What is the cheapest airline that flies from Raleigh-Durham to Illinois?

Frontier, United Airlines, and Southwest are the most popular carriers operating from Raleigh-Durham to Illinois

What airlines fly to Illinois?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Illinois from Raleigh according to our data. American Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from Raleigh to Illinois on average per week?

The number of flights available between Raleigh and Illinois is 188 per week as of August 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

How many flights depart from Raleigh to Illinois on average per day?

As of August 2025, there are 26 flights per day flying from Raleigh to Illinois. The most common time of day flights depart is 9:00AM, with 49% of flights taking off at noon.

When did momondo last update prices for flights from Raleigh-Durham Airport to Illinois?

Prices for flights from Raleigh-Durham Airport to Illinois are updated daily.

How many operators does momondo search for flights from Raleigh-Durham Airport to Illinois?

The number of operators available for flights from Raleigh-Durham Airport to Illinois is 6 as of August 2025.

How old do you have to be to fly from Raleigh-Durham Airport to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Raleigh-Durham Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$39 Cheap Flights from Raleigh to Illinois in 2025

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Find the cheapest flights from Raleigh to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

3:35 pm - 4:51 pmRDU-ORD

2h 16mnonstop

2:41 pm - 5:47 pmORD-RDU

2h 06mnonstop

$75Frontier

Find Deal

Sun, Oct 5 - Thu, Oct 9

3:35 pm - 4:51 pmRDU-ORD

2h 16mnonstop

11:36 am - 2:50 pmORD-RDU

2h 14mnonstop

$78Frontier

Find Deal

Thu, Sep 25 - Sun, Sep 28

8:51 am - 10:08 amRDU-ORD

2h 17mnonstop

11:55 am - 3:06 pmORD-RDU

2h 11mnonstop

$134American Airlines

Find Deal

Sat, Oct 4 - Sat, Oct 4

2:38 pm - 4:05 pmRDU-ORD

2h 27mnonstop

8:30 am - 11:42 amORD-RDU

2h 12mnonstop

$139American Airlines

Find Deal

Sat, Oct 11 - Sat, Oct 18

6:00 am - 6:55 amRDU-MDW

1h 55mnonstop

10:10 am - 1:00 pmMDW-RDU

1h 50mnonstop

$139Southwest

Find Deal

Tue, Oct 7 - Wed, Oct 8

5:27 pm - 6:50 pmRDU-ORD

2h 23mnonstop

7:22 am - 10:42 amORD-RDU

2h 20mnonstop

$158United Airlines

Find Deal

Thu, Sep 25 - Sat, Sep 27

6:05 am - 7:00 amRDU-MDW

1h 55mnonstop

6:05 pm - 9:05 pmMDW-RDU

2h 00mnonstop

$158Southwest

Find Deal

Sun, Sep 28 - Wed, Oct 1

5:35 pm - 6:55 pmRDU-ORD

2h 20mnonstop

6:35 pm - 9:58 pmORD-RDU

2h 23mnonstop

$169United Airlines

Find Deal

Tue, Sep 2 - Sat, Sep 6

5:44 am - 8:40 amRDU-MDW

3h 56m1 stop

6:35 pm - 10:58 pmMDW-RDU

3h 23m1 stop

$197Delta

Find Deal

Thu, Oct 23 - Fri, Oct 31

10:50 am - 2:35 pmRDU-STL

4h 45m1 stop

9:19 am - 4:08 pmSTL-RDU

5h 49m1 stop

$199Delta

Find Deal

Tue, Sep 23 - Tue, Sep 30

American Airlines flights from Raleigh to Illinois

Our best American Airlines deals on Raleigh to Illinois flight tickets

American Airlines

Oct 4

RDU8:51 amRaleigh-Durham

2h 17m

ORD10:08 amChicago O'Hare Intl

Oct 4

ORD11:55 amChicago O'Hare Intl

2h 11m

RDU3:06 pmRaleigh-Durham

$134

Find similar

American Airlines

Oct 11

RDU2:38 pmRaleigh-Durham

2h 27m

ORD4:05 pmChicago O'Hare Intl

Oct 18

ORD8:30 amChicago O'Hare Intl

2h 12m

RDU11:42 amRaleigh-Durham

$139

Find similar

American Airlines

Sep 8

RDU5:16 pmRaleigh-Durham

6h 51m

1 stop

STL11:07 pmLambert-St Louis

Sep 13

STL7:23 amLambert-St Louis

6h 43m

1 stop

RDU3:06 pmRaleigh-Durham

