Atlanta (ATL) to Chicago (CHI): 607 miles (976 km) great-circle, about 1h 45m nonstop by our estimate. Cheapest fare observed: $89 round-trip on Frontier, nonstop, departing July 1, 2026.
$89 round-trip, Frontier F92779, departing 2026-07-01 at 10:05, returning 2026-07-07. The recorded itinerary left on a Wednesday, returning on a Tuesday 6 nights later; the fare was observed 67 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $89, it ranked 4th of the 30 round-trip fares we recorded from ATL (median $212). That is 14.7 cents per great-circle mile (round-trip price over one-way distance), close to the ATL median of 15.8 cents across 30 round-trip routes.
Routes from ATL of similar length: Miami (596 mi) at $72 and Fort Lauderdale (582 mi) at $77.
Frontier had the cheapest fare on 18 of 30 ATL routes. It is the 25th longest of the 30 routes we track from ATL.
Of 33 departure airports with a fare to Chicago, Atlanta (ATL) ranked 1st at $89. Lowest: $89 from Atlanta (ATL); highest: $1241 from Nairobi (NBO); 16 nonstop. Cheapest-fare airlines (routes): Frontier (15), Spirit (5), United Airlines (4), American Airlines (2), airline 0O (1) and Alaska Airlines (1), plus 5 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Chicago; flight time is our estimate.