To reserve a bulkhead seat, you can identify and select it from your flight’s online seat map during the booking process. If you’re not sure which row is the bulkhead, research your aircraft’s particular configuration on sites like SeatGuru, which also includes tips, reviews, and passenger photos detailing the best and worst seats on each type of plane.
If you’re traveling with a baby and need a bulkhead with a bassinet hook, call the airline ahead of time to make sure you’re reserving the right row.