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Cheap flights from San Francisco to San Diego from £29

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 27/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
4 Jan — 11 Jan1
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

Cheap flight deals from San Francisco to San Diego

Enter your travel dates to find the best prices.

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 5 December 2025.

Wed 31/1222:45SFO - SAN
Nonstop1h 43mUnited Airlines
Tue 6/106:15SAN - SFO
Nonstop1h 45mUnited Airlines
Deal found 4/12£73
Wed 17/1207:00SFO - SAN
Nonstop1h 39mAlaska Airlines
Wed 7/120:59SAN - SFO
Nonstop1h 48mAlaska Airlines
Deal found 3/12£80
Wed 17/1207:00SFO - SAN
Nonstop1h 39mAlaska Airlines
Thu 8/114:51SAN - SFO
Nonstop1h 41mAlaska Airlines
Deal found 3/12£82
Wed 31/1207:00SFO - SAN
Nonstop1h 51mAlaska Airlines
Wed 7/114:51SAN - SFO
Nonstop1h 41mAlaska Airlines
Deal found 4/12£88
Tue 30/1222:16SFO - SAN
Nonstop1h 35mAlaska Airlines
Tue 13/116:00SAN - SFO
Nonstop1h 48mAlaska Airlines
Deal found 3/12£95
Tue 30/1222:16SFO - SAN
Nonstop1h 35mAlaska Airlines
Thu 8/114:51SAN - SFO
Nonstop1h 41mAlaska Airlines
Deal found 4/12£97
Tue 16/1219:47SFO - SAN
Nonstop1h 34mAlaska Airlines
Sat 10/120:59SAN - SFO
Nonstop1h 48mAlaska Airlines
Deal found 4/12£99
Mon 29/1222:45SFO - SAN
Nonstop1h 30mUnited Airlines
Wed 7/109:55SAN - SFO
Nonstop1h 49mUnited Airlines
Deal found 2/12£100
Tue 16/1214:50SFO - SAN
Nonstop1h 39mAlaska Airlines
Thu 8/114:51SAN - SFO
Nonstop1h 41mAlaska Airlines
Deal found 3/12£101
Tue 16/1207:00SFO - SAN
Nonstop1h 39mAlaska Airlines
Wed 17/1220:59SAN - SFO
Nonstop1h 49mAlaska Airlines
Deal found 3/12£103
Wed 17/1208:09SFO - SAN
Nonstop1h 37mAlaska Airlines
Tue 6/122:19SAN - SFO
1 stop10h 28mAlaska Airlines
Deal found 3/12£105
Tue 30/1205:35SFO - SAN
Nonstop1h 30mSouthwest
Tue 6/113:50SAN - SFO
Nonstop1h 40mSouthwest
Deal found 3/12£109

Find 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 5 December 2025.

Round-trip from

£62

One-way from

£29

Popular in

November

Cheapest in

January

Average price

£123
United Airlines
  • United Airlines
  • 9/1-12/1
  • Nonstop
  • 3h 24m total
  • San Francisco to San Diego
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 27/1
  • Nonstop
  • 1h 34m total
  • San Francisco to San Diego
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 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 5 December 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

Fri 23/1

07:00-08:35

Nonstop1h 35m

San Diego

Mon 26/1

20:59-22:47

Nonstop1h 48m

£62

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 10/1

12:50-19:20

1 stop6h 30m

San Diego

Tue 13/1

13:05-20:15

2 stops7h 10m

£86

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 15/1

07:00-08:35

Nonstop1h 35m

San Diego

Sat 17/1

14:56-21:55

1 stop6h 59m

£88

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 18/2

11:30-20:42

1 stop9h 12m

San Diego

Fri 20/2

22:09-23:59

Nonstop1h 50m

£90

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 25/2

11:10-16:55

1 stop5h 45m

San Diego

Sat 28/2

17:45-23:15

1 stop5h 30m

£91

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 9/1

05:05-10:55

1 stop5h 50m

San Diego

Mon 12/1

15:40-21:20

1 stop5h 40m

£103

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 1/1

05:10-10:15

1 stop5h 05m

San Diego

Fri 9/1

16:05-21:50

1 stop5h 45m

£106

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 16/1

06:10-07:40

Nonstop1h 30m

San Diego

Mon 19/1

06:45-08:30

Nonstop1h 45m

£109

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sun 15/2

07:00-08:40

Nonstop1h 40m

San Diego

Thu 19/2

09:54-11:44

Nonstop1h 50m

£112

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 17/2

08:11-09:49

Nonstop1h 38m

San Diego

Tue 17/2

20:59-08:46

1 stop11h 47m

£112

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 23 results
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2
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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 28 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, January is the cheapest month in which you can book a flight from San Francisco to San Diego (average of £21). Flying from San Francisco to San Diego in September is currently the most expensive (average of £48). 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 5 December 2025.

It’s typically best to fly out from San Francisco to San Diego in the morning. Doing so could potentially save you 67% on the flight price compared to flying at midday, which is usually more expensive.

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 5 December 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
11,400 reviews
Check prices

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

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
11,400 reviews
Alaska Airlines
8.0
Very Good
11,400 reviews
Check prices

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

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
2,815 reviews
Alaska Airlines
8.0
Very Good
11,400 reviews
Check prices

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

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
3,092 reviews
Alaska Airlines
8.0
Very Good
11,400 reviews
Check prices

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

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 38m on average. When it comes time to book airfare, you have a few options: there are 66 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 6 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 35m. Fly via Alaska Airlines 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 £27, 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 cheapest airlines to fly from San Francisco to San Diego one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as £15. Users have also found prices from £21 and £36 on Alaska Airlines and Southwest, respectively.

  • 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 Frontier (80%), Horizon Air (77%) or Air China (77%) 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, January is the cheapest month in which you can book a flight from San Francisco to San Diego (average of £21). Flying from San Francisco to San Diego in September is currently the most expensive (average of £48). 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 5 December 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£27Average£28FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Alaska AirlinesCheapest£40Average£123FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Hawaiian AirlinesCheapest£64Average£85FlexibilityNo 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?

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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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