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$39+ Cheap flights from San Francisco to San Diego (SFO - SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to San Diego are usually found in January or February, booked 72 days in advance, depart on a Saturday or Tuesday and return on a Friday

Cheap flight deals from San Francisco to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$77
(United Airlines)

One-way from

$39
(Hawaiian Airlines)

Popular in

December

Cheapest in

January

Average price

$155

Good round-trip deal

$114 or less

Good one-way deal

$71 or less
From San Francisco to San Diego
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One-way flight from San Francisco to San Diego
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from San Francisco to San Diego.
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Price to beat on a one-way flight from San Francisco to San Diego.
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Find flight deals from San Francisco to San Diego

Cheapest flights from San Francisco to San Diego
Explore the most affordable flight options available from San Francisco to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/149:05 pmSFO - SAN
Nonstop1h 39mUnited Airlines
Tue 10/217:28 pmSAN - SFO
Nonstop1h 40mUnited Airlines
Deal found 9/15$77
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/612:17 pmSFO - SAN
Nonstop1h 40mFrontier
Fri 10/105:28 pmSAN - SFO
Nonstop1h 45mFrontier
Deal found 9/15$78
This Trip.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/209:59 pmSFO - SAN
Nonstop1h 41mFrontier
Sat 9/277:20 pmSAN - SFO
Nonstop1h 49mFrontier
Deal found 9/15$79
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/279:59 pmSFO - SAN
Nonstop1h 41mFrontier
Sat 10/47:20 pmSAN - SFO
Nonstop1h 49mFrontier
Deal found 9/17$80
This CheapOair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/132:53 pmSFO - SAN
Nonstop1h 39mFrontier
Mon 10/205:28 pmSAN - SFO
Nonstop1h 45mFrontier
Deal found 9/16$81
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/313:14 pmSFO - SAN
Nonstop1h 43mFrontier
Mon 11/312:12 pmSAN - SFO
Nonstop1h 52mFrontier
Deal found 9/15$82
This Trip.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:00 amSFO - SAN
Nonstop1h 41mMultiple Airlines
Sat 10/111:01 pmSAN - SFO
Nonstop1h 54mMultiple Airlines
Deal found 9/17$83
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:14 pmSFO - SAN
Nonstop1h 43mFrontier
Mon 11/1712:12 pmSAN - SFO
Nonstop1h 52mFrontier
Deal found 9/15$84
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/49:59 pmSFO - SAN
Nonstop1h 41mFrontier
Fri 10/105:28 pmSAN - SFO
Nonstop1h 45mFrontier
Deal found 9/15$85
This Mytrip deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/12:19 pmSFO - SAN
Nonstop1h 39mFrontier
Sat 11/82:13 pmSAN - SFO
Nonstop1h 50mFrontier
Deal found 9/17$88

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from San Francisco to San Diego that are best for you.

Fly from

San Francisco

Fly to

San Diego

Route

Depart

Return

Price

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 10/23

5:40 am-7:10 am

Nonstop1h 30m

San Diego

Mon 10/27

6:45 pm-8:20 pm

Nonstop1h 35m

$77

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 10/11

7:10 pm-8:49 pm

Nonstop1h 39m

San Diego

Thu 10/16

8:08 pm-9:48 pm

Nonstop1h 40m

$77

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 10/11

7:10 pm-8:49 pm

Nonstop1h 39m

San Diego

Tue 10/21

4:07 pm-5:45 pm

Nonstop1h 38m

$77

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 12/5

10:30 am-12:00 pm

Nonstop1h 30m

San Diego

Sun 12/7

7:00 am-8:45 am

Nonstop1h 45m

$81

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 10/9

10:36 pm-12:15 am

Nonstop1h 39m

San Diego

Tue 10/14

8:08 pm-9:48 pm

Nonstop1h 40m

$95

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 10/16

6:45 am-8:29 am

Nonstop1h 44m

San Diego

Tue 10/21

12:18 pm-2:01 pm

Nonstop1h 43m

$97

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 10/18

7:00 am-12:40 pm

1 stop5h 40m

San Diego

Mon 10/20

8:55 pm-10:35 pm

Nonstop1h 40m

$97

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 10/21

5:30 am-10:25 am

1 stop4h 55m

San Diego

Fri 10/24

12:55 pm-2:40 pm

Nonstop1h 45m

$97

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 10/14

5:30 am-10:25 am

1 stop4h 55m

San Diego

Tue 10/21

10:35 am-12:20 pm

Nonstop1h 45m

$97

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 12/4

5:30 am-9:55 am

1 stop4h 25m

San Diego

Mon 12/8

7:00 am-8:45 am

Nonstop1h 45m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 22 results
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The best insider tips for San Francisco to San Diego flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to San Diego trip
Airlines
Frontier

Frontier's UpFront Plus guarantees an empty middle seat, ideal for extra space.


