Roundtrip San Francisco to San Diego Nonstop Flights

No special codes or coupons are required to get these roundtrip flights. This deal is available for travel through May 21, 2026. This offer expires on May 31, 2026.

These roundtrip airfares are with Alaska Airlines, Southwest Airlines, and United Airlines. These are basic economy fares. On United, you may have a personal item. On Southwest and Alaska, you may have a personal item and a carry-on bag. If you are traveling with children on United or Alaska, you will be seated together as per their policy.

Travel Availability

• Departs SFO: February 10-12, 16-19, 21, 23-26; March 2-5, 7, 9-12, 14, 16-19, 23-25, 30-31; April 1-2, 6-9, 11, 13-16, 18, 20-23, 25, 27-30; May 2, 4-7, 9, 11-14, 16, 18-21
• Departs SAN: February 10-12, 14, 17-19, 24-26, 28; March 2-5, 7, 9-12, 14, 17-18, 23-26, 31; April 1-2, 4, 6-9, 14-16, 18, 21-23, 25, 27-30; May 2, 4-7, 9, 12-14, 16, 18-21