Roundtrip Airfares: Sacramento, CA to/from San Diego, CA via SW/Alaska Airlines $77 (Travel Sept-Jan 2026)

Roundtrip Airfares: Sacramento, CA to/from San Diego, CA via SW/Alaska Airlines $77 (Travel Sept-Jan 2026). Thumb Score: +12. Alaska Airlines, Southwest Airlines and Expedia have round trip airfares traveling to and from Sacramento (SMF) and San Diego (SAN) for $77, nonstop. These are basic fares that only allow a personal item and a carry-on bag. There is no more free checked bag on Southwest. The first checked bag is $35. Travel Availability: Departs SMF: Sept 9-10, 16-17, 23-24, 30; Oct 1, 7-8, 14-15, 21-22, 28-29; Nov 4-5, 11-12, 18-19; Dec 2-3, 9-10, 16-17, 24, 31; Jan 6-7, 13-14, 20-21, 27-28.