July is the cheapest month to fly this route, with average fares around $102 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $147 | $66 | Peak | |
| June 2026 | $104 | $66 | ||
| July 2026 | $102 | $66 | Best | |
| August 2026 | $110 | $66 |
Departing on Tuesday offers the lowest average fares at $76. Sunday departures are the most expensive at $133, a difference of $57.
The best time to fly is July. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Atlanta to Chicago is July, with average round-trip fares around $102. The lowest fare found in July is $66.
Tuesday departures are the cheapest, averaging $76 round trip. The most expensive day is Sunday at $133.
Based on current pricing trends, booking for July travel offers the best value. Avoid May if possible, as fares average $147 compared to $102 in the cheapest month. August is a solid middle-ground option at $110.
Flying in July instead of May can save you approximately $45 per round trip. The cheapest month averages $102 while the most expensive averages $147.
Airlines, flight times, price calendar, and more for Atlanta to Chicago
View ATL → ORD Details