Originally Posted by JT_BOS
I would not do two roundtrips back to back, becuase:
1. It's inhumane, even in first class.
I expected my quick double-transcon to be very painful, but it was cake: you sleep on the redeye and part of the return, and the rest of the time you can watch movies or (in my case) work on the laptop. I have about 12 hours of battery power on my laptop (if wireless is turned off and harddisk/dvd isn't continually running).
I could definitely do two r/t's back-to-back, but it's definitely not the most effective cost-per-mile for the fare (it
is effective time-per-mile because you're flying almost constantly... and if time is more valuable than money then... you should just fly in paid F!

)
Just out of curiosity, will the system let you check in on-line both outbound segments, i.e. lax -> bos? I think it's smart enough to not let you check in for the return?
Online EasyCheckIn has no problem checking in both outbound and returning segments; any flight that departs between 1 and 24 hrs from the time you're online.
In my case, I was able to check in for both SFO-BOS and BOS-ORD-SFO online.