:07 pm-10:19 pm

1 stop7h 12m

$189

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Thu 4/23

6:50 pm-12:18 am

1 stop4h 28m

Raleigh-Durham

Sun 4/26

5:38 am-9:42 am

1 stop5h 04m

$197

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Tue 5/19

7:15 am-3:08 pm

1 stop6h 53m

Raleigh-Durham

Fri 5/22

5:20 am-8:18 am

1 stop3h 58m

$197

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Mon 3/30

8:12 pm-5:48 pm

1 stop20h 36m

Raleigh-Durham

Thu 4/30

6:00 am-10:30 am

1 stop5h 30m

$200

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Fri 3/6

1:09 pm-12:11 am

1 stop10h 02m

Raleigh-Durham

Sun 3/8

9:42 pm-1:19 pm

2 stops16h 37m

$200

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Fri 3/13

6:45 pm-9:35 pm

Nonstop1h 50m

Raleigh-Durham

Sat 3/14

7:05 pm-8:10 pm

Nonstop2h 05m

$208

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Thu 3/19

6:45 am-3:19 pm

1 stop7h 34m

Raleigh-Durham

Mon 3/23

6:15 am-11:25 am

1 stop6h 10m

$213

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Tue 4/14

6:15 pm-9:23 pm

Nonstop2h 08m

Raleigh-Durham

Wed 4/15

7:50 pm-11:43 pm

1 stop4h 53m

$225

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

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 $74). Flying from Illinois to Durham in February is currently the most expensive (average of $199). 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 February 3, 2026.

A simple way to save on the total cost of your ticket is to fly from Illinois to Durham in the morning. If you’re flexible enough to do this you can expect to save up to 17% 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 January 31, 2026.

Travelers seeking maximum savings on their Illinois to Durham flight should consider departing on Tuesday afternoons 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 Durham

Explore weekly flight availability from Illinois to Durham. 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 February 3, 2026.

The most flights from USIL to DU8 are scheduled on a Monday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

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 28m. JetBlue provides one of the quickest options available for as low as $197. The distance between Illinois and Durham is about 666 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 Southwest and United Airlines, with prices starting from $79 and $87, 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: PSA Airlines (100%), Envoy Air (77%), Air New Zealand( 77%).

  • What are the cheapest flights from Illinois to Durham?

    On average you can expect to pay $286 for a flight from Illinois to Durham. The cheapest flight overall is $115 while the most popular route, (Chicago O'Hare Intl - Raleigh-Durham) is currently priced at $108.

  • 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 $74). Flying from Illinois to Durham in February is currently the most expensive (average of $199). 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.

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Alternative routes for Illinois to Durham

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 Durham

Discover the top 6 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$67Average$209FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$157Average$327FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$166Average$180FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$171Average$352FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$174Average$323FlexibilityNo cancel feeOn-time63%
DeltaCheapest$223Average$513FlexibilityNo cancel feeOn-timeN/A

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