Fly nonstop from San Francisco to Chicago for $182 round-trip as part of the current 10% off promo deal from Frontier.
Seen below, we found seats departing DEN on Tuesday, June 2, returning from ORD on Wednesday, June 10.
Other dates are also available for travel through June 11. To apply discount, enter promo code SOCIAL when booking.
For booking info, see our Fare Details.
Need a room in Chicago? Here's a look at what's available on Hotelwatchdog for the above dates.