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Luis Munoz Marin Intl

$133+ Cheap flights from San Francisco (SFO) to Luis Munoz Marin Intl (SJU)

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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SJU
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to San Juan Luis Munoz Marin Intl are usually found in January or May, booked 66 days in advance, depart on a Tuesday or Sunday and return on a Saturday

Cheap flight deals from San Francisco to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Luis Munoz Marin Intl (SJU). 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 September 17, 2025.

Round-trip from

$319
(Frontier)

One-way from

$133
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$468
From San Francisco to San Juan Luis Munoz Marin Intl
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One-way flight from San Francisco to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 6% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Francisco to Luis Munoz Marin Intl

Cheapest flights from San Francisco to Luis Munoz Marin Intl
Explore the most affordable flight options available from San Francisco to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Frontier deal was found by Cheapflights users on 9/15. 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 9/2711:00 pmSFO - SJU
1 stop12h 11mFrontier
Fri 10/39:26 pmSJU - SFO
2 stops18h 49mFrontier
Deal found 9/15$319
This Frontier deal was found by Cheapflights users on 9/14. 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.
Fri 9/2611:00 pmSFO - SJU
1 stop12h 11mFrontier
Fri 10/39:26 pmSJU - SFO
2 stops18h 49mFrontier
Deal found 9/14$320
This Frontier deal was found by Cheapflights users on 9/16. 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 10/2510:23 pmSFO - SJU
1 stop12h 46mFrontier
Wed 10/299:00 amSJU - SFO
2 stops16h 27mFrontier
Deal found 9/16$321
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 11/110:23 pmSFO - SJU
1 stop13h 56mMultiple Airlines
Thu 11/69:49 pmSJU - SFO
2 stops30h 20mMultiple Airlines
Deal found 9/15$325
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/2510:23 pmSFO - SJU
1 stop12h 46mFrontier
Tue 10/289:00 amSJU - SFO
2 stops39h 22mFrontier
Deal found 9/15$330
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 12/611:17 pmSFO - SJU
1 stop11h 37mFrontier
Tue 12/99:30 pmSJU - SFO
2 stops27h 38mFrontier
Deal found 9/14$332
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 9/2811:00 pmSFO - SJU
1 stop12h 11mMultiple Airlines
Thu 10/22:38 pmSJU - SFO
2 stops33h 43mMultiple Airlines
Deal found 9/15$338
This Frontier deal was found by Cheapflights users on 9/15. 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 9/2711:00 pmSFO - SJU
1 stop12h 11mFrontier
Thu 10/210:57 amSJU - SFO
2 stops15h 05mFrontier
Deal found 9/15$342

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Luis Munoz Marin Intl 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 September 17, 2025.
Use the filters below to find and compare flights from San Francisco to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

San Francisco

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 10/21

10:00 pm-12:27 pm

1 stop11h 27m

San Juan Luis Munoz Marin Intl

Wed 11/5

12:30 pm-11:59 pm

1 stop15h 29m

$356

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 12/10

7:45 am-10:23 pm

1 stop10h 38m

San Juan Luis Munoz Marin Intl

Tue 1/13

1:10 pm-11:33 pm

1 stop14h 23m

$356

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 10/31

5:00 am-5:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Mon 11/3

5:50 pm-1:15 am

1 stop11h 25m

$389

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 12/13

11:20 pm-1:17 pm

1 stop9h 57m

San Juan Luis Munoz Marin Intl

Wed 12/24

4:52 pm-12:03 am

1 stop11h 11m

$426

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Sat 11/1

7:00 am-8:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Wed 11/5

2:05 am-10:22 am

1 stop12h 17m

$426

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Thu 9/25

6:15 am-10:00 pm

1 stop12h 45m

San Juan Luis Munoz Marin Intl

Fri 10/3

7:30 am-5:32 pm

1 stop13h 02m

$435

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Wed 9/24

7:25 am-10:00 pm

1 stop11h 35m

San Juan Luis Munoz Marin Intl

Thu 10/2

12:58 pm-11:57 pm

1 stop13h 59m

$435

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Mon 10/6

9:20 pm-12:34 pm

1 stop12h 14m

San Juan Luis Munoz Marin Intl

Fri 10/10

1:05 am-9:14 am

1 stop11h 09m

$462

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Fri 10/10

11:20 pm-1:52 pm

1 stop11h 32m

San Juan Luis Munoz Marin Intl

Thu 10/23

2:25 pm-12:59 am

1 stop13h 34m

$478

San FranciscoSan Juan

SFO - SJU

SFOSJU

San Francisco

Tue 12/9

12:43 am-4:36 pm

1 stop11h 53m

San Juan Luis Munoz Marin Intl

Sat 1/17

7:45 am-2:56 pm

1 stop11h 11m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 23 results
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2
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Best time to book a flight from San Francisco to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport

How far ahead should I book a flight from San Francisco to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Luis Munoz Marin Intl. Price data was last updated on September 12, 2025.

