We recommend Alaska Airlines. Until recently they have been the only airline flying to/from Alaska. You may book your flights directly through their site at: https://www.alaskaair.com Delta does fly into Juneau and Sitka, but their service can be less consistent.
If you would like to travel by car or on foot, you can book travel on the Alaska Marine Highway which offers berthing as well as transportation. It will take additional time to make the trip, but is truly an amazing ride through the Inside Passage.
"We've been to Alaska many times, once on a large cruise. Viaggio redefined Alaska for us"
Fun is our goal and it's hard to enjoy your experience if you're worried about safety. We have the USCG inspect VIAGGIO annually in order to ensure everyone's safety.