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Durham

$69+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RDU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Illinois to Durham

Keep the following information in mind while searching for Illinois to Durham flight deals. Data was last updated September 11, 2025.

Round-trip from

$108
(Frontier)

One-way from

$69
(Kiwi.com)

Popular in

March

Cheapest in

November

Average price

$217
From Illinois to Durham
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One-way flight from Illinois to 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 September 2025
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Find 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 September 11, 2025.

This Frontier deal was found by Cheapflights users on 9/11. 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.
Sun 11/2312:17 pmORD - RDU
Nonstop2h 03mFrontier
Thu 12/42:45 pmRDU - ORD
Nonstop2h 28mFrontier
Deal found 9/11$108
This Priceline deal was found by Cheapflights users on 9/10. 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.
Thu 10/92:41 pmORD - RDU
Nonstop2h 06mFrontier
Sat 10/115:10 pmRDU - ORD
1 stop7h 49mFrontier
Deal found 9/10$109
This Gotogate deal was found by Cheapflights users on 9/10. 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 10/28:49 pmORD - RDU
1 stop20h 19mFrontier
Mon 10/63:35 pmRDU - ORD
Nonstop2h 16mFrontier
Deal found 9/10$110
This Priceline deal was found by Cheapflights users on 9/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:45 amORD - RDU
1 stop7h 52mFrontier
Mon 10/63:35 pmRDU - ORD
Nonstop2h 16mFrontier
Deal found 9/11$111
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/92:41 pmORD - RDU
Nonstop2h 06mFrontier
Thu 10/166:42 pmRDU - ORD
1 stop6h 44mFrontier
Deal found 9/9$113
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:36 amORD - RDU
Nonstop2h 14mFrontier
Tue 10/712:30 pmRDU - ORD
1 stop5h 10mFrontier
Deal found 9/9$114
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Mon 10/202:41 pmORD - RDU
Nonstop2h 06mFrontier
Sun 10/269:44 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 9/11$115
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:40 amORD - RDU
1 stop7h 30mFrontier
Mon 10/202:27 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 9/9$116
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:10 amMDW - RDU
Nonstop1h 50mSouthwest
Tue 10/146:00 amRDU - MDW
Nonstop1h 55mSouthwest
Deal found 9/9$117
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/259:50 amORD - RDU
Nonstop2h 08mAmerican Airlines
Sat 10/256:23 pmRDU - ORD
Nonstop2h 22mAmerican Airlines
Deal found 9/10$117
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:45 pmORD - RDU
Nonstop2h 08mAmerican Airlines
Sat 10/186:23 pmRDU - ORD
Nonstop2h 22mAmerican Airlines
Deal found 9/11$118
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:55 pmORD - RDU
Nonstop2h 06mFrontier
Sun 11/210:06 pmRDU - ORD
Nonstop2h 22mFrontier
Deal found 9/9$120

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 September 11, 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

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Tue 10/7

10:50 am-2:01 pm

Nonstop2h 11m

Raleigh-Durham

Tue 10/14

12:40 pm-2:03 pm

Nonstop2h 23m

$117

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Sat 10/11

7:10 am-10:28 am

Nonstop2h 18m

Raleigh-Durham

Sat 10/11

5:27 pm-6:50 pm

Nonstop2h 23m

$117

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Wed 10/8

6:20 pm-9:43 pm

Nonstop2h 23m

Raleigh-Durham

Wed 10/15

6:15 am-7:38 am

Nonstop2h 23m

$117

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Fri 10/31

1:55 pm-5:01 pm

Nonstop2h 06m

Raleigh-Durham

Sat 11/15

7:25 am-11:30 am

1 stop5h 05m

$123

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Wed 11/12

1:40 pm-4:25 pm

Nonstop1h 45m

Raleigh-Durham

Thu 11/13

5:45 am-6:50 am

Nonstop2h 05m

$133

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Thu 10/23

9:25 am-12:45 pm

Nonstop2h 20m

Raleigh-Durham

Wed 10/29

10:00 am-11:25 am

Nonstop2h 25m

$133

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Mon 11/24

7:10 am-10:14 am

Nonstop2h 04m

Raleigh-Durham

Wed 12/3

6:30 am-7:56 am

Nonstop2h 26m

$133

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Wed 10/22

7:15 am-10:26 am

Nonstop2h 11m

Raleigh-Durham

Sun 10/26

1:30 pm-2:55 pm

Nonstop2h 25m

$133

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Fri 10/10

7:15 am-10:26 am

Nonstop2h 11m

Raleigh-Durham

Sat 10/11

1:11 pm-2:34 pm

Nonstop2h 23m

$133

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Sat 10/18

10:50 am-2:01 pm

Nonstop2h 11m

Raleigh-Durham

Mon 10/20

6:15 am-7:38 am

Nonstop2h 23m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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, August is the cheapest month in which you can book a flight from Illinois to Durham (average of $206). Flying from Illinois to Durham in March is currently the most expensive (average of $293). 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 September 11, 2025.

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

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 September 11, 2025.

The most flights from USIL to DU8 are scheduled on a Thursday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 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 1h 45m. United Airlines provides one of the quickest options available for as low as $133. The distance between Illinois and Durham is about 631 mi. Most flights are nonstop.

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

    $72 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $80 and $83, 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: United Airlines (83%), Air New Zealand (76%), ANA( 74%).

  • What are the cheapest flights from Illinois to Durham?

    On average you can expect to pay $342 for a flight from Illinois to Durham. The cheapest flight overall is $61 while the most popular route, (Chicago O'Hare Intl - Raleigh-Durham) is currently priced at $74.

  • 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, August is the cheapest month in which you can book a flight from Illinois to Durham (average of $206). Flying from Illinois to Durham in March is currently the most expensive (average of $293). 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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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 5 airlines flying from Illinois to Durham

Discover the top 5 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$64Average$202FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$158Average$378FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$161Average$361FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$163Average$343FlexibilityNo cancel feeOn-time69%
DeltaCheapest$266Average$308FlexibilityNo cancel feeOn-timeN/A

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