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.
$53+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
Feb 6 — Feb 131
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 February or March, booked 72 days in advance, depart on a Tuesday or Monday and return on a Friday
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 January 7, 2026.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $109 (Kiwi.com) |
One-way from | $53 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $137 |
Good round-trip deal | $182 or less |
Good one-way deal | $110 or less |
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 January 7, 2026.
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 January 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/4. 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.
Thu 2/198:05 amSFO - SAN
1 stop9h 46mFrontier
Thu 2/266:25 amSAN - SFO
1 stop11h 33mFrontier
Deal found 1/4![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 1/306:15 amSFO - SAN
1 stop17h 53mFrontier
Tue 2/107:11 amSAN - SFO
1 stop14h 50mFrontier
Deal found 1/6![Frontier logo]()
$110
This Alaska Airlines deal was found by Cheapflights users on 1/5. 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.
Mon 2/22:44 pmSFO - SAN
1 stop4h 33mAlaska Airlines
Mon 2/98:59 pmSAN - SFO
Nonstop1h 48mAlaska Airlines
Deal found 1/5![Alaska Airlines logo]()
$111
This Southwest deal was found by Cheapflights users on 1/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/283:00 pmSFO - SAN
1 stop4h 10mSouthwest
Thu 1/296:50 amSAN - SFO
1 stop5h 00mSouthwest
Deal found 1/7![Southwest logo]()
$112
This Southwest deal was found by Cheapflights users on 1/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/144:40 pmSFO - SAN
1 stop5h 00mSouthwest
Tue 2/1712:25 pmSAN - SFO
Nonstop1h 45mSouthwest
Deal found 1/6![Southwest logo]()
$113
This Southwest deal was found by Cheapflights users on 1/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/276:05 amSFO - SAN
2 stops10h 40mSouthwest
Tue 1/277:30 pmSAN - SFO
Nonstop1h 45mSouthwest
Deal found 1/6![Southwest logo]()
$114
This Alaska Airlines deal was found by Cheapflights users on 1/7. 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.
Wed 1/287:55 pmSFO - SAN
1 stop11h 22mAlaska Airlines
Wed 2/45:15 pmSAN - SFO
1 stop4h 40mAlaska Airlines
Deal found 1/7![Alaska Airlines logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Thu 3/196:35 amSFO - SAN
Nonstop1h 40mAlaska Airlines
Sat 3/218:59 pmSAN - SFO
Nonstop1h 53mAlaska Airlines
Deal found 1/6![Alaska Airlines logo]()
$116
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 1/307:00 amSFO - SAN
Nonstop1h 35mAlaska Airlines
Mon 2/98:59 pmSAN - SFO
Nonstop1h 48mAlaska Airlines
Deal found 1/6![Alaska Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 1/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/125:35 amSFO - SAN
Nonstop1h 30mSouthwest
Tue 2/176:45 amSAN - SFO
Nonstop1h 45mSouthwest
Deal found 1/7![Southwest logo]()
$118
This Jettzy deal was found by Cheapflights users on 1/7. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/49:16 amSFO - SAN
Nonstop1h 39mHawaiian Airlines
Fri 2/68:59 pmSAN - SFO
Nonstop1h 48mHawaiian Airlines
Deal found 1/7![Hawaiian Airlines logo]()
$120
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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.
Mon 2/27:55 pmSFO - SAN
1 stop15h 55mAlaska Airlines
Tue 2/102:51 pmSAN - SFO
Nonstop1h 41mAlaska Airlines
Deal found 1/6![Alaska Airlines logo]()
$121
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 January 7, 2026.
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
Sun 2/8
7:00 am-8:37 am
Nonstop1h 37m
San Diego
Mon 2/9
6:15 am-12:00 pm
1 stop5h 45m
$113
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sat 2/14
4:40 pm-9:40 pm
1 stop5h 00m
San Diego
Tue 2/17
12:25 pm-2:10 pm
Nonstop1h 45m
$113
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Wed 1/28
7:55 pm-7:17 am
1 stop11h 22m
San Diego
Wed 2/4
5:15 pm-9:55 pm
1 stop4h 40m
$115
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sat 2/7
7:10 pm-8:49 pm
Nonstop1h 39m
San Diego
Mon 2/9
9:55 am-11:44 am
Nonstop1h 49m
$117
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Mon 2/2
8:20 am-9:55 am
Nonstop1h 35m
San Diego
Sat 2/7
8:59 pm-10:47 pm
Nonstop1h 48m
$117
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Tue 2/3
7:00 am-8:37 am
Nonstop1h 37m
San Diego
Tue 2/10
12:49 pm-2:39 pm
Nonstop1h 50m
$117
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Fri 3/20
6:35 am-8:15 am
Nonstop1h 40m
San Diego
Mon 3/23
8:59 pm-10:52 pm
Nonstop1h 53m
$117
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sat 1/31
9:15 am-4:20 pm
1 stop7h 05m
San Diego
Tue 2/3
7:40 am-9:20 am
Nonstop1h 40m
$127
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Mon 1/26
11:30 am-1:10 pm
Nonstop1h 40m
San Diego
Tue 1/27
7:40 am-9:20 am
Nonstop1h 40m
$129
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 3/19
6:00 am-7:35 am
Nonstop1h 35m
San Diego
Sun 3/29
6:30 am-8:20 am
Nonstop1h 50m
$132
Showing 1-10 of 24 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 January.
| 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 Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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
Airlines
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 January 2, 2026.
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 $21). 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 January 7, 2026.
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 13% 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 January 3, 2026.
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 21% of weekly flights between San Francisco and San Diego have experienced delays in the past year, with the average delay time being 118 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, United Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.
The best insider tips for San Francisco to San Diego flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
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 January 7, 2026.
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.
Crew
8.5
Overall
8.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Crew
8.5
Overall
8.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Crew
8.5
Overall
8.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Crew
8.5
Overall
8.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Crew
8.5
Overall
8.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Food
7.1
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Crew
8.5
Overall
8.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Food
7.1
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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for San Francisco to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from San Francisco to San Diego
Discover the top 9 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 January 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$27 | Average$83 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$37 | Average$112 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$38 | Average$156 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$53 | Average$121 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$57 | Average$185 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$57 | Average$174 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$77 | Average$182 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$98 | Average$196 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$183 | Average$319 | FlexibilityNo cancel fee | On-time71% |