A light-emitting diode (LED) package and a display device having the same are disclosed. In one aspect, the display device includes a display panel and a backlight assembly including a light-emitting diode (LED) package configured to output light via an opening and a light guide plate configured to guide the emitted light to the display panel. The LED package includes a housing having a light reflecting property and including a bottom portion, a sidewall portion connected to the bottom portion, and a cover portion connected to the sidewall portion, wherein the opening is defined in the sidewall portion and faces the light guide plate. The LED package also includes a plurality of LEDs accommodated in the housing, and wherein the LEDs are arranged in a first direction extending from the light guide plate to the opening.