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$62+ Cheap flights from Illinois to Raleigh (RDU)

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RDU
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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Cheap flight deals from Illinois to Raleigh

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Raleigh (RDU). 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 January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$120
(CheapOair)

One-way from

$62
(Mytrip)

Popular in

December

Cheapest in

July

Average price

$308

Good round-trip deal

$283 or less

Good one-way deal

$183 or less
Provider with most accurate pricing for Chicago (CHI)-Raleigh-Durham flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Raleigh-Durham flights.
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From Illinois to Raleigh-Durham
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One-way flight from Illinois to Raleigh-Durham
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Highest demand for flights based on searches. 18% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a round-trip flight from Illinois to Raleigh-Durham.
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Price to beat on a one-way flight from Illinois to Raleigh-Durham.
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Find flight deals from Illinois to Raleigh

Cheapest flights from Illinois to Raleigh
Explore the most affordable flight options available from Illinois to Raleigh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This CheapOair deal was found by Cheapflights users on 1/30. 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.
Tue 2/185:20 pmSTL - RDU
1 stop19h 50mFrontier
Wed 2/1910:16 pmRDU - STL
1 stop26h 28mFrontier
Deal found 1/30$120
This Mytrip deal was found by Cheapflights users on 1/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/285:00 amORD - RDU
1 stop7h 12mSpirit Airlines
Mon 3/32:17 pmRDU - ORD
3 stops23h 20mSpirit Airlines
Deal found 1/29$184
This Gotogate deal was found by Cheapflights users on 1/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/118:15 amMDW - RDU
1 stop14h 03mFrontier
Wed 2/1910:16 pmRDU - MDW
1 stop22h 13mFrontier
Deal found 1/29$185
This Frontier deal was found by Cheapflights users on 1/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/107:50 amORD - RDU
1 stop7h 30mFrontier
Fri 2/1410:16 pmRDU - ORD
1 stop11h 59mFrontier
Deal found 1/29$189
This Priceline deal was found by Cheapflights users on 1/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/148:00 amORD - RDU
1 stop10h 48mMultiple Airlines
Sun 5/183:01 pmRDU - ORD
Nonstop2h 20mMultiple Airlines
Deal found 1/29$194
This American Airlines deal was found by Cheapflights users on 1/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/154:40 pmPIA - RDU
1 stop4h 36mAmerican Airlines
Sat 2/226:03 pmRDU - PIA
1 stop5h 06mAmerican Airlines
Deal found 1/30$199
This American Airlines deal was found by Cheapflights users on 1/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/155:00 amMLI - RDU
1 stop4h 29mAmerican Airlines
Sat 2/2210:07 amRDU - MLI
1 stop6h 44mAmerican Airlines
Deal found 1/30$199
This CheapOair deal was found by Cheapflights users on 1/30. 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.
Mon 2/245:20 pmSTL - RDU
1 stop19h 50mMultiple Airlines
Sat 3/110:59 amRDU - STL
1 stop28h 43mMultiple Airlines
Deal found 1/30$206
This American Airlines deal was found by Cheapflights users on 1/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/118:35 amORD - RDU
1 stop5h 30mAmerican Airlines
Tue 2/116:00 pmRDU - ORD
Nonstop2h 32mAmerican Airlines
Deal found 1/29$228
This Southwest deal was found by Cheapflights users on 1/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/196:00 pmSTL - RDU
Nonstop1h 50mSouthwest
Thu 2/201:05 pmRDU - STL
Nonstop2h 15mSouthwest
Deal found 1/29$257
This United Airlines deal was found by Cheapflights users on 1/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/156:50 amPIA - RDU
2 stops12h 31mUnited Airlines
Wed 4/236:05 amRDU - PIA
1 stop5h 07mUnited Airlines
Deal found 1/30$274
This American Airlines deal was found by Cheapflights users on 1/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1711:56 amSTL - RDU
1 stop6h 00mAmerican Airlines
Thu 4/246:00 amRDU - STL
1 stop4h 35mAmerican Airlines
Deal found 1/30$276

Find flights from Illinois to Raleigh within your budget

Customize your flight search to find flights from Illinois to Raleigh 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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Tue 2/18

