1. Space saving - Perhaps the flat monitor's biggest advantage over a CRT monitor is the amount of space you save on your desktop. All CRT monitors are extremely bulky and heavy. Flat panel monitors have extremely small foot prints (amount of space required on a desktop). They are super thin and very light weight. A flat panel monitor can be only several inches thick and weigh less than 5 pounds.
2. Display size -a flat panel monitor uses its display size very efficiently. A 15 inch monitor might be encased in a 15 ½ inch casing and the total depth in the rear may be less than 5 inches thick. Besides a small case, the size of monitors can vary with flat panel monitors. Many flat panel monitors are available in widescreen and extra large screen sizes. You wouldn't be able to fit a 32 inch CRT monitor on your desk, but with a flat panel monitor, a 32 inch monitor not only fits on your desk, but with plenty of room to boot.
3. Power consumption - LCD flat panel monitors use much less power than a CRT monitor this is an advantage to those who use computers quite frequently. Also LCD flat monitors give off much less radiation than a CRT monitor making it a much safer product.