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$43+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Atlanta to Illinois

Keep the following information in mind while searching for Atlanta to Illinois flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$65
(Frontier)

One-way from

$44
(Cheapflightsfares)

Popular in

December

Cheapest in

April

Average price

$120

Good round-trip deal

$102 or less

Good one-way deal

$104 or less
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Chicago (CHI) flights.
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From Atlanta Hartsfield-Jackson to Illinois
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One-way flight from Atlanta Hartsfield-Jackson to Illinois
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Highest demand for flights based on searches. 11% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Atlanta Hartsfield-Jackson to Illinois.
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Price to beat on a one-way flight from Atlanta Hartsfield-Jackson to Illinois.
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Find 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 February 20, 2025.

This Trip.com deal was found by Cheapflights users on 2/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/266:05 amATL - MDW
Nonstop2h 02mFrontier
Wed 3/58:12 amMDW - ATL
Nonstop2h 06mFrontier
Deal found 2/20$64
This Frontier deal was found by Cheapflights users on 2/20. 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.
Fri 5/169:52 pmATL - ORD
Nonstop2h 19mFrontier
Mon 5/196:20 amORD - ATL
Nonstop2h 20mFrontier
Deal found 2/20$65
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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.
Wed 3/198:05 amATL - ORD
1 stop11h 51mSpirit Airlines
Mon 3/249:01 pmORD - ATL
1 stop11h 00mSpirit Airlines
Deal found 2/19$69
This Priceline deal was found by Cheapflights users on 2/19. 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.
Thu 4/244:14 pmATL - ORD
1 stop9h 27mMultiple Airlines
Sun 4/276:30 amORD - ATL
Nonstop2h 13mMultiple Airlines
Deal found 2/19$72
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/306:40 pmATL - MDW
Nonstop1h 55mSouthwest
Tue 5/61:30 pmMDW - ATL
2 stops5h 55mSouthwest
Deal found 2/20$180
This KAYAK deal was found by Cheapflights users on 2/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/129:25 pmATL - MDW
Nonstop1h 58mDelta
Fri 3/146:00 amMDW - ATL
Nonstop1h 58mDelta
Deal found 2/20$194
This American Airlines deal was found by Cheapflights users on 2/20. 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 8/286:17 amATL - ORD
Nonstop2h 08mAmerican Airlines
Sat 8/306:25 pmORD - ATL
Nonstop1h 55mAmerican Airlines
Deal found 2/20$198
This Delta deal was found by Cheapflights users on 2/20. 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 4/163:20 pmATL - MLI
Nonstop2h 00mDelta
Mon 4/215:05 pmMLI - ATL
Nonstop1h 59mDelta
Deal found 2/20$199
This American Airlines deal was found by Cheapflights users on 2/18. 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 4/94:28 pmATL - BMI
1 stop5h 43mAmerican Airlines
Wed 4/165:05 amBMI - ATL
1 stop4h 40mAmerican Airlines
Deal found 2/18$201
This Mytrip deal was found by Cheapflights users on 2/19. 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 5/169:45 pmATL - STL
1 stop27h 21mFrontier
Sun 5/185:47 pmSTL - ATL
1 stop5h 12mFrontier
Deal found 2/19$238
This Mytrip deal was found by Cheapflights users on 2/20. 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 3/207:34 amATL - STL
2 stops29h 11mMultiple Airlines
Mon 3/2412:15 pmSTL - ATL
2 stops32h 10mMultiple Airlines
Deal found 2/20$240
This Mytrip deal was found by Cheapflights users on 2/19. 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 5/98:40 amATL - STL
2 stops34h 52mSpirit Airlines
Sun 5/117:37 pmSTL - ATL
1 stop12h 20mSpirit Airlines
Deal found 2/19$241

Find flights from Atlanta to Illinois within your budget

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 February 20, 2025.

Fly from

Atlanta

Fly to

Illinois

Route

Depart

Return

Price

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Thu 4/3

7:34 am-8:44 am

Nonstop2h 10m

Chicago O'Hare Intl

Sun 4/6

8:00 am-11:17 am

Nonstop2h 17m

$64

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Fri 5/16

9:52 pm-11:11 pm

Nonstop2h 19m

Chicago O'Hare Intl

Mon 5/19

6:20 am-9:40 am

Nonstop2h 20m

$66

AtlantaChicago

ATL - ORD

ATLORD

Atlanta Hartsfield-Jackson

Wed 3/26

4:42 pm-1:38 am

1 stop9h 56m

Chicago O'Hare Intl

Sat 3/29

7:45 pm-10:45 pm

Nonstop2h 00m

$67

AtlantaChicago

ATL - MDW

ATLMDW

Atlanta Hartsfield-Jackson

Wed 3/5

6:05 am-7:07 am

Nonstop2h 02m

Chicago Midway

Wed 3/12

5:58 pm-9:13 pm

Nonstop2h 15m

$67

AtlantaChicago

ATL - MDW

ATLMDW

Atlanta Hartsfield-Jackson

Wed 4/30

6:40 pm-7:35 pm

Nonstop1h 55m

Chicago Midway

Tue 5/6

1:30 pm-8:25 pm

2 stops5h 55m

$180

AtlantaChicago

ATL - MDW

ATLMDW

Atlanta Hartsfield-Jackson

Wed 3/12

9:25 pm-10:23 pm

Nonstop1h 58m

Chicago Midway

Fri 3/14

6:00 am-8:58 am

Nonstop1h 58m

$194

AtlantaMoline

ATL - MLI

ATLMLI

Atlanta Hartsfield-Jackson

Wed 4/16

3:20 pm-4:20 pm

Nonstop2h 00m

Moline Quad-City

Mon 4/21

5:05 pm-8:04 pm

Nonstop1h 59m

$199

AtlantaBloomington

ATL - BMI

ATLBMI

Atlanta Hartsfield-Jackson

Wed 4/9

4:28 pm-9:11 pm

1 stop5h 43m

Bloomington-Normal

Wed 4/16

5:05 am-10:45 am

1 stop4h 40m

$201

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 5/16

9:45 pm-12:06 am

1 stop27h 21m

Lambert-St Louis

Sun 5/18

5:47 pm-11:59 pm

1 stop5h 12m

$238

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Fri 5/9

8:40 am-6:32 pm

2 stops34h 52m

Lambert-St Louis

Sun 5/11

7:37 pm-8:57 am

1 stop12h 20m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 58 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.

Travel insights for flights from Atlanta to Illinois

Get recent, data-driven insights about flights from Atlanta to Illinois including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Atlanta to Illinois (average of $245). Flying from Atlanta 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 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 February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Atlanta to Illinois as you normally would.

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 February 20, 2025.

The most flights from ATL to USIL are scheduled on a Wednesday (69 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 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 February 20, 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
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Sun Country Air
7.0
Good
374 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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.

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

    $44 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and Southwest, with prices starting from $47 and $80, 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 (100%), Republic Airways (95%) or Alaska Airlines (89%) 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 $859 for a flight from Atlanta to Illinois. The cheapest flight overall is $48 while the most popular route, (Atlanta Hartsfield-Jackson - Chicago O'Hare Intl) is currently priced at $41.

  • 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, August is the cheapest month in which you can book a flight from Atlanta to Illinois (average of $245). Flying from Atlanta 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 Atlanta to Illinois

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$37Average$99FlexibilityNo cancel feeOn-time65%
FrontierCheapest$48Average$135FlexibilityNo cancel feeOn-time62%
DeltaCheapest$102Average$351FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$116Average$264FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$137Average$413FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$158Average$275FlexibilityNo cancel feeOn-time63%
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