June: Las Vegas - Chicago (with return) from $279 with Spirit Airlines

June: Las Vegas - Chicago (with return) from $169 with Spirit Airlines

May: San Diego - Chicago (with return) from $283 with Spirit Airlines

May: Los Angeles - Chicago (with return) from $225 with Spirit Airlines

May: Los Angeles - Chicago (with return) from $155 with Spirit Airlines

May: Las Vegas - Chicago (with return) from $209 with Spirit Airlines

April: Las Vegas - Chicago (with return) from $147 with Spirit Airlines

April: Los Angeles - Chicago (with return) from $179 with Spirit Airlines

March: Los Angeles - Chicago (with return) from $549 with Spirit Airlines

March: New Orleans - Chicago (with return) from $273 with Spirit Airlines