$29 Cheap Flights from San Francisco (SFO) to San Diego (SAN)

View $29 flight on Sun, Jun 1, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN)

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Find available prices by choosing your travel dates.

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

Prices were available within the past 7 days and start at $29 for one-way flights and $57 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Jun 9 - Wed, Jun 11
SFO
San Francisco
SAN
San Diego
$57 Roundtrip, just found
$57
Roundtrip
just found
Select Alaska Airlines flight, departing Mon, Jun 9 from San Francisco to San Diego, returning Wed, Jun 11, priced at $57 just found
Frontier Airlines
Mon, Jun 9 - Wed, Jun 11
SFO
San Francisco
SAN
San Diego
$63 Roundtrip, just found
$63
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Jun 9 from San Francisco to San Diego, returning Wed, Jun 11, priced at $63 just found
Alaska Airlines
Tue, Jul 29 - Sat, Aug 2
SFO
San Francisco
SAN
San Diego
$66 Roundtrip, found 1 hour ago
$66
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Jul 29 from San Francisco to San Diego, returning Sat, Aug 2, priced at $66 found 1 hour ago
Alaska Airlines
Tue, May 6 - Sat, May 10
SFO
San Francisco
SAN
San Diego
$67 Roundtrip, just found
$67
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, May 6 from San Francisco to San Diego, returning Sat, May 10, priced at $67 just found
Frontier Airlines
Thu, May 29 - Mon, Jun 2
SFO
San Francisco
SAN
San Diego
$68 Roundtrip, just found
$68
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, May 29 from San Francisco to San Diego, returning Mon, Jun 2, priced at $68 just found
Southwest Airlines
Tue, Apr 29 - Thu, Jul 31
SFO
San Francisco
SAN
San Diego
$69 Roundtrip, found 1 day ago
$69
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Apr 29 from San Francisco to San Diego, returning Thu, Jul 31, priced at $69 found 1 day ago
Frontier Airlines
Mon, Apr 28 - Sat, May 10
SFO
San Francisco
SAN
San Diego
$72 Roundtrip, found 5 hours ago
$72
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Mon, Apr 28 from San Francisco to San Diego, returning Sat, May 10, priced at $72 found 5 hours ago
Alaska Airlines
Tue, May 6 - Sat, May 10
SFO
San Francisco
SAN
San Diego
$73 Roundtrip, just found
$73
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, May 6 from San Francisco to San Diego, returning Sat, May 10, priced at $73 just found
United
Tue, May 27 - Thu, May 29
SFO
San Francisco
SAN
San Diego
$81 Roundtrip, found 1 hour ago
$81
Roundtrip
found 1 hour ago
Select United flight, departing Tue, May 27 from San Francisco to San Diego, returning Thu, May 29, priced at $81 found 1 hour ago
American Airlines
Mon, Apr 28 - Tue, Apr 29
SFO
San Francisco
CLD
Carlsbad
$159 Roundtrip, just found
$159
Roundtrip
just found
Select American Airlines flight, departing Mon, Apr 28 from San Francisco to Carlsbad, returning Tue, Apr 29, priced at $159 just found

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN) cost?
Pick up cheap return tickets starting from $51 from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SFO on May 13 2025 and touching down at SAN. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from SFO to SAN?
The cheapest flights from SFO to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN)?
Skip the stopovers and travel straight to San Diego Intl. Airport (SAN) from San Francisco Intl. Airport (SFO) with 4 carriers, including:

  • Alaska Airlines
  • United Airlines
  • Southwest Airlines

What is the cheapest airline that flies from SFO to SAN?
Currently, the cheapest carrier offering one-way flights from SFO to SAN is Alaska Airlines. You can book a seat on this route from $29. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SFO on July 16 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN)?
When taking off from San Francisco Intl. Airport (SFO), you’ll have your pick from an average of 17 daily direct flights to San Diego Intl. Airport (SAN).
What are the most popular departure times for flights from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN)?
Flights between SFO and SAN are busiest at 8 AM. For a more relaxed trip and potentially cheaper fares, choose a time outside the usual busy windows.
What day of the week has the most flights from SFO to SAN?
If you travel on a Sunday, you’ll get the widest range of options for flights from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN).
What is the earliest flight from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN)?
Catch the earliest flight at around 6:00AM UTC-8, departing from San Francisco Intl. Airport (SFO). You’ll be in the air for about 1h 36m, coming in to land at San Diego Intl. Airport (SAN) at approximately 7:36AM UTC-8.
How long does it take to fly from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN)?
The average flight time from SFO to SAN is 1 hour and 36 minutes, covering a distance of 450 mi.
What airline has the least delays from SFO to SAN?
Consider booking with American Airlines if you’d like to go straight from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN) without any delays. This airline has the best track record for punctuality, with an on-time performance of 100%. Want real-time updates? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN)?
Opt for a flight from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for San Diego from San Francisco Intl. Airport (SFO)?
Browse your flight options from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN). This is the only San Diego airport you can arrive at if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN) last-minute?
Last-minute fares from SFO to SAN are generally more expensive. To lock in the best rates, start looking for flights as early as possible. That said, if you’re flexible with your travel dates, it’s possible to find a cheap fare right before your journey.
Is it cheaper to book a SFO to SAN flight and hotel package?
You can save money by booking a SFO to SAN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one place. Once you’ve selected your ideal flights and accommodations, consider other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to San Diego Intl. Airport (SAN)?
You can usually cancel or reschedule your SFO to SAN flight. However, if it’s been more than 24 hours since booking, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more details on our Customer Service portal.
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