$28 Cheap Flights from San Francisco (SFO) to San Diego (SAN)

You can find cheap one-way flights from $28 and cheap return flights from $56 San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.) with Expedia. One-way flights usually range from $80 to $674, and return flights typically cost between $165 and $1241. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

March is the cheapest month to fly from San Francisco to San Diego, with average round-trip fares around $156. This price is about 12% lower than the average throughout the year, as demand tends to be lower in early spring. Other affordable months to consider are February and May.*Averages based on flights available on Expedia in the last year.

Choose from 3 airlines operating direct flights from SFO to SAN:

• United operates around 72 direct flights from SFO to SAN every week
• Hawaiian Airlines operates around 16 direct flights from SFO to SAN every week
• Frontier Airlines operates around 7 direct flights from SFO to SAN every week

American Airlines is one of the cheapest airlines offering nonstop flights from San Francisco, CA (SFO) to San Diego, CA (SAN), with round-trip tickets starting from around $247. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.

When flying from San Francisco (SFO) to San Diego (SAN), February and March are the best months to consider. In February, return flights are around $156, making it an excellent budget option. March is also popular, offering pleasant weather and a high volume of flight choices. These months provide a great combination of affordability and travel experience.*Prices based on flights available on Expedia in the last year.

Business class seats are offered on the SFO to SAN route with JetBlue Airways.First class cabins are available on:

• Delta Air Lines
• United Airlines
• American Airlines
• Hawaiian Airlines

A direct, return business class ticket from San Francisco, CA (SFO) to San Diego, CA (SAN) typically costs between $572 - $1,018. A non-stop, one-way business class flight is usually around $277 - $441 per adult in economy/coach class. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.

It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.