Cheap flights from San Francisco to San Diego from £51

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 23/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
4 Jun — 11 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to San Diego are usually found in July or June, booked 72 days in advance, depart on a Tuesday or Friday and return on a Monday

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 May 2026.

Fri 19/622:27
SFO
-
SAN
Nonstop1h 48m
Frontier
Mon 22/619:35
SAN
-
SFO
Nonstop1h 55m
Frontier
Deal found 2/5£82
Tue 16/622:27
SFO
-
SAN
Nonstop1h 48m
Frontier
Tue 23/609:43
SAN
-
SFO
1 stop4h 33m
Frontier
Deal found 2/5£91
Wed 27/506:16
SFO
-
SAN
Nonstop1h 42m
Alaska Airlines
Wed 27/509:01
SAN
-
SFO
Nonstop1h 48m
Alaska Airlines
Deal found 4/5£97
Tue 30/607:55
SFO
-
SAN
Nonstop1h 40m
Alaska Airlines
Tue 30/621:27
SAN
-
SFO
Nonstop1h 41m
Alaska Airlines
Deal found 5/5£101
Wed 27/506:00
SFO
-
SAN
1 stop4h 08m
United Airlines
Wed 27/519:41
SAN
-
SFO
Nonstop1h 47m
United Airlines
Deal found 30/4£108
Wed 27/507:20
SFO
-
SAN
2 stops6h 50m
Southwest
Sat 30/517:15
SAN
-
SFO
Nonstop1h 40m
Southwest
Deal found 5/5£112
Sat 6/606:00
SFO
-
SAN
Nonstop1h 35m
Southwest
Sat 6/616:15
SAN
-
SFO
1 stop7h 15m
Southwest
Deal found 1/5£113
Fri 19/620:45
SFO
-
SAN
1 stop12h 03m
Frontier
Fri 26/619:35
SAN
-
SFO
Nonstop1h 55m
Frontier
Deal found 5/5£114
Wed 27/517:41
SFO
-
SAN
Nonstop1h 42m
Alaska Airlines
Sat 30/509:01
SAN
-
SFO
Nonstop1h 48m
Alaska Airlines
Deal found 30/4£116
Tue 2/607:20
SFO
-
SAN
2 stops6h 50m
Southwest
Tue 9/618:50
SAN
-
SFO
1 stop4h 25m
Southwest
Deal found 5/5£120
Sat 30/518:45
SFO
-
SAN
1 stop5h 09m
United Airlines
Sun 31/506:15
SAN
-
SFO
Nonstop1h 44m
United Airlines
Deal found 30/4£123
Thu 28/506:16
SFO
-
SAN
Nonstop1h 42m
Alaska Airlines
Thu 4/609:01
SAN
-
SFO
Nonstop1h 48m
Alaska Airlines
Deal found 30/4£125

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 May 2026.

Round-trip from

£82

One-way from

£51

Popular in

March

Cheapest in

July

Average price

£124

Good round-trip deal

£292 or less

Good one-way deal

£37 or less
Frontier
  • Frontier
  • 19/6-22/6
  • Nonstop
  • 3h 43m total
  • San Francisco to San Diego
United Airlines
  • United Airlines
  • 23/5
  • Nonstop
  • 1h 52m total
  • San Francisco to San Diego
Highest demand for flights based on searches. 21% potential increase in price (£28 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
Average for round-trip flights in May 2026
Price to beat on a round-trip flight from San Francisco to San Diego.
Price to beat on a one-way flight from San Francisco to San Diego.

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 May 2026.
Use the filters below to find and compare flights from San Francisco to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 23/5

08:15-09:59

Nonstop1h 44m

San Diego

Sun 24/5

07:15-09:01

Nonstop1h 46m

£116

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 17/6

05:50-07:25

Nonstop1h 35m

San Diego

Wed 24/6

14:40-22:15

2 stops7h 35m

£138

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 26/5

07:20-14:10

2 stops6h 50m

San Diego

Tue 26/5

20:20-22:05

Nonstop1h 45m

£138

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 16/6

08:55-10:40

Nonstop1h 45m

San Diego

Tue 23/6

14:40-22:15

2 stops7h 35m

£138

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sun 5/7

07:55-09:35

Nonstop1h 40m

San Diego

Sat 11/7

17:15-22:34

1 stop5h 19m

£160

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 19/6

14:00-15:40

Nonstop1h 40m

San Diego

Fri 26/6

18:55-00:30

2 stops5h 35m

£164

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 17/9

05:10-11:15

2 stops6h 05m

San Diego

Sun 20/9

06:30-08:10

Nonstop1h 40m

£164
Fastest return journey

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 11/6

06:45-08:20

Nonstop1h 35m

San Diego

Sun 14/6

07:15-08:50

Nonstop1h 35m

£164

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 4/6

15:45-19:20

1 stop3h 35m

San Diego

Mon 8/6

09:30-15:25

2 stops5h 55m

£168

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 28/5

17:40-23:05

1 stop5h 25m

San Diego

Thu 4/6

08:15-13:40

2 stops5h 25m

£171

Flights are sorted by cheapest return flights first.

Deals found on 3/5

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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?

Booking 71 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, July is the cheapest month in which you can book a flight from San Francisco to San Diego (average of £100). Flying from San Francisco to San Diego in March is currently the most expensive (average of £194). 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 May 2026.

It’s typically best to fly out from San Francisco to San Diego in the evening. Doing so could potentially save you 57% on the flight price compared to flying in the morning, 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 5 May 2026.
Get a feel of what it's like to fly with Alaska Airlines 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.

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

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 44m on average. When it comes time to book airfare, you have a few options: there are 54 outbound flights from San Francisco to San Diego offered by 1 airline.

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

  • 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 United Airlines, Southwest, or Alaska Airlines to get the fastest option. San Francisco and San Diego are separated by a distance of 446 mi. Most flights are nonstop.

  • What is the cheapest airline to fly from San Francisco to San Diego round-trip?

    Alaska Airlines, at £66, was found to be the cheapest airline from San Francisco to San Diego.. Alaska Airlines is 54% 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 (94%), Copa Airlines (88%) or United Airlines (82%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay £215 for a flight from San Francisco to San Diego. The cheapest flight overall is £37 while the most popular route, (San Francisco - San Diego) is currently priced at £337.

  • 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, July is the cheapest month in which you can book a flight from San Francisco to San Diego (average of £100). Flying from San Francisco to San Diego in March is currently the most expensive (average of £194). 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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Top airline flying from San Francisco to San Diego

Discover the top airline 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 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£66Average£295FlexibilityNo cancel feeOn-time75%
Search Alaska 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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