Cheap flights from San Diego to San Francisco 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SFO
16 Apr — 23 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Diego to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from San Diego to San Francisco
Explore the most affordable flight options available from San Diego to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 March 2026.

Wed 15/406:30
SAN
-
SFO
Nonstop1h 45m
Southwest
Wed 22/413:20
SFO
-
SAN
1 stop7h 10m
Southwest
Deal found 16/3£81
Wed 29/420:20
SAN
-
SFO
Nonstop1h 45m
Southwest
Sat 2/513:50
SFO
-
SAN
2 stops7h 10m
Southwest
Deal found 12/3£84
Sat 18/413:20
SAN
-
SFO
Nonstop1h 46m
United Airlines
Mon 20/420:45
SFO
-
SAN
Nonstop1h 53m
United Airlines
Deal found 12/3£88
Thu 23/409:19
SAN
-
SFO
Nonstop1h 52m
Frontier
Mon 27/421:20
SFO
-
SAN
1 stop15h 57m
Frontier
Deal found 14/3£90
Thu 30/421:12
SAN
-
SFO
Nonstop1h 49m
Alaska Airlines
Thu 7/507:15
SFO
-
SAN
Nonstop1h 40m
Alaska Airlines
Deal found 16/3£95
Sat 25/406:36
SAN
-
SFO
Nonstop1h 48m
United Airlines
Mon 27/406:00
SFO
-
SAN
1 stop4h 20m
United Airlines
Deal found 12/3£96
Tue 7/416:25
SAN
-
SFO
1 stop6h 20m
Southwest
Wed 8/406:20
SFO
-
SAN
2 stops11h 25m
Southwest
Deal found 13/3£96
Sat 25/414:25
SAN
-
SFO
Nonstop1h 45m
Southwest
Mon 27/415:00
SFO
-
SAN
2 stops6h 10m
Southwest
Deal found 12/3£99
Thu 9/407:20
SAN
-
SFO
Nonstop1h 46m
United Airlines
Sun 12/420:45
SFO
-
SAN
Nonstop1h 53m
United Airlines
Deal found 13/3£103
Fri 17/406:45
SAN
-
SFO
2 stops5h 50m
Southwest
Tue 21/414:50
SFO
-
SAN
1 stop6h 40m
Southwest
Deal found 17/3£107
Wed 8/406:30
SAN
-
SFO
Nonstop1h 45m
Southwest
Sat 11/406:00
SFO
-
SAN
Nonstop1h 35m
Southwest
Deal found 16/3£111

Find flight deals from San Diego to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to San Francisco (SFO). 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 17 March 2026.

Round-trip from

£81

One-way from

£44

Popular in

February

Cheapest in

May

Average price

£133

Good one-way deal

£21 or less
Southwest
  • Southwest
  • 15/4-22/4
  • 1 total stop
  • 8h 55m total
  • San Diego to San Francisco
Southwest
  • Southwest
  • 21/4
  • 1 total stop
  • 6h 20m total
  • San Diego to San Francisco
Highest demand for flights based on searches. 19% potential increase in price (£22 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).
Average for round-trip flights in March 2026
Price to beat on a one-way flight from San Diego to San Francisco.

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Diego to San Francisco 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 17 March 2026.
Use the filters below to find and compare flights from San Diego to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Sat 25/4

06:36-08:24

Nonstop1h 48m

San Francisco

Mon 27/4

06:00-10:20

1 stop4h 20m

£96

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Sat 18/4

17:20-21:35

1 stop4h 15m

San Francisco

Mon 20/4

05:05-09:40

1 stop4h 35m

£103
Fastest return journey

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Fri 15/5

06:20-08:10

Nonstop1h 50m

San Francisco

Sun 17/5

06:00-07:35

Nonstop1h 35m

£103

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 30/4

10:40-17:00

2 stops6h 20m

San Francisco

Sun 3/5

09:10-10:55

Nonstop1h 45m

£114

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 23/4

10:40-17:00

2 stops6h 20m

San Francisco

Mon 27/4

06:00-07:35

Nonstop1h 35m

£114

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 30/4

12:50-14:35

Nonstop1h 45m

San Francisco

Thu 7/5

05:05-12:20

1 stop7h 15m

£115

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 5/5

06:20-09:50

1 stop3h 30m

San Francisco

Thu 7/5

09:30-14:57

1 stop5h 27m

£133

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Mon 18/5

16:26-18:09

Nonstop1h 43m

San Francisco

Mon 18/5

22:40-00:28

Nonstop1h 48m

£133

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Mon 20/4

17:55-00:10

1 stop6h 15m

San Francisco

Tue 21/4

07:20-14:10

2 stops6h 50m

£145

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Fri 3/4

11:01-14:52

1 stop3h 51m

San Francisco

Sun 5/4

06:00-10:20

1 stop4h 20m

£161

Flights are sorted by cheapest return flights first.

Deals found on 13/3

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from San Diego to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from San Diego 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 Diego to San Francisco

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

Use this chart to determine the optimal time to book a return flight from San Diego to San Francisco. Price data was last updated on 13 March 2026.

To ensure you get the cheapest price possible for a flight from San Diego to San Francisco, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, May is the cheapest month in which you can book a flight from San Diego to San Francisco (average of £21). Flying from San Diego to San Francisco in February is currently the most expensive (average of £81). 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 SAN to SFO?

Find hourly flight availability from San Diego to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 March 2026.

One of the essential ways to save on airfare from San Diego to San Francisco is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 90% on airfare.

How much does it cost for a return flight from San Diego to San Francisco?

Related info for your journey

Find useful and relevant information for your journey from San Diego to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this San Diego to San Francisco flight route?

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

    For as low as £96, United Airlines can have you in San Francisco from San Diego in 1h 48m. The distance between San Diego and San Francisco is about 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 to fly from San Diego to San Francisco one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as £20. Users have also found prices from £29 and £37 on Alaska Airlines and Southwest, respectively.

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

    Before booking your flight to San Francisco from San Diego, check out the most reliable airlines to get you to your destination on time: Frontier (100%), Emirates (91%), SWISS( 88%).

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

    On average you can expect to pay £119 for a flight from San Diego to San Francisco. The cheapest flight overall is £20 while the most popular route, (San Diego - San Francisco) is currently priced at £98.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to San Francisco 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 Diego to San Francisco?

    Currently, May is the cheapest month in which you can book a flight from San Diego to San Francisco (average of £21). Flying from San Diego to San Francisco in February is currently the most expensive (average of £81). 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 Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale

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

Cheapflights helps you find that perfect flight to San Francisco from San Diego by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes, we can. To see specific flights from San Diego to San Francisco with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from San Diego today and book when prices fit your budget.

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