Wanderlust World Wanderlust World The price of a ticket to Idaho — whether by air, rail, or bus — varies entirely based on your starting location, travel dates, mode of transport, and booking time. Flights to Boise (BOI) from major U.S. hubs range from $150 to $600+ round-trip. Amtrak's Empire Builder serves Sandpoint; Greyhound and regional buses connect nearby states. Without a departure city, no estimate is possible. Use travel search engines with your origin and dates for accurate pricing.