Fly to Phoenix (PHX) international airport or Flagstaff (FLG) Flagstaff Pulliam Field.
It is best to rent a car to get around Sedona, but we do have local cab services here. You can always take the shuttle from Phoenix to Sedona if you do not want to rent a car.
Sedona is about 2 hours from Phoenix and about 30 minutes from Flagstaff.
Remember to check the weather!