you can fly into Reno which is about 3 hours north, but is the closest.
Everytime i hear bout people fly into reno to go to mammoth it just confuses me. I mean you fly into an airport that is literally 30mins-an hour and 15 mins away from 17 ski resorts, but they drive 3 hours to the middle of nowhere for one (well ok two counting june).
Idk doesnt bother me cuz it keeps people away from Tahoe, just think its stupid.