HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$99+ Cheap flights from Chattanooga (CHA) 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
CHA — ORD
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chattanooga to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Chattanooga to Illinois

Keep the following information in mind while searching for Chattanooga to Illinois flight deals. Data was last updated July 29, 2025.

Round-trip from

$189
(American Airlines)

One-way from

$99
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$295

Good round-trip deal

$327 or less

Good one-way deal

$234 or less
From Chattanooga Lovell Field to Illinois
Search Deals
One-way flight from Chattanooga Lovell Field to Illinois
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Chattanooga Lovell Field to Illinois.
Search Deals
Price to beat on a one-way flight from Chattanooga Lovell Field to Illinois.
Search Deals

Find flight deals from Chattanooga to Illinois

Cheapest flights from Chattanooga to Illinois
Explore the most affordable flight options available from Chattanooga to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:25 amCHA - ORD
Nonstop2h 02mAmerican Airlines
Mon 11/173:06 pmORD - CHA
Nonstop1h 48mAmerican Airlines
Deal found 7/27$189
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 10/308:45 amCHA - ORD
Nonstop2h 04mUnited Airlines
Sun 11/28:45 amORD - CHA
Nonstop1h 48mUnited Airlines
Deal found 7/28$194
This Delta deal was found by Cheapflights users on 7/28. 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.
Sat 10/46:31 pmCHA - MDW
1 stop3h 39mDelta
Tue 10/710:35 amMDW - CHA
1 stop3h 44mDelta
Deal found 7/28$209
This Delta deal was found by Cheapflights users on 7/28. 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.
Fri 9/128:13 pmCHA - ORD
1 stop4h 41mDelta
Wed 9/249:10 amORD - CHA
1 stop3h 54mDelta
Deal found 7/28$209
This Mytrip deal was found by Cheapflights users on 7/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/184:50 pmCHA - ORD
2 stops24h 20mSpirit Airlines
Fri 8/226:56 amORD - CHA
1 stop7h 59mSpirit Airlines
Deal found 7/27$213
This Delta deal was found by Cheapflights users on 7/28. 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 8/276:40 pmCHA - STL
1 stop4h 22mDelta
Sat 8/306:00 amSTL - CHA
1 stop5h 31mDelta
Deal found 7/28$214
This American Airlines deal was found by Cheapflights users on 7/28. 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 8/309:00 amCHA - STL
2 stops9h 09mAmerican Airlines
Wed 9/31:21 pmSTL - CHA
1 stop7h 17mAmerican Airlines
Deal found 7/28$219
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:15 pmCHA - PIA
1 stop7h 08mAmerican Airlines
Sat 9/205:11 pmPIA - CHA
1 stop4h 55mAmerican Airlines
Deal found 7/27$229
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:12 pmCHA - MLI
1 stop5h 49mAmerican Airlines
Sat 8/305:50 pmMLI - CHA
1 stop5h 34mAmerican Airlines
Deal found 7/27$249
This Mytrip deal was found by Cheapflights users on 7/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:01 pmCHA - RFD
1 stop12h 59mAllegiant Air
Sun 11/910:16 amRFD - CHA
1 stop5h 43mAllegiant Air
Deal found 7/26$274
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:31 pmCHA - MLI
1 stop5h 11mDelta
Sat 9/204:59 pmMLI - CHA
1 stop5h 36mDelta
Deal found 7/27$279
This United Airlines deal was found by Cheapflights users on 7/28. 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 7/297:01 amCHA - PIA
1 stop4h 18mUnited Airlines
Sat 8/25:25 pmPIA - CHA
1 stop4h 34mUnited Airlines
Deal found 7/28$349

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chattanooga 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 July 29, 2025.
Use the filters below to find and compare flights from Chattanooga to Illinois that are best for you.

