FlyerTalk Evangelist
Join Date: Oct 2001
Location: Falkirk, Scotland,VS Red, BA Gold, HH Diamond,UK Amex Plat
Programs: Master of the Privy Purse des Muccis
Posts: 17,910
Hi
On separate tickets and having to check your bags again with BA you will have to collect them at SFO ( T2 i think) and get them to the BA check in desks at the International Terminal ( A gates) and completed check in 1 h prior to departure (ie st 1835 for a 1935 departure). BA will have no obligation to assist you if you miss this deadline.
I do not know about Alaska's baggage policy but I have alerted a moderator to move this post to the alaska airline forum where the experts should be able to help ( as you will be checking in with Alaska at LAS and subject to their check in /Baggage transfer policy.
On 2 separate tickets ( esp going long haul) I would be a little uncomfortable with this schedule ( if everything runs ok it should be possible) but would consider seeing if I could get on an earlier LAS-SFO flight to give more headroom
Regards
TBS