Chicago (MDW) to Atlanta (ATL): 592 miles (952 km) great-circle, about 1h 40m nonstop by our estimate. Cheapest fare observed: $105 round-trip on Frontier, nonstop, departing May 8, 2026.
$105 round-trip, Frontier F92780, departing 2026-05-08 at 12:04, returning 2026-05-10. The recorded itinerary left on a Friday, returning on a Sunday 2 nights later; the fare was observed 13 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $105, it was the cheapest of the 30 round-trip fares we recorded from MDW (median $316). That is 17.8 cents per great-circle mile (round-trip price over one-way distance), below the MDW median of 22.1 cents across 30 round-trip routes.
Routes from MDW of similar length: Washington (576 mi) at $217 and Philadelphia (667 mi) at $141.
Frontier had the cheapest fare on 11 of 30 MDW routes. It is the 29th longest of the 30 routes we track from MDW.
Of 24 departure airports with a fare to Atlanta, Chicago (MDW) ranked 4th at $105. Lowest: $52 from Fort Lauderdale (FLL); highest: $1436 from Nairobi (NBO); 12 nonstop. Cheapest-fare airlines (routes): Frontier (20), Spirit (2), airline F2 (1) and Copa (1).
The reverse, Atlanta (ATL) to Chicago (CHI), was $89 round-trip on Frontier, nonstop, departing July 1, 2026. Atlanta to Chicago flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, America/New_York; flight time is our estimate.