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$95+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
CHA — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$179
(American Airlines)

One-way from

$95
(American Airlines)

Popular in

June

Cheapest in

November

Average price

$399

Good round-trip deal

$317 or less

Good one-way deal

$238 or less
From Chattanooga Lovell Field to Illinois
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One-way flight from Chattanooga Lovell Field to Illinois
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Highest demand for flights based on searches. 4% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Chattanooga Lovell Field to Illinois.
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Price to beat on a one-way flight from Chattanooga Lovell Field to Illinois.
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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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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 11/65:00 pmCHA - ORD
Nonstop2h 00mAmerican Airlines
Sat 11/87:05 pmORD - CHA
Nonstop1h 36mAmerican Airlines
Deal found 6/11$179
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/107:01 amCHA - ORD
Nonstop2h 04mUnited Airlines
Thu 7/1710:35 amORD - CHA
Nonstop1h 48mUnited Airlines
Deal found 6/12$194
This Delta deal was found by Cheapflights users on 6/11. 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 7/264:23 pmCHA - MDW
1 stop6h 19mDelta
Sat 8/29:25 amMDW - CHA
1 stop3h 47mDelta
Deal found 6/11$209
This Delta deal was found by Cheapflights users on 6/12. 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 7/47:35 amCHA - ORD
1 stop6h 18mDelta
Tue 7/87:00 amORD - CHA
1 stop6h 29mDelta
Deal found 6/12$209
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Wed 6/2512:27 pmCHA - ORD
1 stop7h 17mSpirit Airlines
Mon 6/307:56 amORD - CHA
1 stop8h 17mSpirit Airlines
Deal found 6/10$215
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 6/265:30 amCHA - STL
1 stop3h 53mDelta
Mon 6/305:23 pmSTL - CHA
1 stop5h 34mDelta
Deal found 6/11$219
This Mytrip deal was found by Cheapflights users on 6/11. 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 7/173:01 pmCHA - ORD
1 stop16h 02mMultiple Airlines
Sat 7/197:49 pmORD - CHA
1 stop16h 52mMultiple Airlines
Deal found 6/11$226
This American Airlines deal was found by Cheapflights users on 6/11. 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 7/118:09 pmCHA - PIA
1 stop5h 03mAmerican Airlines
Tue 7/224:11 pmPIA - CHA
1 stop4h 11mAmerican Airlines
Deal found 6/11$229
This American Airlines deal was found by Cheapflights users on 6/10. 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 7/196:14 pmCHA - STL
2 stops6h 37mAmerican Airlines
Sat 7/264:07 pmSTL - CHA
1 stop4h 15mAmerican Airlines
Deal found 6/10$234
This Mytrip deal was found by Cheapflights users on 6/11. 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 8/83:21 pmCHA - RFD
1 stop17h 51mAllegiant Air
Sun 8/109:21 amRFD - CHA
2 stops28h 10mAllegiant Air
Deal found 6/11$262
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Tue 7/222:43 pmCHA - RFD
1 stop18h 01mMultiple Airlines
Thu 7/249:21 amRFD - CHA
2 stops25h 59mMultiple Airlines
Deal found 6/11$289
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Wed 7/212:27 pmCHA - STL
2 stops29h 37mSpirit Airlines
Mon 7/77:13 pmSTL - CHA
2 stops20h 52mSpirit Airlines
Deal found 6/10$300

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 June 12, 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 11/6

5:00 pm-6:00 pm

Nonstop2h 00m

Chicago O'Hare Intl

Sat 11/8

7:05 pm-9:41 pm

Nonstop1h 36m

$179

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Thu 7/10

7:01 am-8:05 am

Nonstop2h 04m

Chicago O'Hare Intl

Thu 7/17

10:35 am-1:23 pm

Nonstop1h 48m

$194

ChattanoogaChicago

CHA - MDW

CHAMDW

Chattanooga Lovell Field

Sat 7/26

4:23 pm-9:42 pm

1 stop6h 19m

Chicago Midway

Sat 8/2

9:25 am-2:12 pm

1 stop3h 47m

$209

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Fri 7/4

6:37 pm-11:59 pm

1 stop6h 22m

Chicago O'Hare Intl

Thu 7/10

7:10 am-1:57 pm

1 stop5h 47m

$209

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Wed 6/25

12:27 pm-6:44 pm

1 stop7h 17m

Chicago O'Hare Intl

Mon 6/30

7:56 am-5:13 pm

1 stop8h 17m

$215

ChattanoogaSt. Louis

CHA - STL

CHASTL

Chattanooga Lovell Field

Thu 6/26

5:30 am-8:23 am

1 stop3h 53m

Lambert-St Louis

Mon 6/30

5:23 pm-11:57 pm

1 stop5h 34m

$219

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Thu 7/17

3:01 pm-6:03 am

1 stop16h 02m

Chicago O'Hare Intl

Sat 7/19

7:49 pm-1:41 pm

1 stop16h 52m

$226

ChattanoogaPeoria

CHA - PIA

CHAPIA

Chattanooga Lovell Field

Fri 7/11

8:09 pm-12:12 am

1 stop5h 03m

Greater Peoria

Tue 7/22

4:11 pm-9:22 pm

1 stop4h 11m

$229

ChattanoogaSt. Louis

CHA - STL

CHASTL

Chattanooga Lovell Field

Sat 7/19

6:14 pm-11:51 pm

2 stops6h 37m

Lambert-St Louis

Sat 7/26

4:07 pm-9:22 pm

1 stop4h 15m

$234

ChattanoogaChicago

CHA - RFD

CHARFD

Chattanooga Lovell Field

Fri 8/8

3:21 pm-8:12 am

1 stop17h 51m

Chicago Greater Rockford

Sun 8/10

9:21 am-2:31 pm

2 stops28h 10m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 33 results
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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 June 12, 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 June 12, 2025.

The most flights from CHA to USIL are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 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 June 12, 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
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
7.3
Good
725 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
8,052 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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 $95 on American Airlines. Other airlines that offer cheap prices include Allegiant Air from $99 and Delta from $100 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 (81%), United Airlines (79%) or GoJet (78%) 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 $158. On average you can expect to pay $1,749. 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.

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Alternative routes for Chattanooga to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$178Average$302FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$419FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$342FlexibilityNo cancel feeOn-time69%

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