$207

Find similar

Frontier flights from Raleigh to Illinois

Our best Frontier deals on Raleigh to Illinois flight tickets

Frontier

Oct 5

RDU3:35 pmRaleigh-Durham

2h 16m

ORD4:51 pmChicago O'Hare Intl

Oct 9

ORD2:41 pmChicago O'Hare Intl

2h 06m

RDU5:47 pmRaleigh-Durham

$75

Find similar

Frontier

Sep 25

RDU3:35 pmRaleigh-Durham

2h 16m

ORD4:51 pmChicago O'Hare Intl

Sep 28

ORD11:36 amChicago O'Hare Intl

2h 14m

RDU2:50 pmRaleigh-Durham

$78

Find similar

Frontier

Sep 21

RDU3:35 pmRaleigh-Durham

2h 16m

ORD4:51 pmChicago O'Hare Intl

Sep 22

ORD11:36 amChicago O'Hare Intl

2h 14m

RDU2:50 pmRaleigh-Durham

$110

Find similar

Fly from

Fly to

Route

Depart

Return

Price

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sun 10/5

3:35 pm-4:51 pm

Nonstop2h 16m

Chicago O'Hare Intl

Thu 10/9

2:41 pm-5:47 pm

Nonstop2h 06m

$75

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Thu 9/25

3:35 pm-4:51 pm

Nonstop2h 16m

Chicago O'Hare Intl

Sun 9/28

11:36 am-2:50 pm

Nonstop2h 14m

$78

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sat 10/4

8:51 am-10:08 am

Nonstop2h 17m

Chicago O'Hare Intl

Sat 10/4

11:55 am-3:06 pm

Nonstop2h 11m

$134

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Sat 10/11

2:38 pm-4:05 pm

Nonstop2h 27m

Chicago O'Hare Intl

Sat 10/18

8:30 am-11:42 am

Nonstop2h 12m

$139

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Tue 10/7

6:00 am-6:55 am

Nonstop1h 55m

Chicago Midway

Wed 10/8

10:10 am-1:00 pm

Nonstop1h 50m

$139

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Thu 9/25

5:27 pm-6:50 pm

Nonstop2h 23m

Chicago O'Hare Intl

Sat 9/27

7:22 am-10:42 am

Nonstop2h 20m

$158

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Sun 9/28

6:05 am-7:00 am

Nonstop1h 55m

Chicago Midway

Wed 10/1

6:05 pm-9:05 pm

Nonstop2h 00m

$158

RaleighChicago

RDU - ORD

RDUORD

Raleigh-Durham

Tue 9/2

5:35 pm-6:55 pm

Nonstop2h 20m

Chicago O'Hare Intl

Sat 9/6

6:35 pm-9:58 pm

Nonstop2h 23m

$169

RaleighChicago

RDU - MDW

RDUMDW

Raleigh-Durham

Thu 10/23

5:44 am-8:40 am

1 stop3h 56m

Chicago Midway

Fri 10/31

6:35 pm-10:58 pm

1 stop3h 23m

$197

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 9/23

10:50 am-2:35 pm

1 stop4h 45m

Lambert-St Louis

Tue 9/30

9:19 am-4:08 pm

1 stop5h 49m

$199

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Raleigh to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Raleigh is in August. Flight prices, which tend to average around $211, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $213.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Raleigh to Illinois is on a Thursday when prices can be found for as low as $358. Flights from Raleigh to Illinois on a Sunday will generally be more expensive and average around $555. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Raleigh to Illinois during this time can be as low as $279. Flights at noon are often more expensive with an average ticket price of $529.

What is the cheapest Raleigh-Durham to Illinois flight route?

Fly from Raleigh-Durham to Chicago O'Hare Intl for the best Raleigh-Durham - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Raleigh when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $296 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Raleigh for as low as $221 on momondo.

What cabin class options are available on Raleigh-Durham to Illinois flights?

There are 4 cabin classes available to choose from on Raleigh-Durham to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Raleigh to Illinois flights?

