● Deals from
● Sweeping every destination…
$18usually $66−73%19 Sept 2026 · direct · score 96/100 · Floor
Why so cheap?
Researching this route’s pricing right now — checking season, sales, capacity and route news…
Fares by departure date
Today’s fare is cheaper than 94% of the 17 fares tracked for this route.
Questions people ask about this route
- What is the lowest price for a flight from San Francisco to San Diego right now?
- The lowest price our scan found today (2026-08-29) is $18 one-way fare, departing 19 Sept 2026, direct. Fares move constantly — the link below re-checks live availability on Aviasales.
- Is $18 a good price for a San Francisco to San Diego flight (SFO→SAN)?
- Yes by the data: this route usually costs about $66 (midpoint of Google Flights' typical price range), so $18 is 73% below usual and cheaper than 94% of the 17 fares tracked for this route. FareFloor's deal score for it is 96/100 as of 2026-08-29.
- When is the cheapest time to fly from San Francisco to San Diego in the coming months?
- Across the departure windows our 2026-08-29 scan compared, the lowest-priced departure found is 19 Sept 2026 at $18 one-way fare. Method: we sweep this origin's destinations several times a day via Google Flights data and keep the cheapest round-trip window per route — a cheaper window can appear any day, so treat this as today's answer, not a permanent one.
- Why is it so cheap to fly from San Francisco to San Diego right now?
- Flights from San Francisco to San Diego departing 19 September 2026 are currently about 73% cheaper than usual — $18 against a usual level of roughly $66 — because Ultra‑low‑cost carriers are slashing fares in a short‑term fare war, driving round‑trip prices to about $20 on the high‑capacity SFO–SAN route. (Researched 29 August 2026 from current web sources.)
- Is there a direct flight from San Francisco to San Diego at this price?
- Yes — the $18 fare found today is a direct flight.