San Juan

$179+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SJU
Jan 27 — Feb 31
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to San Juan 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 Francisco to San Juan are usually found in May or October, booked 22 days in advance, depart on a Tuesday or Sunday and return on a Saturday

Cheap 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 December 28, 2025.

This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:31 pmSFO - SJU
1 stop18h 08mAmerican Airlines
Wed 12/318:35 pmSJU - SFO
1 stop18h 49mAmerican Airlines
Deal found 12/26$489
This American Airlines deal was found by Cheapflights users on 12/25. 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.
Wed 12/316:10 amSFO - SJU
1 stop13h 49mAmerican Airlines
Sat 1/108:20 amSJU - SFO
1 stop18h 05mAmerican Airlines
Deal found 12/25$520
This Delta deal was found by Cheapflights users on 12/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:10 amSFO - SJU
1 stop11h 19mDelta
Tue 12/303:44 pmSJU - SFO
1 stop10h 59mDelta
Deal found 12/26$536
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/284:55 pmSFO - SJU
2 stops15h 01mDelta
Wed 12/316:30 amSJU - SFO
1 stop10h 21mDelta
Deal found 12/27$573
This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:22 amSFO - SJU
1 stop17h 43mAmerican Airlines
Wed 12/318:35 pmSJU - SFO
1 stop18h 49mAmerican Airlines
Deal found 12/26$576
This United Airlines deal was found by Cheapflights users on 12/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:02 amSFO - SJU
1 stop10h 24mUnited Airlines
Wed 12/312:05 amSJU - SFO
1 stop12h 15mUnited Airlines
Deal found 12/26$626
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Thu 12/255:00 amSFO - SJU
1 stop12h 00mUnited Airlines
Fri 12/268:30 amSJU - SFO
1 stop14h 00mUnited Airlines
Deal found 12/24$642
This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:50 pmSFO - SJU
2 stops10h 45mAmerican Airlines
Wed 12/318:35 pmSJU - SFO
1 stop18h 49mAmerican Airlines
Deal found 12/26$650
This American Airlines deal was found by Cheapflights users on 12/25. 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.
Fri 12/266:10 amSFO - SJU
1 stop13h 49mAmerican Airlines
Sat 1/106:00 amSJU - SFO
2 stops13h 05mAmerican Airlines
Deal found 12/25$654

Find 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 December 28, 2025.

Round-trip from

$295
(Expedia)

One-way from

$179
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$602
From San Francisco to San Juan
One-way flight from San Francisco to San Juan
Highest demand for flights based on searches. 5% potential increase in price ($25 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Average for round-trip flights in December 2025

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 December 28, 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 4/18

7:00 am-12:07 am

1 stop14h 07m

San Juan Luis Munoz Marin Intl

Tue 4/21

11:59 pm-11:34 am

1 stop14h 35m

$318

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 3/24

10:40 am-11:56 pm

1 stop10h 16m

San Juan Luis Munoz Marin Intl

Tue 3/31

7:00 am-7:27 pm

1 stop15h 27m

$318

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 2/2

9:30 pm-1:45 pm

1 stop12h 15m

San Juan Luis Munoz Marin Intl

Wed 2/4

5:40 am-2:55 pm

2 stops13h 15m

$338

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 3/16

11:47 pm-1:49 pm

1 stop11h 02m

San Juan Luis Munoz Marin Intl

Tue 3/24

9:20 am-10:50 pm

1 stop16h 30m

$349

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Thu 3/19

10:40 pm-12:54 pm

1 stop11h 14m

San Juan Luis Munoz Marin Intl

Tue 3/24

7:00 am-6:19 pm

2 stops14h 19m

$359

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 1/21

6:10 am-11:45 pm

2 stops13h 35m

San Juan Luis Munoz Marin Intl

Fri 1/23

6:09 am-6:19 pm

2 stops16h 10m

$359

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 1/18

5:05 pm-1:05 pm

2 stops16h 00m

San Juan Luis Munoz Marin Intl

Wed 1/21

3:20 pm-11:25 pm

1 stop12h 05m

$359

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 4/21

8:00 am-8:06 pm

1 stop9h 06m

San Juan Luis Munoz Marin Intl

Thu 4/30

6:15 am-7:01 pm

2 stops15h 46m

$359

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sun 1/18

5:05 pm-1:05 pm

2 stops16h 00m

San Juan Luis Munoz Marin Intl

Fri 1/23

6:09 am-6:19 pm

2 stops16h 10m

$359

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 1/24

6:00 am-11:57 pm

2 stops13h 57m

San Juan Luis Munoz Marin Intl

Thu 1/29

3:20 pm-11:56 pm

2 stops12h 36m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 21 results
1
2
3

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 December 26, 2025.

The best time to book flights from San Francisco to San Juan is 22 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, December is the cheapest month in which you can book a flight from San Francisco to San Juan (average of $169). Flying from San Francisco to San Juan in October is currently the most expensive (average of $315). 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 December 28, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from San Francisco to San Juan 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.

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

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.

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

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.

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

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.

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

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.

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

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.

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

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 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.

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

    A quick flight from San Francisco to San Juan can take about 11h 02m. JetBlue provides one of the quickest options available for as low as $349. San Francisco and San Juan are separated by a distance of 3623 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $149. Other airlines that can offer you cheap pricing are Delta, from $172, and Sun Country Air, from $286. These flights start at 69% 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 Frontier, which is currently one of the cheapest options available, starting at $85. American Airlines flights start at $164 while deals on United Airlines start at $174 one-way.

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

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

    Las Olas Beach, Port Everglades, and Fort Lauderdale Beach Park are the most popular attractions in Fort Lauderdale if you're in need of something to do during your layover. Las Olas Beach, Port Everglades, and Fort Lauderdale Beach Park can be accessed by traveling approximately 4.1 mi, 2.1 mi, and 4.2 mi, respectively from Fort Lauderdale. Travelers can book a car rental at Fort Lauderdale for about $27 per day to make their sightseeing more efficient.

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

    The majority of Charlotte visitors spend their time at Carowind, NASCAR Hall of Fame, and Mint Museum Uptown. Those on a layover in Charlotte interested in visiting Carowind, NASCAR Hall of Fame, or Mint Museum Uptown can do so by traveling 8.2 mi, 5.7 mi, and 5.4 mi, respectively from Charlotte Douglas. Those looking to explore during their layover in Charlotte can rent a car from Charlotte Douglas for about $48 per day.

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

    If you're on a layover in Dallas and looking for things to do, consider visiting American Airlines Center, Dallas World Aquarium, or Dos Equis Pavilion. American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion are located about 15.0 mi, 15.5 mi, and 18.3 mi, respectively from Dallas/Fort Worth. Those landing in Dallas looking to spend some time exploring during their layover can rent a car for about $50 per day.

  • Where are the least popular layover locations for 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, December is the cheapest month in which you can book a flight from San Francisco to San Juan (average of $169). Flying from San Francisco to San Juan in October is currently the most expensive (average of $315). 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 Francisco to San Juan

See prices for flight routes from nearby airports that may be better suited for you.

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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$160Average$341FlexibilityNo cancel feeOn-time62%
DeltaCheapest$240Average$479FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$286Average$914FlexibilityNo cancel feeOn-time83%
JetBlueCheapest$289Average$414FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$349Average$526FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$367Average$529FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$412Average$628FlexibilityNo cancel feeOn-time63%

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.