This is a trip report about my MLK weekend trip to San Diego. The plan was to fly from Chicago to San Diego on Friday. Then on Saturday take a California Surfline train to connect to the Southwest chief to Chicago The flight from Midway to Las Vegas was diverted to Denver because of a medical emergency. The professionalism of the Southwest Airlines crew on flt 623 was awesome. I’ve never seen a flight crew perform under emergency conditions. They did a great job and the pilot nailed a perfect landing at Denver. The Sick passenger was deplaned and they got us underway in about 1 hour. While we were on the ground I turned my phone on and discovered that southwest had already booked me on a later flight from Las Vegas to San Diego. The overall delay into San Diego would be 3 hours. I was ok with that. I am hopeful we got the sick passenger the proper medical attention in time. When we arrived Las Vegas I was lucky to get on an earlier flight which cut the delay into San Diego to about 90 minutes. When I checked on 3 that is due to arrive into Los Angeles tomorrow i discovered it was running 3 hours 26 minutes late. Wondering if this will affect tomorrow’s departure of 4.