Fly into SNA (John Wayne Orange County)

look at the Virgin America and Southwest Airline websites - often they will give special combo rates with Disney area hotels

when you search for airfare also search from the other 2 SF Bay Area airports - OAK and SJC

(I should have added that there is also excellent bus service from LAX to Anaheim) - go with the best air deal to S. California

Remember, this is S. California - made for auto travel, you will have difficulty getting around without one!