Find Cheapest Airlines Flying from San Francisco to San Diego

Choose from 2 carriers that fly from San Francisco to San Diego, including Alaska Airlines, Frontier Airlines, Enjoy the cheapest tickets on this route with Hawaiian Airlines.
Alaska Airlines logo Alaska Airlines
Frontier Airlines logo Frontier Airlines
Airlines are determined based on actual purchased flight tickets from San Francisco to San Diego according to previous 12 months data from Trip.com.

Explore the cheapest flights from San Francisco to San Diego in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at AU$ 57, and round-trip direct tickets start at AU$ 103.

Displayed flight fares from San Francisco to San Diego are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

San Francisco to San Diego Flight Details

The distance between San Francisco and San Diego is approximately 720.29km. It takes around 1 hour 37 minutes on average to fly from San Francisco to San Diego. Based on Trip.com's data travel demand peaks in July. The off-season for travel is August.

Cheapest one-way flight priceAU$ 57
Cheapest return ticket priceAU$ 103
Off-season for travelAugust
Peak season for travelJuly
Flight distance720.29km
Average flight time1 hour 37 minutes
Popular airlineAlaska Airlines
Flight statistics for the San Francisco–San Diego route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from San Francisco to San Diego

What is the cheapest month for one-way flights from San Francisco to San Diego?

Average price of one-way flights from San Francisco to San Diego purchased by Trip.com users by month over the past 12 months.

According to Trip.com's data, the cheapest month for flights from San Francisco to San Diego is Feb, with an average price of AU$ 79. Conversely, the most expensive month is typically Dec, with an average price of up to AU$ 211.

AU$ 211
AU$ 145
AU$ 79
AU$ 13
  • AU$ 79
    Feb
  • AU$ 96
    Mar
  • AU$ 108
    Apr
  • AU$ 116
    May
  • AU$ 133
    Jun
  • AU$ 122
    Jul
  • AU$ 170
    Aug
  • AU$ 160
    Sep
  • AU$ 134
    Oct
  • AU$ 197
    Nov
  • AU$ 211
    Dec
  • AU$ 194
    Jan

What is the cheapest month for round-trip flights from San Francisco to San Diego?

Average price of round-trip flights from San Francisco to San Diego purchased by Trip.com users by month over the past 12 months.

According to historical data from Trip.com, the lowest prices for flights from San Francisco to San Diego are found during Feb, with an average price of AU$ 188. Conversely, the highest prices are found during Dec, with an average price of up to AU$ 345.

AU$ 345
AU$ 267
AU$ 188
AU$ 110
  • AU$ 188
    Feb
  • AU$ 230
    Mar
  • AU$ 256
    Apr
  • AU$ 228
    May
  • AU$ 194
    Jun
  • AU$ 249
    Jul
  • AU$ 311
    Aug
  • AU$ 229
    Sep
  • AU$ 207
    Oct
  • AU$ 271
    Nov
  • AU$ 345
    Dec
  • AU$ 251
    Jan

What's the cheapest day to fly from San Francisco to San Diego?

Data is based on the average flight price for each day of the week from San Francisco to San Diego on Trip.com over the past 12 months.

Based on Trip.com data from the past 12 months, the cheapest day to fly from San Francisco to San Diego is Tue, with average prices lower than on other days. Avoid Fri, as prices are usually highest then.

AU$ 175
AU$ 143
AU$ 110
AU$ 78
  • AU$ 127
    Mon
  • AU$ 110
    Tue
  • AU$ 138
    Wed
  • AU$ 133
    Thu
  • AU$ 175
    Fri
  • AU$ 127
    Sat
  • AU$ 154
    Sun

Flight FAQs

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

    Based on Trip.com data, Hawaiian Airlines offers one-way fares as low as AU$ 57 on Cheapest nonstop routes (e.g. SFO to SAN on Mon, Apr 13), while Alaska Airlines offers Cheapest nonstop round-trips from AU$ 103 departing on Thu, Feb 19 and returning on Sun, Feb 22.
  • At the moment, you can catch a direct flight from San Francisco to San Diego with the following airlines, including: Alaska Airlines Frontier Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 1 hour 37 minutes to fly from San Francisco (SFO) to San Diego (SAN).
  • 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.
  • Based on Trip.com data in the past 4 weeks, there is 108 flight per week flying from San Francisco to San Diego. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS2479 (08:22)
  • 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 Mon, Apr 13, with one-way flights priced at just AU$ 57.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hawaiian 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.
  • The cheapest months to fly from San Francisco to San Diego is August, when demand for travel is lower.
  • After crunching the numbers on our February flight calendar, it's currently cheapest to fly from San Francisco to San Diego on February 25, 2026 with Hawaiian Airlines, with prices starting at AU$ 52.
  • 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: McClellan-Palomar Airport (CLD) Marine Corps Air Station Miramar (NKX) San Diego International Airport (SAN).
  • The time difference between San Diego and San Francisco is 0h.
  • 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.

Trip.com Airline Insights on Flights from San Francisco toSan Diego

Which airlines offer the cheapest nonstop flights from San Francisco to San Diego?

Data is based on the average price of all nonstop flights from San Francisco to San Diego on Trip.com in the past 12 months.

Based on Trip.com data from the past 12 months, Frontier Airlines offers the cheapest nonstop flights from San Francisco to San Diego, with an average price of AU$ 98.

AU$ 45
AU$ 98
AU$ 152
AU$ 206
AU$ 259
Frontier Airlines
AU$ 98
Frontier Airlines
Hawaiian Airlines
AU$ 159
Hawaiian Airlines
Alaska Airlines
AU$ 165
Alaska Airlines
United Airlines
AU$ 209
United Airlines
American Airlines
AU$ 259
American Airlines

Which airlines operate the most flights from San Francisco to San Diego?

Data is based on the number of flights from San Francisco to San Diego operated by each airline on Trip.com in the past month.

Based on Trip.com data from the past month, Air Canada operates the most flights from San Francisco to San Diego, with 54 flight per week.

45
48
51
54
Air Canada
54
Air Canada
Virgin Australia
54
Virgin Australia
United Airlines
54
United Airlines
Alaska Airlines
49
Alaska Airlines
Hawaiian Airlines
48
Hawaiian Airlines
American Airlines
48
American Airlines

How many flights are there each day from San Francisco to San Diego?

The data is based on the flight numbers for each day of the week from San Francisco to San Diego within the Trip.com database over the past month.

Based on Trip.com data from the past month, the most flights from San Francisco to San Diego depart on Friday, and the fewest flights depart on Monday.

320
277
234
191
Highest
234
Mon
250
Tue
236
Wed
244
Thu
320
Fri
289
Sat
279
Sun