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$180+ Cheap flights from San Francisco (SFO) 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SJU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to San Juan are usually found in September or January, booked 76 days in advance, depart on a Tuesday or Sunday and return on a Saturday

Cheap flight deals from San Francisco to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$325
(Frontier)

One-way from

$180
(Delta)

Popular in

December

Cheapest in

September

Average price

$578
From San Francisco to San Juan
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One-way flight from San Francisco to San Juan
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Highest demand for flights based on searches. 11% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from San Francisco to San Juan

Cheapest flights from San Francisco to San Juan
Explore the most affordable flight options available from San Francisco to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Frontier deal was found by Cheapflights users on 6/10. 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 8/3010:29 pmSFO - SJU
1 stop12h 57mFrontier
Thu 9/113:40 amSJU - SFO
2 stops20h 42mFrontier
Deal found 6/10$325
This JetBlue deal was found by Cheapflights users on 6/10. 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.
Tue 10/2110:30 pmSFO - SJU
1 stop13h 24mJetBlue
Wed 11/52:30 pmSJU - SFO
1 stop12h 18mJetBlue
Deal found 6/10$337
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:30 amSFO - SJU
1 stop11h 38mDelta
Fri 9/2612:55 pmSJU - SFO
1 stop9h 41mDelta
Deal found 6/11$349
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2812:47 amSFO - SJU
1 stop10h 20mAmerican Airlines
Sat 11/82:55 pmSJU - SFO
2 stops12h 07mAmerican Airlines
Deal found 6/12$369
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Mon 9/2211:10 pmSFO - SJU
1 stop12h 34mUnited Airlines
Sun 9/284:55 pmSJU - SFO
1 stop11h 00mUnited Airlines
Deal found 6/10$416
This Southwest deal was found by Cheapflights users on 6/10. 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.
Wed 10/85:30 amSFO - SJU
2 stops12h 15mSouthwest
Mon 10/205:50 amSJU - SFO
2 stops14h 45mSouthwest
Deal found 6/10$488

Cheapflights Fare Finder

Customize your flight search to find flights from San Francisco 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 June 12, 2025.
Use the filters below to find and compare flights from San Francisco to San Juan that are best for you.

Fly from

San Francisco

Fly to

San Juan

Route

Depart

Return

Price

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 8/30

10:29 pm-2:26 pm

1 stop12h 57m

San Juan Luis Munoz Marin Intl

Thu 9/11

3:40 am-9:22 pm

2 stops20h 42m

$325

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 10/21

10:30 pm-2:54 pm

1 stop13h 24m

San Juan Luis Munoz Marin Intl

Wed 11/5

2:30 pm-10:48 pm

1 stop12h 18m

$337

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 9/16

7:30 am-10:08 pm

1 stop11h 38m

San Juan Luis Munoz Marin Intl

Fri 9/26

12:55 pm-7:36 pm

1 stop9h 41m

$349

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 10/28

12:47 am-2:07 pm

1 stop10h 20m

San Juan Luis Munoz Marin Intl

Sat 11/8

2:55 pm-11:02 pm

2 stops12h 07m

$369

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 9/22

11:10 pm-2:44 pm

1 stop12h 34m

San Juan Luis Munoz Marin Intl

Sun 9/28

4:55 pm-12:55 am

1 stop11h 00m

$416

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 10/8

5:30 am-8:45 pm

2 stops12h 15m

San Juan Luis Munoz Marin Intl

Mon 10/20

5:50 am-5:35 pm

2 stops14h 45m

$488

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 9/9

6:00 am-10:07 pm

2 stops13h 07m

$180

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Thu 7/10

8:53 pm-2:39 am

1 stop26h 46m

$182

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 9/22

8:40 pm-12:40 pm

1 stop13h 00m

$185

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 8/30

6:30 am-11:59 pm

2 stops14h 29m

$191

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 15 results
1
2

Best time to book a flight from San Francisco to San Juan

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to San Juan. Price data was last updated on June 9, 2025.

The best time to book flights from San Francisco to San Juan is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco to San Juan?

Currently, September is the cheapest month in which you can book a flight from San Francisco to San Juan (average of $254). Flying from San Francisco to San Juan in June is currently the most expensive (average of $339). 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 SFO to SJU?

Find hourly flight availability from San Francisco to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 32% on flights from San Francisco to San Juan by exploring options for tickets at noon.

What is the cheapest day to fly from San Francisco to San Juan?

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

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

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 June 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from San Francisco to San Juan have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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 Francisco to San Juan. 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 Francisco to San Juan?

    If you book a flight to San Juan from San Francisco, you will be flying from San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco. There are 0 flights from San Francisco to San Juan per day from 7 different airlines.

  • What are the cheapest airlines flying from San Francisco to San Juan round-trip?

    Cheapflights users have booked flights from San Francisco to San Juan round-trip from $325. Other airlines that can offer you cheap pricing are JetBlue, from $337, and Delta, from $349. These flights start at 35% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $180. Frontier flights start at $182 while deals on JetBlue start at $185 one-way.

  • Where are the most common layover locations when flying from San Francisco to San Juan?

    San Francisco to San Juan flights have a layover in Charlotte most of the time. Fort Lauderdale follows Charlotte in terms of the most common layover location on San Francisco to San Juan flights. Miami follows Fort Lauderdale in terms of the most frequent layover location on San Francisco to San Juan flights.

  • What are some popular things to do or see while on a layover in Charlotte?

    Carowind, Mint Museum Uptown, and NASCAR Hall of Fame are the most popular attractions in Charlotte if you're in need of something to do during your layover. Carowind, Mint Museum Uptown, and NASCAR Hall of Fame can be accessed by traveling approximately 8.2 mi, 5.4 mi, and 5.7 mi, respectively from Charlotte Douglas. Travelers can book a car rental at Charlotte Douglas for about $48 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Fort Lauderdale?

    The majority of Fort Lauderdale visitors spend their time at Las Olas Beach, Port Everglades, and Fort Lauderdale Beach Park. Those on a layover in Fort Lauderdale interested in visiting Las Olas Beach, Port Everglades, or Fort Lauderdale Beach Park can do so by traveling 4.1 mi, 2.1 mi, and 4.2 mi, respectively from Fort Lauderdale. Those looking to explore during their layover in Fort Lauderdale can rent a car from Fort Lauderdale for about $24 per day.

  • What are points of interest worth seeing during a layover in Miami?

    If you're on a layover in Miami and looking for things to do, consider visiting Wynwood Art District, Bayfront Park, or Bayside Marketplace. Wynwood Art District, Bayfront Park, and Bayside Marketplace are located about 5.5 mi, 6.4 mi, and 6.4 mi, respectively from Miami. Those landing in Miami looking to spend some time exploring during their layover can rent a car for about $21 per day.

  • Where are the least popular layover locations for San Francisco to San Juan flights?

    The least popular layover on flights from San Francisco to San Juan is Denver. New York is the second least popular location for layovers on flights from San Francisco to San Juan. Atlanta follows New York in terms of the least frequent layover locations on San Francisco to San Juan flights.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from San Francisco to San Juan (average of $254). Flying from San Francisco to San Juan in June is currently the most expensive (average of $339). 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 7 airlines flying from San Francisco to San Juan

Discover the top 7 airlines that operate flights from San Francisco 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$160Average$310FlexibilityNo cancel feeOn-time62%
DeltaCheapest$242Average$643FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$277Average$458FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$325Average$534FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$326Average$521FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$334Average$904FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$486Average$692FlexibilityNo cancel feeOn-time63%

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