Curious about UA specific commuting policies. I have a CJO for 29 Nov, live in LAS so Im planning on LAX or SFO on the 73. For SC/LC reserve, does UA let you grab open trips in advance of being on the clock? Ive heard DL has something like that, helps avoid the crash pad if you can select trips.

Also, any opinions on LAS to either SFO or LAX for commute?