Cheapest one-way flights from San Francisco to San Diego in May from $34

Best time to book flights for San Francisco (SFO) to San Diego (SAN) flights at AirHint

AirHint found the following cheapest one-way flights from San Francisco (SFO) to San Diego (SAN) in May 2025 (see full year).

One-Way flights

31 May Frontier Airlines direct
30 May Frontier Airlines direct
29 May Frontier Airlines direct
27 May United direct
28 May United direct
25 May United direct
26 May Alaska Airlines direct
24 May Alaska Airlines direct
22 May Frontier Airlines direct
21 May Frontier Airlines

Also check the deals for return flights from San Francisco to San Diego in May.

Skyscanner

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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