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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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SFO
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to Fremont are usually found in January or February, booked 87 days in advance, depart on a Friday or Thursday and return on a Tuesday

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 October 30, 2025.

This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:10 amSAN - SFO
Nonstop1h 53mAlaska Airlines
Thu 12/117:00 amSFO - SAN
Nonstop1h 39mAlaska Airlines
Deal found 10/30$76
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:00 amSAN - SFO
Nonstop1h 45mSouthwest
Sun 12/75:50 amSFO - SAN
Nonstop1h 30mSouthwest
Deal found 10/30$77
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.
Sun 12/148:10 pmSAN - SFO
Nonstop1h 53mFrontier
Sat 1/32:13 pmSFO - SAN
Nonstop1h 39mFrontier
Deal found 10/29$78
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:43 amSAN - SFO
Nonstop1h 56mFrontier
Mon 11/249:03 amSFO - SAN
Nonstop1h 45mFrontier
Deal found 10/30$79
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2111:43 amSAN - SFO
Nonstop1h 56mFrontier
Mon 11/249:03 amSFO - SAN
Nonstop1h 45mFrontier
Deal found 10/29$80
This Kissandfly.com 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:45 amSAN - SFO
Nonstop1h 47mAlaska Airlines
Sun 12/77:00 amSFO - SAN
Nonstop1h 39mAlaska Airlines
Deal found 10/30$81
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.
Thu 12/43:47 pmSAN - SFO
1 stop4h 16mFrontier
Sun 12/72:13 pmSFO - SAN
Nonstop1h 39mFrontier
Deal found 10/30$82
This Flightnetwork 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:10 pmSAN - SFO
Nonstop1h 53mFrontier
Mon 12/86:30 amSFO - SAN
1 stop12h 45mFrontier
Deal found 10/29$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.
Sat 11/1510:57 amSAN - SFO
Nonstop1h 52mFrontier
Mon 11/173:09 pmSFO - SAN
Nonstop1h 43mFrontier
Deal found 10/30$84
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:17 pmSAN - SFO
Nonstop1h 52mFrontier
Thu 11/133:14 pmSFO - SAN
Nonstop1h 43mFrontier
Deal found 10/30$87
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.
Sat 11/810:00 pmSAN - SFO
Nonstop1h 47mFrontier
Thu 11/133:14 pmSFO - SAN
Nonstop1h 43mFrontier
Deal found 10/30$88

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 October 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$76
(Cheapflightsfares)

One-way from

$39
(United Airlines)

Popular in

September

Cheapest in

January

Average price

$137
Provider with most accurate pricing for San Diego-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-San Francisco flights.
Search Deals
From San Diego to Fremont
Search Deals
One-way flight from San Diego to Fremont
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 30, 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

Fri 12/12

6:15 am-8:06 am

Nonstop1h 51m

San Francisco

Mon 12/15

7:47 pm-9:21 pm

Nonstop1h 34m

$97

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Wed 12/10

1:15 pm-6:15 pm

1 stop5h 00m

San Francisco

Thu 12/11

10:30 am-12:00 pm

Nonstop1h 30m

$97

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 1/27

12:15 pm-2:02 pm

Nonstop1h 47m

San Francisco

Thu 1/29

10:12 am-11:51 am

Nonstop1h 39m

$97

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Sun 12/14

7:00 am-8:45 am

Nonstop1h 45m

San Francisco

Wed 12/31

5:10 am-11:45 am

1 stop6h 35m

$97

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Wed 12/3

9:10 am-11:03 am

Nonstop1h 53m

San Francisco

Sat 12/6

9:57 pm-11:30 pm

Nonstop1h 33m

$107

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Wed 12/3

6:15 am-8:06 am

Nonstop1h 51m

San Francisco

Wed 12/10

10:06 am-4:20 pm

1 stop6h 14m

$107

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 12/9

8:05 am-1:36 pm

1 stop5h 31m

San Francisco

Wed 12/10

9:57 pm-11:30 pm

Nonstop1h 33m

$107

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Wed 11/12

4:30 pm-6:14 pm

Nonstop1h 44m

San Francisco

Sun 11/16

7:00 am-8:40 am

Nonstop1h 40m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Fri 2/27

9:59 pm-11:33 pm

Nonstop1h 34m

San Francisco

Tue 3/3

4:30 pm-6:04 pm

Nonstop1h 34m

$127

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 12/2

12:43 pm-5:24 pm

1 stop4h 41m

San Francisco

Wed 12/3

7:00 am-8:39 am

Nonstop1h 39m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 21 results
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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 October 24, 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 87 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 $19). Flying from San Diego to Fremont in August is currently the most expensive (average of $57). 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 October 30, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 39% on flights from San Diego to Fremont by exploring options for tickets in the afternoon.

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 Saturday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Hawaiian Airlines 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
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,214 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,797 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,998 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,123 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 33 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 245 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from San Diego to Fremont?

    Departing from San Diego to Fremont will take you 1h 51m. Airlines will cover a distance of 446 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $39. United Airlines flights start at $39 while deals on Southwest start at $49 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: Iberia (100%), Qantas Airways (92%), Lufthansa (84%).

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

    While on average a flight from San Diego to Fremont is generally $721, our data shows the cheapest flight currently is $38. When looking at the most popular route, (San Diego - San Francisco), you can expect to pay $54 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 $19). Flying from San Diego to Fremont in August is currently the most expensive (average of $57). 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.

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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$27Average$96FlexibilityNo cancel feeOn-time65%
FrontierCheapest$27Average$83FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$30Average$138FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$56Average$189FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$57Average$188FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$77Average$179FlexibilityNo cancel feeOn-time63%
DeltaCheapest$88Average$176FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$364FlexibilityNo cancel feeOn-time71%

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