$29 Cheap United flights San Diego (SAN) to San Francisco (SFO)

Set the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines round-trip flights from $52 from SAN to SFO. Affordable one-way options from $29 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for return or one-way flights to San Francisco in February or April. You could find cheaper fares with United Airlines during these quieter months.

Begin your search one to three months before your departure to find cheaper fares on United Airlines flights from San Diego Intl. Airport (SAN) to San Francisco Intl. Airport (SFO). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

United Airlines operates direct flights from San Diego Intl. Airport (SAN) to San Francisco Intl. Airport (SFO), with 41 departures each week. Simply apply the “Nonstop” and “Airline” filters during your search on Expedia to show all direct United Airlines flights to SFO.

Leave San Diego Intl. Airport (SAN) for San Francisco Intl. Airport (SFO) on a nonstop United Airlines flight, and you’ll be in the air for approximately 1h 45m.

United Airlines has the most flights from San Diego Intl. Airport (SAN) to San Francisco Intl. Airport (SFO) on Saturday. With up to 6 daily departures, you’ll get the most options and flexibility on this day.

The first United Airlines flight from SAN to SFO takes off at 6:15AM UTC-8, touching down at 8:00AM UTC-8. If you want to set off later in the day, the last United Airlines flight leaves SAN at 7:43PM UTC-8 and lands at SFO at 9:28PM UTC-8. Flying before midday is often a good option as morning flights tend to experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

San Francisco Intl. Airport (SFO) is the main San Francisco hub for United Airlines flights from San Diego Intl. Airport (SAN). Norman Y. Mineta San Jose Intl. Airport (SJC) and Oakland Intl. Airport (OAK) are alternative possibilities. When organizing your break with Expedia, choose the “All Airports” option for your destination to see everything that’s available.

A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to fly from SAN to SFO with United Airlines. Plus, when you sign up to our One Key™ program, you can receive OneKeyCash™* in addition to any airline loyalty program earnings. It’s yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

United Airlines usually flies Boeing 737 MAX 8 planes for flights from San Diego Intl. Airport (SAN) to San Francisco Intl. Airport (SFO). This airline also operates the Boeing 737-800 on this route. Bear in mind that aircraft type can change depending on operational needs, so the plane you catch could be different on your travel date.

It’s generally possible to cancel or change your flight, although additional charges may apply if you made your booking over 24 hours ago. Need to keep your options open? Make use of our “Changes included” and “No cancel fee” filters to find flights that won’t penalize you if you need to revise your plans. To make modifications, visit “Trips,” select your flight and click on “Manage Booking” for further information.