Cheap flights from San Francisco to San Diego from £44

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
20 Apr — 27 Apr1
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 Monday or Tuesday 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 21 March 2026.

Sat 18/422:40
SFO
-
SAN
Nonstop1h 49m
United Airlines
Sat 25/418:22
SAN
-
SFO
Nonstop1h 43m
United Airlines
Deal found 20/3£87
Mon 20/408:53
SFO
-
SAN
1 stop9h 03m
Frontier
Thu 23/409:19
SAN
-
SFO
Nonstop1h 52m
Frontier
Deal found 17/3£88
Wed 15/413:20
SFO
-
SAN
1 stop7h 10m
Southwest
Wed 22/413:00
SAN
-
SFO
2 stops6h 55m
Southwest
Deal found 16/3£91
Sat 2/506:00
SFO
-
SAN
1 stop14h 04m
Frontier
Sat 9/519:18
SAN
-
SFO
Nonstop2h 01m
Frontier
Deal found 18/3£93
Wed 22/405:55
SFO
-
SAN
2 stops6h 45m
Southwest
Wed 29/413:00
SAN
-
SFO
2 stops6h 55m
Southwest
Deal found 16/3£95
Wed 22/405:55
SFO
-
SAN
2 stops6h 45m
Southwest
Thu 23/420:45
SAN
-
SFO
Nonstop1h 40m
Southwest
Deal found 16/3£99
Wed 15/406:20
SFO
-
SAN
2 stops11h 25m
Southwest
Sat 18/408:35
SAN
-
SFO
2 stops8h 50m
Southwest
Deal found 16/3£99
Wed 22/407:15
SFO
-
SAN
Nonstop1h 40m
Alaska Airlines
Sat 25/414:31
SAN
-
SFO
Nonstop1h 41m
Alaska Airlines
Deal found 19/3£102
Sat 9/510:10
SFO
-
SAN
2 stops7h 40m
Southwest
Sat 16/511:30
SAN
-
SFO
1 stop9h 50m
Southwest
Deal found 18/3£111
Sat 11/410:10
SFO
-
SAN
2 stops7h 40m
Southwest
Wed 15/406:30
SAN
-
SFO
Nonstop1h 45m
Southwest
Deal found 16/3£114

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 21 March 2026.

Round-trip from

£87

One-way from

£44

Popular in

February

Cheapest in

July

Average price

£147

Good round-trip deal

£298 or less
United Airlines
  • United Airlines
  • 18/4-25/4
  • Nonstop
  • 3h 32m total
  • San Francisco to San Diego
Southwest
  • Southwest
  • 15/4
  • 1 total stop
  • 7h 10m total
  • San Francisco to San Diego
Highest demand for flights based on searches. 18% potential increase in price (£23 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 March 2026
Price to beat on a round-trip 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 21 March 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 11/4

20:45-22:38

Nonstop1h 53m

San Diego

Wed 15/4

09:46-11:32

Nonstop1h 46m

£87

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 2/5

13:50-21:00

2 stops7h 10m

San Diego

Sat 9/5

14:25-16:10

Nonstop1h 45m

£99
Fastest return journey

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 1/5

22:40-00:28

Nonstop1h 48m

San Diego

Sat 2/5

11:04-12:50

Nonstop1h 46m

£110

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 18/4

10:10-16:25

1 stop6h 15m

San Diego

Thu 23/4

06:45-12:35

2 stops5h 50m

£129

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 22/4

05:55-12:40

2 stops6h 45m

San Diego

Sun 26/4

07:00-08:35

Nonstop1h 35m

£129

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 11/4

10:10-17:50

2 stops7h 40m

San Diego

Wed 15/4

18:30-23:15

1 stop4h 45m

£129

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 17/4

22:40-00:29

Nonstop1h 49m

San Diego

Sun 19/4

06:36-08:24

Nonstop1h 48m

£132

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 25/4

10:10-17:50

2 stops7h 40m

San Diego

Mon 27/4

06:45-12:35

2 stops5h 50m

£132

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 24/4

06:00-09:24

1 stop3h 24m

San Diego

Sat 25/4

06:15-12:15

1 stop6h 00m

£144

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 19/5

05:40-12:17

1 stop6h 37m

San Diego

Thu 21/5

19:11-23:57

1 stop4h 46m

£144

Flights are sorted by cheapest return flights first.

Deals found on 16/3

Showing 1-10 of 21 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?

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 13 March 2026.

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, May is the cheapest month in which you can book a flight from San Francisco to San Diego (average of £25). Flying from San Francisco to San Diego in February is currently the most expensive (average of £73). 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 21 March 2026.

It’s typically best to fly out from San Francisco to San Diego in the evening. Doing so could potentially save you 36% on the flight price compared to flying in the afternoon, 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 21 March 2026.
Get a feel of what it's like to fly with Alaska Airlines and Hawaiian 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.

Comfort

7.8

Crew

8.5

Food

7.0

Entertainment

7.0

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

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

Comfort

7.8

Crew

8.5

Food

7.0

Entertainment

7.0

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

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

Comfort

7.8

Crew

8.5

Food

7.0

Entertainment

7.0

Boarding

8.1

Overall

7.9

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 40m on average. When it comes time to book airfare, you have a few options: there are 44 outbound flights from San Francisco to San Diego offered by 2 different airlines.

  • 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 53m. Fly via United Airlines or Southwest to get the fastest option. San Francisco and San Diego are separated by a distance of 446 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Hawaiian Airlines, at £64, was found to be the cheapest airline from San Francisco to San Diego. An alternate airline flying to your destination would be Alaska Airlines. Hawaiian Airlines is 53% 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 Frontier (100%), Cathay Pacific (86%) or Air Canada (86%) 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 £299 for a flight from San Francisco to San Diego. The cheapest flight overall is £137 while the most popular route, (San Francisco - San Diego) is currently priced at £107.

  • 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, May is the cheapest month in which you can book a flight from San Francisco to San Diego (average of £25). Flying from San Francisco to San Diego in February is currently the most expensive (average of £73). 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 2 airlines flying from San Francisco to San Diego

Discover the top 2 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 21 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest£64Average£107FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Alaska AirlinesCheapest£67Average£143FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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