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

You can find cheap one-way flights from AU$85 and cheap return flights AU$170 SFO to SAN with Expedia. One-way flights typically cost between AU$118 and AU$686 and return flights often range between AU$293 and AU$1,191. 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 SFO to SAN ticket fares go up or down.

The cheapest months to fly from San Francisco, CA (SFO) to San Diego, CA (SAN) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

There are 4 airlines offering direct flights from San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.). Here are some of the top carriers:

* United operates 76 direct flights from SFO to SAN every week.
* Southwest Airlines operates 46 direct flights from SFO to SAN every week.
* Frontier Airlines operates 8 direct flights from SFO to SAN every week.
* American Airlines operates 7 direct flights from SFO to SAN every week.

To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.) will differ from traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The cheapest months to fly from San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.) are typically February and March, with average return flights around AU$234. However, the most popular months for this route are September and October, meaning you'll find plenty of flight options during these times. If you're looking for the best value, aiming for February or March will help you save on fares.

You'll find approximately 19 nonstop flights per day from San Francisco International Airport (SFO) to San Diego International Airport (SAN). For even more choices, look at flights that include layovers, as there are around 94 connecting flights per day. Some common connection points include Los Angeles International Airport (LAX), Harry Reid International Airport (LAS), and Seattle - Tacoma International Airport (SEA).

The earliest flight from San Francisco International Airport (SFO) to San Diego International Airport (SAN) typically departs around 12:05 AM local time. This flight is operated by Delta and is a seasonal service, active only in May. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll generally find the most flights from San Francisco International Airport (SFO) to San Diego International Airport (SAN) on a Friday, with around 89 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, United, and Southwest Airlines. Fridays offer notably more flight options compared to other days of the week, making it a good day to consider if you need flexibility.

The most popular departure times for flights from San Francisco International Airport (SFO) to San Diego International Airport (SAN) are in the early morning, from 6am to 9am. Many major carriers, including Alaska Airlines, Southwest Airlines and United, offer flights during this window. Many travellers prefer this time as it allows you to arrive in San Diego early, giving you more time to enjoy your day.

A non-stop flight from San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.) typically takes about 1 hour 48 minutes, covering a distance of approximately 719 kilometers. If you opt for a flight with one stop, your travel time will be longer, usually around 6 hours. Flights with two or more stops generally take about 8 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.

Yes, you can fly business class or first class between SFO and SAN. Airlines that offer business class service on this route include:

* Frontier Airlines
* Alaska Airlines
* JetBlue Airways
* Delta
* American Airlines

First class cabins are available on Alaska Airlines, Delta, Hawaiian Airlines, American Airlines, and United.

It's easy to earn miles on a San Francisco, CA (SFO) to San Diego, CA (SAN) 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.

If you're planning to travel to San Diego from San Francisco Intl. (SFO), you can fly directly into San Diego Intl. (SAN). Some flights may connect through major hubs like Los Angeles Intl. (LAX), Harry Reid International Airport (LAS), or Denver Intl. (DEN) before reaching San Diego. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from San Francisco, CA (SFO) to San Diego, CA (SAN) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a San Francisco, CA (SFO) to San Diego, CA (SAN) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your San Francisco, CA (SFO-San Francisco Intl.) to San Diego, CA (SAN-San Diego Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.