Originally Posted by
DanK
In my case, that WAS my larger item; my smaller was a small briefcase. The problem was not that the item was a backpack. I have never had an airline tell me that I can't place my larger item in the rack. The problem is that airlines assign boarding times. United, for example, puts people who fly United infrequently in the last category, which is group 5 on larger planes. That means that you can be at the gate long before they open and still face full racks when you are allowed to board, if the flight is full.
If the bag is small enough and you can manage having no place for your feet, you can stick it under the seat in front of you, assuming you can fit your second item, if you have one, with it or above.
This problem has gotten noticeably worse since the airlines started charging people for checked bags. That has given people even more of an incentive to cram as much stuff as they can get away with into the racks--often things far larger than are "allowed"--leaving less space per passenger. And it has gotten worse as they have increased the number of people with special boarding privileges--e.g., those who pay annual fees to have the airline's own credit card.
The airlines have varying policies about all of this. Some let you buy earlier boarding privileges. Some (not all) will give you early boarding if you buy an economy plus (or equivalent) ticket. And sometimes you can luck out even if you get a bad boarding number--for example, if they start boarding early and a lot of passengers arrive fairly late. That has happened to me numerous times.