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$42+ Cheap flights from Atlanta (ATL) 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — ORD
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheap flight deals from Atlanta to Illinois

Cheapest flights from Atlanta to Illinois
Explore the most affordable flight options available from Atlanta to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 10, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:43 amATL - MDW
Nonstop2h 03mFrontier
Wed 1/75:10 pmMDW - ATL
Nonstop2h 12mFrontier
Deal found 12/8$73
This Cheapflightsfares deal was found by Cheapflights users on 12/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:18 pmATL - ORD
Nonstop2h 28mFrontier
Wed 1/75:50 amORD - ATL
Nonstop2h 14mFrontier
Deal found 12/8$73
This Frontier deal was found by Cheapflights users on 12/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:10 pmATL - ORD
Nonstop2h 14mFrontier
Sat 1/104:46 pmORD - ATL
Nonstop2h 26mFrontier
Deal found 12/9$78
This Priceline deal was found by Cheapflights users on 12/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/161:56 pmATL - ORD
Nonstop2h 16mFrontier
Tue 12/164:22 pmORD - ATL
Nonstop2h 26mFrontier
Deal found 12/8$80
This Super.com deal was found by Cheapflights users on 12/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:15 pmATL - ORD
Nonstop2h 16mFrontier
Sat 1/104:46 pmORD - ATL
Nonstop2h 26mFrontier
Deal found 12/8$84
This Priceline deal was found by Cheapflights users on 12/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:18 pmATL - ORD
Nonstop2h 28mMultiple Airlines
Sat 1/1012:44 pmORD - ATL
1 stop9h 41mMultiple Airlines
Deal found 12/8$88
This Frontier deal was found by Cheapflights users on 12/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:10 pmATL - ORD
Nonstop2h 14mFrontier
Thu 1/85:50 amORD - ATL
Nonstop2h 14mFrontier
Deal found 12/9$89
This Frontier deal was found by Cheapflights users on 12/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:55 amATL - STL
Nonstop1h 45mFrontier
Thu 1/83:43 pmSTL - ATL
Nonstop1h 45mFrontier
Deal found 12/8$90
This Super.com deal was found by Cheapflights users on 12/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:10 pmATL - ORD
Nonstop2h 14mFrontier
Wed 12/316:05 amORD - ATL
Nonstop2h 20mFrontier
Deal found 12/9$96
This Super.com deal was found by Cheapflights users on 12/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:10 pmATL - MDW
Nonstop2h 02mFrontier
Tue 1/66:52 amMDW - ATL
Nonstop2h 18mFrontier
Deal found 12/8$97
This Super.com deal was found by Cheapflights users on 12/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:10 pmATL - MDW
Nonstop2h 02mFrontier
Wed 12/316:12 amMDW - ATL
Nonstop2h 18mFrontier
Deal found 12/9$98
This Frontier deal was found by Cheapflights users on 12/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:10 pmATL - ORD
Nonstop2h 14mFrontier
Fri 1/94:49 pmORD - ATL
Nonstop2h 26mFrontier
Deal found 12/9$98

Find flight deals from Atlanta to Illinois

Keep the following information in mind while searching for Atlanta to Illinois flight deals. Data was last updated December 10, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$68
(Kiwi.com)

One-way from

$42
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$174

Good round-trip deal

$119 or less

Good one-way deal

$89 or less
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Chicago (CHI) flights.
Search Deals
From Atlanta Hartsfield-Jackson to Illinois
Search Deals
One-way flight from Atlanta Hartsfield-Jackson to Illinois
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Atlanta Hartsfield-Jackson to Illinois.
Search Deals
Price to beat on a one-way flight from Atlanta Hartsfield-Jackson to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Atlanta 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 December 10, 2025.
Use the filters below to find and compare flights from Atlanta to Illinois that are best for you.