No. A direct flight is the cheapest option for a flight between Raleigh to Illinois.

Cheap Raleigh to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Raleigh to Illinois

Best Price Found	$39
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Illinois	3 airports

The best one-way flight to Illinois from Raleigh in the past 72 hours is $39. The best round-trip flight deal from Raleigh to Illinois found on momondo in the last 72 hours is $75.

The fastest flight from Raleigh to Illinois takes 1h 55m

Direct flights go from Raleigh to Illinois every day.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Raleigh-Durham Airport to Illinois?
Prices for flights from Raleigh-Durham Airport to Illinois are updated daily.
How many operators does momondo search for flights from Raleigh-Durham Airport to Illinois?
The number of operators available for flights from Raleigh-Durham Airport to Illinois is 6 as of August 2025.
How old do you have to be to fly from Raleigh-Durham Airport to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Raleigh-Durham Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Raleigh to Illinois?
Based on momondo bookings for flights between Raleigh and Illinois, the leading plane model is Boeing 737-800, making up 18.10% of the total bookings. Other popular models include Embraer 175 with 14.66%, Boeing 737-900 with 14.31%, and Boeing 737 MAX 9 with 10.63%.

Best airlines flying from Raleigh to Illinois

Compare and see reviews for airlines that fly from Raleigh to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $53	Free Cancellation	Rating 5.8 3,219 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $98	Free Cancellation	Rating 6.3 8,045 reviews	Search Spirit Airlines flights
Delta	PriceFrom $98	Free Cancellation	Rating 8.0 7,980 reviews	Search Delta flights
United Airlines	PriceFrom $154	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
American Airlines	PriceFrom $157	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $170	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Raleigh to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Raleigh to Illinois for you.

Can I find flights from Raleigh to Illinois with flexible booking policies on momondo?

Flights from Raleigh to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Raleigh to Illinois?

Once you have performed a search for Raleigh to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Raleigh to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Raleigh. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Illinois

Popular cities in Illinois

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Cheap flights from Raleigh to Illinois from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Raleigh to Illinois departing on 9/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Raleigh to Illinois

Cheap round-trip flights

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Cheap last minute flights

Cheap direct flights

American Airlines flights from Raleigh to Illinois

Our best American Airlines deals on Raleigh to Illinois flight tickets

Frontier flights from Raleigh to Illinois

Our best Frontier deals on Raleigh to Illinois flight tickets

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Use the filters below to find and compare flights from Raleigh to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from Raleigh to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Raleigh to Illinois during this time can be as low as $279. Flights at noon are often more expensive with an average ticket price of $529.

What is the cheapest Raleigh-Durham to Illinois flight route?

Fly from Raleigh-Durham to Chicago O'Hare Intl for the best Raleigh-Durham - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on Raleigh-Durham to Illinois flights?

There are 4 cabin classes available to choose from on Raleigh-Durham to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Raleigh to Illinois flights?

No. A direct flight is the cheapest option for a flight between Raleigh to Illinois.

What is the cheapest airline that flies from Raleigh-Durham to Illinois?

Frontier, United Airlines, and Southwest are the most popular carriers operating from Raleigh-Durham to Illinois

What airlines fly to Illinois?

How many flights depart from Raleigh to Illinois on average per day?

As of August 2025, there are 26 flights per day flying from Raleigh to Illinois. The most common time of day flights depart is 9:00AM, with 49% of flights taking off at noon.

How many flights depart from Raleigh to Illinois on average per week?

The number of flights available between Raleigh and Illinois is 188 per week as of August 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

Cheap Raleigh to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Raleigh to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Raleigh-Durham Airport to Illinois?

How many operators does momondo search for flights from Raleigh-Durham Airport to Illinois?

How old do you have to be to fly from Raleigh-Durham Airport to Illinois?

What documentation or ID do you need to fly to Illinois?

What is the most popular plane model from Raleigh to Illinois?

Best airlines flying from Raleigh to Illinois

Compare and see reviews for airlines that fly from Raleigh to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Raleigh to Illinois?

Can I find flights from Raleigh to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from Raleigh to Illinois?

I’m not ready to book a flight from Raleigh to Illinois right now. Can momondo alert me if prices change?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo