Cheapest one-way flights from San Francisco to San Diego in May from 18€

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

12 May Frontier Airlines direct
10 May Frontier Airlines direct
02 May Frontier Airlines direct
11 May Frontier Airlines direct
05 May Frontier Airlines direct
08 May Frontier Airlines direct
01 May Frontier Airlines direct
14 May Frontier Airlines
06 May Frontier Airlines
22 May Frontier Airlines direct

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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