Before this year, the last time Easter fell on April 24 was in 1859.
If you want to plan ahead, the next time it will fall on April 24 will be in 2095. The latest possible date for Easter is April 25; Easter last fell on that date in 1943, and the next time it will fall on that date will be 2038. The next time Easter will fall on a date later than April 15 will be in 2017.
Sources: Michael P.; Frequency of the date of Easter1875 to 2124; Oremus Almanac.