$69 Find Cheap Flights from San Diego to Fremont

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Fremont departing on 6/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$114
Typical prices: $227-$104
Frontier, Alaska Airlines
Tue 9/15Wed 9/23
SAN - SFO • Non-stop
Cheapest non-stop
$115
Typical prices: $210-$90
Alaska Airlines, Frontier
Tue 7/7Wed 7/8
SAN - SFO • Non-stop
Arrival airport
You can't fly directly to Fremont. It is served by San Francisco (SFO), located 21.9 miles from Fremont.
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from San Diego to Fremont (SAN-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Fremont that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to Fremont

Tue, Sep 15 - Wed, Sep 23
Multiple Airlines Logo
4:36 pm - 6:22 pm
SAN
-
SFO
1h 46mnonstop
Multiple Airlines Logo
9:27 am - 11:16 am
SFO
-
SAN
1h 49mnonstop
$114Multiple Airlines
Tue, Jul 7 - Wed, Jul 8
Multiple Airlines Logo
9:27 pm - 11:08 pm
SAN
-
SFO
1h 41mnonstop
Multiple Airlines Logo
10:23 pm - 12:04 am
SFO
-
SAN
1h 41mnonstop
$115Multiple Airlines
Wed, Aug 5 - Sun, Aug 9
Frontier Logo
7:46 pm - 9:33 pm
SAN
-
SFO
1h 47mnonstop
Frontier Logo
10:23 pm - 11:59 pm
SFO
-
SAN
1h 36mnonstop
$116Frontier
Fri, Sep 18 - Mon, Sep 28
Frontier Logo
4:36 pm - 6:22 pm
SAN
-
SFO
1h 46mnonstop
Frontier Logo
5:52 pm - 7:37 pm
SFO
-
SAN
1h 45mnonstop
$117Frontier
Fri, Sep 18 - Mon, Sep 28
Frontier Logo
4:36 pm - 6:22 pm
SAN
-
SFO
1h 46mnonstop
Frontier Logo
5:52 pm - 7:37 pm
SFO
-
SAN
1h 45mnonstop
$118Frontier
Sun, Sep 20 - Mon, Sep 21
Frontier Logo
4:36 pm - 6:22 pm
SAN
-
SFO
1h 46mnonstop
Frontier Logo
5:52 pm - 7:37 pm
SFO
-
SAN
1h 45mnonstop
$119Frontier
Wed, Jul 29 - Mon, Aug 3
Multiple Airlines Logo
7:46 pm - 9:38 pm
SAN
-
SFO
1h 52mnonstop
Multiple Airlines Logo
6:00 am - 7:44 am
SFO
-
SAN
1h 44mnonstop
$120Multiple Airlines
Wed, Jun 17 - Wed, Jun 24
Multiple Airlines Logo
9:27 pm - 11:08 pm
SAN
-
SFO
1h 41mnonstop
Multiple Airlines Logo
10:27 pm - 12:15 am
SFO
-
SAN
1h 48mnonstop
$121Multiple Airlines
Sat, Aug 1 - Mon, Aug 10
Frontier Logo
7:46 pm - 9:38 pm
SAN
-
SFO
1h 52mnonstop
Frontier Logo
10:23 pm - 11:59 pm
SFO
-
SAN
1h 36mnonstop
$122Frontier
Wed, Jun 17 - Sat, Jun 27
Frontier Logo
7:35 pm - 9:30 pm
SAN
-
SFO
1h 55mnonstop
Frontier Logo
10:27 pm - 12:15 am
SFO
-
SAN
1h 48mnonstop
$123Frontier
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$69
Best time to beat the crowds but there is an average 23% increase in price.
Flight from San Diego to San Francisco

When to book flights from San Diego to Fremont

Are your dates flexible? Find out the best times to travel from San Diego to Fremont based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from San Diego to Fremont: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from San Diego to Fremont 
LindseyFlew with SWISS
SAN
-
SFO
Dec 2025
Ready for weather delays of wind in SFO, which happens often. Keep that in consideration when planning an additional leg of a trip after it from SFO.
VyomaFlew with Alaska Airlines
SAN
-
SFO
Jun 2024
Be sure to read the signs, i have heard it's confusing for connecting flights if you don't follow the directions.

FAQs for booking flights from San Diego to Fremont

  • Which airports will I be using when flying from San Diego to Fremont?

    When flying out of San Diego you’ll be using San Diego. Fremont does not have its own airport so you’ll be flying into nearby San Francisco airport, which is 21.9 mi away.

  • How long does a flight from San Diego to Fremont take?

    Direct flights cover the 446 miles separating San Diego and Fremont in about 1h 30m.

  • How many flights are there between San Diego and Fremont?

    102 direct flights run between San Diego and Fremont on a daily basis. On average, there are about 716 departures each week.

  • What’s the cheapest day of the week to fly between San Diego and Fremont?

