HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$176+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
CHA — ORD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$194
(United Airlines)

One-way from

$176
(American Airlines)

Popular in

March

Cheapest in

November

Average price

$336

Good round-trip deal

$310 or less

Good one-way deal

$204 or less
Provider with most accurate pricing for Chattanooga Lovell Field-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chattanooga Lovell Field-Chicago (CHI) flights.
Search Deals
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 ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 17, 2025.

This United Airlines deal was found by Cheapflights users on 4/17. 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.
Sat 5/105:34 pmCHA - ORD
Nonstop2h 16mUnited Airlines
Mon 5/128:20 pmORD - CHA
Nonstop1h 54mUnited Airlines
Deal found 4/17$194
This Delta deal was found by Cheapflights users on 4/17. 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.
Fri 7/182:55 pmCHA - MDW
1 stop4h 33mDelta
Sun 7/279:30 amMDW - CHA
1 stop4h 02mDelta
Deal found 4/17$209
This Delta deal was found by Cheapflights users on 4/16. 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 7/182:55 pmCHA - ORD
1 stop4h 45mDelta
Sun 7/278:55 amORD - CHA
1 stop4h 37mDelta
Deal found 4/16$209
This American Airlines deal was found by Cheapflights users on 4/16. 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 5/145:30 amCHA - STL
1 stop5h 24mAmerican Airlines
Wed 5/215:12 amSTL - CHA
1 stop6h 59mAmerican Airlines
Deal found 4/16$229
This American Airlines deal was found by Cheapflights users on 4/15. 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 4/237:30 pmCHA - ORD
1 stop4h 46mAmerican Airlines
Wed 4/301:23 pmORD - CHA
1 stop4h 34mAmerican Airlines
Deal found 4/15$239
This Mytrip deal was found by Cheapflights users on 4/16. 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.
Sat 5/243:41 pmCHA - RFD
2 stops24h 45mAllegiant Air
Wed 5/288:33 amRFD - CHA
1 stop22h 03mAllegiant Air
Deal found 4/16$255
This Delta deal was found by Cheapflights users on 4/16. 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 5/37:35 amCHA - STL
1 stop6h 26mDelta
Thu 5/87:06 pmSTL - CHA
1 stop3h 34mDelta
Deal found 4/16$259
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Mon 4/218:19 pmCHA - PIA
1 stop4h 37mAmerican Airlines
Sat 4/265:00 amPIA - CHA
1 stop4h 28mAmerican Airlines
Deal found 4/16$279
This Mytrip deal was found by Cheapflights users on 4/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/58:33 amCHA - ORD
2 stops32h 52mMultiple Airlines
Tue 6/1012:41 pmORD - CHA
2 stops24h 38mMultiple Airlines
Deal found 4/17$305
This Mytrip deal was found by Cheapflights users on 4/16. 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 6/612:24 pmCHA - ORD
1 stop19h 08mSpirit Airlines
Mon 6/95:20 pmORD - CHA
2 stops19h 56mSpirit Airlines
Deal found 4/16$333
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Fri 5/27:51 amCHA - CMI
1 stop7h 54mAmerican Airlines
Tue 5/62:57 pmCMI - CHA
1 stop5h 49mAmerican Airlines
Deal found 4/17$346
This United Airlines deal was found by Cheapflights users on 4/16. 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 4/1712:14 pmCHA - PIA
1 stop5h 32mUnited Airlines
Sun 4/205:21 pmPIA - CHA
1 stop4h 39mUnited Airlines
Deal found 4/16$404

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 April 17, 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

