HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Fremont

$39+ Cheap flights from San Diego (SAN) to Fremont, CA

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SFO
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Fremont 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 Diego to Fremont are usually found in January or February, booked 51 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from San Diego to Fremont

Keep the following information in mind while searching for San Diego to Fremont flight deals. Data was last updated July 1, 2025.

Round-trip from

$58
(Frontier)

One-way from

$39
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$117
From San Diego to Fremont
Search Deals
One-way flight from San Diego to Fremont
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($1 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from San Diego to Fremont

Cheapest flights from San Diego to Fremont
Explore the most affordable flight options available from San Diego to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

This Frontier deal was found by Cheapflights users on 6/29. 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 8/2810:15 amSAN - SFO
Nonstop1h 52mFrontier
Thu 9/42:07 pmSFO - SAN
Nonstop1h 41mFrontier
Deal found 6/29$58
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1510:11 pmSAN - SFO
Nonstop1h 39mAlaska Airlines
Tue 7/296:00 amSFO - SAN
Nonstop1h 42mAlaska Airlines
Deal found 6/29$77
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/15:53 pmSAN - SFO
Nonstop1h 46mMultiple Airlines
Sun 8/36:00 amSFO - SAN
Nonstop1h 42mMultiple Airlines
Deal found 6/30$81
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Wed 7/236:20 amSAN - SFO
Nonstop1h 38mUnited Airlines
Sun 7/277:00 amSFO - SAN
Nonstop1h 38mUnited Airlines
Deal found 6/30$92
This Hawaiian Airlines deal was found by Cheapflights users on 6/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/3010:11 pmSAN - SFO
Nonstop1h 39mHawaiian Airlines
Thu 7/316:00 amSFO - SAN
Nonstop1h 42mHawaiian Airlines
Deal found 6/30$97
This Southwest deal was found by Cheapflights users on 6/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/97:55 amSAN - SFO
Nonstop1h 35mSouthwest
Sun 8/106:50 amSFO - SAN
Nonstop1h 30mSouthwest
Deal found 6/29$104

Cheapflights Fare Finder

Customize your flight search to find flights from San Diego to Fremont 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 1, 2025.
Use the filters below to find and compare flights from San Diego to Fremont that are best for you.

Fly from

San Diego

Fly to

Fremont

Route

Depart

Return

Price

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 8/28

10:15 am-12:07 pm

Nonstop1h 52m

San Francisco

Thu 9/4

2:07 pm-3:48 pm

Nonstop1h 41m

$58

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 7/15

10:11 pm-11:50 pm

Nonstop1h 39m

San Francisco

Tue 7/29

6:00 am-7:42 am

Nonstop1h 42m

$77

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Fri 8/1

5:53 pm-7:39 pm

Nonstop1h 46m

San Francisco

Sun 8/3

6:00 am-7:42 am

Nonstop1h 42m

$81

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Wed 7/23

6:20 am-7:58 am

Nonstop1h 38m

San Francisco

Sun 7/27

7:00 am-8:38 am

Nonstop1h 38m

$92

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Wed 7/30

10:11 pm-11:50 pm

Nonstop1h 39m

San Francisco

Thu 7/31

6:00 am-7:42 am

Nonstop1h 42m

$97

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Sat 8/9

7:55 am-9:30 am

Nonstop1h 35m

San Francisco

Sun 8/10

6:50 am-8:20 am

Nonstop1h 30m

$104

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 7/10

6:20 am-7:58 am

Nonstop1h 38m

$39

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 7/31

5:53 pm-7:39 pm

Nonstop1h 46m

$41

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Sun 9/7

6:15 am-8:04 am

Nonstop1h 49m

$56

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Mon 8/18

3:45 pm-10:40 pm

1 stop6h 55m

$58

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 13 results
1
2

Best time to book a flight from San Diego to Fremont

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Fremont. Price data was last updated on June 27, 2025.

