December: San Diego - Chicago (with return) from $232 with Spirit Airlines

December: Las Vegas - Chicago (with return) from $359 with Spirit Airlines

November: San Diego - Chicago (with return) from $433 with Spirit Airlines

November: New Orleans - Chicago (with return) from $221 with Spirit Airlines

November: New Orleans - Chicago (with return) from $214 with Spirit Airlines

November: Phoenix - Chicago (with return) from $308 with Spirit Airlines

October: Los Angeles - Chicago (with return) from $190 with Spirit Airlines

October: Las Vegas - Chicago (with return) from $125 with Spirit Airlines

October: Los Angeles - Chicago (with return) from $188 with Spirit Airlines

September: Los Angeles - Chicago (with return) from $223 with Spirit Airlines