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San Juan

$173+ Cheap flights from Fremont, CA to San Juan

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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SJU
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Fremont to San Juan

Cheapest flights from Fremont to San Juan
Explore the most affordable flight options available from Fremont to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This JetBlue deal was found by Cheapflights users on 1/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/210:39 am
SFO
-
SJU
1 stop10h 20m
JetBlue
Wed 3/45:01 am
SJU
-
SFO
1 stop11h 56m
JetBlue
Deal found 1/26$343
This CheapOair deal was found by Cheapflights users on 1/27. 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.
Wed 2/2512:45 pm
SFO
-
SJU
1 stop11h 06m
JetBlue
Wed 3/48:00 am
SJU
-
SFO
1 stop19h 59m
JetBlue
Deal found 1/27$344
This Orbitz deal was found by Cheapflights users on 1/26. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:03 pm
SFO
-
SJU
1 stop10h 17m
Multiple Airlines
Mon 4/1311:59 pm
SJU
-
SFO
1 stop15h 38m
Multiple Airlines
Deal found 1/26$346
This Trip.com deal was found by Cheapflights users on 1/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2310:58 pm
SFO
-
SJU
1 stop12h 08m
Frontier
Sat 2/287:05 am
SJU
-
SFO
1 stop19h 16m
Frontier
Deal found 1/27$347
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/1710:55 pm
SFO
-
SJU
2 stops21h 48m
Multiple Airlines
Thu 2/197:44 pm
SJU
-
SFO
1 stop17h 49m
Multiple Airlines
Deal found 1/28$348
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/2010:28 am
SFO
-
SJU
1 stop21h 09m
Multiple Airlines
Sat 2/288:53 pm
SJU
-
SFO
2 stops28h 46m
Multiple Airlines
Deal found 1/27$349
This Trip.com deal was found by Cheapflights users on 1/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2010:34 pm
SFO
-
SJU
2 stops23h 51m
Frontier
Tue 2/242:59 am
SJU
-
SFO
2 stops22h 40m
Frontier
Deal found 1/28$350
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Sun 2/2210:46 pm
SFO
-
SJU
1 stop11h 36m
Multiple Airlines
Fri 2/276:00 am
SJU
-
SFO
2 stops30h 03m
Multiple Airlines
Deal found 1/27$351
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/2010:28 am
SFO
-
SJU
1 stop21h 09m
Multiple Airlines
Tue 2/243:18 pm
SJU
-
SFO
1 stop10h 21m
Multiple Airlines
Deal found 1/28$352
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Sat 2/216:15 am
SFO
-
SJU
2 stops14h 50m
Frontier
Sat 2/287:05 am
SJU
-
SFO
1 stop19h 16m
Frontier
Deal found 1/28$354

Find flight deals from Fremont to San Juan

Keep the following information in mind while searching for Fremont to San Juan flight deals. Data was last updated January 29, 2026.

Round-trip from

$343
(JetBlue)

One-way from

$173
(Priceline)

Popular in

December

Cheapest in

May

Average price

$459
From Fremont to San Juan
Search Deals
One-way flight from Fremont to San Juan
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Fremont to San Juan 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 January 29, 2026.
Use the filters below to find and compare flights from Fremont to San Juan that are best for you.

Fly from

Fremont

Fly to

San Juan

Route

Depart

Return

Price

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 3/2

10:39 am-12:59 am

1 stop10h 20m

San Juan Luis Munoz Marin Intl

Wed 3/4

5:01 am-12:57 pm

1 stop11h 56m

$343

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 3/4

12:45 pm-3:51 am

1 stop11h 06m

San Juan Luis Munoz Marin Intl

Mon 5/4

11:25 pm-10:29 am

1 stop14h 04m

$365

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 4/7

9:15 pm-1:10 pm

1 stop12h 55m

San Juan Luis Munoz Marin Intl

Tue 4/14

11:25 am-10:10 pm

2 stops13h 45m

$383

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 2/10

7:15 pm-2:53 am

2 stops27h 38m

San Juan Luis Munoz Marin Intl

Thu 2/19

7:44 pm-9:33 am

1 stop17h 49m

$393

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 2/16

10:58 pm-2:22 pm

1 stop11h 24m

San Juan Luis Munoz Marin Intl

Sat 2/28

7:05 am-10:21 pm

1 stop19h 16m

$395

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 2/6

11:05 pm-11:56 am

1 stop8h 51m

San Juan Luis Munoz Marin Intl

Wed 2/11

7:30 am-8:59 pm

2 stops17h 29m

$406

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 2/22

9:30 pm-1:01 pm

1 stop11h 31m

San Juan Luis Munoz Marin Intl

Thu 2/26

2:12 pm-11:49 pm

1 stop13h 37m

$406

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 3/17

8:20 am-1:42 am

1 stop14h 22m

San Juan Luis Munoz Marin Intl

Thu 3/26

5:01 am-1:56 pm

1 stop11h 55m

$418

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 2/18

6:05 am-9:12 pm

1 stop11h 07m

San Juan Luis Munoz Marin Intl

Thu 2/26

2:12 pm-11:49 pm

1 stop13h 37m

$430

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 2/25

6:05 am-11:58 pm

2 stops13h 53m

San Juan Luis Munoz Marin Intl

Wed 3/4

3:10 pm-11:47 pm

2 stops12h 37m

$430

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 20 results
1
2

Best time to book a flight from Fremont to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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 Juan

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

Use this chart to determine the optimal time to book a round-trip flight from Fremont to San Juan. Price data was last updated on January 23, 2026.

Booking 23 days in advance of your planned departure date is, on average, the best time to get cheap flights from Fremont to San Juan. 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 Juan?

Currently, January is the cheapest month in which you can book a flight from Fremont to San Juan (average of $169). Flying from Fremont to San Juan in February is currently the most expensive (average of $321). 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.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 Juan. Reviews last updated January 29, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Fremont to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
7.9
Good
8,127 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
9,215 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
11,206 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
JetBlue
7.2
Good
2,891 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Frontier
5.7
Fair
3,056 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

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

    A quick flight from Fremont to San Juan can take about 10h 20m. JetBlue provides one of the quickest options available for as low as $343. The distance between Fremont and San Juan is about 3623 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $85 on Frontier. Other airlines that offer cheap prices include American Airlines from $174 and United Airlines from $174 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Fremont to San Juan (average of $169). Flying from Fremont to San Juan in February is currently the most expensive (average of $321). 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

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Top 8 airlines flying from Fremont to San Juan

Discover the top 8 airlines that operate flights from Fremont to San Juan. 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$150Average$337FlexibilityNo cancel feeOn-time62%
DeltaCheapest$172Average$457FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$222Average$748FlexibilityNo cancel feeOn-time83%
Spirit AirlinesCheapest$232Average$361FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$278Average$414FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$298Average$537FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$354Average$603FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$383Average$580FlexibilityNo cancel feeOn-time63%

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