Originally Posted by Adam1

Flying For Fun, sfozrhfco - Thank you both for your replies and information provided.
Interesting to know and helps confirm my earlier thoughts.

For some reason I had 'LAX' on the brain. I'm actually flying into SFO.

Having a quick look through the schedules and it seems that United Airlines are the only airline who have a later flight.
I assume AS would not move me onto a UA flight.
Alaska's remaining flight for the day via SEA will require an overnight stay there, so I again assume I won't be moved to that flight.

I'll research some airport hotels that fit my budget and will set up Uber and Lyft accounts just for the unlikely event I'll need to stay the night at SFO.

Thanks again. ^