[05/11/2018 @ 11:21 AM] Fewer dates available now. Mostly in September.
Southwest has round-trip flights from Houston (HOU) to Chicago or Atlanta (MDW/ATL) starting at $100, NONSTOP. $50-$55 each-way. Flights from June to September, mostly on Tuesdays, Wednesdays and Saturdays. Weekends available in August and September. Origin/Destination reversible.
Note: United and AA tend to match Southwest fares with inferior “Basic Economy” fares that have bag fees and other various restrictions. Southwest doesn’t charge a change fee or a cancellation fee and allows for 2 checked bags for free.
Note: You can save an additional $100 if you purchase your Flight+Hotel together as a package on Southwest Vacations and use the GETAWAY coupon code.
Click for more details and booking links Nonstop Flights: Houston to/from Chicago / Atlanta $100-$110 r/t – Southwest