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

Frequently Asked Questions

• What are the cheapest flights from San Diego to San Francisco (SAN-SFO)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$30 on Cheapest nonstop routes (e.g. SAN to SFO on Thu, Apr 23), while Frontier Airlines offers Cheapest nonstop round-trips from US$55 departing on Thu, Apr 23 and returning on Sun, Apr 26.

• Which airlines offer direct flights from San Diego to San Francisco?

  At the moment, you can catch a nonstop flight from San Diego to San Francisco with the following airlines, including: United Airlines Frontier Airlines Alaska Airlines Hawaiian Airlines American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from San Diego to San Francisco?

  It takes about 1 hour 44 minutes to fly from San Diego to San Francisco.

• When is the best time to book flights from San Diego to San Francisco?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Diego to San Francisco is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from San Diego to San Francisco?

  Based on Trip.com data in the past 4 weeks, there is 101 flight per week flying from San Diego to San Francisco. You can check the weekly schedule for popular airlines on this route below: American Airlines: S/M/T/W/T/F/S -- AA9382 (08:12) Hawaiian Airlines: S/M/T/W/T/F/S -- HA6544 (08:12)

• How can I find the best deals on flights from San Diego to San Francisco?

  To find best deals on flights from San Diego to San Francisco, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Apr 23, with one-way flights priced at just US$30.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for San Francisco travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from San Diego (SAN) to San Francisco (SFO) the cheapest?

  The cheapest months to fly from San Diego to San Francisco is December, when demand for travel is lower.

• Which upcoming date is cheapest to fly from San Diego to San Francisco on?

  After crunching the numbers on our March flight calendar, it's currently cheapest to fly from San Diego to San Francisco on March 18, 2026 with Hawaiian Airlines, with prices starting at US$36.

• Which airports can I fly to for San Francisco from San Diego?

  You can land at any one of the following hubs in San Francisco, with San Diego International Airport to San Francisco International Airport (SAN-SFO) is by far the most common option on this route: San Francisco International Airport (SFO).

• Is there any time difference between San Diego and San Francisco?

  The time difference between San Francisco and San Diego is 0h.

• How do I change or cancel my ticket from San Diego to San Francisco?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.