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$37+ Cheap flights from Fremont, CA to San Diego (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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Fremont 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 Fremont to San Diego

Keep the following information in mind while searching for Fremont to San Diego flight deals. Data was last updated July 3, 2025.

Round-trip from

$58
(Frontier)

One-way from

$37
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$156
From Fremont to San Diego
Search Deals
One-way flight from Fremont to San Diego
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($2 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Fremont to San Diego

Cheapest flights from Fremont to San Diego
Explore the most affordable flight options available from Fremont to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Frontier deal was found by Cheapflights users on 7/2. 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 7/1210:37 amSFO - SAN
Nonstop1h 40mFrontier
Sat 8/25:53 pmSAN - SFO
Nonstop1h 46mFrontier
Deal found 7/2$58
This Expedia deal was found by Cheapflights users on 7/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/157:20 amSFO - SAN
Nonstop1h 42mMultiple Airlines
Thu 7/315:53 pmSAN - SFO
Nonstop1h 46mMultiple Airlines
Deal found 7/1$63
This Southwest deal was found by Cheapflights users on 7/3. 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 7/156:15 amSFO - SAN
Nonstop1h 35mSouthwest
Wed 7/166:50 amSAN - SFO
Nonstop1h 45mSouthwest
Deal found 7/3$67
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Wed 7/97:20 amSFO - SAN
Nonstop1h 42mHawaiian Airlines
Thu 7/106:15 amSAN - SFO
Nonstop1h 45mHawaiian Airlines
Deal found 7/2$74
This Alaska Airlines deal was found by Cheapflights users on 7/3. 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 7/226:00 amSFO - SAN
Nonstop1h 42mAlaska Airlines
Wed 7/3010:11 pmSAN - SFO
Nonstop1h 39mAlaska Airlines
Deal found 7/3$77
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Sat 7/127:10 pmSFO - SAN
Nonstop1h 40mUnited Airlines
Thu 7/176:20 amSAN - SFO
Nonstop1h 38mUnited Airlines
Deal found 7/1$96

Cheapflights Fare Finder

Customize your flight search to find flights from Fremont 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 3, 2025.
Use the filters below to find and compare flights from Fremont to San Diego that are best for you.

Fly from

Fremont

Fly to

San Diego

Route

Depart

Return

Price

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 7/12

10:37 am-12:17 pm

Nonstop1h 40m

San Diego

Sat 8/2

5:53 pm-7:39 pm

Nonstop1h 46m

$58

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 7/15

7:20 am-9:02 am

Nonstop1h 42m

San Diego

Thu 7/31

5:53 pm-7:39 pm

Nonstop1h 46m

$63

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 7/15

6:15 am-7:50 am

Nonstop1h 35m

San Diego

Wed 7/16

6:50 am-8:35 am

Nonstop1h 45m

$67

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 7/9

7:20 am-9:02 am

Nonstop1h 42m

San Diego

Thu 7/10

6:15 am-8:00 am

Nonstop1h 45m

$74

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 7/22

6:00 am-7:42 am

Nonstop1h 42m

San Diego

Wed 7/30

10:11 pm-11:50 pm

Nonstop1h 39m

$77

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 7/12

7:10 pm-8:50 pm

Nonstop1h 40m

San Diego

Thu 7/17

6:20 am-7:58 am

Nonstop1h 38m

$96

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sat 8/30

9:59 pm-11:38 pm

Nonstop1h 39m

$37

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 7/15

6:15 am-7:50 am

Nonstop1h 35m

$39

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 8/15

7:20 am-9:02 am

Nonstop1h 42m

$46

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 7/8

11:10 am-12:44 pm

Nonstop1h 34m

$59

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 13 results
1
2

Best time to book a flight from Fremont to San Diego

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

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

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

Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from Fremont to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Fremont to San Diego?

Currently, August is the cheapest month in which you can book a flight from Fremont to San Diego (average of $286). Flying from Fremont 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 FR8 to SAN?

Find hourly flight availability from Fremont 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 3, 2025.

When flying from Fremont to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

Travelers seeking maximum savings on their Fremont 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 Fremont to San Diego

Explore weekly flight availability from Fremont 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 3, 2025.

The most flights from FR8 to SAN are scheduled on a Thursday (86 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (30 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 3, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Fremont to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

Find useful and relevant information for your journey from Fremont to San Diego. 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 into for flights to San Diego from Fremont?

    For a flight from Fremont to San Diego, you will be flying into 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 65 inbound flights from Fremont per day. 8 airlines have flights to San Diego from Fremont on a regular basis.

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

    Within the past month, 204 users have taken a look at flights from Fremont to San Diego.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $37. Southwest flights start at $39 while deals on Hawaiian Airlines start at $46 one-way.

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

    Before booking your flight to San Diego from Fremont, check out the most reliable airlines to get you to your destination on time: Asiana Airlines (88%), Air China (88%), United Airlines( 87%).

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

    While on average a flight from Fremont to San Diego is generally $300, our data shows the cheapest flight currently is $38. When looking at the most popular route, (San Francisco - San Diego), you can expect to pay $57 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Fremont to San Diego (average of $286). Flying from Fremont 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.

See more FAQs

Traveling to a place near Fremont?

Book flights to Fremont if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
National City
Lemon Grove
Imperial Beach
La Mesa
Poway
Alpine
Santee

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Top 8 airlines flying from Fremont to San Diego

Discover the top 8 airlines that operate flights from Fremont 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$29Average$88FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$30Average$97FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$38Average$148FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$57Average$214FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$61Average$206FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$97Average$215FlexibilityNo cancel feeOn-time63%
DeltaCheapest$98Average$196FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$133Average$318FlexibilityNo cancel feeOn-time71%

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