Alaska Airlines offers select 1-way fares with prices starting at $58.10, as seen on Travelzoo. That's the lowest price we could find for these routes by $45. This price is valid on flights departing from Boise (BOI) with arrival in Salt Lake City, UT, (SLC) on April 15. Book this travel deal by March 9 for flights from March 24 through April 28. Click here to see more routes.