Cheapest return SFO–SAN flights, August

AirHint found the following cheapest return flights from San Francisco (SFO) to San Diego (SAN) in August 2026 (see full year).

Return flights

01 Aug - 11 Aug Frontier Airlines direct
01 Aug - 04 Aug Frontier Airlines direct
23 Aug - 27 Aug Frontier Airlines direct
17 Aug - 24 Aug Frontier Airlines direct
19 Aug - 26 Aug Frontier Airlines direct
18 Aug - 21 Aug Frontier Airlines direct
13 Aug - 20 Aug Alaska Airlines direct
13 Aug - 17 Aug United direct
16 Aug - 23 Aug Frontier Airlines direct
17 Aug - 21 Aug Frontier Airlines direct
29 Aug - 07 Sep Frontier Airlines direct

Also check the deals for one-way flights from San Francisco to San Diego in August.

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