Frontier's UpFront Plus guarantees an empty middle seat, ideal for extra space.
Frontier charges for carry-ons; add during booking for lower fees, essential for budget planning.
$39+ Cheap flights from San Francisco to San Diego (SFO - SAN)
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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
Nov 29 — Dec 61
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from San Francisco to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 Tuesday or Monday and return on a Friday
Find flight deals from San Francisco to San Diego
Cheapest flights from San Francisco to San DiegoExplore 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 October 30, 2025.
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 October 30, 2025.
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:30 amSFO - SAN
Nonstop1h 36mUnited Airlines
Sat 12/64:08 pmSAN - SFO
Nonstop1h 42mUnited Airlines
Deal found 10/30![United Airlines logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amSFO - SAN
Nonstop1h 39mMultiple Airlines
Fri 12/58:10 pmSAN - SFO
Nonstop1h 53mMultiple Airlines
Deal found 10/27![Multiple Airlines logo]()
$78
This Priceline deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/209:03 amSFO - SAN
Nonstop1h 45mFrontier
Mon 11/2411:43 amSAN - SFO
Nonstop1h 56mFrontier
Deal found 10/29![Frontier logo]()
$80
This CheapOair deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:02 amSFO - SAN
1 stop13h 37mFrontier
Mon 11/1712:12 pmSAN - SFO
Nonstop1h 52mFrontier
Deal found 10/27![Frontier logo]()
$82
This Gotogate deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:45 amSFO - SAN
1 stop6h 50mFrontier
Mon 11/1712:12 pmSAN - SFO
Nonstop1h 52mFrontier
Deal found 10/28![Frontier logo]()
$83
This Frontier deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/173:09 pmSFO - SAN
Nonstop1h 43mFrontier
Tue 11/188:00 amSAN - SFO
1 stop8h 43mFrontier
Deal found 10/30![Frontier logo]()
$84
This Frontier deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:45 amSFO - SAN
1 stop6h 50mFrontier
Fri 11/1412:17 pmSAN - SFO
Nonstop1h 52mFrontier
Deal found 10/29![Frontier logo]()
$86
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:25 amSFO - SAN
Nonstop1h 43mAlaska Airlines
Tue 12/97:59 pmSAN - SFO
Nonstop1h 47mAlaska Airlines
Deal found 10/27![Alaska Airlines logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/289:03 amSFO - SAN
Nonstop1h 45mMultiple Airlines
Tue 12/96:15 amSAN - SFO
Nonstop1h 51mMultiple Airlines
Deal found 10/27![Multiple Airlines logo]()
$88
This Expedia deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/152:19 pmSFO - SAN
Nonstop1h 39mMultiple Airlines
Wed 11/199:10 amSAN - SFO
Nonstop1h 51mMultiple Airlines
Deal found 10/29![Multiple Airlines logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:06 amSFO - SAN
1 stop6h 14mMultiple Airlines
Thu 12/258:10 pmSAN - SFO
Nonstop1h 53mMultiple Airlines
Deal found 10/28![Multiple Airlines logo]()
$90
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 October 30, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $77 (Southwest) |
One-way from | $39 (United Airlines) |
Popular in | September |
Cheapest in | January |
Average price | $167 |
Good round-trip deal | $126 or less |
Good one-way deal | $76 or less |
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated October 30, 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
Sat 12/6
11:40 am-1:15 pm
Nonstop1h 35m
San Diego
Mon 12/8
7:00 am-8:45 am
Nonstop1h 45m
$77
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 12/4
7:00 am-8:39 am
Nonstop1h 39m
San Diego
Sat 12/6
6:15 am-8:06 am
Nonstop1h 51m
$77
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Wed 12/3
7:00 am-8:39 am
Nonstop1h 39m
San Diego
Sat 12/6
6:15 am-8:06 am
Nonstop1h 51m
$77
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 12/4
7:00 am-8:39 am
Nonstop1h 39m
San Diego
Thu 12/4
3:05 pm-4:46 pm
Nonstop1h 41m
$87
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 12/4
5:20 am-10:45 am
1 stop5h 25m
San Diego
Sun 12/7
7:00 am-8:45 am
Nonstop1h 45m
$97
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 12/18
7:45 am-9:15 am
Nonstop1h 30m
San Diego
Mon 12/22
9:45 pm-11:25 pm
Nonstop1h 40m
$97
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Tue 1/27
5:02 pm-6:36 pm
Nonstop1h 34m
San Diego
Wed 2/4
2:51 pm-4:32 pm
Nonstop1h 41m
$97
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 1/22
6:05 am-1:35 pm
1 stop7h 30m
San Diego
Mon 1/26
7:30 pm-9:15 pm
Nonstop1h 45m
$107
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Fri 12/5
2:15 pm-10:25 pm
1 stop8h 10m
San Diego
Sun 12/7
7:00 am-8:45 am
Nonstop1h 45m
$117
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sat 1/10
11:41 am-1:21 pm
Nonstop1h 40m
San Diego
Sat 1/10
8:59 pm-10:47 pm
Nonstop1h 48m
$117
Showing 1-10 of 23 results
Compare providers for flights from San Francisco to San Diego
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to San Diego in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-San Diego flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Francisco-San Diego flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Francisco-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-San Diego flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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 round-trip 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
Prices
Delays
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 round-trip flight from San Francisco to San Diego. Price data was last updated on October 24, 2025.
The price you pay for your flight from San Francisco to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 72 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from San Francisco to San Diego?
Currently, February is the cheapest month in which you can book a flight from San Francisco to San Diego (average of $27). Flying from San Francisco to San Diego in September is currently the most expensive (average of $64). 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 October 30, 2025.
A simple way to save on the total cost of your ticket is to fly from San Francisco to San Diego in the morning. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight at noon.
What is the cheapest day to fly from San Francisco to San Diego?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to San Diego. Price data was last updated on October 26, 2025.
Travelers seeking maximum savings on their San Francisco to San Diego flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from San Francisco to San Diego delayed?
About 18% of weekly flights between San Francisco and San Diego have experienced delays in the past year, with the average delay time being 119 minutes.
What is the most punctual flight time for San Francisco to San Diego flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Francisco to San Diego flights?
Over the last year, Air China have had the lowest number of delays on this route, with just 9% of flights being delayed.
The best insider tips for San Francisco to San Diego flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to San Diego trip
Airlines
![Frontier]()
Frontier
![United Airlines]()
United Airlines
United's Economy Plus offers extra legroom, perfect for added comfort on short flights.
Basic Economy restricts carry-ons, but Premier members are exempt, ideal for frequent flyers.
![Alaska Airlines]()
Alaska Airlines
Alaska's Premium Class offers extra legroom and free cocktails, ideal for a short flight.
Saver Fare allows a carry-on, but no seat selection in advance, suitable for budget travelers.
![Southwest]()
Southwest
Enjoy free snacks and non-alcoholic beverages, plus a free drink on special occasions.
Southwest offers free messaging and high-speed Wi-Fi for a fee on all flights.
Airports
Our travel experts
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 October 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Hawaiian Airlines from San Francisco to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Entertainment
7.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Entertainment
7.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Entertainment
7.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Entertainment
7.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Entertainment
7.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
National City
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for San Francisco to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from San Francisco to San Diego
Discover the top 8 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 2,558,603 searches. Data last updated October 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$30 | Average$102 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$36 | Average$102 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$38 | Average$155 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$57 | Average$176 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$58 | Average$191 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$77 | Average$182 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$98 | Average$196 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$184 | Average$322 | FlexibilityNo cancel fee | On-time71% |