AirHint found the following cheapest one-way flights from San Francisco (SFO) to San Diego (SAN) in April 2026 (see full year).
One-Way flights
| 09 Apr | Alaska Airlines | direct | |
| 03 Apr | United | direct | |
| 16 Apr | United | direct |
Also check the deals for return flights from San Francisco to San Diego in April.
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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.
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