The price you pay for your flight from San Diego to Fremont may vary depending on when you book. For the best chance of a lower fare, look to book 37 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 Diego to Fremont?

Currently, January is the cheapest month in which you can book a flight from San Diego to Fremont (average of $276). Flying from San Diego to Fremont in June is currently the most expensive (average of $360). 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 FR8?

Find hourly flight availability from San Diego to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to Fremont as you normally would.

What is the cheapest day to fly from San Diego to Fremont?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Fremont. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Diego to Fremont flight should consider departing on Friday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Diego to Fremont

Explore weekly flight availability from San Diego to Fremont. 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 1, 2025.

The most flights from SAN to FR8 are scheduled on a Monday (78 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (25 on average).

Reviews of airlines servicing Fremont

Get insights into the airlines that provide service to Fremont. 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 Fremont. Reviews last updated July 1, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from San Diego to Fremont 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,974 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,538 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Fremont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Diego to Fremont?

    For a flight from San Diego to Fremont, you will be flying from San Diego. San Diego (SAN) is just 2.6 mi from the center of the city. San Diego is the only San Diego airport and it handles 58 outbound flights to Fremont per day. 8 airlines have flights to Fremont from San Diego on a regular basis.

  • How popular is this San Diego to Fremont flight route?

    This flight path from San Diego to Fremont was viewed by 223 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from San Diego to Fremont one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $39. Frontier flights start at $41 while deals on Hawaiian Airlines start at $56 one-way.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Diego to Fremont on time: Emirates (92%), Lufthansa (89%), Iberia (86%).

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

    While on average a flight from San Diego to Fremont is generally $1,645, our data shows the cheapest flight currently is $40. When looking at the most popular route, (San Diego - San Francisco), you can expect to pay $39 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from San Diego to Fremont (average of $276). Flying from San Diego to Fremont in June is currently the most expensive (average of $360). 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

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 Diego to Fremont

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Las Vegas flights
San Francisco to Los Angeles flights
Los Angeles to San Francisco flights
Los Angeles to Las Vegas flights
San Francisco to Santa Ana flights
San Jose to Los Angeles flights
Santa Ana to Las Vegas flights
Oakland to Las Vegas flights
Santa Ana to San Francisco flights
Los Angeles to San Jose flights
San Jose to Las Vegas flights
San Francisco to San Diego flights
Burbank to Las Vegas flights
Ontario to San Francisco flights
Oakland to Los Angeles flights
Los Angeles to Oakland flights
Oakland to Santa Ana flights
Sacramento to Los Angeles flights
San Diego to Las Vegas flights
San Jose to San Diego flights
Santa Ana to Oakland flights
Ontario to Las Vegas flights
San Francisco to Ontario flights
Burbank to Oakland flights
Oakland to San Diego flights
Sacramento to Las Vegas flights
San Diego to San Francisco flights
Burbank to San Francisco flights
San Jose to Santa Ana flights
Los Angeles to Sacramento flights
Oakland to Burbank flights
Sacramento to San Diego flights
Santa Ana to San Jose flights
San Diego to San Jose flights
Los Angeles to Reno flights
Ontario to San Jose flights
Las Vegas to Los Angeles flights
Santa Rosa to San Diego flights
San Jose to Ontario flights
Sacramento to Santa Ana flights
San Francisco to Burbank flights
Fresno to Las Vegas flights
Sacramento to Burbank flights
Sacramento to Ontario flights
Ontario to Sacramento flights
Las Vegas to Santa Ana flights
San Diego to Oakland flights
Burbank to San Jose flights
San Francisco to Long Beach flights
Burbank to Reno flights

Top 8 airlines flying from San Diego to Fremont

Discover the top 8 airlines that operate flights from San Diego to Fremont. 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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$27Average$94FlexibilityNo cancel feeOn-time65%
FrontierCheapest$27Average$69FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$28Average$135FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$57Average$172FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$57Average$206FlexibilityNo cancel feeOn-time75%
DeltaCheapest$88Average$196FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$96Average$195FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$368FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.