Cheapest return flights from San Diego to San Francisco in September from $144
AirHint found the following cheapest return flights from San Diego (SAN) to San Francisco (SFO) in September 2025 (see full year).
Return flights
| 27 Sep - 29 Sep | United | direct | |
| 18 Sep - 21 Sep | Hawaiian Airlines | direct | |
| 26 Sep - 28 Sep | Alaska Airlines | direct | |
| 27 Sep - 28 Sep | Hawaiian Airlines | direct |
Also check the deals for one-way flights from San Diego to San Francisco in September.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
