Cheap flights from Atlanta to Chicago from $49

The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Atlanta averaging around $172.

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Thursday when prices can be found for as low as $229. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Atlanta because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $359.

Flying to Chicago O'Hare Intl Airport from Atlanta in the evening is the least expensive time of day to depart. momondo users have found prices as low as $181 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $353. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Atlanta Hartsfield-Jackson to Chicago O'Hare Intl for the best Atlanta Hartsfield-Jackson - Chicago O'Hare Intl flight prices

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $185 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Atlanta for as low as $150 on momondo.

There are 4 cabin classes available to choose from on Atlanta Hartsfield-Jackson to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Frontier, and Southwest are the most popular carriers operating from Atlanta Hartsfield-Jackson to Chicago O'Hare Intl

Frontier, Delta and United Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Atlanta according to our data. Frontier is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 5 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between Atlanta and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 142 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 9% of their flights experiencing any sort of delay.

66 flights are operational daily from Atlanta to Chicago O'Hare Intl Airport as of February 2026. The most popular departure time for this route is 3:00PM, with 40% of flights per day taking off in the afternoon.

The number of flights available between Atlanta and Chicago O'Hare Intl Airport is 464 per week as of February 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.