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$123+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
CHA — ORD
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$169
(United Airlines)

One-way from

$123
(Delta)

Popular in

June

Cheapest in

November

Average price

$349

Good round-trip deal

$305 or less

Good one-way deal

$214 or less
Provider with most accurate pricing for Chattanooga Lovell Field-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Chattanooga Lovell Field-Chicago (CHI) flights.
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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. 3% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/28. 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.
Wed 6/251:53 pmCHA - ORD
Nonstop2h 02mUnited Airlines
Tue 7/110:35 amORD - CHA
Nonstop1h 48mUnited Airlines
Deal found 4/28$169
This Delta deal was found by Cheapflights users on 4/27. 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 6/146:40 pmCHA - MDW
1 stop4h 05mDelta
Sat 6/211:09 pmMDW - CHA
1 stop5h 18mDelta
Deal found 4/27$189
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 5/238:10 pmCHA - ORD
1 stop5h 01mAmerican Airlines
Mon 5/265:00 amORD - CHA
1 stop7h 11mAmerican Airlines
Deal found 4/28$189
This Mytrip deal was found by Cheapflights users on 4/29. 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 6/68:42 amCHA - RFD
1 stop24h 22mAllegiant Air
Wed 6/119:35 amRFD - CHA
1 stop21h 08mAllegiant Air
Deal found 4/29$204
This Delta deal was found by Cheapflights users on 4/28. 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.
Thu 5/811:06 amCHA - ORD
1 stop6h 24mDelta
Tue 5/135:30 amORD - CHA
1 stop3h 31mDelta
Deal found 4/28$219
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Mon 6/93:42 pmCHA - ORD
1 stop8h 47mSpirit Airlines
Wed 6/117:37 amORD - CHA
1 stop6h 10mSpirit Airlines
Deal found 4/29$228
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/205:30 amCHA - STL
1 stop3h 53mDelta
Tue 6/246:00 amSTL - CHA
1 stop3h 05mDelta
Deal found 4/29$229
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 6/308:20 pmCHA - STL
1 stop4h 39mAmerican Airlines
Mon 7/144:28 pmSTL - CHA
1 stop6h 50mAmerican Airlines
Deal found 4/29$230
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/86:40 pmCHA - MLI
1 stop5h 06mDelta
Mon 8/185:00 pmMLI - CHA
1 stop4h 02mDelta
Deal found 4/29$249
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 5/155:30 amCHA - PIA
1 stop6h 34mAmerican Airlines
Sun 5/185:00 amPIA - CHA
1 stop4h 34mAmerican Airlines
Deal found 4/29$254
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/146:07 pmCHA - MLI
1 stop5h 07mAmerican Airlines
Sun 5/185:00 amMLI - CHA
1 stop4h 34mAmerican Airlines
Deal found 4/29$259
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/163:59 pmCHA - ORD
1 stop15h 38mMultiple Airlines
Wed 6/187:32 amORD - CHA
1 stop23h 01mMultiple Airlines
Deal found 4/28$275

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 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

Wed 6/25

1:53 pm-2:55 pm

Nonstop2h 02m

Chicago O'Hare Intl

Tue 7/1

10:35 am-1:23 pm

Nonstop1h 48m

$169

ChattanoogaChicago

CHA - MDW

CHAMDW

Chattanooga Lovell Field

Sat 6/14

6:40 pm-9:45 pm

1 stop4h 05m

Chicago Midway

Sat 6/21

1:09 pm-7:27 pm

1 stop5h 18m

$189

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Fri 5/23

8:10 pm-12:11 am

1 stop5h 01m

Chicago O'Hare Intl

Mon 5/26

5:00 am-1:11 pm

1 stop7h 11m

$189

ChattanoogaChicago

CHA - RFD

CHARFD

Chattanooga Lovell Field

Fri 6/6

8:42 am-8:04 am

1 stop24h 22m

Chicago Greater Rockford

Wed 6/11

9:35 am-7:43 am

1 stop21h 08m

$204

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Mon 6/9

3:42 pm-11:29 pm

1 stop8h 47m

Chicago O'Hare Intl

Wed 6/11

7:37 am-2:47 pm

1 stop6h 10m

$228

ChattanoogaSt. Louis

CHA - STL

CHASTL

Chattanooga Lovell Field

Fri 6/20

5:30 am-8:23 am

1 stop3h 53m

Lambert-St Louis

Tue 6/24

6:00 am-10:05 am

1 stop3h 05m

$229

ChattanoogaSt. Louis

CHA - STL

CHASTL

Chattanooga Lovell Field

Mon 6/30

8:20 pm-11:59 pm

1 stop4h 39m

Lambert-St Louis

Mon 7/14

4:28 pm-12:18 am

1 stop6h 50m

$230

ChattanoogaChicago

CHA - ORD

CHAORD

Chattanooga Lovell Field

Tue 5/20

7:50 pm-11:58 pm

1 stop5h 08m

Chicago O'Hare Intl

Tue 5/27

7:05 am-2:31 pm

1 stop6h 26m

$247

ChattanoogaMoline

CHA - MLI

CHAMLI

Chattanooga Lovell Field

Fri 8/8

6:40 pm-10:46 pm

1 stop5h 06m

Moline Quad-City

Mon 8/18

5:00 pm-10:02 pm

1 stop4h 02m

$249

ChattanoogaPeoria

CHA - PIA

CHAPIA

Chattanooga Lovell Field

Thu 5/15

5:30 am-11:04 am

1 stop6h 34m

Greater Peoria

Sun 5/18

5:00 am-10:34 am

1 stop4h 34m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 25 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 April 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 April 29, 2025.

The most flights from CHA to USIL are scheduled on a Monday (3 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 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 29, 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
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,956 reviews
Delta
8.0
Very good
7,929 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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 $123 on Delta. Other airlines that offer cheap prices include American Airlines from $149 and Allegiant Air from $162 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 $142. On average you can expect to pay $867. The most popular route, (Chattanooga Lovell Field - Chicago O'Hare Intl), can usually be booked for $169.

  • 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

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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$178Average$298FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$446FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$319FlexibilityNo cancel feeOn-time69%

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