Virgin America, Delta, American and United are all offering non-stop flights from MCO to LAX for $278 round trip. (Gotta love modern price-matching!). There are seven departures per day from MCO offering non-stop service to LAX. If you want to fly into John Wayne airport instead, you'll need to change planes in Dallas or Atlanta, but it's a nicer airport much closer to Disneyland than big, old, dirty LAX is. And by flying into John Wayne, you land already in Orange County and avoid the Los Angeles traffic and vibe entirely.
There are eight non-stops per day from Miami to LAX, mostly priced at $298 round trip. To avoid nasty LAX... JetBlue's major West Coast hub is at Long Beach Airport, about 25 minutes drive from Disneyland. JetBlue offers several flights per day from Orlando or Ft. Lauderdale to Long Beach, from $264 round trip. There are three other major international airports in the greater LA area besides LAX or Long Beach; Burbank Bob Hope Airport, Ontario International, and Orange County John Wayne Airport. Shop around for the best deals, and a long weekend at Disneyland is very economical from nearly every major city in North America.
The price of jet travel has never been cheaper, especially adjusted for inflation. It's a very, very cheap product available to practically anyone now. Those who don't take advantage of the very cheap price of American jet travel are doing themselves no favors.
Cars Land is calling!