hi,
i just booked tickets for my winter break
1st ticket: oakland to memphis( 2 stops)
oakland to portland -alaska airlines(1st checked bag-25)
portland to houston-united airlines(1st checked bag-25)
houston to memphis-united airlines(1st checked bag-25)

my question is should i have to pay baggage fee for all flights if not, should i pay twice for alaska airline and united airlines separately ??

2nd Ticket: memphis to syracuse( 2 stops)
memphis to Charlotte-us airways (1st checked bag -25)
charlotte to boston -us airways(1st checked bag -25)
boston to syracuse-us airways(1st checked bag -25)

my question is should i have to pay baggage fee for all flights if not paying once at the starting airport is enough.One more question,do i need to check out and recheck in at every stop??