Wow, I was planning onbooking now for a December flight, it will be myself, DH, DS1 who will be just making 6 & DS2 who will be 11 mths. I thought booking early would surely get us seats together - but looks like not the case - is any other airlines better? Or what can I do to make sure we do sit together? Whats the A or C boarding passes about? First time any of us fly....
The A, B, and C boarding passes only apply if you fly Southwest Airlines (SWA).
Most airlines actually give you a seat assignment when you book, but Southwest uses a system that is similar to general admission seating in a theater - when you check in to get your boarding pass (which you can do online up to 24 hours before your flight) you are assigned to a boarding group A, B, or C.
When Southwest boards the plane, you line up in 4 lines - Pre-boarders (people in wheelchairs and people with children under 5), and the A, B, and C boarding groups. Each group is allowed on board the plane in turn, and chooses their own seats on a first-come, first-served basis.
Obviously, the pre-boarders get the best choice of seats, since they get on first. Pre-boarders are put on the plane first on the assumption that these are folks who need help or take more time getting situated and will have an easier time of it if they get on before the rest of the plane.
The A boarding group is the most coveted, since the A group gets the best choice of seats after the pre-boarders. The C boarding group, of course, gets the worst choice of seats on the plane, and herein lies the major complaint - by the time the C group gets on the plane, there are usually nothing but single seats left available, which means that a group flying together may not be able to sit together unless they have an A boarding pass.
This boarding procedure is commonly called "cattle call" by passengers. However, many experienced fliers actually prefer the SWA procedure. I am not a big flier myself (I only fly once or twice a year), but in my experience the SWA "cattle call" method is actually a little faster than the traditional "assigned seats" method most of the time. It's not perfect, and it has drawbacks, but so does the traditional "assigned seat" method.