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$55+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
Nov 30 — Dec 71
Sun 11/30
Sun 12/7
1 adult, Economy
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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 October 31, 2025.

This Frontier deal was found by Cheapflights users on 10/30. 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 12/46:00 amRDU - STL
1 stop6h 07mFrontier
Thu 12/1112:04 pmSTL - RDU
1 stop11h 08mFrontier
Deal found 10/30$110
This Booking.com deal was found by Cheapflights users on 10/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/88:14 pmRDU - STL
1 stop27h 19mFrontier
Thu 12/1112:04 pmSTL - RDU
1 stop11h 08mFrontier
Deal found 10/29$121
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/236:00 amRDU - ORD
1 stop17h 24mFrontier
Sat 1/106:11 pmORD - RDU
1 stop16h 47mFrontier
Deal found 10/28$128
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 12/236:00 amRDU - MDW
1 stop17h 12mFrontier
Tue 12/306:14 amMDW - RDU
1 stop16h 59mFrontier
Deal found 10/27$128
This CheapOair deal was found by Cheapflights users on 10/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:05 pmRDU - ORD
Nonstop2h 25mFrontier
Sat 12/61:24 pmORD - RDU
1 stop9h 48mFrontier
Deal found 10/29$129
This Mytrip deal was found by Cheapflights users on 10/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:10 amRDU - MDW
1 stop7h 31mFrontier
Fri 11/149:15 amMDW - RDU
1 stop5h 14mFrontier
Deal found 10/30$129
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/208:30 pmRDU - ORD
1 stop17h 43mFrontier
Mon 11/2412:17 pmORD - RDU
Nonstop2h 03mFrontier
Deal found 10/28$130
This CheapOair deal was found by Cheapflights users on 10/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:14 pmRDU - MDW
1 stop26h 44mFrontier
Mon 12/86:15 amMDW - RDU
1 stop4h 45mFrontier
Deal found 10/29$130
This Frontier deal was found by Cheapflights users on 10/28. 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.
Mon 11/1010:06 pmRDU - ORD
Nonstop2h 22mFrontier
Thu 11/131:50 pmORD - RDU
Nonstop2h 06mFrontier
Deal found 10/28$131
This Expedia deal was found by Cheapflights users on 10/29. 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.
Fri 11/1410:06 pmRDU - ORD
Nonstop2h 22mFrontier
Sun 11/161:50 pmORD - RDU
Nonstop2h 06mFrontier
Deal found 10/29$132
This Frontier deal was found by Cheapflights users on 10/28. 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 11/910:06 pmRDU - ORD
Nonstop2h 22mFrontier
Mon 11/171:50 pmORD - RDU
Nonstop2h 06mFrontier
Deal found 10/28$135
This CheapOair deal was found by Cheapflights users on 10/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/201:58 pmRDU - ORD
Nonstop2h 25mFrontier
Sun 11/2312:17 pmORD - RDU
Nonstop2h 03mFrontier
Deal found 10/30$136

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 October 31, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$110
(Frontier)

One-way from

$55
(Frontier)

Popular in

March

Cheapest in

August

Average price

$229
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. 17% potential increase in price ($59 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 October 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 October 31, 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

Thu 11/13

7:05 pm-12:11 am

1 stop6h 06m

Chicago O'Hare Intl

Fri 11/14

7:34 pm-1:19 pm

1 stop16h 45m

$131

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sat 12/6

5:10 pm-6:15 pm

Nonstop2h 05m

Chicago Midway

Sat 12/13

9:50 am-12:45 pm

Nonstop1h 55m

$139

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Mon 11/17

5:21 pm-9:07 am

1 stop16h 46m

Lambert-St Louis

Wed 11/19

7:24 pm-8:24 am

1 stop12h 00m

$148

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Mon 11/24

6:30 am-7:56 am

Nonstop2h 26m

Chicago O'Hare Intl

Tue 12/2

7:10 am-10:14 am

Nonstop2h 04m

$154

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sat 12/6

1:09 pm-6:06 pm

1 stop5h 57m

Chicago Midway

Sat 12/13

1:14 pm-5:40 pm

1 stop3h 26m

$177

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Thu 1/15

10:00 am-11:26 am

Nonstop2h 26m

Chicago O'Hare Intl

Thu 1/15

6:35 pm-9:46 pm

Nonstop2h 11m

$177

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Thu 12/4

1:40 pm-2:45 pm

Nonstop2h 05m

Chicago Midway

Sun 12/7

7:30 pm-10:20 pm

Nonstop1h 50m

$177

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sat 12/6

5:45 am-1:59 pm

1 stop9h 14m

Chicago Midway

Sat 12/13

6:00 am-4:44 pm

2 stops9h 44m

$177

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sat 12/13

6:00 pm-11:47 pm

1 stop6h 47m

Chicago Midway

Tue 12/16

10:49 am-4:47 pm

1 stop4h 58m

$177

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sat 1/10

6:15 am-7:44 am

Nonstop2h 29m

Chicago O'Hare Intl

Tue 1/13

2:02 pm-5:04 pm

Nonstop2h 02m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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, October is the cheapest month in which you can book a flight from Durham to Illinois (average of $83). Flying from Durham to Illinois in March 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 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 October 31, 2025.

A simple way to save on the total cost of your ticket is to fly from Durham to Illinois in the morning. If you’re flexible enough to do this you can expect to save up to 14% 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. Friday mornings 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 October 31, 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
4,243 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

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
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

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
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

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
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

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 05m. The distance between Durham and Illinois is about 631 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 $65. Users have also found prices from $70 and $70 on American Airlines 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 Emirates (92%), Cathay Pacific (89%) or ANA (88%) 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 $53. While the most popular route (Raleigh-Durham - Chicago O'Hare Intl) can be booked for $62 on average, our data indicates $786 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, October is the cheapest month in which you can book a flight from Durham to Illinois (average of $83). Flying from Durham to Illinois in March 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.

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 October 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$79Average$187FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$346FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$114Average$279FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$168Average$341FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$174Average$396FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$316FlexibilityNo cancel feeOn-time63%

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