You’ve asked an important question. What is the closest airport to Disneyland? There are 2 airports to consider. They are Long Beach Airport (LGB) and John Wayne Airport (SNA). Both airports are approximately 14 miles from Disneyland.
Then the next two are LAX at 33 miles, and then Ontario Airport at 35 miles. Some visitors also use Bob Hope (Burbank/BUR), which is about 40 miles away north of Disneyland.