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$48+ 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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ORD
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
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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 noviembre 21, 2024.

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 noviembre 21, 2024.

This Frontier deal was found by Cheapflights users on 11/20. 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.
vie. 12/62:13 pmRDU - ORD
1 stop10h 34mFrontier
dom. 12/87:25 amORD - RDU
1 stop7h 52mFrontier
Deal found 11/20$128
This Frontier deal was found by Cheapflights users on 11/19. 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.
vie. 12/62:13 pmRDU - MDW
1 stop11h 07mFrontier
dom. 12/87:15 amMDW - RDU
1 stop8h 02mFrontier
Deal found 11/19$128
This FlightHub deal was found by Cheapflights users on 11/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/115:30 amRDU - ORD
1 stop11h 36mMultiple Airlines
vie. 12/1310:59 amORD - RDU
1 stop23h 51mMultiple Airlines
Deal found 11/20$146
This Priceline deal was found by Cheapflights users on 11/20. 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.
mié. 12/45:30 amRDU - ORD
1 stop11h 36mSpirit Airlines
vie. 12/611:45 amORD - RDU
1 stop9h 51mSpirit Airlines
Deal found 11/20$157
This American Airlines deal was found by Cheapflights users on 11/20. 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.
mié. 12/186:00 amRDU - ORD
Nonstop2h 24mAmerican Airlines
mié. 12/252:20 pmORD - RDU
Nonstop2h 02mAmerican Airlines
Deal found 11/20$177
This Southwest deal was found by Cheapflights users on 11/20. 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.
sáb. 12/148:15 amRDU - MDW
Nonstop2h 05mSouthwest
mar. 12/178:30 amMDW - RDU
Nonstop1h 55mSouthwest
Deal found 11/20$188
This Delta deal was found by Cheapflights users on 11/20. 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.
mar. 12/245:25 pmRDU - ORD
1 stop4h 52mDelta
mar. 12/315:30 pmORD - RDU
1 stop5h 01mDelta
Deal found 11/20$196
This Delta deal was found by Cheapflights users on 11/20. 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.
mar. 12/315:30 amRDU - MDW
1 stop4h 20mDelta
vie. 1/105:07 pmMDW - RDU
1 stop5h 51mDelta
Deal found 11/20$196
This American Airlines deal was found by Cheapflights users on 11/20. 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.
mié. 12/115:00 amRDU - STL
1 stop4h 54mAmerican Airlines
sáb. 12/145:05 amSTL - RDU
1 stop4h 24mAmerican Airlines
Deal found 11/20$218
This eDestinos deal was found by Cheapflights users on 11/20. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/43:36 pmRDU - MDW
1 stop27h 36mMultiple Airlines
dom. 12/85:15 amMDW - RDU
3 stops40h 21mMultiple Airlines
Deal found 11/20$225
This CheapOair deal was found by Cheapflights users on 11/20. 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.
lun. 12/98:58 amRDU - STL
1 stop15h 26mFrontier
mar. 12/105:02 pmSTL - RDU
1 stop24h 21mFrontier
Deal found 11/20$238
This United Airlines deal was found by Cheapflights users on 11/20. 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.
mié. 12/256:15 amRDU - ORD
Nonstop2h 31mUnited Airlines
mié. 1/111:15 amORD - RDU
Nonstop2h 13mUnited Airlines
Deal found 11/20$247

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 2,629,791 searches. Data last updated noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

dom. 2/9

5:20 pm-12:32 am

1 stop8h 12m

Chicago O'Hare Intl

mié. 2/12

6:01 pm-11:59 pm

1 stop4h 58m

$122

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

lun. 1/13

4:27 pm-10:45 pm

1 stop7h 18m

Chicago Midway

jue. 1/16

4:08 pm-12:11 pm

1 stop19h 03m

$126

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

mié. 12/11

5:30 am-4:06 pm

1 stop11h 36m

Chicago O'Hare Intl

vie. 12/13

10:59 am-11:50 am

1 stop23h 51m

$146

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

mié. 12/4

5:30 am-4:06 pm

1 stop11h 36m

Chicago O'Hare Intl

vie. 12/6

11:45 am-10:36 pm

1 stop9h 51m

$157

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

mar. 1/7

6:34 pm-11:27 pm

1 stop5h 53m

Lambert-St Louis

jue. 1/9

3:48 pm-1:21 pm

1 stop20h 33m

$176

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

mié. 12/18

6:00 am-7:24 am

Nonstop2h 24m

Chicago O'Hare Intl

mié. 12/25

2:20 pm-5:22 pm

Nonstop2h 02m

$177

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

mié. 1/1

7:35 am-8:40 am

Nonstop2h 05m

Chicago Midway

mié. 1/8

10:10 am-1:00 pm

Nonstop1h 50m

$178

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

mié. 1/1

5:30 am-9:21 am

1 stop4h 51m

Chicago O'Hare Intl

mié. 1/8

7:05 am-1:36 pm

1 stop5h 31m

$196

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

mar. 12/31

5:30 am-8:50 am

1 stop4h 20m

Chicago Midway

vie. 1/10

5:07 pm-11:58 pm

1 stop5h 51m

$196

RaleighMoline

RDU - MLI

RDUMLI

Raleigh-Durham

mié. 1/15

10:08 am-4:03 pm

1 stop6h 55m

Moline Quad-City

sáb. 1/18

3:28 pm-12:38 am

1 stop8h 10m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 59 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 noviembre 21, 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.

Weekly flight availability from Raleigh to Illinois

Explore weekly flight availability from Raleigh 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 noviembre 21, 2024.

The most flights from RDU to USIL are scheduled on a Thursday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

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 noviembre 21, 2024.
To help decide which airline to fly from Raleigh to Illinois, see what other customers have to say about Frontier, Spirit Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,458 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,759 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Avelo Airlines
7.5
Good
74 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

JetBlue
7.5
Good
3,395 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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 $48. Users have also found prices from $69 and $80 on United Airlines and Spirit Airlines, respectively.

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

    The most popular route from Raleigh to Illinois is Raleigh-Durham - Chicago O'Hare Intl. You may also consider Raleigh-Durham - Chicago Midway or Raleigh-Durham - Lambert-St Louis.

  • 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%), Lufthansa (97%) or ANA (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 $44. While the most popular route (Raleigh-Durham - Chicago O'Hare Intl) can be booked for $139 on average our data indicates $793 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.
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Top 5 airlines flying from Raleigh to Illinois

Discover the top 5 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 2,629,791 searches. Data last updated noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$126FlexibilityNo cancel feeOn-time62%
DeltaCheapest$102Average$357FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$138Average$325FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$142Average$400FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$149Average$277FlexibilityNo cancel feeOn-time63%
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