What is the cheapest flight from San Francisco right now?

The cheapest round trip from San Francisco right now is $46 to San Diego, Sep 28 → Oct 1 (3 nights).

How often are San Francisco flight prices updated?

Prices are re-swept daily; every fare on this page was found within the last 24 hours.

Cheap flights from San Francisco (SFO) from $46

Fare calendar

August 2026

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best day · $46

$46 $71 $110+

Best deals

Price watch

↓26% Saguaro National Park

↓24% Carlsbad Caverns National Park

now $182 · was $238

$182BOOK

+17 more below typical

Cheap flights from San Francisco (SFO) — 292 destinations, priced through Feb 2027