    Consider leaving on a Thursday and avoid Saturdays if you are looking for the best rates. For your return to San Diego, you’ll find the best rates on Saturdays and the most expensive ones on Thursdays.

  • How does KAYAK find such low prices on flights from San Diego to Fremont?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Fremont.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Fremont?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Fremont from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Fremont?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Fremont with an airline and back to San Diego with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Fremont?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Fremont from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from San Diego to Fremont?

    In the last 5 days, the cheapest one-way ticket between San Diego and Fremont found on KAYAK was with Frontier for $30. Spirit Airlines offered a round-trip connection from $29 and Hawaiian Airlines from $38.

Top tips for finding cheap flights from San Diego to Fremont

  • There is no airport in Fremont. Instead, you’ll be flying into San Francisco Airport when flying between San Diego and Fremont.
  • The cheapest flight from San Diego to Fremont was found 70 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be February, March and April. The cheapest month to fly is October.

Reviews of the top 5 airlines serving San Diego to Fremont

 
Need help choosing which airline to fly with from San Diego to Fremont? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4266 reviews
8.6Crew
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
Airline reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

4.0 OkayAnonymous, May 2026
MDW - LAX
Read more Southwest reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Flight got delayed like 5 times, then they put and ada passenger in the back of the plane.

Flight delayed no communication. The gate was changed so many times.

Alaska is by far the best airline to fly with 😍

More efficient with checking lines and boarding/checking bags when needed.

They were really helpful with every question and my kids had never been on a plane and the staff made them feel comfortable

I was on flight #3022 departed from San Diego, California to Medford, Oregon. I had Denise & Damaris as my flight attendants. I didn’t have much interaction with Damaris, but I did with Denise who had, this calm, cool collective voice when she spoke about the emergency exit plans before takeoff. I travel often and I’ve never met a flight attendant that can put you at ease. I felt she respects and takes pride in her position and more airlines need to adopt the integrity and respect that she has for Alaska Airlines. Debbie

All airlines should board planes back to front, instead of catering to higher priced tickets. The boarding groups are inefficient and delay takeoff time

Luggage was severely damaged. Flight was late for several hours

The ticketing counter in SD was a mess. The lady handling the First-Class check-in seemed overwhelmed until a supervisor replaced her. It took almost 20 minutes to get once couple checked in, and then she started walking around the counters while 7 people just stood in line. Once her supervisor arrived, she announced she was going on break, never to engage with customers again.

No outlets, plugs, way to charge the phone or service and no food on one leg o the trip, but other than that, great. Loved WIFI, the flight, the crew, the pilots, the schedule, etc. Great job. My new favorite airline!

Flight delayed two hours , missed connection flight then connection cancelled- horrible experience with hotel

The checking was disaster, the crew wasn't behave well. It took us two hours to check in, after that thr line at the TSA was long, we barely make the flight. Bad airline

I like that if they asked you to checked in a bag at the gate they give you priority to board

I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.

I like Hawaiian, it was great that they had good internet connection across the Pacific Ocean, thanks to Star Link satellites. The seating was comfortable, ( I was in economy ). Maybe I missed it, but I only got offered a beverage once. It was a nonstop flight KOA to SMF. I would take it again next time I go that way.

Previously flown Hawaiian Airlines on similar routes, I found Alaska Airlines to be noticeably more comfortable. The seats on Alaska Airlines provided better support and cushioning, which made a significant difference on the long flight to the islands. When you’re spending 5-6 hours in the air, seat comfort really matters, and Alaska Airlines delivered where it counts. After comparing both carriers, I’ve decided to book with Alaska Airlines for all my future Hawaii trips. The superior seat comfort alone makes it worth choosing Alaska over Hawaiian Airlines. If you’re planning a trip to Hawaii and prioritizing comfort, I’d recommend giving Alaska Airlines a try. You won’t be disappointed. Highly recommended for Hawaii travel!

I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight

The crew was EXTREMELY helpful And sweet and the flight was smooth!

The Kayak confirmation number did not work for checking in the day before. I checked in at 8.30 using my ticket number. When I arrived at the airport, I was informed that the flight was overbooked, and since I had checked in late, I did not have a seat. The Next flight was not until ten PM. I called my wife, who had been taking care of our kids all weekend, and she was upset, calling me a liar and telling me to stay in SD. It turned my weekend getaway into a nightmare! I blame the Kayak website and will not book flights using your app in the future.

comfortable but the food is horrible. I have flown Hawaiian several times now and no matter what they say the food is its the same squashed bread with melted goop inside. Tastes fake and isnt what they represent, its quite nasty. What happend to real food? And there is NO entertainment!! so not sure why they are asking for a review on that.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

They didn’t offer a water, even after I asked

Remind customers of the need to have passport or new ID for boarding.

The flight never took off and we spent 7 hours at the airport

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Everything you need to know for your flight from San Diego to Fremont

Complete your trip to Fremont with a hotel stay or car rental