Fly from

Atlanta

Fly to

Illinois

Route

Depart

Return

Price

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Thu 1/22

12:16 pm-1:37 pm

Nonstop2h 21m

Chicago O'Hare Intl

Sat 1/24

6:03 am-9:24 am

Nonstop2h 21m

$77

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Sun 2/8

9:22 pm-10:46 pm

Nonstop2h 24m

Chicago O'Hare Intl

Wed 2/11

4:45 pm-8:02 pm

Nonstop2h 17m

$78

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Thu 1/15

5:43 pm-11:46 pm

1 stop7h 03m

Chicago O'Hare Intl

Mon 1/19

6:20 am-9:41 am

Nonstop2h 21m

$93

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Thu 1/22

3:26 pm-9:03 pm

1 stop6h 37m

Chicago O'Hare Intl

Sun 1/25

2:42 pm-6:05 pm

Nonstop2h 23m

$93

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 2/5

4:13 pm-11:33 pm

1 stop8h 20m

Lambert-St Louis

Mon 2/9

8:22 pm-11:06 pm

Nonstop1h 44m

$111

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Thu 1/22

9:57 am-6:16 pm

1 stop9h 19m

Chicago O'Hare Intl

Sat 1/24

7:20 am-8:49 pm

1 stop12h 29m

$113

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Fri 1/16

9:06 am-2:17 pm

1 stop6h 11m

Chicago O'Hare Intl

Sun 1/18

6:20 am-9:41 am

Nonstop2h 21m

$116

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Thu 2/19

10:46 pm-7:50 am

1 stop10h 04m

Lambert-St Louis

Mon 2/23

3:49 pm-12:22 pm

1 stop19h 33m

$123

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Mon 1/19

6:00 am-6:51 am

Nonstop1h 51m

Lambert-St Louis

Thu 1/22

5:42 pm-7:14 am

1 stop12h 32m

$133

AtlantaChicago

ATL - MDW

ATLMDW

Atlanta Hartsfield-Jackson

Sat 1/17

9:35 am-10:32 am

Nonstop1h 57m

Chicago Midway

Sat 1/17

5:31 pm-8:50 pm

Nonstop2h 19m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 60 results
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Best time to book a flight from Atlanta to Illinois

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

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

Currently, January is the cheapest month in which you can book a flight from Atlanta to Illinois (average of $43). Flying from Atlanta to Illinois in June is currently the most expensive (average of $80). 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 ATL to IL?

Find hourly flight availability from Atlanta 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 December 10, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 27% on flights from Atlanta to Illinois by exploring options for tickets in the evening.

What is the cheapest day to fly from Atlanta to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Atlanta to Illinois. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Atlanta to Illinois flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Atlanta to Illinois

Explore weekly flight availability from Atlanta 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 December 10, 2025.

The most flights from ATL to USIL are scheduled on a Monday (79 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 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 December 10, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Atlanta to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,007 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,092 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,048 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,085 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

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

    Located just 8.2 mi from the city center, Atlanta Hartsfield-Jackson (ATL) is the airport most travelers will use when flying to Illinois from Atlanta.

  • How long is the flight from Atlanta to Illinois?

    A quick flight from Atlanta to Illinois can take about 1h 57m. Frontier provides one of the quickest options available for as low as $137. Atlanta and Illinois are separated by a distance of 591 mi. This flight may include one or multiple stops.

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

    $31 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Frontier and American Airlines, with prices starting from $36 and $68, respectively.

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

    While some choose either Atlanta Hartsfield-Jackson - Chicago Midway or Atlanta Hartsfield-Jackson - Lambert-St Louis, Atlanta Hartsfield-Jackson - Chicago O'Hare Intl is the most popular route from Atlanta to Illinois.

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

    No one likes to see their flight delayed. When booking a flight from Atlanta to Illinois consider choosing Cathay Pacific (90%), SkyWest Airlines (88%) or WestJet (83%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Atlanta to Illinois?

    On average you can expect to pay $940 for a flight from Atlanta to Illinois. The cheapest flight overall is $42 while the most popular route, (Atlanta Hartsfield-Jackson - Chicago O'Hare Intl) is currently priced at $68.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Atlanta to Illinois (average of $43). Flying from Atlanta to Illinois in June is currently the most expensive (average of $80). 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 Atlanta to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Atlanta to Illinois

Discover the top 6 airlines that operate flights from Atlanta 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 December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$58Average$122FlexibilityNo cancel feeOn-time65%
FrontierCheapest$59Average$146FlexibilityNo cancel feeOn-time62%
DeltaCheapest$108Average$331FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$139Average$293FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$144Average$401FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$157Average$271FlexibilityNo cancel feeOn-time63%

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