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$64+ 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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Durham to Illinois

Keep the following information in mind while searching for Durham to Illinois flight deals. Data was last updated September 14, 2025.

Round-trip from

$129
(Priceline)

One-way from

$64
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$213
From Durham to Illinois
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One-way flight from Durham to Illinois
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Highest demand for flights based on searches. 17% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 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 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 September 14, 2025.

This Priceline deal was found by Cheapflights users on 9/12. 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 10/23:35 pmRDU - ORD
Nonstop2h 16mFrontier
Sat 10/48:00 amORD - RDU
1 stop9h 13mFrontier
Deal found 9/12$129
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 9/265:23 pmRDU - ORD
1 stop7h 36mFrontier
Mon 9/2911:36 amORD - RDU
Nonstop2h 14mFrontier
Deal found 9/12$130
This Trip.com deal was found by Cheapflights users on 9/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/196:42 pmRDU - ORD
1 stop6h 28mFrontier
Mon 9/2211:36 amORD - RDU
Nonstop2h 14mFrontier
Deal found 9/12$131
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/16:45 amRDU - MDW
1 stop10h 13mFrontier
Mon 10/65:33 pmMDW - RDU
1 stop21h 04mFrontier
Deal found 9/13$131
This Trip.com deal was found by Cheapflights users on 9/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/253:35 pmRDU - ORD
Nonstop2h 16mFrontier
Wed 10/111:45 amORD - RDU
1 stop7h 52mFrontier
Deal found 9/12$132
This Southwest deal was found by Cheapflights users on 9/12. 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 10/226:30 pmRDU - MDW
Nonstop2h 00mSouthwest
Wed 10/2910:00 amMDW - RDU
2 stops7h 20mSouthwest
Deal found 9/12$132
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Fri 10/35:27 pmRDU - ORD
Nonstop2h 23mUnited Airlines
Sat 10/41:57 pmORD - RDU
Nonstop2h 09mUnited Airlines
Deal found 9/12$133
This Southwest deal was found by Cheapflights users on 9/12. 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.
Sat 10/256:35 amRDU - MDW
Nonstop1h 55mSouthwest
Mon 10/277:00 pmMDW - RDU
Nonstop1h 50mSouthwest
Deal found 9/12$133
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Sun 9/213:35 pmRDU - ORD
Nonstop2h 16mFrontier
Sun 9/2811:36 amORD - RDU
Nonstop2h 14mFrontier
Deal found 9/12$134
This Frontier deal was found by Cheapflights users on 9/12. 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 9/246:45 amRDU - ORD
1 stop11h 54mFrontier
Thu 10/211:36 amORD - RDU
Nonstop2h 14mFrontier
Deal found 9/12$135
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 11/15:07 pmRDU - MDW
1 stop16h 23mFrontier
Mon 11/39:15 amMDW - RDU
1 stop5h 47mFrontier
Deal found 9/12$135
This Southwest deal was found by Cheapflights users on 9/12. 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 10/221:45 pmRDU - ORD
1 stop8h 45mSouthwest
Wed 10/293:10 pmORD - RDU
1 stop5h 10mSouthwest
Deal found 9/12$137

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 September 14, 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

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Fri 10/31

6:30 am-7:56 am

Nonstop2h 26m

Chicago O'Hare Intl

Wed 11/5

11:05 am-2:08 pm

Nonstop2h 03m

$133

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Wed 10/8

6:15 am-7:38 am

Nonstop2h 23m

Chicago O'Hare Intl

Sun 10/12

7:15 am-10:26 am

Nonstop2h 11m

$133

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sat 10/25

6:10 am-11:50 am

1 stop6h 40m

Chicago O'Hare Intl

Tue 10/28

3:10 pm-9:20 pm

1 stop5h 10m

$137

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sat 10/25

5:27 pm-6:50 pm

Nonstop2h 23m

Chicago O'Hare Intl

Tue 10/28

7:10 am-10:14 am

Nonstop2h 04m

$139

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Thu 11/13

5:21 pm-12:15 am

1 stop7h 54m

Chicago O'Hare Intl

Sun 11/16

1:36 pm-9:11 pm

1 stop6h 35m

$143

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Mon 9/29

6:42 pm-11:20 pm

1 stop5h 38m

Chicago Midway

Thu 10/2

4:56 pm-10:50 pm

1 stop4h 54m

$145

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sat 10/25

7:45 pm-11:15 pm

1 stop4h 30m

Chicago O'Hare Intl

Sun 10/26

7:10 am-10:14 am

Nonstop2h 04m

$159

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sat 10/11

4:55 pm-5:50 pm

Nonstop1h 55m

Chicago Midway

Sat 10/18

9:55 am-12:45 pm

Nonstop1h 50m

$174

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sat 10/11

4:55 pm-5:50 pm

Nonstop1h 55m

Chicago Midway

Wed 10/15

6:05 pm-8:55 pm

Nonstop1h 50m

$174

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Tue 9/30

5:27 pm-6:50 pm

Nonstop2h 23m

Chicago O'Hare Intl

Wed 10/1

10:50 am-2:01 pm

Nonstop2h 11m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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, August is the cheapest month in which you can book a flight from Durham to Illinois (average of $245). Flying from Durham to Illinois in March is currently the most expensive (average of $321). 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 September 14, 2025.

When flying from Durham to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Durham to Illinois

Explore weekly flight availability from Durham to Illinois. 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 14, 2025.

The most flights from DU8 to USIL are scheduled on a Sunday (29 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 on average).

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 September 14, 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
8.0
Very good
4,245 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,956 reviews
Southwest
8.0
Very good
4,245 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,931 reviews
Southwest
8.0
Very good
4,245 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,245 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 26m. 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 United Airlines. According to our data, you can fly for as low as $68. Users have also found prices from $78 and $78 on Frontier and Southwest, 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 SWISS (92%), ANA (85%) or Japan Airlines (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 $77. While the most popular route (Raleigh-Durham - Chicago O'Hare Intl) can be booked for $114 on average, our data indicates $888 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, August is the cheapest month in which you can book a flight from Durham to Illinois (average of $245). Flying from Durham to Illinois in March is currently the most expensive (average of $321). 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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$75Average$185FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$340FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$114Average$279FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$166Average$348FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$169Average$389FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$181Average$320FlexibilityNo cancel feeOn-time63%

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