Flights San Diego → San Francisco — September 14, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Monday, September 14, 2026 on the San Diego–San Francisco route: 1 stop itinerary (2 flights) via Denver International (DEN), from San Diego International (SAN) to San Francisco International (SFO), first flight Frontier Airlines F94990, departs 4:54 PM, arrives 12:14 AM the next day, total travel time 7h 20m including layovers, flight time 5h 13m (layovers excluded), $109 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 4, 2026 and read by AirSource on September 10, 2026, 20:49 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Frontier Airlines F93381, from San Diego International (SAN) to San Francisco International (SFO), departs 10:28 AM, arrives 12:25 PM, direct, 1h 57m, $118 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable.