Fly nonstop from Chicago to Phoenix for $145 round-trip on United.
Seen below, we found seats departing ORD on Tuesday, August 25, returning from PHX on Saturday, August 29.
Other dates are also available for travel on Mondays through Wednesdays, and Fridays through Sundays, from August 25 through October 28.
For booking info, see our Fare Details.
Need a room in Phoenix? Here's what's available for the above dates on Hotelwatchdog.