Frontier's UpFront Plus guarantees an empty middle seat for extra comfort.
Zone 1 boarding available with carry-on purchase or special fare bundle.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $78 (Expedia) |
One-way from | $48 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $149 |
Good round-trip deal | $129 or less |
Good one-way deal | $101 or less |
Fly from
Fly to
Route
Depart
Return
Price
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Sat 1/24
9:20 pm-10:44 pm
Nonstop2h 24m
Chicago O'Hare Intl
Sat 1/31
7:20 am-8:49 pm
1 stop12h 29m
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Sat 2/7
9:20 pm-10:44 pm
Nonstop2h 24m
Chicago O'Hare Intl
Mon 2/9
5:40 am-8:57 am
Nonstop2h 17m
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Thu 2/19
5:47 pm-11:47 pm
1 stop7h 00m
Chicago O'Hare Intl
Mon 2/23
10:44 am-11:33 pm
1 stop11h 49m
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Wed 2/18
10:54 pm-11:56 pm
Nonstop2h 02m
Chicago O'Hare Intl
Sat 2/21
6:45 am-9:58 am
Nonstop2h 13m
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Wed 2/11
10:10 am-11:31 am
Nonstop2h 21m
Chicago O'Hare Intl
Wed 2/18
6:03 pm-9:07 pm
Nonstop2h 04m
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Wed 3/4
3:12 pm-9:13 pm
1 stop7h 01m
Chicago O'Hare Intl
Sun 3/8
8:16 pm-10:24 am
1 stop13h 08m
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Mon 2/9
7:55 pm-9:00 pm
Nonstop2h 05m
Chicago O'Hare Intl
Wed 2/11
9:55 am-1:08 pm
Nonstop2h 13m
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Sat 2/7
2:25 pm-3:20 pm
Nonstop1h 55m
Chicago Midway
Sat 2/7
5:40 pm-8:35 pm
Nonstop1h 55m
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Fri 2/20
8:15 am-9:33 am
Nonstop2h 18m
Chicago O'Hare Intl
Sun 2/22
7:20 am-10:24 am
Nonstop2h 04m
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Fri 2/20
5:45 pm-6:49 pm
Nonstop2h 04m
Chicago O'Hare Intl
Sun 2/22
6:45 am-9:58 am
Nonstop2h 13m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
The price you pay for your flight from Atlanta to Chicago may vary depending on when you book. For the best chance of a lower fare, look to book 29 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, January is the cheapest month in which you can book a flight from Atlanta to Chicago (average of $44). Flying from Atlanta to Chicago 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.
One of the essential ways to save on airfare from Atlanta to Chicago is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 35% on airfare.
Travelers seeking maximum savings on their Atlanta to Chicago 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.
The most flights from ATL to CHI are scheduled on a Sunday (95 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (54 on average).
About 14% of weekly flights between Atlanta and Chicago have experienced delays in the past year, with the average delay time being 132 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Over the last year, United Airlines have had the lowest number of delays on this route, with just 7% of flights being delayed.
Overall
Comfort
Crew
Food
Boarding
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Comfort
Crew
Food
Boarding
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Comfort
Crew
Food
Boarding
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Comfort
Crew
Food
Boarding
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Comfort
Crew
Food
Boarding
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Comfort
Crew
Food
Boarding
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$121 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$61 | Average$150 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$107 | Average$250 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$139 | Average$264 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$144 | Average$228 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$273 | FlexibilityNo cancel fee | On-time63% |