Frontier Airlines
Su, Mo, Th, and Fr
starting at $221
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from San Francisco to San Diego. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
In different months, ticket prices from San Francisco to San Diego vary: minimum — $28 (September 2026), maximum — $41 (August 2026). Typically, the flight costs $35–$41.
A non-stop flight is the most convenient and comfortable way to fly from San Francisco to San Diego, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Frontier Airlines
Su, Mo, Th, and Fr
starting at $221
The only airline operating direct flights from San Francisco to San Diego is Frontier Airlines. Flights operate on Sunday, Monday, Thursday, and Friday.
San Francisco — San Diego
08/08/2026
Departure
Direct flight
UA5508
starting at $492
San Francisco — San Diego
08/13/2026
Departure
Direct flight
AS2058
starting at $181
San Francisco — San Diego
08/14/2026
Departure
Direct flight
WN4532
starting at $239
San Francisco — San Diego
08/22/2026
Departure
Direct flight
AS3099
starting at $142
San Francisco — San Diego
09/07/2026
Departure
Direct flight
UA442
starting at $153
San Francisco — San Diego
09/18/2026
Departure
Direct flight
UA1561
starting at $241
San Francisco — San Diego
08/15/2026
Departure
Direct flight
UA1257
starting at $219
San Francisco — San Diego
08/18/2026
Departure
Direct flight
AS3482
starting at $144
starting at $153
starting at $142
starting at $64
starting at $28
The route San Francisco — San Diego is served by many carriers — 4 in total, including United Airlines, Alaska Airlines, Southwest Airlines, and Frontier Airlines. This gives passengers wide opportunities: from finding the lowest fare (from $28) to selecting flights by schedule or service class. Our service aggregates data from multiple booking systems so you can compare offers in one place. This saves time and money: no need to check dozens of sites — just pick the right option and book online.
The cheapest flight ticket from San Francisco to San Diego according to data for the last 48 hours costs $28
Often the best time to buy tickets from San Francisco to San Diego is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from San Francisco to San Diego can be found flying in these months: September, August.
The fastest flights from San Francisco to San Diego start from 1 hour 35 minutes in the air.
The following airlines operate direct flights on the route San Francisco — San Diego: United Airlines, Alaska Airlines, Southwest Airlines
The cheapest one-way flight from San Francisco to San Diego departs on 09/06/2026, is operated by Frontier Airlines and costs $28
The cheapest roundtrip flight from San Francisco to San Diego departs on 08/22/2026, is operated by Frontier Airlines and costs $58
Fastest flight from San Francisco to San Diego takes 1h 35m
There are direct flights on this route 5 days a week: Mo, Tu, Th, Fr, and Sa
The distance between San Francisco and San Diego is 737km (457 miles). The average flight duration is 1h 44m. There are 110 direct flights from San Francisco to San Diego. San Francisco and San Diego are in the same time zone. Flights from San Francisco begin at 5:50 AM. The latest flight from San Francisco departs at 10:42 PM
We couldn't find any special offers for flights from San Francisco to San Diego