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$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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This Expedia deal was found by Cheapflights users on 4/26. 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.
Sun 5/1012:53 pm
RDU
-
ORD
Nonstop2h 46m
Frontier
Wed 5/131:59 pm
ORD
-
RDU
1 stop9h 34m
Frontier
Deal found 4/26$194
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Thu 5/1410:11 am
RDU
-
MDW
2 stops12h 51m
Multiple Airlines
Mon 5/1812:04 pm
MDW
-
RDU
1 stop11h 20m
Multiple Airlines
Deal found 4/26$194
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/156:15 am
RDU
-
ORD
1 stop26h 40m
Frontier
Sun 5/175:49 pm
ORD
-
RDU
1 stop12h 35m
Frontier
Deal found 4/23$195
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/137:52 pm
RDU
-
MDW
2 stops27h 10m
Frontier
Wed 5/2712:04 pm
MDW
-
RDU
1 stop11h 29m
Frontier
Deal found 4/26$195
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/1212:59 pm
RDU
-
ORD
1 stop7h 52m
Frontier
Mon 5/186:55 am
ORD
-
RDU
1 stop16h 29m
Frontier
Deal found 4/26$196
This Trip.com deal was found by Cheapflights users on 4/23. 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 5/1410:15 pm
RDU
-
MDW
1 stop18h 42m
Frontier
Sun 5/176:00 am
MDW
-
RDU
1 stop5h 02m
Frontier
Deal found 4/23$196
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/156:15 am
RDU
-
ORD
1 stop26h 40m
Frontier
Mon 5/184:05 pm
ORD
-
RDU
2 stops18h 59m
Frontier
Deal found 4/23$197
This Frontier deal was found by Cheapflights users on 4/23. 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 5/712:53 pm
RDU
-
ORD
Nonstop2h 46m
Frontier
Sun 5/108:39 am
ORD
-
RDU
Nonstop2h 19m
Frontier
Deal found 4/23$198
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Thu 5/2111:47 am
RDU
-
ORD
1 stop12h 28m
Multiple Airlines
Mon 5/256:55 am
ORD
-
RDU
1 stop28h 04m
Multiple Airlines
Deal found 4/27$199
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 6/86:15 am
RDU
-
MDW
1 stop5h 54m
Frontier
Fri 6/1912:04 pm
MDW
-
RDU
1 stop11h 17m
Frontier
Deal found 4/25$199
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/1712:53 pm
RDU
-
ORD
Nonstop2h 46m
Frontier
Tue 5/266:55 am
ORD
-
RDU
1 stop16h 38m
Frontier
Deal found 4/26$200
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 5/1310:16 am
RDU
-
MDW
2 stops12h 46m
Frontier
Tue 6/912:27 pm
MDW
-
RDU
1 stop11h 02m
Frontier
Deal found 4/25$200

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$182
(Frontier)

One-way from

$60
(Trip.com)

Popular in

February

Cheapest in

December

Average price

$276
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. 14% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 April 28, 2026.
Use the filters below to find and compare flights from Durham to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

RaleighChicago

RDU - RFD

RDURFD

Raleigh-Durham

Sat 5/23

9:46 am-10:37 am

1 stop25h 51m

Chicago Greater Rockford

Sun 5/31

11:27 am-8:04 am

2 stops19h 37m

$213
Quickest round-trip

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Mon 9/14

1:15 pm-2:05 pm

Nonstop1h 50m

Chicago Midway

Wed 9/16

8:35 am-11:35 am

Nonstop2h 00m

$232

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Wed 5/27

6:40 pm-7:40 pm

Nonstop2h 00m

Chicago Midway

Wed 6/3

6:05 pm-8:55 pm

Nonstop1h 50m

$237

RaleighChicago

RDU - RFD

RDURFD

Raleigh-Durham

Fri 5/29

2:52 pm-9:21 am

1 stop19h 29m

Chicago Greater Rockford

Sun 5/31

11:27 am-12:24 am

2 stops11h 57m

$257

RaleighMoline

RDU - MLI

RDUMLI

Raleigh-Durham

Wed 7/1

7:09 pm-12:11 am

1 stop6h 02m

Moline Quad-City

Sat 7/4

6:08 am-11:38 am

1 stop4h 30m

$261

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Wed 6/3

11:25 am-3:45 pm

2 stops5h 20m

Chicago Midway

Sat 6/6

6:15 pm-9:10 pm

Nonstop1h 55m

$263

RaleighChicago

RDU - RFD

RDURFD

Raleigh-Durham

Thu 5/28

10:15 pm-7:13 pm

1 stop21h 58m

Chicago Greater Rockford

Mon 6/1

8:03 pm-9:21 am

1 stop12h 18m

$268

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Tue 6/9

7:00 pm-8:00 pm

Nonstop2h 00m

Chicago Midway

Fri 6/12

7:40 am-10:35 am

Nonstop1h 55m

$270

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Wed 5/27

5:20 am-8:39 am

1 stop4h 19m

Chicago O'Hare Intl

Sat 5/30

5:30 am-11:52 am

1 stop5h 22m

$271

RaleighPeoria

RDU - PIA

RDUPIA

Raleigh-Durham

Wed 7/29

6:15 am-12:46 pm

1 stop7h 31m

Greater Peoria

Sat 8/1

8:20 am-2:01 pm

1 stop4h 41m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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 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 April 28, 2026.

A simple way to save on the total cost of your ticket is to fly from Durham to Illinois in the evening. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight at noon.

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 April 25, 2026.

Travelers seeking maximum savings on their Durham to Illinois flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 April 28, 2026.

The most flights from DU8 to USIL are scheduled on a Monday (29 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (8 on average).

How much does it cost to fly round-trip from Durham to Illinois?

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 April 28, 2026.
See what other customers who have flown with Southwest,United Airlines, andJetBlue 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
4,314 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,314 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,675 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,967 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,676 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,970 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 1h 50m. 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 $36. Users have also found prices from $69 and $74 on Southwest 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 SWISS (85%), ANA (84%) or Envoy Air (83%) 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 $118. While the most popular route (Raleigh-Durham - Chicago O'Hare Intl) can be booked for $146 on average, our data indicates $954 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.

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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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$75Average$194FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$307FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$150Average$332FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$160Average$293FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$171Average$395FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$303FlexibilityNo cancel feeOn-time63%

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