The best time to book flights from San Francisco to San Juan Luis Munoz Marin Intl Airport is 66 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 Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from San Francisco to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from San Francisco to San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 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 Luis Munoz Marin Intl Airport by exploring options for tickets at noon.

What is the cheapest day to fly from San Francisco to San Juan Luis Munoz Marin Intl Airport?

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

Travelers seeking maximum savings on their San Francisco to San Juan Luis Munoz Marin Intl Airport 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.

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated September 17, 2025.
Read through reviews of airlines operating flights from San Francisco to San Juan Luis Munoz Marin Intl Airport, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
2,914 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
5.8
Fair
3,173 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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 Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to San Juan Luis Munoz Marin Intl. On average, San Francisco has 0 outbound flights to San Juan Luis Munoz Marin Intl per day from 7 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How long is the flight from San Francisco to San Juan Luis Munoz Marin Intl Airport?

    Departing from San Francisco to San Juan Luis Munoz Marin Intl Airport will take you 9h 25m. The distance between San Francisco and San Juan Luis Munoz Marin Intl Airport is about 3623 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from San Francisco to San Juan Luis Munoz Marin Intl Airport round-trip?

    Cheapflights users have booked flights from San Francisco to San Juan Luis Munoz Marin Intl Airport round-trip from $160. Other airlines that can offer you cheap pricing are Delta, from $240, and JetBlue, from $298. Frontier is 67% cheaper than the average price of flights available within the next 90 days to this destination.

  • Where are the most common layover locations when flying from San Francisco to San Juan Luis Munoz Marin Intl Airport?

    The most popular layover on flights from San Francisco to San Juan Luis Munoz Marin Intl Airport is Fort Lauderdale. Charlotte sees the second most layovers for non-direct flights flying from San Francisco to San Juan Luis Munoz Marin Intl Airport. Atlanta comes next as the third most popular layover location for San Francisco to San Juan Luis Munoz Marin Intl Airport flights.

  • What are some popular things to do or see while on 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. 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. Those on a layover in Fort Lauderdale in need of a rental car can book one at Fort Lauderdale for about $22.

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

    Most Charlotte visitors opt to spend their time at Carowind, Mint Museum Uptown, and NASCAR Hall of Fame. Carowind, Mint Museum Uptown, and NASCAR Hall of Fame are located about 8.2 mi, 5.4 mi, and 5.7 mi, respectively from Charlotte Douglas. Travelers in need of a car in Charlotte can rent one for about $43 per day.

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

    Atlanta travelers tend to visit Georgia Aquarium, Tabernacle, and Fox Theatre more than any other attractions. Georgia Aquarium, Tabernacle and Fox Theatre are located about 8.6 mi, 8.3 mi, and 9.3 mi, respectively from Atlanta Hartsfield-Jackson if you are interested in checking them out. Those on a layover in Atlanta in need of a rental car can book one at Atlanta Hartsfield-Jackson for about $52.

  • Where are the least popular layover locations for San Francisco to San Juan Luis Munoz Marin Intl Airport flights?

    The least popular layover on flights from San Francisco to San Juan Luis Munoz Marin Intl Airport is Denver. Denver is followed by New York in terms of the least popular layover location on flights from San Francisco to San Juan Luis Munoz Marin Intl Airport. Miami ranks third to last in terms of the least popular layover locations on San Francisco to San Juan Luis Munoz Marin Intl Airport flights.

  • Can I find deals for flights from San Francisco to Luis Munoz Marin Intl that include hotel bookings?

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

  • How can I find direct flights from San Francisco to Luis Munoz Marin Intl?

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

  • Can I find deals for business class flights from San Francisco to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from San Francisco to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from San Francisco to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from San Francisco to San Juan Luis Munoz Marin Intl Airport 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.

See more FAQs

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Luquillo
Humacao

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Alternative routes for San Francisco to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from San Francisco to Luis Munoz Marin Intl

Discover the top 7 airlines that operate flights from San Francisco to Luis Munoz Marin Intl. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$160Average$330FlexibilityNo cancel feeOn-time62%
DeltaCheapest$240Average$595FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$298Average$474FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$310Average$974FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$346Average$532FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$357Average$550FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$486Average$652FlexibilityNo cancel feeOn-time63%

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