Fly from

Chattanooga

Fly to

Illinois

Route

Depart

Return

Price

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Thu 11/13

6:25 am-7:27 am

Nonstop2h 02m

Chicago O'Hare Intl

Mon 11/17

3:06 pm-5:54 pm

Nonstop1h 48m

$189

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Thu 10/30

8:45 am-9:49 am

Nonstop2h 04m

Chicago O'Hare Intl

Sun 11/2

8:45 am-11:33 am

Nonstop1h 48m

$194

ChattanoogaChicago

CHA - MDW

CHAMDW

Chattanooga Lovell Field

Sat 10/4

6:31 pm-9:10 pm

1 stop3h 39m

Chicago Midway

Tue 10/7

10:35 am-3:19 pm

1 stop3h 44m

$209

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Fri 9/12

8:13 pm-11:54 pm

1 stop4h 41m

Chicago O'Hare Intl

Wed 9/24

9:10 am-2:04 pm

1 stop3h 54m

$209

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Mon 8/18

4:50 pm-4:10 pm

2 stops24h 20m

Chicago O'Hare Intl

Fri 8/22

6:56 am-3:55 pm

1 stop7h 59m

$213

ChattanoogaSt. Louis

CHA - STL

CHASTL

Chattanooga Lovell Field

Wed 8/27

6:40 pm-10:02 pm

1 stop4h 22m

Lambert-St Louis

Sat 8/30

6:00 am-12:31 pm

1 stop5h 31m

$214

ChattanoogaSt. Louis

CHA - STL

CHASTL

Chattanooga Lovell Field

Sat 8/30

9:00 am-5:09 pm

2 stops9h 09m

Lambert-St Louis

Wed 9/3

1:21 pm-9:38 pm

1 stop7h 17m

$219

ChattanoogaPeoria

CHA - PIA

CHAPIA

Chattanooga Lovell Field

Sat 9/13

5:15 pm-11:23 pm

1 stop7h 08m

Greater Peoria

Sat 9/20

5:11 pm-11:06 pm

1 stop4h 55m

$229

ChattanoogaMoline

CHA - MLI

CHAMLI

Chattanooga Lovell Field

Wed 8/27

6:12 pm-11:01 pm

1 stop5h 49m

Moline Quad-City

Sat 8/30

5:50 pm-12:24 am

1 stop5h 34m

$249

ChattanoogaChicago

CHA - RFD

CHARFD

Chattanooga Lovell Field

Thu 11/6

8:01 pm-8:00 am

1 stop12h 59m

Chicago Greater Rockford

Sun 11/9

10:16 am-4:59 pm

1 stop5h 43m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 27 results
1
2
3

Best time to book a flight from Chattanooga to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Chattanooga to Illinois (average of $245). Flying from Chattanooga to Illinois in March is currently the most expensive (average of $321). 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 CHA to IL?

Find hourly flight availability from Chattanooga 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 July 29, 2025.

When flying from Chattanooga to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Chattanooga to Illinois

Explore weekly flight availability from Chattanooga 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 July 29, 2025.

The most flights from CHA to USIL are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

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 July 29, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Chattanooga 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.
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,899 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
703 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,040 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Chattanooga 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 Chattanooga to Illinois?

    Chattanooga Lovell Field (CHA) is the airport you will fly out of if you book a flight from Chattanooga to Illinois. It is only a 6.0 mi journey to Lovell Field (CHA) from Chattanooga’s city center.

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

    One-way options have recently been found by users for as low as $99 on Spirit Airlines. Other airlines that offer cheap prices include American Airlines from $166 and Delta from $204 one-way.

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

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

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

    Consider SkyWest Airlines (65%), United Airlines (62%) or GoJet (61%) when booking your flight. These represent the most reliable airlines when flying from Chattanooga to Illinois.

  • What are the cheapest flights from Chattanooga to Illinois?

    The cheapest flight price from Chattanooga to Illinois is $173. On average you can expect to pay $656. The most popular route, (Chattanooga Lovell Field - Chicago O'Hare Intl), can usually be booked for $199.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Chattanooga to Illinois (average of $245). Flying from Chattanooga to Illinois in March is currently the most expensive (average of $321). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chattanooga to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Nashville to LaGuardia flights
Nashville to Boston flights
Nashville to Denver flights
Nashville to Las Vegas flights
Nashville to Seattle flights
Nashville to Newark flights
Nashville to John F Kennedy Intl flights
Nashville to Hobby flights
Nashville to O'Hare Intl flights
Memphis to LaGuardia flights
Memphis to Las Vegas flights
Nashville to Fort Lauderdale flights
Memphis to Dallas/Fort Worth flights
Memphis to Newark flights
Nashville to Orlando flights
Memphis to Denver flights
Nashville to Los Angeles flights
Memphis to O'Hare Intl flights
Nashville to San Francisco flights
Nashville to Miami flights
Memphis to John F Kennedy Intl flights
Nashville to George Bush Intcntl flights
Chattanooga to LaGuardia flights
Nashville to Sky Harbor Intl flights
Knoxville to O'Hare Intl flights
Memphis to Hobby flights
Memphis to Orlando flights
Memphis to Los Angeles flights
Memphis to Augusta flights
Nashville to Detroit flights
Nashville to Dallas/Fort Worth flights
Memphis to Miami flights
Nashville to Sarasota flights
Chattanooga to John F Kennedy Intl flights
Nashville to Reagan-National flights
Memphis to Boston flights
Memphis to George Bush Intcntl flights
Nashville to Salt Lake City flights
Nashville to Portland flights
Knoxville to LaGuardia flights
Nashville to Ontario flights
Memphis to Dulles Intl flights
Nashville to Burbank flights
Nashville to Philadelphia flights
Memphis to Atlanta flights
Chattanooga to Las Vegas flights
Nashville to Tampa flights
Knoxville to Boston flights
Chattanooga to O'Hare Intl flights
Nashville to Minneapolis flights

Top 3 airlines flying from Chattanooga to Illinois

Discover the top 3 airlines that operate flights from Chattanooga 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$368FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$365FlexibilityNo cancel feeOn-time69%
DeltaCheapest$208Average$293FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.