Cheap Flights from San Francisco to San Diego from S$ 38

Frequently Asked Questions

• Which airlines offer the cheapest flights from San Francisco (SFO) to San Diego (SAN)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as S$ 38 on Cheapest nonstop routes (e.g. SFO to SAN on Fri, Aug 7), while Frontier Airlines offers Cheapest nonstop round-trips from S$ 45 departing on Wed, Jul 8 and returning on Tue, Jul 14.

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

  At the moment, you can catch a direct flight from San Francisco to San Diego with the following airlines, including: United Airlines American Airlines Alaska 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 Francisco (SFO) to San Diego (SAN)?

  It takes about 1 hour 41 minutes to fly from San Francisco (SFO) to San Diego (SAN).

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Francisco to San Diego 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 Francisco to San Diego?

  Based on Trip.com data in the past 4 weeks, there is 63 flight per week flying from San Francisco to San Diego. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/W/T/F/S -- UA2177 (10:44) American Airlines: S/M/T/-/-/-/- -- AA9341 (07:31)

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

  To find best deals on flights from San Francisco to San Diego, 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 Fri, Aug 7, with one-way flights priced at just S$ 38.
  · 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 Diego travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from San Francisco to San Diego to get the best price?

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

• Which upcoming date is the cheapest for flights from San Francisco to San Diego?

  After crunching the numbers on our June flight calendar, it's currently cheapest to fly from San Francisco to San Diego on June 22, 2026 with Frontier Airlines, with prices starting at S$ 26.

• Which airports can I fly through when travelling to San Diego from San Francisco?

  You can land at any one of the following hubs in San Diego, with San Francisco International Airport to San Diego International Airport (SFO-SAN) is by far the most common option on this route: San Diego International Airport (SAN) McClellan-Palomar Airport (CLD) Marine Corps Air Station Miramar (NKX).

• What is the time difference between San Francisco and San Diego?

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

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

  Tickets can only be changed or cancelled 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.