Sun Valley Resort Golf Course is an 18-hole resort golf course in Sun Valley, Idaho, built in 1947 and designed by Robert Trent Jones, Jr.. It sits in the $$$$ (splurge) price range for golf in Idaho. The season runs Apr 15 to Oct 31. Tee times can be booked 2 days in advance. Guests are welcome.
Details like fees and seasons change, so call the course before you head out.