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Illinois

$60+ Cheap flights from Durham, NC to Illinois

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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Durham to Illinois

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

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 12/311:05 pmRDU - ORD
1 stop10h 19mFrontier
Tue 1/65:29 pmORD - RDU
1 stop22h 23mFrontier
Deal found 12/14$150
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.
Wed 12/311:05 pmRDU - ORD
1 stop10h 19mFrontier
Mon 1/512:39 pmORD - RDU
1 stop10h 34mFrontier
Deal found 12/14$163
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:05 pmRDU - ORD
1 stop6h 28mMultiple Airlines
Tue 1/64:38 pmORD - RDU
1 stop25h 41mMultiple Airlines
Deal found 12/13$164
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.
Wed 12/246:31 amRDU - ORD
Nonstop2h 29mUnited Airlines
Thu 12/257:30 amORD - RDU
Nonstop2h 02mUnited Airlines
Deal found 12/14$177
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:05 pmRDU - ORD
1 stop10h 19mFrontier
Sun 1/46:10 amORD - RDU
Nonstop2h 05mFrontier
Deal found 12/15$196
This Delta deal was found by Cheapflights users on 12/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:06 pmRDU - ORD
1 stop6h 32mDelta
Thu 1/15:30 amORD - RDU
1 stop5h 26mDelta
Deal found 12/13$197
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 amRDU - ORD
Nonstop2h 30mAmerican Airlines
Thu 12/251:38 pmORD - RDU
Nonstop2h 11mAmerican Airlines
Deal found 12/14$202
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:05 pmRDU - ORD
1 stop6h 28mMultiple Airlines
Mon 1/54:38 pmORD - RDU
2 stops30h 34mMultiple Airlines
Deal found 12/13$210
This American Airlines deal was found by Cheapflights users on 12/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 pmRDU - ORD
Nonstop2h 41mAmerican Airlines
Thu 12/251:38 pmORD - RDU
Nonstop2h 11mAmerican Airlines
Deal found 12/15$213
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.
Wed 12/311:05 pmRDU - MDW
1 stop10h 07mFrontier
Mon 1/56:12 amMDW - RDU
1 stop5h 08mFrontier
Deal found 12/14$214
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:05 pmRDU - MDW
1 stop10h 07mFrontier
Sun 1/42:16 pmMDW - RDU
1 stop16h 57mFrontier
Deal found 12/15$218
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 12/3111:48 amRDU - MDW
1 stop11h 10mFrontier
Tue 1/66:52 amMDW - RDU
1 stop16h 20mFrontier
Deal found 12/14$219

Find flight deals from Durham to Illinois

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

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$116
(Kiwi.com)

One-way from

$60
(Super.com)

Popular in

March

Cheapest in

August

Average price

$257
Provider with most accurate pricing for Raleigh-Durham-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Raleigh-Durham-Chicago (CHI) flights.
Search Deals
From Durham to Illinois
Search Deals
One-way flight from Durham to Illinois
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($67 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 December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Durham to Illinois 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 Durham to Illinois that are best for you.

Fly from

Durham

Fly to

Illinois

Route

Depart

Return

Price

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 1/13

6:10 am-6:51 am

1 stop25h 41m

Lambert-St Louis

Mon 1/19

8:32 pm-11:51 pm

1 stop26h 19m

$132

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 1/23

6:10 am-6:51 am

1 stop25h 41m

Lambert-St Louis

Mon 1/26

5:42 pm-1:59 pm

1 stop19h 17m

$136

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Fri 1/9

10:00 am-5:43 pm

1 stop8h 43m

Chicago O'Hare Intl

Mon 1/12

6:45 am-1:44 pm

1 stop5h 59m

$161

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sat 1/17

6:15 am-7:44 am

Nonstop2h 29m

Chicago O'Hare Intl

Sun 1/18

7:10 am-10:12 am

Nonstop2h 02m

$177

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 1/16

6:10 am-10:34 pm

2 stops17h 24m

Lambert-St Louis

Mon 1/19

8:32 pm-11:51 pm

1 stop26h 19m

$183

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Fri 3/6

6:15 am-11:49 am

1 stop6h 34m

Chicago O'Hare Intl

Mon 3/9

6:04 am-2:45 pm

1 stop7h 41m

$191

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sat 1/17

3:50 pm-7:00 pm

1 stop4h 10m

Chicago Midway

Sun 1/18

10:15 am-5:20 pm

2 stops6h 05m

$202

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Thu 1/15

6:15 am-7:44 am

Nonstop2h 29m

Chicago O'Hare Intl

Sun 1/18

2:02 pm-5:04 pm

Nonstop2h 02m

$229

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Tue 1/13

6:00 am-7:15 am

Nonstop2h 15m

Chicago Midway

Tue 1/20

1:25 pm-4:15 pm

Nonstop1h 50m

$229

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Thu 1/15

6:20 pm-7:25 pm

Nonstop2h 05m

Chicago Midway

Sun 1/18

1:25 pm-4:15 pm

Nonstop1h 50m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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

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

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

Currently, January is the cheapest month in which you can book a flight from Durham to Illinois (average of $61). Flying from Durham to Illinois in March is currently the most expensive (average of $198). 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 DU8 to IL?

Find hourly flight availability from Durham to Illinois. 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 Durham to Illinois at noon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the afternoon.

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

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

Travelers seeking maximum savings on their Durham to Illinois flight should consider departing on Wednesday evenings 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.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated December 15, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Durham to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,008 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,092 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,052 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,080 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Durham to Illinois. 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 Durham to Illinois?

    Departing from Durham to Illinois will take you 2h 29m. The distance between Durham and Illinois is about 645 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $44. Users have also found prices from $69 and $69 on Spirit Airlines and American Airlines, respectively.

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

    The most popular flight routes from Durham to Illinois are Raleigh-Durham - Chicago O'Hare Intl, Raleigh-Durham - Chicago Midway and Raleigh-Durham - Lambert-St Louis.

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

    No one likes to see their flight delayed. When booking a flight from Durham to Illinois consider choosing Cathay Pacific (87%), Royal Jordanian (86%) or ANA (84%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Durham to Illinois?

    Looking at all options, your cheapest flight can be booked for $69. While the most popular route (Raleigh-Durham - Chicago O'Hare Intl) can be booked for $116 on average, our data indicates $816 when flying from Durham to Illinois.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Durham to Illinois (average of $61). Flying from Durham to Illinois in March is currently the most expensive (average of $198). 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 Durham to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Durham to Illinois

Discover the top 6 airlines that operate flights from Durham to Illinois. 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$187FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$81Average$184FlexibilityNo cancel feeOn-time65%
DeltaCheapest$98Average$305FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$160Average$343FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$172Average$400FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$314FlexibilityNo cancel feeOn-time63%

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