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Cheap flights from San Francisco to San Diego from £30

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

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 Thursday or Monday and return on a Tuesday

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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 11 November 2025.

Thu 11/1207:00SFO - SAN
Nonstop1h 39mAlaska Airlines
Sun 14/1206:15SAN - SFO
Nonstop1h 51mAlaska Airlines
Deal found 8/11£58
Mon 8/1206:30SFO - SAN
1 stop12h 45mFrontier
Mon 15/1220:10SAN - SFO
Nonstop1h 53mFrontier
Deal found 10/11£65
Sun 14/1206:30SFO - SAN
Nonstop1h 36mUnited Airlines
Sun 14/1209:54SAN - SFO
Nonstop1h 47mUnited Airlines
Deal found 9/11£68
Tue 9/1218:13SFO - SAN
Nonstop1h 39mAlaska Airlines
Tue 9/1220:59SAN - SFO
Nonstop1h 49mAlaska Airlines
Deal found 10/11£70
Sun 7/1209:00SFO - SAN
Nonstop1h 40mUnited Airlines
Tue 6/119:52SAN - SFO
Nonstop1h 47mUnited Airlines
Deal found 10/11£74
Tue 9/1210:20SFO - SAN
Nonstop1h 39mMultiple Airlines
Tue 16/1206:34SAN - SFO
1 stop17h 50mMultiple Airlines
Deal found 11/11£74
Wed 3/1207:00SFO - SAN
Nonstop1h 39mAlaska Airlines
Sat 6/1207:15SAN - SFO
Nonstop1h 55mAlaska Airlines
Deal found 10/11£81
Tue 9/1206:30SFO - SAN
1 stop16h 16mFrontier
Tue 16/1206:34SAN - SFO
1 stop17h 50mFrontier
Deal found 11/11£84
Sun 7/1205:50SFO - SAN
Nonstop1h 30mSouthwest
Tue 9/1213:15SAN - SFO
2 stops6h 55mSouthwest
Deal found 10/11£85
Sat 6/1214:50SFO - SAN
Nonstop1h 39mAlaska Airlines
Tue 9/1220:59SAN - SFO
Nonstop1h 49mAlaska Airlines
Deal found 10/11£89
Tue 9/1210:20SFO - SAN
Nonstop1h 39mHawaiian Airlines
Tue 16/1212:43SAN - SFO
1 stop4h 41mHawaiian Airlines
Deal found 11/11£93
Thu 11/1207:40SFO - SAN
Nonstop1h 30mSouthwest
Sat 13/1219:00SAN - SFO
Nonstop1h 40mSouthwest
Deal found 8/11£94

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 11 November 2025.

Round-trip from

£58

One-way from

£30

Popular in

November

Cheapest in

January

Average price

£142
Alaska Airlines
  • Alaska Airlines
  • 3/12-15/12
  • Nonstop
  • 3h 30m total
  • San Francisco to San Diego
Search Deals
United Airlines
  • United Airlines
  • 6/12
  • Nonstop
  • 1h 38m total
  • San Francisco to San Diego
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£12 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 11 November 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

Sun 7/12

07:00-08:39

Nonstop1h 39m

San Diego

Tue 6/1

06:15-08:15

Nonstop2h 00m

£74

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 3/12

07:00-08:39

Nonstop1h 39m

San Diego

Sat 6/12

07:15-09:10

Nonstop1h 55m

£81

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 7/2

09:16-10:55

Nonstop1h 39m

San Diego

Sat 7/2

14:51-16:32

Nonstop1h 41m

£84

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sun 7/12

05:50-07:20

Nonstop1h 30m

San Diego

Tue 9/12

13:15-20:10

2 stops6h 55m

£85

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 8/4

07:00-08:39

Nonstop1h 39m

San Diego

Tue 28/4

17:30-19:16

Nonstop1h 46m

£89

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 6/12

14:50-16:29

Nonstop1h 39m

San Diego

Tue 9/12

20:59-22:48

Nonstop1h 49m

£89

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 9/4

07:00-08:39

Nonstop1h 39m

San Diego

Sat 11/4

21:59-23:46

Nonstop1h 47m

£112

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 24/3

07:00-08:39

Nonstop1h 39m

San Diego

Wed 25/3

17:30-23:06

1 stop5h 36m

£119

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 29/1

13:13-14:52

Nonstop1h 39m

San Diego

Sun 1/2

09:55-11:44

Nonstop1h 49m

£119

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 24/3

19:00-23:51

1 stop4h 51m

San Diego

Wed 25/3

10:00-15:13

1 stop5h 13m

£119

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 22 results
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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 return 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 return flight from San Francisco to San Diego. Price data was last updated on 7 November 2025.

Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, December is the cheapest month in which you can book a flight from San Francisco to San Diego (average of £17). Flying from San Francisco to San Diego in September is currently the most expensive (average of £49). 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 11 November 2025.

It’s typically best to fly out from San Francisco to San Diego in the morning. Doing so could potentially save you 64% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost for a return flight 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 11 November 2025.
Get a feel of what it's like to fly with Alaska Airlines, Hawaiian Airlines, andFrontier from San Francisco to San Diego by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
11,270 reviews
Check prices

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

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
11,270 reviews
Alaska Airlines
8.0
Very Good
11,270 reviews
Check prices

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

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
2,806 reviews
Alaska Airlines
8.0
Very Good
11,270 reviews
Check prices

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

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
3,113 reviews
Alaska Airlines
8.0
Very Good
11,270 reviews
Check prices

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

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?

    To fly from San Francisco to San Diego, you need to book a flight from San Francisco (SFO) to San Diego (SAN). Nonstop flights to San Diego from San Francisco take 1h 37m on average. When it comes time to book airfare, you have a few options: there are 62 outbound flights from San Francisco to San Diego offered by 3 different airlines.

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

    The San Francisco to San Diego flight path was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    There are many flights that can get you from San Francisco to San Diego in 1h 30m. Fly via Alaska Airlines, Southwest, or United Airlines to get the fastest option. San Francisco and San Diego are separated by a distance of 446 mi. Most flights are nonstop.

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

    Frontier, at £28, was found to be the cheapest airline from San Francisco to San Diego.Alternate airlines flying return to your destination include Alaska Airlines and Hawaiian Airlines. Frontier is 75% cheaper than the average price of flights available within the next 90 days to this destination.

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

    No one likes to see their flight delayed. When booking a flight from San Francisco to San Diego consider choosing Air China (88%), Frontier (88%) or Virgin Australia (81%) as they are the most reliable in getting you off to your destination on time.

  • 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 holiday 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, December is the cheapest month in which you can book a flight from San Francisco to San Diego (average of £17). Flying from San Francisco to San Diego in September is currently the most expensive (average of £49). 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

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon

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Alternative routes for San Francisco to San Diego

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Top 3 airlines flying from San Francisco to San Diego

Discover the top 3 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 858,174 searches. Data last updated 11 November 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£28Average£29FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Alaska AirlinesCheapest£41Average£124FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Hawaiian AirlinesCheapest£65Average£86FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from San Francisco to San Diego?

Cheapflights makes it easy to find San Francisco to San Diego flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to San Diego?

Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco to San Diego for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from San Francisco to San Diego with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Francisco to San Diego, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from San Francisco to San Diego become cheaper?

Not ready to book yet? You can track prices for flights from San Francisco to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.

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