5:20 pm-2:10 pm

1 stop19h 50m

Raleigh-Durham

Wed 2/19

10:16 pm-11:44 pm

1 stop26h 28m

$120

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Fri 2/28

5:00 am-1:12 pm

1 stop7h 12m

Raleigh-Durham

Mon 3/3

2:17 pm-12:37 pm

3 stops23h 20m

$184

ChicagoRaleigh

MDW - RDU

MDWRDU

Chicago Midway

Tue 2/11

8:15 am-11:18 pm

1 stop14h 03m

Raleigh-Durham

Wed 2/19

10:16 pm-7:29 pm

1 stop22h 13m

$185

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Mon 2/10

7:50 am-4:20 pm

1 stop7h 30m

Raleigh-Durham

Fri 2/14

10:16 pm-9:15 am

1 stop11h 59m

$189

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Wed 5/14

8:00 am-7:48 pm

1 stop10h 48m

Raleigh-Durham

Sun 5/18

3:01 pm-4:21 pm

Nonstop2h 20m

$194

PeoriaRaleigh

PIA - RDU

PIARDU

Greater Peoria

Sat 2/15

4:40 pm-10:16 pm

1 stop4h 36m

Raleigh-Durham

Sat 2/22

6:03 pm-10:09 pm

1 stop5h 06m

$199

MolineRaleigh

MLI - RDU

MLIRDU

Moline Quad-City

Sat 2/15

5:00 am-10:29 am

1 stop4h 29m

Raleigh-Durham

Sat 2/22

10:07 am-3:51 pm

1 stop6h 44m

$199

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Fri 2/14

7:09 pm-4:20 pm

1 stop20h 11m

Raleigh-Durham

Mon 2/17

2:17 pm-2:42 pm

1 stop25h 25m

$201

ChicagoRaleigh

ORD - RDU

ORDRDU

Chicago O'Hare Intl

Tue 2/11

8:35 am-3:05 pm

1 stop5h 30m

Raleigh-Durham

Tue 2/11

6:00 pm-7:32 pm

Nonstop2h 32m

$228

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Wed 2/19

6:00 pm-8:50 pm

Nonstop1h 50m

Raleigh-Durham

Thu 2/20

1:05 pm-2:20 pm

Nonstop2h 15m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 48 results
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Best time to book a flight from Illinois to Raleigh

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

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

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Raleigh (average of $206). Flying from Illinois to Raleigh in March is currently the most expensive (average of $316). 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 IL to RDU?

Find hourly flight availability from Illinois to Raleigh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 30, 2025.

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

Weekly flight availability from Illinois to Raleigh

Explore weekly flight availability from Illinois to Raleigh. 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 January 30, 2025.

The most flights from USIL to RDU are scheduled on a Thursday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Raleigh by month

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

In terms of precipitation, rainfall in Raleigh ranges from 2.9 - 4.7 inches per month. July is typically the wettest month, when rainfall can reach 4.7 in. April is typically the driest time to visit Raleigh when rainfall is around 2.9 in.

Temperature in Raleigh by month

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

If weather is an important factor for your trip to Raleigh, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Raleigh

Get insights into the airlines that provide service to Raleigh. 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 Raleigh. Reviews last updated January 30, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Illinois to Raleigh to help guide your decision. 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
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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.

Alaska Airlines
8.0
Very good
9,688 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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.

Delta
8.0
Very good
8,454 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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.

JetBlue
7.4
Good
3,156 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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.

United Airlines
7.4
Good
8,913 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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 Illinois to Raleigh. 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 into for flights to Raleigh from Illinois?

    Raleigh-Durham (RDU), located 11.1 mi from the city center, is the airport you fly into when you book flights from Illinois to Raleigh.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $62. Users have also found prices from $76 and $102 on Spirit Airlines and JetBlue, respectively.

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

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

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

    No one likes to see their flight delayed. When booking a flight from Illinois to Raleigh consider choosing SkyWest Airlines (100%), Lufthansa (94%) or Republic Airways (90%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Raleigh?

    The cheapest flight price from Illinois to Raleigh is $138. On average you can expect to pay $295. The most popular route, (Chicago O'Hare Intl - Raleigh-Durham), can usually be booked for $109.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Illinois to Raleigh (average of $206). Flying from Illinois to Raleigh in March is currently the most expensive (average of $316). 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

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Morrisville
Dunn
Smithfield
Chapel Hill
Cary
Apex
Wilson
Garner
Henderson
Wake Forest
Goldsboro
Oxford
Rocky Mount
Danville

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Alternative routes for Illinois to Raleigh

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Illinois to Raleigh

Discover the top 5 airlines that operate flights from Illinois to Raleigh. 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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$120FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$133Average$384FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$138Average$325FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$169Average$355FlexibilityNo cancel feeOn-time63%
DeltaCheapest$177Average$349FlexibilityNo cancel feeOn-timeN/A
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