thunderforces 
American and United Airlines via Expedia, Orbitz, or Priceline offers Roundtrip Flights from Chicago (ORD) to Cancun, Mexico (CUN) for $170 on select dates in January 2020.
Travel Availability (subject to change):
Departs Chicago (ORD): January 13-14, 20-21, 26-28
Departs Cancun (CUN): January 15-16, 23, 29-30
