$27+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — ORD
Feb 20 — Feb 271
1 adult, Economy
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Cheapest flights from Atlanta to IllinoisExplore 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 January 21, 2026.
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 January 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:00 am
ATL
- STL
Nonstop1h 51m
Frontier
Fri 2/278:22 pm
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 1/20![Frontier logo]()
$62
This Frontier deal was found by Cheapflights users on 1/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/76:00 am
ATL
- STL
Nonstop1h 51m
Frontier
Mon 2/238:22 pm
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 1/19![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/129:30 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Thu 2/1912:22 pm
MDW
- ATL
Nonstop2h 02m
Frontier
Deal found 1/20![Frontier logo]()
$71
This Priceline deal was found by Cheapflights users on 1/19. 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.
Mon 3/26:00 am
ATL
- STL
Nonstop1h 51m
Frontier
Mon 3/92:09 pm
STL
- ATL
Nonstop1h 44m
Frontier
Deal found 1/19![Frontier logo]()
$73
This Super.com deal was found by Cheapflights users on 1/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/149:15 pm
ATL
- ORD
Nonstop2h 24m
Frontier
Sat 2/214:42 pm
ORD
- ATL
Nonstop2h 26m
Frontier
Deal found 1/18![Frontier logo]()
$73
This Cheapflightsfares deal was found by Cheapflights users on 1/19. 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.
Fri 2/139:15 pm
ATL
- ORD
Nonstop2h 24m
Frontier
Wed 2/186:02 pm
ORD
- ATL
Nonstop2h 32m
Frontier
Deal found 1/19![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/129:30 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Mon 2/166:00 am
MDW
- ATL
Nonstop2h 17m
Frontier
Deal found 1/20![Frontier logo]()
$76
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/229:21 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Mon 2/236:00 am
MDW
- ATL
Nonstop2h 17m
Frontier
Deal found 1/20![Frontier logo]()
$78
This Expedia deal was found by Cheapflights users on 1/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/113:26 pm
ATL
- ORD
1 stop6h 37m
Multiple Airlines
Wed 2/1811:51 am
ORD
- ATL
Nonstop2h 10m
Multiple Airlines
Deal found 1/19![Multiple Airlines logo]()
$78
This Super.com deal was found by Cheapflights users on 1/21. 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 2/410:57 am
ATL
- MDW
Nonstop2h 08m
Frontier
Sat 2/79:38 am
MDW
- ATL
Nonstop2h 07m
Frontier
Deal found 1/21![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 1/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:15 pm
ATL
- ORD
Nonstop2h 24m
Frontier
Mon 2/165:05 am
ORD
- ATL
Nonstop2h 17m
Frontier
Deal found 1/19![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 1/21. 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 1/2810:57 am
ATL
- MDW
Nonstop2h 08m
Frontier
Wed 2/41:20 pm
MDW
- ATL
Nonstop2h 02m
Frontier
Deal found 1/21![Frontier logo]()
$80
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 January 21, 2026.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $62 (Kiwi.com) |
One-way from | $27 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $154 |
Good round-trip deal | $116 or less |
Good one-way deal | $111 or less |
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 January 21, 2026.
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
Fri 1/30
9:22 pm-10:46 pm
Nonstop2h 24m
Chicago O'Hare Intl
Mon 2/2
5:40 am-8:57 am
Nonstop2h 17m
$83
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Wed 2/18
10:51 pm-11:59 pm
1 stop26h 08m
Lambert-St Louis
Sat 2/21
8:17 pm-10:57 pm
Nonstop1h 40m
$93
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Tue 2/10
6:04 pm-7:07 pm
Nonstop2h 03m
Chicago Midway
Thu 2/12
6:25 am-9:42 am
Nonstop2h 17m
$93
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Thu 3/5
3:10 pm-4:16 pm
Nonstop2h 06m
Chicago Midway
Thu 3/12
6:05 am-9:31 am
Nonstop2h 26m
$102
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Fri 3/13
6:44 pm-7:47 pm
Nonstop2h 03m
Chicago Midway
Sun 3/15
6:00 am-9:17 am
Nonstop2h 17m
$107
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Thu 2/12
9:10 pm-9:29 pm
1 stop25h 19m
Chicago Midway
Mon 2/16
6:00 am-9:17 am
Nonstop2h 17m
$109
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Fri 2/6
9:15 pm-10:19 pm
Nonstop2h 04m
Chicago Midway
Mon 2/9
5:01 pm-8:15 pm
Nonstop2h 14m
$112
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Fri 1/30
6:00 am-6:51 am
Nonstop1h 51m
Lambert-St Louis
Mon 2/2
5:42 pm-3:32 pm
1 stop20h 50m
$117
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Thu 2/5
12:16 pm-1:37 pm
Nonstop2h 21m
Chicago O'Hare Intl
Sat 2/7
6:03 am-9:24 am
Nonstop2h 21m
$122
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Fri 1/30
6:00 am-6:51 am
Nonstop1h 51m
Lambert-St Louis
Sun 2/1
9:09 am-11:25 pm
1 stop13h 16m
$129
Showing 1-10 of 60 results
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 $45). 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 January 21, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 21% on flights from Atlanta to Illinois by exploring options for tickets in the morning.
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 January 17, 2026.
Travelers seeking maximum savings on their Atlanta to Illinois flight should consider departing on Saturday 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 January 21, 2026.
The most flights from ATL to USIL are scheduled on a Wednesday (70 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (32 on average).
How much does it cost to fly round-trip from Atlanta to Illinois?
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 January 21, 2026.
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.
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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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.
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 January 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$46 | Average$116 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$58 | Average$146 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$86 | Average$327 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$132 | Average$305 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$143 | Average$393 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$275 | FlexibilityNo cancel fee | On-time63% |