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.
$38+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
Jul 23 — Jul 301
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 Saturday 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 July 18, 2025.
Round-trip from | $67 (Southwest) |
|---|---|
One-way from | $38 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $142 |
Good round-trip deal | $89 or less |
Good one-way deal | $59 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 July 18, 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 July 18, 2025.
This Kiwi.com deal was found by Cheapflights users on 7/15. 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.
Tue 8/52:44 pmSFO - SAN
Nonstop1h 41mHawaiian Airlines
Thu 8/1410:11 pmSAN - SFO
Nonstop1h 39mHawaiian Airlines
Deal found 7/15![Hawaiian Airlines logo]()
$64
This Cheapflightsfares deal was found by Cheapflights users on 7/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:20 pmSFO - SAN
Nonstop1h 42mFrontier
Mon 10/279:58 amSAN - SFO
Nonstop1h 52mFrontier
Deal found 7/17![Frontier logo]()
$76
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Tue 8/127:10 pmSFO - SAN
Nonstop1h 40mUnited Airlines
Tue 8/195:56 pmSAN - SFO
Nonstop1h 39mUnited Airlines
Deal found 7/15![United Airlines logo]()
$77
This Alaska Airlines deal was found by Cheapflights users on 7/16. 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.
Tue 8/126:00 amSFO - SAN
Nonstop1h 42mAlaska Airlines
Wed 8/1310:11 pmSAN - SFO
Nonstop1h 39mAlaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$87
This Southwest deal was found by Cheapflights users on 7/15. 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 8/127:25 amSFO - SAN
Nonstop1h 30mSouthwest
Tue 8/198:40 amSAN - SFO
2 stops7h 15mSouthwest
Deal found 7/15![Southwest logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Tue 8/197:20 amSFO - SAN
Nonstop1h 42mMultiple Airlines
Sun 8/2410:40 amSAN - SFO
Nonstop1h 52mMultiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$95
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 July 18, 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
Tue 8/5
2:44 pm-4:25 pm
Nonstop1h 41m
San Diego
Thu 8/14
10:11 pm-11:50 pm
Nonstop1h 39m
$64
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Tue 8/12
7:10 pm-8:50 pm
Nonstop1h 40m
San Diego
Tue 8/19
5:56 pm-7:35 pm
Nonstop1h 39m
$77
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 8/14
10:37 am-12:17 pm
Nonstop1h 40m
San Diego
Thu 8/21
10:15 am-12:07 pm
Nonstop1h 52m
$78
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Tue 8/12
6:00 am-7:42 am
Nonstop1h 42m
San Diego
Wed 8/13
10:11 pm-11:50 pm
Nonstop1h 39m
$87
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Tue 8/12
7:25 am-8:55 am
Nonstop1h 30m
San Diego
Tue 8/19
8:40 am-3:55 pm
2 stops7h 15m
$92
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Tue 8/19
7:20 am-9:02 am
Nonstop1h 42m
San Diego
Sun 8/24
10:40 am-12:32 pm
Nonstop1h 52m
$95
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Tue 7/29
7:20 am-9:02 am
Nonstop1h 42m
$39
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sat 10/11
1:20 pm-3:02 pm
Nonstop1h 42m
$48
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Fri 9/26
8:48 pm-10:27 pm
Nonstop1h 39m
$49
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 8/21
5:00 am-8:45 am
1 stop3h 45m
$58
Showing 1-10 of 13 results
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
Southwest offers two free checked bags, a great perk for budget-conscious travelers.
Southwest's open seating policy allows flexibility; check in early for better seat choices.
Airports
Our travel experts
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
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 July 11, 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, August is the cheapest month in which you can book a flight from San Francisco to San Diego (average of $286). Flying from San Francisco to San Diego in March is currently the most expensive (average of $366). 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 July 18, 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 34% 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 July 13, 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.
Weekly flight availability from San Francisco to San Diego
Explore weekly flight availability from San Francisco to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 18, 2025.
The most flights from SFO to SAN are scheduled on a Thursday (86 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (42 on average).
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 July 18, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Overall
8.0
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Overall
8.0
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Overall
8.0
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Overall
8.0
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Overall
8.0
Food
7.1
Boarding
8.1
Crew
8.5
Entertainment
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - 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
Poway
National City
Lemon Grove
Imperial Beach
La Mesa
Alpine
Santee
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 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 July 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$30 | Average$90 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$37 | Average$100 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$38 | Average$138 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$57 | Average$187 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$61 | Average$200 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$97 | Average$193 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$98 | Average$196 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$168 | Average$318 | FlexibilityNo cancel fee | On-time71% |