Frontier charges for carry-ons; add during booking for lower fees, essential for budget planning.

Read more about Frontierby Marisa Garcia
United Airlines

United's Economy Plus offers extra legroom, perfect for added comfort on short flights.


Basic Economy restricts carry-ons, but Premier members are exempt, ideal for frequent flyers.

Read more about United Airlinesby Harriet Baskas
Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails, ideal for a short flight.


Saver Fare allows a carry-on, but no seat selection in advance, suitable for budget travelers.

Read more about Alaska Airlinesby Robert Schrader
Southwest

Enjoy free snacks and non-alcoholic beverages, plus a free drink on special occasions.


Southwest offers free messaging and high-speed Wi-Fi for a fee on all flights.

Read more about Southwestby Marisa Garcia
Airports
SFO

For a quick security check, use the mezzanine level checkpoint at Harvey Milk Terminal 1, accessible from the Terminal 1 AirTrain station.

Read more about SFOby Harriet Baskas
SAN

Use the free San Diego Flyer shuttle for convenient transport between SAN and the Old Town Transit Center every 20-30 minutes.

Read more about SANby Blane Bachelor
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and Southwest

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more

Best time to book a flight from San Francisco to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to San Diego

How far ahead should I book a flight from San Francisco to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to San Diego. Price data was last updated on September 12, 2025.

The price you pay for your flight from San Francisco to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 72 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Francisco to San Diego?

Currently, August is the cheapest month in which you can book a flight from San Francisco to San Diego (average of $286). Flying from San Francisco to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to SAN?

Find hourly flight availability from San Francisco to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to San Diego in the morning. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from San Francisco to San Diego?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to San Diego. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their San Francisco to San Diego flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from San Francisco to San Diego?

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated September 17, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Hawaiian Airlines from San Francisco to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,729 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,173 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from San Francisco to San Diego?

    If you wish to fly to San Diego from San Francisco, then you need to book flights from San Francisco to San Diego. There are 75 flights from San Francisco (SFO) to San Diego (SAN) per day to choose from. Flights to San Diego from San Francisco are available from 8 different airlines, which means you should have some options if you want to compare airfare deals. 1h 30m is how long a nonstop flight from San Francisco to San Diego typically takes.

  • How popular is this San Francisco to San Diego flight route?

    Flights from San Francisco to San Diego have been viewed 204 times in the past calendar month.

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

    Airlines like Southwest and United Airlines fly from San Francisco to San Diego in about 1h 30m. The time it takes to get you to your destination is usually consistent. San Francisco and San Diego are separated by a distance of 446 mi. All flights are typically nonstop.

  • What are the cheapest airlines flying from San Francisco to San Diego round-trip?

    Flying on Spirit Airlines is currently your cheapest option to San Diego, with prices starting at $28. Additional round-trip tickets that might be worth considering are offered by Frontier and Hawaiian Airlines, with the lowest prices starting at $37 and $38, respectively. These flights start at 80% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from San Francisco to San Diego one-way?

    $39 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on Alaska Airlines and United Airlines, with prices starting from $39 and $39, respectively.

  • What are the most reliable airlines from San Francisco to San Diego?

    Before booking your flight to San Diego from San Francisco, check out the most reliable airlines to get you to your destination on time: Air China (88%), Air New Zealand (79%), Emirates( 78%).

  • What are the cheapest flights from San Francisco to San Diego?

    Looking for the cheapest flight from San Francisco to San Diego? While on average our users pay $362, our data indicates the cheapest price to be $38. The most popular route (San Francisco - San Diego), is priced around $62.

  • Can I find deals for flights from San Francisco to San Diego that include hotel bookings?

    Yes. In addition to deals on San Francisco to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to San Diego.

  • Can I find deals for business class flights from San Francisco to San Diego?

    Yes. Cheapflights offers flight deals from San Francisco to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to San Diego?

    Currently, August is the cheapest month in which you can book a flight from San Francisco to San Diego (average of $286). Flying from San Francisco to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City

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Alternative routes for San Francisco to San Diego

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Top 8 airlines flying from San Francisco to San Diego

Discover the top 8 airlines that operate flights from San Francisco to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$28Average$98FlexibilityNo cancel feeOn-time65%
FrontierCheapest$37Average$103FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$38Average$149FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$57Average$180FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$58Average$192FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$78Average$188FlexibilityNo cancel feeOn-time63%
DeltaCheapest$98Average$196FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$177Average$316FlexibilityNo cancel feeOn-time71%

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