Sat 5/10

5:34 pm-6:50 pm

Nonstop2h 16m

Chicago O'Hare Intl

Mon 5/12

8:20 pm-11:14 pm

Nonstop1h 54m

$194

ChattanoogaChicago

CHA - MDW

CHAMDW

Chattanooga Lovell Field

Fri 7/18

2:55 pm-6:28 pm

1 stop4h 33m

Chicago Midway

Sun 7/27

9:30 am-2:32 pm

1 stop4h 02m

$209

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Fri 7/18

2:55 pm-6:40 pm

1 stop4h 45m

Chicago O'Hare Intl

Sun 7/27

8:55 am-2:32 pm

1 stop4h 37m

$209

ChattanoogaSt. Louis

CHA - STL

CHASTL

Chattanooga Lovell Field

Wed 5/14

5:30 am-9:54 am

1 stop5h 24m

Lambert-St Louis

Wed 5/21

5:12 am-1:11 pm

1 stop6h 59m

$229

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Thu 5/1

8:19 pm-11:49 pm

1 stop4h 30m

Chicago O'Hare Intl

Mon 5/5

5:00 am-11:35 am

1 stop5h 35m

$254

ChattanoogaChicago

CHA - RFD

CHARFD

Chattanooga Lovell Field

Sat 5/24

3:41 pm-3:26 pm

2 stops24h 45m

Chicago Greater Rockford

Wed 5/28

8:33 am-7:36 am

1 stop22h 03m

$255

ChattanoogaSt. Louis

CHA - STL

CHASTL

Chattanooga Lovell Field

Sat 5/3

7:35 am-1:01 pm

1 stop6h 26m

Lambert-St Louis

Thu 5/8

7:06 pm-11:40 pm

1 stop3h 34m

$259

ChattanoogaPeoria

CHA - PIA

CHAPIA

Chattanooga Lovell Field

Mon 4/21

8:19 pm-11:56 pm

1 stop4h 37m

Greater Peoria

Sun 4/27

4:28 pm-11:58 pm

1 stop6h 30m

$279

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Thu 6/5

8:33 am-4:25 pm

2 stops32h 52m

Chicago O'Hare Intl

Tue 6/10

12:41 pm-2:19 pm

2 stops24h 38m

$305

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Fri 6/6

12:24 pm-6:32 am

1 stop19h 08m

Chicago O'Hare Intl

Mon 6/9

5:20 pm-2:16 pm

2 stops19h 56m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 23 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 April 17, 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 April 17, 2025.

The most flights from CHA to USIL are scheduled on a Monday (3 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 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 April 17, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and Allegiant Air from Chattanooga to Illinois to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Allegiant Air
7.3
Good
734 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Spirit Airlines
6.3
Okay
7,926 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 $176 on American Airlines. Other airlines that offer cheap prices include United Airlines from $214 and Delta from $224 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 Republic Airways (100%), GoJet (70%) or United Airlines (68%) 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 $160. On average you can expect to pay $755. The most popular route, (Chattanooga Lovell Field - Chicago O'Hare Intl), can usually be booked for $189.

  • 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 Seattle flights
Nashville to Newark flights
Nashville to John F Kennedy Intl flights
Nashville to LaGuardia flights
Nashville to Los Angeles flights
Nashville to Las Vegas flights
Nashville to Denver flights
Nashville to Dallas/Fort Worth flights
Memphis to Los Angeles flights
Nashville to Fort Lauderdale flights
Memphis to Las Vegas flights
Nashville to Orlando flights
Nashville to Boston flights
Memphis to LaGuardia flights
Memphis to O'Hare Intl flights
Chattanooga to LaGuardia flights
Memphis to Miami flights
Memphis to Denver flights
Nashville to Miami flights
Nashville to O'Hare Intl flights
Memphis to Newark flights
Memphis to Seattle flights
Memphis to Hobby flights
Nashville to Sky Harbor Intl flights
Nashville to San Francisco flights
Chattanooga to John F Kennedy Intl flights
Memphis to Orlando flights
Memphis to John F Kennedy Intl flights
Memphis to Atlanta flights
Memphis to Baltimore flights
Nashville to Reagan-National flights
Nashville to Dulles Intl flights
Nashville to Ontario flights
Nashville to Honolulu flights
Chattanooga to O'Hare Intl flights
Nashville to Portland flights
Knoxville to LaGuardia flights
Knoxville to Denver flights
Memphis to George Bush Intcntl flights
Memphis to Reagan-National flights
Nashville to Hobby flights
Memphis to Dulles Intl flights
Memphis to Dallas/Fort Worth flights
Knoxville to O'Hare Intl flights
Memphis to Boston flights
Nashville to Salt Lake City flights
Nashville to Raleigh flights
Chattanooga to Seattle flights
Nashville to Tampa flights
Memphis to Sky Harbor Intl 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$169Average$329FlexibilityNo cancel feeOn-time69%
DeltaCheapest$178Average$294FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$448FlexibilityNo cancel feeOn-time71%

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.