February: Los Angeles - Chicago (with return) from $145 with Spirit Airlines

February: Las Vegas - Chicago (with return) from $99 with Spirit Airlines

January: Dallas - Chicago (with return) from $121 with Spirit Airlines

January: San Diego - Chicago (with return) from $135 with Spirit Airlines

January: New Orleans - Chicago (with return) from $73 with Spirit Airlines

January: Dallas - Chicago (with return) from $70 with Spirit Airlines

December: San Diego - Chicago (with return) from $568 with Spirit Airlines

December: Las Vegas - Chicago (with return) from $267 with Spirit Airlines

December: Los Angeles - Chicago (with return) from $178 with Spirit Airlines

December: Atlanta - Chicago (with return) from $53 with Spirit Airlines