Illinois

$53+ Cheap flights from Raleigh (RDU) 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
Dec 23 — Dec 301
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Cheap flight deals from Raleigh to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Round-trip from

$117
(Mytrip)

One-way from

$53
(Frontier)
From Raleigh-Durham to Illinois
One-way flight from Raleigh-Durham to Illinois

Find flight deals from Raleigh to Illinois

Cheapest flights from Raleigh to Illinois
Explore the most affordable flight options available from Raleigh to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Frontier deal was found by Cheapflights users on 12/17. 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 12/258:45 pmRDU - MDW
1 stop10h 54mFrontier
Wed 1/18:25 amMDW - RDU
1 stop8h 15mFrontier
Deal found 12/17$198
This Frontier deal was found by Cheapflights users on 12/17. 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.
Tue 12/249:57 pmRDU - ORD
1 stop12h 27mFrontier
Wed 1/110:22 pmORD - RDU
1 stop7h 37mFrontier
Deal found 12/17$228
This CheapOair deal was found by Cheapflights users on 12/18. 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.
Tue 12/3112:10 pmRDU - ORD
1 stop8h 41mMultiple Airlines
Thu 1/210:15 pmORD - RDU
1 stop9h 57mMultiple Airlines
Deal found 12/18$239
This Cheapflightsfares deal was found by Cheapflights users on 12/17. 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.
Tue 12/245:15 amRDU - ORD
1 stop6h 49mSpirit Airlines
Tue 12/3112:09 pmORD - RDU
1 stop10h 00mSpirit Airlines
Deal found 12/17$318
This American Airlines deal was found by Cheapflights users on 12/18. 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.
Sun 12/2911:14 amRDU - MLI
1 stop5h 28mAmerican Airlines
Wed 1/15:45 amMLI - RDU
1 stop5h 14mAmerican Airlines
Deal found 12/18$323
This Delta deal was found by Cheapflights users on 12/18. 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.
Wed 12/255:30 amRDU - ORD
1 stop4h 51mDelta
Wed 1/15:45 amORD - RDU
1 stop4h 45mDelta
Deal found 12/18$326
This Delta deal was found by Cheapflights users on 12/17. 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.
Tue 12/245:30 amRDU - MDW
1 stop4h 20mDelta
Tue 12/315:51 pmMDW - RDU
1 stop4h 40mDelta
Deal found 12/17$326
This Booking.com deal was found by Cheapflights users on 12/17. 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.
Sun 12/229:44 pmRDU - STL
1 stop26h 56mFrontier
Mon 12/305:45 pmSTL - RDU
1 stop26h 12mFrontier
Deal found 12/17$328
This American Airlines deal was found by Cheapflights users on 12/18. 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 12/256:00 amRDU - ORD
Nonstop2h 23mAmerican Airlines
Wed 1/18:40 amORD - RDU
Nonstop2h 19mAmerican Airlines
Deal found 12/18$342
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/249:30 amRDU - ORD
Nonstop2h 31mUnited Airlines
Thu 1/26:35 pmORD - RDU
Nonstop2h 07mUnited Airlines
Deal found 12/17$366
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/223:55 pmRDU - PIA
1 stop7h 03mAmerican Airlines
Fri 12/275:30 amPIA - RDU
1 stop6h 47mAmerican Airlines
Deal found 12/17$374
This Delta deal was found by Cheapflights users on 12/18. 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.
Wed 12/1812:35 pmRDU - STL
1 stop4h 22mDelta
Mon 12/235:55 pmSTL - RDU
1 stop4h 36mDelta
Deal found 12/18$374

Find flights from Raleigh to Illinois within your budget

Customize your flight search to find flights from Raleigh 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 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Sat 1/11

12:50 pm-7:12 am

1 stop19h 22m

Lambert-St Louis

Mon 1/13

5:05 pm-5:30 pm

1 stop23h 25m

$117

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Fri 2/28

8:20 pm-9:25 pm

Nonstop2h 05m

Chicago Midway

Sun 3/2

8:10 pm-11:00 pm

Nonstop1h 50m

$153

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Mon 1/20

4:27 pm-12:39 am

1 stop9h 12m

Chicago O'Hare Intl

Wed 1/22

3:56 pm-1:21 pm

1 stop20h 25m

$154

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Fri 1/17

3:39 pm-8:45 pm

1 stop6h 06m

Chicago O'Hare Intl

Mon 1/20

8:38 am-3:27 pm

1 stop5h 49m

$158

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sun 1/12

6:30 am-8:02 am

Nonstop2h 32m

Chicago O'Hare Intl

Sun 1/19

6:30 am-2:09 pm

1 stop6h 39m

$161

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sat 2/1

3:07 pm-11:29 pm

1 stop9h 22m

Chicago Midway

Sat 2/8

7:30 am-7:58 am

2 stops23h 28m

$161

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 2/25

11:20 am-2:52 pm

1 stop4h 32m

Lambert-St Louis

Tue 2/25

4:20 pm-11:55 pm

1 stop6h 35m

$163

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Fri 1/24

2:26 pm-8:13 pm

1 stop6h 47m

Chicago O'Hare Intl

Sun 1/26

5:11 am-1:21 pm

1 stop7h 10m

$164

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 2/7

9:59 pm-11:31 pm

1 stop26h 32m

Lambert-St Louis

Sun 2/9

4:28 pm-1:21 pm

1 stop19h 53m

$180

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Thu 1/9

6:00 am-7:22 am

Nonstop2h 22m

Chicago O'Hare Intl

Sun 1/12

7:34 pm-10:40 pm

Nonstop2h 06m

$183

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 47 results
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Best time to book a flight from Raleigh to Illinois

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

Travel insights for flights from Raleigh to Illinois

Get recent, data-driven insights about flights from Raleigh to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Raleigh to Illinois (average of $232). Flying from Raleigh to Illinois in June is currently the most expensive (average of $308). 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 RDU to IL?

Find hourly flight availability from Raleigh 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 18, 2024.

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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 18, 2024.
To help decide which airline to fly from Raleigh to Illinois, see what other customers have to say about American Airlines, Spirit Airlines and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,848 reviews
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,552 reviews
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,604 reviews
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Avelo Airlines
7.5
Good
74 reviews
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
3,279 reviews
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Raleigh to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Raleigh to Illinois?

    Most people fly from Raleigh-Durham (RDU) if they book a flight from Raleigh to Illinois. Raleigh-Durham is conveniently located just 11.1 mi from Raleigh’s city center.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $53. Users have also found prices from $85 and $92 on Avelo Airlines and United Airlines, respectively.

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

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

    No one likes to see their flight delayed. When booking a flight from Raleigh to Illinois consider choosing SWISS (100%), Republic Airways (97%) or Royal Jordanian (96%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Raleigh to Illinois?

    Looking at all options, your cheapest flight can be booked for $99. While the most popular route (Raleigh-Durham - Chicago O'Hare Intl) can be booked for $139 on average our data indicates $1,269 when flying from Raleigh to Illinois.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Raleigh to Illinois (average of $232). Flying from Raleigh to Illinois in June is currently the most expensive (average of $308). 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.

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Alternative routes for Raleigh to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Raleigh to Illinois

Discover the top 6 airlines that operate flights from Raleigh 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 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$125FlexibilityNo cancel feeOn-time62%
DeltaCheapest$102Average$365FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$137Average$330FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$141Average$401FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$158Average$303FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$191Average$267FlexibilityNo cancel feeOn-time62%
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