Roundtrip Boston to San Diego Nonstop Airfares

These roundtrip airfares are available on Alaska, JetBlue, and Delta Air Lines. This offer expires on February 28, 2026.

Travel availability includes:

• Departures from Boston (BOS): November 1, 3-5, 8-13, 15-19; December 6, 9-10, 13, 16; January 7, 10, 13-14, 17, 20-21, 24, 27-28, 31; February 3-4, 7, 10-11
• Departures from San Diego (SAN): November 1-8, 10-15, 17-18; December 3, 6, 9-10, 13, 16-17; January 7, 10, 13-14, 17, 20-21, 24, 27-28, 31; February 3-4, 7, 10-11

These are basic economy fares, which include a personal item and a carry-on bag. Seat selection is not included, and changes are not permitted. If traveling with children, JetBlue and Alaska Airlines will seat families together according to their policies. Delta Air Lines determines family seating on a case-by-case basis.