Everything you need to know about getting to Sun Valley can be found at this website.
Airport Information
Hailey (SUN)
Preferred airport - 25 minutes to the Sun Valley Resort
Direct flights daily from:
Salt Lake (SLC)
Denver DEN,
Los Angeles (LAX)
San Francisco (SFO)
Seattle (SEA)
Boise (BOI)
2.5 hour drive to Sun Valley
Uber and rental cars available or the Sun Valley Resort has a daily shuttle that leaves at 3:30pm from the Boise airport.