With all respect, I would NEVER do that with only 3 hours.
Originally Posted by
AdamUK
Thanks for the advice. I am travelling April next year (looking for award travel also for the Mrs). I usually look at long connection times, as I have to clear immigration/reclear security as a Brit, and allowing for delays out of LHR/into SFO. Though will definately look for the 767/777.
And the reality is that UA will change your schedule at least 3 times between now and then.