Egg salad lasts approximately three to five days in the refrigerator. Store egg salad in an air-tight container to ensure it stays fresh. Do not freeze egg salad.
Never leave egg salad unrefrigerated for more than two hours. Leaving egg salad at room temperature encourages bacteria growth since bacteria thrive at temperatures between 40 and 140 degrees Fahrenheit. Discard egg salad that is left out for more than a couple of hours. Before eating egg salad, always check to make sure it is still fresh. Discard any egg salad that smells unpleasant or does not look fresh. Do not taste it in an attempt to verify whether or not it is edible.