Round trip Boise to San Diego for $117

Alaska Airlines, Southwest Airlines, and Expedia have round trip nonstop airfares between Boise ID and San Diego CA for $117. The fares are basic economy, allowing a personal item and a carry-on bag, with no seat selection or change options.

This fare is down from an estimated $164, representing a savings of about 29%. The availability spans multiple dates from September through March 2027, providing flexible options for travelers.

To book, choose your travel dates on Expedia, Southwest, or Alaska Airlines websites. These fares are ideal for travelers seeking affordable nonstop options, but note that they are limited to basic economy conditions without flexibility or seat selection.